TW211542B - Flexible multiply towpreg, products therefrom and methods of production therefor - Google Patents

Abstract

This invention relates to an improved flexible multiply towpreg, products therefrom, and methods of production therefor. The improved flexible towpreg comprises a plurality of towpreg plies which comprise reinforcing filaments and matrix forming material; the reinforcing filaments being substantially wetout by the matrix forming material such that the towpreg plies are substantially void-free composite articles, and the towpreg plies having an average thickness less than about 100 microns. The method of production for the improved flexible towpreg comprises the steps of spreading the reinforcing filaments to expose individually substantially all of the reinforcing filaments; coating the reinforcing filaments with the matrix forming material in a manner causing interfacial adhesion of the matrix forming material to the reinforcing filaments; forming the towpreg plies by heating the matrix forming material contacting the reinforcing filaments until the matrix forming material liquefies and coats the reinforcing filaments; and cooling the towpreg plies in a manner such that substantial cohesion between neighboring towpreg plies is prevented until the matrix forming material solidifies. Products include an improved flexible towpreg tape of a known geometry formed from the towpreg by forming the towpreg tape under pressure and elevated temperature in a means for creating a known tape geometry; a non-woven towpreg fabric fabricated from a plurality of the flexible, multiply towpregs by overlapping a plurality of the towpreg plies, and joining the towpreg plies together to form the fabric and, additionally, multidimensional fabrics, preforms and composite articles; and an improved flexible towpreg article in which the matrix forming material is recycled plastics.

Description

211542 Λ 6 Β 6 Standard issued by the Ministry of Economic Affairs, printed by the Λν Staff Consumer # Cooperative V. Description of the invention (i) 1. Field and scope of the invention The scope of the invention includes flexible multi-strand prepreg yarns made with Products, and preparation methods. More specifically, the present invention relates to a very flexible multi-strand prepreg yarn that is suitable for weaving, weaving and similar production processes. Products produced from such yarns and methods of making such yarns are within the scope of the present invention. This flexible multi-strand prepreg yarn can be processed into a flexible multi-strand prepreg tape with accurate and uniform shape and size for filament winding, pultrusion and similar production processes. This multi-strand prepreg yarn can also be processed into a non-woven prepreg fabric, which is further processed into multi-dimensional fabrics, pre-formed products and laminated material structures. This prepreg can also be composed of entangled fibers and a matrix resin containing partially recycled plastic. 2. Invented production process The prepreg yarn made by combining fiber and matrix resin is little known in the process, and is usually called prepreg. Prepreg yarn is one of prepregs. The usual prepreg is made of hundreds or thousands of fibers sandwiched in a tangled resin matrix. The commonly used reinforcing fibers are all commercially available, and are generally made up of long-term continuous strands and are called strands and yarns. The number of monofilaments in each yarn varies. There are many types of matrix resins, but currently there are two main types of resins, thermoplastic polymers and partially cured thermosetting polymers. Thermoplastic polymers have been widely used in prepregs and other laminate materials, and will also be used in the independent aerospace field and other advanced laminate materials. Compared with thermosetting polymer materials, thermoplastic polymers are in the fracture toughness (please read the notes on the back before filling this page)

The size of this paper is printed in Chinese National Standard (CNS) Grade A (210X297mm) -4-V. 211542 Λ 6 Β 6 Employee's Consumer Cooperative of the Central Standards Bureau of the Ministry of Economy V. Invention Instructions (2), impact strength And corrosion resistance is more advantageous. The prepregs made of thermoplastic polymers can have an infinite storage period, guarantee the quality of post-processing, and solve the problem of storage and freezing of thermosetting polymer prepregs. Thermoplastic polymer prepregs are tougher than most thermoset polymers' rigid high-joint networks. Few thermosetting polymers can meet the damage resistance and wet heat compressive strength required by the composite materials used in the aviation field. When the thermoplastic polymer is used as the matrix resin of the covering material, it is difficult to uniformly coat the fiber surface due to its high melt viscosity. Under normal circumstances, thermoplastic high molecular prepregs are very stiff, not very suitable for weaving, weaving or paving into pre-formed products, fabrics made with it are very stiff. Similarly, it is very difficult to use such a stiff thermoplastic polymer prepreg for filament winding or to prepare a shape-dyed product. During the paving process, heat must be concentrated on the contact points to make the prepreg fit the mold. Thermosetting polymers are also used as matrix resins for prepregs. Although prepregs made of thermosetting polymer prepolymers are relatively soft, they are usually very sticky and require a layer of protective release agent. This layer of anti-sticking must be removed before the prepreg is used. Although the thermosetting polymer prepreg can be used in certain occasions, such as filament winding, but because it is sticky, it needs to use a protective anti-sticking agent, so it cannot be used for textiles, numbering, or loose or The raw material of the fiber in the center of the sheet molding compound. There are two other types of prepreg yarns. One is a metal matrix prepreg yarn, which is similar to a thermoplastic prepreg yarn; one is a partially cured ceramic prepreg yarn, which is similar to a thermosetting prepreg yarn. Due to the limited market for the use of metal and ceramic laminate materials, these two prepreg yarns are generally not available in stock, and this paper standard is easy to use (CNS) A4 specifications (210X297 public goods) (please read first (Notes on the back will be written on this page.) Binding-Order · Line · -5-Printed by Employee Consumer Cooperative of the Bureau of Standards, Ministry of Economic Affairs 2ii642 λ 6 __B_6 V. Description of invention (3) It has not been paid attention to in the research and development of production technology . Metal and ceramic prepregs can be produced in a processing method similar to thermoplastic and thermosetting prepregs. The prepregs of entangled fibers can be produced by a variety of impregnation methods, including hot melt method, solution method, emulsion method, suspension method, Surface polymerization method, fiber blending method, film interweaving method, electroplating method and solid powder method. In the hot melt process, fibers and resin are forced through a high-temperature mold at high shear rates to achieve impregnation. Due to the high temperature, the thermoplastic polymer may degrade. The other disadvantage of this method is that the fiber yarn is subjected to high stresses and it is difficult to impregnate the thermoplastic. The solution coating method is to dissolve the resin matrix material in a solvent, and then pass the fiber yarn through this solution, and then dry to remove the solvent. This technology has two drawbacks. First, the solubility of thermoplastic polymers is limited, and most engineering plastics are insoluble in low-boiling solvents at room temperature. In addition, as with the problems encountered with the hot melt method, the high solution viscosity makes impregnation difficult. Another problem with this process is that it is difficult to remove the solvent. Residual solvent in the prepreg can cause undesirable vapor bubbles in the coating material. The emulsion method uses a surfactant to prepare the resin into an aqueous emulsion, thereby coating a powdery matrix material with a very small particle size onto the fiber surface. The disadvantage of this process is that it is difficult to remove the surfactant from the final prepreg. The suspension coating method is also called wet powder method. This method does not use solvents and aims to solve the problem that most thermoplastic polymers do not dissolve at room temperature. In this method, the powdered resin suspension is in a liquid medium, usually water. Tree (please read the precautions on the back before filling in this page) Installation · Line · This paper standard uses the Chinese National Standard (CNS) A 4 specifications (210x297 Gonglu) -6 _ Ministry of Economic Affairs Standards Bureau Bei Gong Xiao # Printed by cooperatives Λ 6 益 4 ^ 以 _ «6_ V. Description of the invention (4) The fat does not dissolve in the liquid medium. The fibers pass through this suspension. The granular matrix resin suspension does not infiltrate the fiber surface, and higher pressure is required to consolidate the resin and the fiber to make a covering material. This prepreg is generally very sticky, so it is not suitable for weaving or weaving. Another disadvantage of this process is that it is necessary to remove the liquid medium, and the volatile substances, suspending agents or surfactants used in preparing the polymer / liquid colloid. In addition, if the suspension is improperly stirred, it may cause particles to coagulate, and polymer particles may appear during processing. In the emulsion or suspension coating process, the particle size of the suspension or latex body is smaller than that of the fiber to achieve intimate mixing. For many thermoplastic polymers that cannot be prepared by emulsion polymerization or suspension polymerization, it is very difficult to make such small particles. As the size of the particles increases, the quality of the mixture decreases, resulting in poor dispersion of the matrix resin in the coated material after consolidation and poor performance of the coated material. In the surface polymerization method, the polymer matrix material is polymerized on the fiber surface and coated. The disadvantage of this method is the need to remove solvents, polymerization inhibitors, or by-products of polymerization. Surface polymerization can only be achieved with some special techniques, such as electrochemical polymerization. Many polymer materials with commercial value cannot be produced by this method. In the fiber blending process, the polymer matrix material is made into a fibrous shape, and then mixed with the reinforcing fibers under dry conditions. Until the composite material is consolidated, these polymer matrix fibers are infiltrated to the surface of the reinforcing fiber by some method, such as melting. The effect of wetting depends on the degree of mixing of resin and fiber in the finished product. Because the resin matrix in this blend is not available (please read the precautions on the back before filling in this page), this paper scale uses the Chinese Najia Standard (CNS) A 4 specifications (210x297 male dragon) Λ 6 13 6 211542 V. Description of the invention (5) (Please read the precautions on the back before filling in this page) There are infiltrated reinforcing fibers. Under the same processing time and temperature, this yarn needs a higher pressure than the fully wetted prepreg yarn to be solidified. The method of forming a laminated material Ο film casting can solve some problems encountered by the thermoplastic polymer in the hot melting method. In this method, a film of a base material formed by hot melt method or solution method is laid on the fiber. The fiber is sandwiched between two layers of film, and then heated and pressed to press the resin into the strand. American Cyanamid Company (American Cyanamid) used electroplating to prepare a Roule metal matrix prepreg yarn. Each fiber in the yarn is fully infiltrated by the metal matrix and evenly coated. This prepreg yarn has all the properties required for weaving, weaving, filament winding, and making into bulk or sheet molding compounds. In addition, this prepreg yarn can be consolidated without high pressure. However, the disadvantage of the electroplating method is that the types of raw materials available for electroplating are limited. Most ceramic or polymer materials with commercial value cannot be plated on the surface of the reinforcing fiber. In addition, because the fiber lobe itself is used as one of the telegraphs in this method, it must be electrically conductive, so glass fibers or organic fibers cannot be electroplated. Printed by the Beigong Consumer Cooperative of the Bureau of Standards, Ministry of Economic Affairs. The solid powder coating method is the latest method for the production of prepregs. The main advantage of this method is that it does not use any solvents and does not introduce large stresses during processing. In most applications using this method, the ultimate goal is to effectively form a thin, uniform, high-quality coating. The powder-forming resin must be able to maintain a solid state at ambient (temperature) or higher storage temperature. When heated, it can melt into a low-viscosity fluid and penetrate into the nonwoven fabric tow. The dry powder coating method has many advantages. The size of this paper is printed in China Standards (CNS) A4 specifications (210x297 male dragon) -8-Λ 6 13 6 Printed by the A Gong Xiao Zhi Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs V. Invention Instructions (6) It does not use solvents Or water, not damp, which helps the recycling of the covering material. This is economically advantageous, making it possible for the powder to achieve a utilization rate of 10%. In addition, this method does not use expensive solvents, reducing solvent evaporation and waste. It is mainly because of these advantages that the powder coating method has been developed and further developed. Another method of coating fibers with a powdered resin matrix was invented by Atochem, which first coated the surface of the fiber with dry thermoplastic polymer powder, and then wrapped it with a thermoplastic material. However, in this process, since the resin matrix is not melted, only part of the fibers directly in contact with the foreskin are infiltrated by the resin. Compared with prepregs that are completely impregnated with resin, under the same processing conditions, such prepregs require higher pressure to be strong. In addition, similar to suspension coating, this value process requires the use of very small particles, generally less than 2◦ microns. It is costly to process thermoplastic polymers into such fine powders. The volume content of the resin matrix in the prepreg yarn generally exceeds 25% to consolidate and form a clad material structure that does not contain bubbles. If the resin content is less than 25%, additional resin will be added during the consolidation process. Pre-impregnated yarns are one-dimensional linear, but through textile, braided fiber, filament winding and other processing methods, they may become two-dimensional and three-dimensional products. In addition, the prepreg yarn can also be cut or otherwise made into a fiber-reinforced raw material for the molding process. A brief summary of the present invention The minimum bending half-length of the basic prepreg in the present invention does not exceed 15 (please read the precautions on the back before filling this page). This paper is used in the national standard (CNS) A 4 specifications (210X297 公 ®) -9-Printed by Beigongxiaot Cooperative of the Central Bureau of Economics, Ministry of Economic Affairs. Λ 6-Li 5. Description of invention (7) mm, the average thickness of the yarn per share does not exceed 10〇wm, so it is suitable It is used for weaving, weaving, filament winding, and deep processing into various useful shapes and structures. Textile and weaving processes require that the thickness of each yarn does not exceed the above limits. However, if the strands constituting the prepreg yarn are not pinned to each other, the size of the prepreg yarn need not be constrained. Each strand in the prepreg yarn is a divided unit in the overall prepreg yarn, which is much more consolidated than the prepreg yarn as a whole. The distance between strands is at least 30 times the thickness of each strand. They are neither sticky nor separate from each other, so they can be deformed independently to a large extent. The multi-strand flexible prepreg yarn in the present invention is prepared by the following three steps: (1) the reinforcing fiber yarn is dispersed to the side, all the single fibers are exposed to the surrounding environment, (2) the resin matrix is separated from The fibers are in contact with each other, causing interfacial bonding. (3) Before the resin matrix solidifies into a non-stick state; each strand of the prepreg yarn is kept separate from each other, thereby preventing significant adhesion between the strands. The basic prepreg formed in this way can be further processed into various useful products. The multi-strand flexible prepreg yarn tape of the present invention is prepared by the following three steps: (1) the reinforcing fiber yarn is dispersed to the side, all the single fibers are exposed to the surrounding environment, (2) the resin matrix and dispersion The open fibers are in contact, resulting in interfacial bonding. (3) The coated fiber yarn forms a certain shape under the action of external force, thereby making a flexible band of a certain size. The multi-ply Roule pre-impregnated yarn nonwoven fabric in the present invention is prepared by the following four steps: (1) The reinforcing fiber yarn is dispersed to the side, all the single fibers are exposed to the surrounding environment, (2 ) Resin matrix and points (please read the precautions on the back before filling in this page) The paper size is easy to use China B Jiaxiu (CNS) V4 specification (2 丨 0X297mm) -10-21 Λ 6 B 6 Ministry of Economic Affairs Printed by the Beiyang Standard Bureau Beigongxiaot Cooperative V. Description of the invention (8) The loose fibers are in contact, resulting in interfacial bonding, (3) Before the resin matrix solidifies into a non-stick state, each strand of the prepreg yarn Keep them separate from each other, thereby preventing the obvious adhesion between strands. In this way, the base fabric of the prepreg woven fabric is formed. (4) The prepreg yarn base fabric is made into a nonwoven fabric by superposition, point connection or needle punching and connection. The flexible prepreg yarn made of the resin matrix composed of recycled plastics in the present invention is prepared in the following three steps: (1) The reinforcing fibers are dispersed to the side, all the single fibers are exposed to the surrounding environment, (2) The fiber matrix composed of recycled plastic is in contact with the dispersed fibers, resulting in interfacial bonding. (3) Before the resin matrix composed of recycled plastic solidifies into a non-sticky state, the side of the adjacent dimensional dimension is kept apart, thereby Prevent obvious adhesion between each other. The basic prepreg yarn is prepared as follows. The fiber yarn as a raw material is composed of many single fibers, which are dispersed, causing the single fibers to separate from each other. The resin-based skull material is then coated on the surface of these dispersed fibers. When a sufficient coating amount is reached, the resin is liquefied, thereby forming a weft yarn that is fully wetted by the resin. As the liquefied resin matrix spreads out along the fibers, the thickness of the resin matrix becomes thinner, and finally the resin film breaks between the single fibers. If the fiber yarn is sufficiently dispersed and the dispersion state is maintained at all times, the resin liquid film will break between the single iron dimensions when it solidifies. The coated fiber, whether it is coated with a single fiber or a small bundle of fibers, is then cooled down and the resin matrix solidifies. In this process, the fiber is divided into small strands. Sometimes some single yarn dimensions will be connected between two adjacent yarns to become an inter-strand link. Each yarn strand is constantly being pulled, so that the fiber yarn is entangled (please read the precautions on the back before filling in this page). Binding-thread. The standard size of this paper is the Chinese Standard (CNS) A 4 specification ( (210X297 mm) -11-Printed by the Central Standards Bureau of the Ministry of Economic Affairs β Gongxiaot Cooperative 2U ㈤ _D6_ V. Description of the invention (9) Before the movement, it also causes the fiber to be subjected to an axial tension without slackening to me. The impregnated yarn strands can be joined together to form prepreg yarns of various thicknesses, which can then be used for winding, forming ribbons or textiles, or further processing as required. The flexible multi-strand prepreg tape of the present invention is characterized by a certain width and thickness. The flexible multi-ply prepregs usually made of fiber yarns have no definite geometric dimensions, making it difficult to process high-precision high-quality products with such prepregs. The flexible multi-strand prepreg tape of the present invention has a certain geometric size, and can be suitable for filament winding, advanced thread laying process and pultrusion. There are many types of devices that can be used to produce this flexible prepreg tape. The device most preferred to be used in the present invention is the use of two matching rollers, one with a concave surface and the other with a convex surface; or one with a groove on the surface and the other with a surface There are matching bumps. When a flexible multi-strand prepreg yarn passes through a certain geometric gap between two sticks, a prepreg yarn of this geometric size is formed. The second preferred device is the independent use of a stick with a concave surface. When the soft prepreg yarn passes a certain part of the periphery of this roller under tension, the tension and the concave shape of the stick work together to force the flexible multi-strand prepreg to gradually move to the lowest point of the concave surface of the roller, thus forming A strap with appropriate geometry. The nonwoven fabric of the multi-ply prepreg yarns in the present invention can be used to produce low-cost 2-dimensional fabrics, and it can be used as raw materials for further processing into 2-dimensional and 3-dimensional fabrics, preforms and Various laminated materials (please read the precautions on the back before writing this page). This paper uses the Chinese standard (CNS) «M specifications (210 father 297 male dragons) -12-Ministry of Economy Standards Printed by the bureau of work and the cooperative. 5. Description of invention (1C)). Therefore, the products produced using the soft nonwoven fabric of the present invention are more convenient than the woven and woven fabrics produced by using flexible multi-ply prepreg yarns. With the technique of the present invention, fabrics made with a resin matrix that is solid at room temperature can be very flexible, while fabrics produced using common sense techniques are stiff. The flexible multi-strand prepreg yarns of the present invention can be used to produce non-woven iron of flexible multi-strand prepreg yarns. This fabric uses a solid resin matrix, which is both flexible and has good fiber surface wetting. The double-fiber structure, that is, the resin matrix and the reinforcing material are both fibrous, such as mixed yarn, mixed weave, or a fabric made of a structure in which fibers and resin are alternately laid, is generally very flexible However, it does not have the infiltration of the resin fiber such as the fabric of the present invention, so in the consolidation process, this dual fiber structure requires more severe processing conditions. The fabric of the present invention is prepared by stacking and connecting the yarn strands and fibers that are connected to each other to form a flexible multi-ply prepreg yarn. The present invention tends to stack two or more prepreg yarns together to form a fabric with a weight of about 50 g / m2 to 500 g / m2, and more specifically, it tends to be about 150 g / m2 to 35◦g / m². There are many methods suitable for joining multiple strands of prepreg together, and the present invention tends to use hot-melt point connections and pin-type thread connections. The typical method is to heat and melt the multiple prepreg yarns laid together in a good choice, so that the prepreg yarns can be connected together while maintaining their original softness; Other suitable connection techniques include needle puncture, inter-fiber entanglement, and local compression. The resin matrix in the prepreg made of recycled plastic contains a large amount (please read the precautions on the back before filling in this page). This paper scale is used in accordance with the Chinese National Standard (CNS) A 4 specifications (210X297 common potion) -13 -Printed by the Employee Consumer Cooperative of the Ministry of Economic Affairs, Biyang Bureau, Λ '' 1 * Λ 6 From _ 13 6_ V. Description of the invention (Recycled plastic waste, but also contains some unused raw plastic. Although all kinds of plastic are Thermoplastics are more suitable as the matrix resin for this prepreg. The recycled plastics are first cut into short pieces and pulverized into powder. If the recycled materials are mixed with various plastics, they should be separated by density separation method. Partially purified, then coated with this powder and fused to the surface of the reinforcing fiber to make a prepreg yarn. The method of using this prepreg yarn to make a composite material structure is the same as the general prepreg yarn. The reinforcing fiber used can be in various forms , Such as grid cloth, textile or fiber yarn, reinforcing fibers can be surface coated in the form of woven fabric or dispersed fiber yarn. If fiber yarn is used, it is generally made into multiple strands of prepreg Yarns, they can be used for weaving, weaving, filament winding, tape making, non-woven fabric making, etc. The main purpose of the present invention is to produce a flexible multi-strand prepreg yarn suitable for weaving, weaving, long Wire winding, pultrusion, tape making, non-woven fabrics, and can also be processed into raw materials for bulk molding compounds. A further object of the present invention is to be able to use a variety of fibers and matrix resins to produce prepreg yarns of commercial value. Another objective is to produce a flexible prepreg yarn that contains a sufficient amount of fibers and is suitable for the economical preparation of various covering material structures. Another object of the invention is to produce a pre-impregnated fiber Impregnated yarn, therefore, during the consolidation process of the covering material, there is no need to use excessive pressure to fully infiltrate the fiber. Another object of the present invention is to produce prepreg yarn at a very high rate, which can reduce the production process The curing of the medium resin or the upgrade of the curing stage (please read the precautions on the back before writing this page) This paper standard is easy to use. The Sjia Standard (CNS) A 4 specification (210 X297 Gonglong) -14-Λ 6 Β 6 Printed by the Employee Consumer Cooperative of the Bureau of Standards, Ministry of Economic Affairs V. Description of invention (Ο Another object of the present invention is to produce prepreg yarns using a cheap, coarse-grained resin matrix *, The resin particle size can be more than two times larger than the straight warp, and the short fiber resin can also be used. A further object of the present invention is to use a variety of fibers and base resins to produce prepreg tapes of commercial value. It is a kind of flexible pre-impregnated non-woven fabric, which can be used for pultrusion, filament winding, or as a raw material for bulk molding compound, or as a variety of pre-products and laminated material structures. Production of a flexible pre-impregnated non-woven fabric, which contains sufficient fibers, suitable for the economical production of 2D and 3D preforms and laminated material structures. Another object of the present invention is to produce a nonwoven prepreg, which can be laid into a high-grade laminated material structure using a processing method similar to an adhesive thermosetting prepreg tape. A further object of the present invention is to produce a non-woven prepreg fabric that can be used to prepare preforms used in the resin transfer model process, such as tubular preforms, which can be produced using a rolling tube method. Still another object of the present invention is to produce a prepreg yarn in which the matrix resin coated on the fiber surface is mainly composed of recycled plastic. Another object of the present invention is to produce a prepreg yarn which uses inexpensive plastic waste as a base material. Still another object of the present invention is to provide a production method that can use raw materials that are less harmful to processing equipment or to the final product as a matrix resin to produce this paper-scale medium-use national standard (CNS) A 4 specification (210X297 public ) " " -15-(please read the precautions on the back before filling in this page) 2 ΙΛύ43 Λ 6 Β6 Printed by the β-Consumer Cooperative of the Bureau of Standards, Ministry of Economic Affairs V. Invention description (pre-impregnated yarn. The end of the invention One of the purpose is to use partially contaminated or contaminated resin, which is directly used to produce prepreg yarn without purification, and its final coating material performance can still meet the requirements. The following will pass the drawings and detailed The explanation further describes the above objectives and some other objectives that are not listed, but can be easily calculated by insiders. Detailed description of the drawings Figure 1 is the process flow for producing multiple strands of flexible prepreg in the present invention Diagram; Figure 2 shows the yarn strands in the basic flexible prepreg of the present invention; Figure 3 is the general prepreg (Figure 3a) and the prepreg of the present invention (Figure 3b ); Figure 4 shows the situation of each strand after the resin matrix on the surface of the reinforcing fiber is cured in the prepreg of the present invention. Figure 4a is before the plying, and Figure 4b is after the plying; 圔 五 is the resin in the present invention Description of the melting process of the matrix material on the fiber surface. Figure 5a is the situation when the fiber is constrained by the side, Figure 5b is the situation when it is not constrained by the side, and Figure 5c is the shrinkage neck formed by the resin matrix material between the single fibers Figure 6 is the thickness of the yarn strands of the present invention plotted against the elastic modulus of the yarn strands with different flexural rigidities; Figure 7 is the chief engineer of the present invention using a static fluidized bed as a coating device (please read first (Notes on the back and then fill out this page) The size of this paper is freely printed in accordance with the Chinese BS Standard (CNS) A4 specification (210x297 male dragon) -16-211 ^ 2 Λ 6 Β6 Printed by the Employee Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. 2. Description of the invention (Art flow chart; Figure 8 is a detailed illustration of the production of prepreg tape using the method of the present invention i Figure 9 is a detailed illustration of the production of prepreg tape using the furnaceless device of the present invention; Figure 10 is the preparation of prepreg Gauze The cross-sectional views of the two rollers with bumps and grooves respectively, that is, the 6-6 cross-section in Figure 8; Figures 1 1 a and 1 1 b are the other two types of rollers shown in Figure 10 Figure 12 is a schematic cross-sectional view of the preparation of a prepreg tape using a stick «f Figure 13 is a schematic side view of the preparation of a prepreg tape using a roller shown in Figure 12; Figure 14 is a unidirectional non-woven preform of the present invention A schematic diagram of the impregnated yarn fabric, where 14 a is a schematic axial cross-sectional view of the prepreg yarns laid together; 14b represents the point connection of the prepreg yarns laid together; Schematic diagram of non-woven fabric. The adjacent layers of prepreg are arranged in different directions. Where 1 5 a represents the laying of prepreg yarns; 1 5 b represents the point connection of the prepreg yarns laid together.// Figure 16 is a top view of the unidirectional nonwoven fabric shown in Figure 14b, indicating a typical point Connection form; FIG. 17 is a top view of the unidirectional nonwoven fabric shown in FIG. 14a, showing a typical stitch-type thread connection form; FIG. 18 is a microscope photo of the basic prepreg strands of the present invention. S Family Standard (CNS) Grade 4 (210X297) (please read the precautions on the back before filling in this page) -17-21i〇42 Λ 6 13 6 Printed by the Beigong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 3. Description of the invention (15 large 39.9 times); Figure 19 is a photograph of the basic pre-impregnated yarn of the present invention (magnification is 1). The resin matrix material in this yarn has been consolidated to the surface of the reinforcing fiber, but The strands are not included yet; Figure 20 is a photomicrograph of the cross section of a prepreg tape made of polypropylene impregnated glass fiber under psi pressure (magnification factor 50); Figure 21 is a polyimide tape used at 20 psi pressure Cross-section of prepreg yarn tape made of acrylic impregnated glass fiber Microscope photo Η (magnification 50); Figure 22 is a microscope photograph of a cross section of a prepreg tape made of polypropylene impregnated glass fiber at a pressure of 20 psi (magnification 200) 9 FIG. 2 3 is a polymer used in the present invention Photograph of a prepreg tape made of acrylic and glass fibers; Figure 24 is a photograph of a nonwoven prepreg fabric made by interweaving a binder fiber in the present invention. Detailed description of the invention 1. Summary of the invention An important feature is to promote the infiltration of fibers and reduce the adhesion between adjacent infiltrated fibers. In order to prevent the coated fibers from sticking together, before the resin matrix is consolidated, the fibers must be Keep apart. One way to achieve fiber separation is to maintain the axial tension on the fibers and limit them to relax laterally. Figure 5 shows the melting process of a resin matrix on two fibers. In Figure 5a, due to the fiber Subject to high axial direction (please read the precautions on the back before filling in this page) This paper uses the Chinese National Standard (CNS) A 4 specifications (210X297 g) -18-Λ 6 B 6 Ministry of Economic Affairs Standard Local shellfish consumption Printed by Zuosha. Description of the invention (id tension, thus limiting the mutual closeness of the fibers; and in Figure 5b, the axial tensile force of the fiber is very low. When the resin matrix particles are melted and infiltrated on the fiber surface, The root fibers are drawn together. In Figure 5b (c), when the fibers are fully infiltrated, the thickness of the resin melt between the two fibers is still very large, in contrast, in Figure 5a (c), because The lateral movement of the fiber is blocked, and the thickness of the melt is much less than 5b (c), so that the resin film between the two fibers is easily broken, thereby separating the two resin-coated fibers, the result is shown in Figure 5 a (b) As shown. Due to the obstruction of the fiber, the resin melt necked, resulting in a tensile stress perpendicular to the fiber axis, as shown in Figure 5c. This tensile stress is due to the fact that the resin between the fibers tends to cover the fibers and be pulled apart. If the stress exceeds the fracture stress of the melt (Ty, the neck is broken. The fracture stress of the resin matrix can be used as a criterion to determine the processing conditions of the resin. For example, the tensile fracture stress of the low molecular weight resin melt is usually Very low. The strength of high molecular weight molten polymers decreases with increasing processing temperature. In addition, the tensile strength of partially solvated or plasticized polymers is lower than the strength of their corresponding pure polymers. The thickness of the dispersed prepreg is very low, so the polymer resin can be melted in a short time, and the melting temperature can be higher than the safe use temperature of the resin. In this case, the elasticity of the resin melt The strength can become very low, which helps the prepreg yarn split into multiple strands. Generally, when the resin matrix is formed, the operating temperature should be equal to or slightly higher than the melting temperature of the resin. According to the coating process of the present invention, the operating temperature It can be much higher than the softening temperature of the resin matrix, as long as it can be retained during operation (please read the precautions on the back before writing this page). China H Family Standard (CNS) Grade A 4 (210x297 gongs) -19-Λ 6 Β6 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of invention (^ In the room, the matrix resin will not degrade or rise to the bottom Only one curing stage is required. In the present invention, the residence time can be very short, so there is no obvious degradation of the matrix material or the resin curing stage upgrade. The operating temperature of the heating furnace or heater is related to the residence time of the fiber and resin in the furnace If the residence time is very short, the temperature can be adjusted higher, and vice versa. Under this condition, the operating temperature can be higher than the temperature at which the matrix resin material starts to degrade or the curing stage begins to upgrade. As long as the residence time is kept short, the matrix resin The material will not stay at such a temperature for a long time to cause degradation or curing upgrade. In a viscoelastic liquid, the factors that cause its tensile strength to decrease will also cause its surface tension to decrease and the viscosity of the liquid to decrease. Therefore, there are The conditions conducive to fiber dispersion are also conducive to the diffusion of liquid along the fiber. In this way, the shape of the droplet shown in Figure 5a can be changed by Change the material and change the processing conditions, reduce the elasticity of the liquid to carry out the transformation. By restricting or preventing the strands from moving closer to each other, the length of the neck of the resin matrix before crushing, L · · can be greatly reduced, so that the cross-sectional area can be changed It is thin. Therefore, the force required to cause neck collapse is reduced by Fn ». Keeping the fiber dispersed during resin infiltration and consolidation will help to achieve a single coating of the fiber. Application of external force can help achieve fiber The rupture of the liquid film between them. Blowing hot air in the direction perpendicular to the plane of the yarn dimension will help to break the liquid film between the iron dimensions, so that the dispersed yarn dimension passes through a grooved stick, and the fibers are The pressure on the roller shaft will also help to split the liquid film between the fibers. Many similar mechanical devices can be used to help the dispersion of the fibers between each other. In order to produce the basic prepreg of this invention ， The resin matrix must infiltrate the fiber well. Only in this way can the additional bonding not be used (please read the precautions on the back before writing this page) 4 Cells (210 > < 297 public release) -20-9.1 1ϋ4 ^ _Β6 9.1 1ϋ4 ^ _Β6 Printed by the Employee Consumer Cooperative of the Bureau of Standards and Economy of the Ministry of Economic Affairs V. Invention description (id agent can still achieve adhesion between the resin matrix and the fiber. Resin A resin matrix liquefier, such as a melter or furnace, can be used to infiltrate the fiber. The resin is liquefied by heating. To achieve better infiltration, the matrix resin needs to be kept in the selected liquefaction equipment for a sufficient residence time, so that The resin fully wets the fiber. There are many types of liquefiers available on the market, including any radiant or conductive furnace. For drying resin powder, it is better to use a radiant furnace. In addition; the furnace can also be replaced by a heated mold Used as a liquefier. The liquefaction method of the resin matrix is a part of the present invention. Any size of base resin material can be used to coat fibers, including coarse particles and short fibers. Because in the present invention, the matrix resin liquefies and along the fiber Wetting and spreading of the surface, thereby reducing the resins normally encountered when using large-grain resins and fine-diameter reinforcing fibers The problem of mixing and dispersion between the matrix and the fiber. Therefore, in the process of the present invention, the particle size f of the matrix resin material is a very critical factor, and its range can be generally equal to or less than that of the fiber used in the coating process. The diameter or thickness is many times larger than the fiber diameter, including the use of short fibers. Prior to the present invention, no one has successfully used large diameter particles of resin as the base material. This approach can greatly save costs. 2. The choice of raw materials There are many types of fibers that can be used as fiber yarns, including: glass fibers, strontium fibers and graphite fibers; organic fibers, especially liquid crystal fibers such as aldamine and aromatic polyester; ceramic fibers, such as suohua Silicone; Mixed-copy paper scales are used in China National Standard (CNS) A4 specifications (210X297 public goods) (please read the precautions on the back and then fill out this page) Pack-* tT. -21-Ministry of Economic Affairs Bureau of Standards Printed by Beigong Consumer Cooperative Society Λ 6211 ^^-V. Description of the invention (id spun fibers, such as amide / glass, aldamine / glass, aldamine / glass / glass and glass / glass. Generally come If the diameter or thickness of the fiber exceeds 25 microns, it cannot be used. For example, it is meaningless to use boron strands with a diameter of 140 microns, because such a size of fiber cannot be made very soft. In addition, the selected The fiber fiber should be used as the reinforcing material fiber and entangled fiber. The following dimension suitable for this process should be able to maintain thermal stability at the process temperature when the resin matrix is consolidated. In addition, the glass transition of the fiber is subjected to temperature and melting The temperature is higher than room temperature, and the melting temperature is higher than the consolidation processing temperature of the covering material. Both thermoplastic and thermosetting polymers can be used as the matrix resin material. The polymer materials tending to be used in the present invention should generally not be sticky, During use after curing, the glass transition temperature or melting temperature should be higher than room temperature, especially the glass transition temperature should be higher than room temperature. Therefore, some elastic materials, rubber and leather, are very soft at room temperature and cannot be used as a matrix material. Some thermosetting polymers are sticky at normal operating temperatures. It can be operated at a low temperature to reduce tackiness and thus can be used as a resin matrix material. Some non-high molecular materials such as copper, low melting point metals, ceramic mother skulls, etc. can also be used as matrix materials. The matrix material can be any shape, such as particles, powder and short fibers. There are many types of polymer materials. Examples are as follows: ABS, acetals, acrylics, alkyd polyesters, allyls, amines, Ring gas, gas plastic, furan, melamine, nylon, phenolic, phenyl oxide and phenyl ether, polyamidoamine, polyamido-aldialdehyde, polybutene, polybasic acid Esters, polyesters, polydiether ketones, polyether ketones, polyacrylamide ethers Zhang Scale General Chinese National Standard (CNS) A 4 specifications (210x297 public goods) (please read the notes on the back before filling This page) installed.--22-_136_ Λ 6 Printed Level 5 of the Ordnance Service Cooperative of the Central Bureau of the Ministry of Economic Affairs, Fifth, Invention Instructions (20), Polyethylenes, Polyamides, Polymethylpentenes , Polysulfide benzenes, polypropylenes, polystyrenes, polyurethanes, seleniums, ureas and vinyls. Copolymers and mixtures can also be used as polymer matrix materials. Among the categories of polymers listed above, the present invention tends to use materials that, after the formation of multiple prepreg yarns, once the polymer coagulates, no longer become tacky. In addition, for thermosetting polymers, the polymer should not be completely cured immediately after the prepreg yarn starts to coagulate, so as to ensure good adhesion between the fiber and the resin when the laminated material product is finally cured. The polymer matrix materials tending to be used in the present invention include various engineering polymer materials, such as polydiether ketones, polyamides, epoxys, and polyesters. Used as a base material for the production of recycled plastic prepreg yarns, the present invention tends to use materials that contain large amounts of recycled waste plastic. Recycled mixed plastic, or a mixture of recycled plastic and fresh parent plastic can also be used. Although any plastic can be used as the resin matrix material, thermoplastics are better. The plastic selected as the base material is first shredded and then ground into a powder. If the recovered waste plastic is a mixture, or contains some fresh parent plastic, the powder can be purified by density separation. The powder of the resin matrix is coated and melt-bonded to the surface of the reinforcing fiber to make a prepreg. The method for forming the structure of the prepreg yarn and the covering material with this prepreg is the same as that of the usual prepreg. Pre-impregnated yarn made from recycled plastics is not necessarily flexible to be useful. The method of the invention can produce various prepreg yarns with different flexibility. It is possible to combine matrix materials with different amounts of recycled plastic and reinforcing fibers, regardless of their flexibility. (Please read the precautions on the back and then fill out this page) Binding-Ordering This paper size is easy to use Chinese Standards (CNS) A 4 specifications (210x297; Ϊ) -23-Λ 6 B6 Ministry of Economics Standard Printed by the Bureau of Ordnance Industry Co., Ltd. V. Description of the invention (2) j Recycled plastics are used, and the cost of the base material is always much lower than other base materials. Sometimes the recycled plastics contain some insoluble substances, they Can be entrained in prepreg yarn products without damaging processing equipment or product quality. These plastics are not melted in a precision extruder, but in a furnace without direct contact. Therefore, those non-melted materials It will not damage the processing equipment. In addition, the performance of prepreg yarns and laminate materials is mainly controlled by reinforcing fibers, so some mixed or contaminated matrix materials are allowed. With the method of the present invention, recycled plastics are not It must be highly purified to ensure that the pre-impregnated yarn and covering materials can achieve qualified performance. Generally speaking, different plastics are incompatible, so the physical properties of mixed plastics are usually Poor. The corner waste of industrial plastics is often separated by category when recycling, so it is a good recycling source. The waste plastics used by consumers are a mixture, and the degree of mixing depends on the recycling method. For example, homopolymer oblique Diethyl phthalate bottles are mixed with non-diethyl phthalate bottle caps, paper labels and other types of bottles and plastic consumer products. Therefore, in a polyethylene terephthalate In waste plastics, there may be only 80% polyethylene terephthalate. In the past, the remaining 20% was a hassle, requiring an expensive purification process. In the present invention, it is allowed A large proportion of chromaticity exists. For example, a typical prepreg yarn can be composed of 50% fiber, 40% polyethylene terephthalate resin matrix and 19% chromaticity. Since fibers dominate The performance of impregnated yarn and any covering materials made from it, a higher percentage of chromatin can be allowed to exist in the form of harmless filler in the pre-impregnated yarn (please read the precautions on the back before filling this page) . • Yes, Scale paper Xiao Yao home registration with the BH (CNS) A 4 size (210X297 mm) -24 - Λ 6 B6 2li〇4 < i V. Description of the invention (Ο Although other types of plastics can also be used, since recycled plastics are mainly focused on thermoplastics, the recycling used in the present invention tends to be thermoplastics. A mixture of several thermoplastics is also suitable for Used as a matrix material. The chemically cured thermosetting plastic is basically used as a filler. In addition, a mixture of recycled plastic and fresh parent plastic can also be used, and can be more suitable for commercial production. 3. Pre-impregnation Yarn characteristics ASTM-D 1 388 is a standard test method for determining the rigidity of textiles. This method can be used to express the rigidity of prepreg yarn. The standard test sample is generally one inch wide and less than one inch wide Samples can also be measured, and this gap can be corrected in the final result. The purpose of describing ASTM-D1388 here is for reference. Standard thermoplastic prepreg yarn, such as APC2 produced by 1C I, has a thickness of 5 mil Ears, or 127 meters, the flexural rigidity is about 216,000 milligrams per centimeter. Pre-impregnated yarns with such rigidity are difficult to use for weaving, weaving or It is made into a ribbon or flexible fabric. In these occasions, people tend to use thin prepreg yarns, that is, multi-strand prepreg yarns, with an average thickness of not more than 50 microns per share, which is the product produced by the present invention Ο For the preparation of textile, tape and nonwoven fabrics, flexibility is very important. The cantilever dyeing test method specified in ASTM-D-1388 — 64 (1975) is to measure the bending length of the prepreg yarn to calculate its paper resistance. Use the middle-B sleepy home standard (CNS) A 4 specifications (210X297 mm) (please read the precautions on the back before you go to this page) to install the line.

Printed by the Ministry of Economic Affairs, Bureau of Standards, Employee Consumer Cooperative M-25-Printed by the Ministry of Economic Affairs, Bureau of Standards, Employee Consumer Cooperative ^ 11542_Μ V. Description of invention (Flexural stiffness. The bending length is the weight of the prepreg and its stiffness. The action is measured by the bending of the prepreg under its own weight. It represents the stiffness of the prepreg when it is bent by gravity on a plane. The external surface of the prepreg has the largest elastic strain. Generally speaking , When the reinforcing fiber is compressed and deformed by more than 3%, wrinkles will be generated. For an elastic layer, its degree of compliance has the following relationship with the thickness and minimum bending radius of the elastic layer: h = 2 R · , ♦ e Dishan where h is the thickness of the elastic layer RB is the bending radius of the elastic layer e is the maximum surface strain it can withstand. For example, when an elastic layer is subjected to a minimum bending radius of 10 mm, the maximum strain is ◦ . At 3%, the thickness cannot exceed 60 microns. The minimum bending radius depends on the geometry of the product, and the maximum strain depends on the reinforcing fiber, so the thickness of the elastic layer is taken The nature of the material also depends on its actual use. This concern is shown in Figure 6. 4. Production of prepreg yarns and products The method used to produce prepreg yarns has been simplified in Figure 1 The figure explains. The following describes the selected equipment. The following description should be read in conjunction with Figure 1, so as to deepen the understanding of the production method. 101 in Figure 1 is the fiber yarn feeding device, which can be a bobbin Or roll the yarn (please read the precautions on the back before filling in this page). The paper size is easy to use Chinese B family standard (CNS) A 4 specifications (210x297 mm) -26-Λ 6 13 6 V. Description of invention (disk. The fiber yarn can be directly provided by the previous production process, or it can be supplied from other sources. The fiber yarn is composed of many single fibers 104, and in the dispersion process 103, these single strands are dispersed from each other to form Single fibers 104 dispersed in the cross-sectional direction. For yarns containing 6000 single fibers, the width of the dispersion is usually 2 inches. In the coating process 105, the dispersed single fibers 104 are coated with a matrix material. The coating amount meets the requirements After that, it becomes the coated fiber 106. Then the matrix material coated on the surface of the fiber is liquefied in the wetting process 17 and finally forms a fully wetted strand yarn 108. Employee of the Central Standards Bureau of the Ministry of Economic Affairs Printed by a consumer cooperative (please read the precautions on the back before filling in this page). When the liquefied base resin spreads along the surface of the fiber 104, the thickness of the base resin gradually becomes thinner. Finally, the resin between the fibers 104 The film ruptures (see Figure 5), this phenomenon occurs during or before the splitting step 09. If the infiltrated fiber yarn 1 08 is well dispersed and maintained, the splitting step 109 can be avoided Because the resin film located between the fibers 104 will break during the consolidation process. In addition, if the fiber yarns are well dispersed, the resin film will not tie the yarn strands together, so there is no longer a process to break the resin film between the strands. The coated fibers 1 1 0 can be single or split, which is cooled by a cooling process 112, the resin matrix solidifies during this process, and the fibers 110 are also bundled into many independent yarns during this process share. Sometimes during the cooling process 112, a single fiber 110 will stick to the adjacent yarn and become the inter-strand connecting fiber 11. The yarn strands 1 1 3 are continuously pulled by a traction device 114 to maintain the continuous delivery of the fiber yarn 102 into the system, and an axial drawing of the fiber 104 is generated. ) A4 specifications (210x297 mm) -27-Λ 6 Β6 211 printed by the Employee Consumers ’Cooperative of the Ministry of Economic Affairs ’s Central Standards Bureau _ V. Description of invention (y force, so that it will not loose itself, thereby maintaining the combination of resin and fiber As a whole, the individual yarn strands are assembled in process 115 to form prepreg yarns with different thicknesses, which are then rolled up in step 116, or processed further according to different requirements. The production of prepreg yarns is carried out by coating The covered fiber yarn introduces a gap with a certain geometric shape, forcing the fiber yarn to be pressed together in this gap, thereby forming a flexible ribbon with a known geometry. It is used to produce flexible prepreg tape There are many kinds of devices, as shown in Figures 8 to 13. But the most preferred ones are the two matched rollers shown in Figure 10 and Figure 11, one concave, one convex, or one engraved Groove, another There is a bump corresponding to this groove, and the bump can fit into the groove of another stick. When the coated fiber passes through the gap of the known geometric size between the two rollers, the Geometry pre-impregnated tape. The two sticks are generally interacted under a certain pressure using common methods, such as cylinders, springs or hydraulic cylinders, which are installed on one of the sticks. The stick device is located on the coating production line Or replace the melting furnace in the coating and melting line. The second preferred device for producing flexible prepreg tape is a roller with a concave surface, as shown in Figures 12 and 13. Coated The fiber yarn is pulled by a point on the circumferential surface of the roller under traction. Under the dual influence of tension and the concave configuration of the roller, the fiber yarn gradually moves to the lowest point of the concave surface of the roller, thereby forming a belt with a certain shape. The tension on the fiber yarn can be applied by the winding device in the system. The concave roller can be installed at the product terminal of the coating line. If the roller is heated and the fiber yarn (please read first Read the precautions on the back of this page, and then on this page) Install ·-· »-line. This paper uses the Chinese National Standard (CNS) A 4 specifications (210x297 public goods) -28-Λ 6 13 6 Ministry of Economic Affairs Printed by the Employee Consumer Cooperative of the Bureau of Employee V. Description of invention (When the pressure of y is large enough, it can replace the melting furnace in the coating melting production line. Secondly, the roller with a flat surface can also be used to produce prepreg tape The method for producing nonwoven fabrics with prepreg yarns is described below, please refer to Figure 14 to Figure 17. Yarn strands 113, inter-strand connecting fibers 111 and independent single fibers 1 1 0 together constitute prepreg yarns 1 33 The prepreg yarn includes reinforcing fibers 132 and a resin matrix coated on its surface. After the prepreg yarn 133 is cooled by the cooling process 112, it is arranged according to the desired fabric configuration. Fig. 14a is arranged in a unidirectional superposition, and Fig. 15a is arranged in a multidirectional diurnal form. In order to increase the strength of the fabric 139, it is preferable to overlap the prepreg yarns 1 3 3 in the arrangement. When the prepregs are aligned, they are combined. The method shown in Fig. 14b and Fig. 15b is to bond the stacked prepreg yarns 133 at selected locations by hot fusion, thereby forming a point-bonded fabric 139. When bonding the prepreg 133, one or more point bonds 137 are used. With this point bonding method, the phases between the points are dispersed without being intertwined, and a flexible fabric 139 can be obtained. In addition to this, pre-preg yarns can also be combined using sewing, needle punching, pressure point connection or water jet hammer. Fig. 17 is an example of a sewing method. The stitching may be at an angle to the direction of advancement of the prepreg 133 to facilitate the joining process. The nonwoven fabric of the present invention is provided with reinforcing fibers intertwined with each other. However, as shown in Fig. 24, the reinforcing fibers may be interwoven with binder fibers or binder yarns. In this case, the resulting fabric is woven from different fibers, but as far as the reinforcing fibers are concerned (please read the precautions on the back side before writing this page). Η Standard (CNS) A4 specifications (210x297 gongs) -29-Printed Λ 6 Β6 by the Employee Consumers ’Cooperative of the Ministry of Economic Affairs of the Central Committee of the Ministry of Economic Affairs Λ 6 Β6 V. Description of invention (It is non-woven. The prepared fabric 139, used The winding method is wound up for further use. In addition, the prepreg yarn 133 or the fabric 139 can also be processed into a 2-dimensional or 3-dimensional nonwoven fabric, or even made into a shape-dyed preform. For example, using Various types of laying or rolling pipe cutters can be made into tubular preformed skulls, which are often used to produce other products of various structures, such as golf clubs, tennis rackets, sailing masts, etc. To achieve good resin infiltration, make sure that there are enough The residence time is such that the resin matrix liquefies and wets the fiber. In this infiltration process, the fiber cannot be allowed to loosen laterally. This is very important. This can be achieved by applying a certain tension on the fiber yarn. When the fiber is When the infiltration is relatively sufficient, the liquefied resin matrix is usually coated on the fiber strands composed of multiple strands. In order to produce the prepreg of the present invention, the strands must be separated from each other, as shown in Figure 2. Only In this way, individually coated multiple prepreg yarns can be realized. In FIG. 2, the individually coated fiber strands are represented by 134, which is composed of reinforcing fibers 132 and matrix resin material 131. If each yarn 134 can be completely Independent, as shown by 136 is ideal. However, there may be some inter-strand connections 1 3 5 between the yarns 1 34, these inter-strand connections are usually composed of single fibers 132 and resin coated on the surface It is composed of material 131. The bending stiffness of the coated strand yarn is lower than that of the fully consolidated prepreg yarn. Now please refer to Figure 3 and Figure 4. In the general production of prepreg yarn, the fiber yarn is mostly composed of 800 to 3,000 strands of single fiber 132. The diameter or thickness of each single fiber 132 is generally 4 to 5t of this paper, and the Chinese National Standard (CNS) A 4 specification (210x297 public address) is used. Please read the precautions on the back before filling in this page) _ -30 _ Λ 6 Β6 Printed by the CX Industrial and Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (16 microns, these fiber yarns are coated with a prepreg yarn base material 1 3 1 to form a prepreg yarn 1 30. The strands of prepreg yarns prepared by the usual production process 1 34, the width is 1/8 to 1/2 inches. The yarn strands referred to in this book are independent in the usual process, generally It contains only one strand of prepreg yarns 1 to 30. They can be used independently, or they can be used together with other prepreg yarns containing only one strand of 130 to prepare a laminated material structure. The yarn strand 134 in the present invention is independent It is composed of fully infiltrated fibers 132, and the average thickness of each strand is equal to or less than 100 microns, preferably less than 50 microns. These yarn strands are assembled to form a plurality of prepreg yarns 1 3 3 of arbitrary thickness. During the entire processing, if the fibers 132 are sufficiently dispersed by the fiber disperser and a sufficient tension is maintained, the fibers 132 will not loosen in the transverse direction, so that the separation between the yarn strands can be generated or maintained. The separation between the strands can occur before or at the same time as the resin infiltration process in the furnace. Normally, this separation occurs when the liquefied resin 131 is infiltrated in the axial direction of the fiber 132. There are many methods of separation, such as mechanical separators, including grooved knives, knives, laser cutters, and convection in the direction perpendicular to the scattered fiber yarns. The single prepreg yarn 130 contains a plurality of yarn strands 134, which have different thicknesses and widths. The average thickness of the yarn strand 134 is less than 100 microns, but preferably less than 50 cm. The maximum thickness of the yarn strand 134 is 100 microns, and the minimum thickness is the single fiber diameter or thickness of the reinforcing fiber 132 used in the yarn yarn without resin impregnation. Generally speaking, (please read the precautions on the back before writing this page) Binding-The size of the paper used in the national standard B (CNS) A4 (210x297) -31-r * 66 Ministry of Economic Affairs Printed by the Employees' Cooperative of the Central Standards Bureau V. Description of invention (The length of the yarn strand 134 is greater than its width, and its length and width are both greater than its thickness. Usually the thickness of the yarn strand 134 is much smaller than its width and its width Generally less than 2, ◦00 metre. In addition, the average length of the yarn strand 134 is preferably greater than 30 times its thickness. 5. The equipment that tends to be used needs one point to explain. The steps described above are clear. Invented production methods, but they are not limited to the examples listed in this article. In order to better understand the various process steps mentioned above, an example will be listed below. This example uses the The device 8 shown is now shown in Figure 7. The ray yarn 11 is pulled, passes from the yarn feeder 10 through the device 8, and is finally collected on the winding wheel 12. The winding wheel 12 is driven at a variable speed Lower rotation, and the yarn feed wheel does not need to be used Force to drive. The linear speed is generally 3 to 30 meters per minute. Slower speeds can also be used, but they are not desirable from an economic point of view, because the production of prepreg yarn per unit time is reduced, and due to the long residence time in the furnace , The matrix resin will degrade, or the degree of curing will be upgraded, and the resin will be damaged. Higher linear speed is also feasible, as long as the following points can be guaranteed: auxiliary equipment should be equipped to reduce the vibration of the fiber yarn; the unit coated with resin material The equipment should have sufficient length to ensure a sufficient coating amount; the length and temperature of the heating furnace are sufficient to liquefy the matrix resin. In some cases, as long as the conditions are suitable, a linear speed of more than 3 ◦ meters per minute can also be used , The function of pinch roller 14 is to pull the fiber 11 coming out of the heating furnace 16. The winding roller 1 2 is in a constant (please read the precautions on the back before filling this page). (CNS) A4 specification (210X297 Gongji) -32-211042 Printed by the employee consumer cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Fifth, the invention description (3 (j winding under a certain tension, this is by using a The force controller adjusts the winder speed (not shown in the figure). The speed of the fiber yarn passing through the device 8 can be controlled by the rotation speed of the pinch wheel. In this example, the supply of fiber yarn is directly from the pre-winding It is provided on the wound fiber bobbin. The supply of fiber yarn can also come directly from the previous production process. During the yarn feeding process, the fiber 1 3 in the fiber yarn 1 1 should be avoided from twisting. It is difficult to twist the fiber after twisting Dispersion. In addition, the tension of each yarn should be controlled well, which will help maintain a constant tension throughout the impregnation process. A fiber yarn guide plate can also be provided between the yarn feeding device and the fiber yarn diffuser 18 to help The fibers are guided through the disperser 18. In this example, the fiber yarn disperser 18 uses a row of knives 17 and an air comb 19 to disperse the fiber yarn 11 into individual fibers 13. Usually two sets of rollers 17 are provided, one set before the air comb 19 and one set after it. The stick 17 mainly has two functions: (1) is to apply tension to the fiber yarn to reduce the lateral relaxation of the fiber yarn during operation; (2) is to reduce the vibration of the fiber yarn. The roller can be made of any suitable material and can have various surface characteristics. However, smooth Teflon sticks are more suitable, because this material can disperse the fibers well. Among all the rollers used, there must be at least one, preferably the one closest to the entrance of the coating device 20, and the conductor material must be used, preferably stainless copper, so that the fiber yarn enters the coating It can be grounded before covering the system. Air comb 19 is already a well-known process technology. After leaving the yarn feed wheel 10, the fiber yarn 11 enters the first set of sticks 17, and the fibers are dispersed. The arrangement of the first group of sticks can make the fiber yarn (please read the precautions on the back before filling in this page). The size of this paper uses the Chinese rental house standard (CNS) f 4 specifications (210x297 gong) -33-Λ 6 Β6 Printed by the Employee Consumer Cooperative of the Bureau of Standards and Economics of the Ministry of Economic Affairs 5. Description of invention (11. Like textile, when passing, first pass above the first stick, then immediately pass under the second roll, so that the fiber Apply a constant tension and reduce the vibration of the fiber 13. The fiber yarn 11 then enters the air flow 19, where it is further dispersed by the forced air flow. For example, a yarn containing 3, ◦0 fibers It is usually dispersed to a width of more than 1 inch to ensure the flexibility of the resulting prepreg. For the same reason, the arrangement of the second group of sticks is similar to the arrangement of the first group of sticks. The last of this group of kunzi The first is preferably made of a conductive material so that the fibers can be grounded before entering the overlay coating device. The device of the diffuser 18 can be of various types, including: smooth, or engraved or Convex rollers or rollers; air combs; air combs in combination with sticks or rollers; air jets; ultra-chamber dispersers; and liquid baths. The main consideration when selecting fiber yarn dispersers is whether they are capable Disperse into a wide band, preferably this width is only single fiber thick, and this disperser will not damage the fibers. Between the dispersing device 18 and the applicator 20, other process steps can be added according to different applications. For example, In the production of special-purpose prepreg yarns, a device for removing the fiber surface infiltrant, surface activation and application of a binder may also be used. The fiber 13 then enters the coating device 20 where the matrix resin material is applied to the fiber 13 The surface of the fiber Luo 13 remains in a dispersed state when entering and passing through the coating device 20. There are many types of coating devices that can be used, which will be illustrated below. However, the two methods of powder spraying device and static fluidized bed are more Appropriate. When using a powder spraying device, generally use this paper standard for the national standard (CNS) A 4 specifications (210X297 male dragon) ~ -34-(please read the back (Notes to write this page again)

2UW Λ 6 Β6 Printed by the Ordnance Consumption Cooperative of the Ministry of Economic Affairs, Biaoyang Bureau of Standardization V. Invention Instructions (Said the operating cost is lower. Various other coating systems, such as wet powder method, hot melt method and solution coating can also be used. a. The most simplified description of the fluidized bed fluidized bed device consists of a box 21 in which the matrix resin powder 22 is placed. Under the interaction of an air flow and mechanical vibration, the powder 22 fluidizes, in addition , The powder is charged by a high-voltage electrode 26 installed at the bottom of the housing 28. The electrode 26 can be made of a sharp pointed object or a thin wire like usual. There is an outlet 32 at the top of the box 21 of the coating device for flow The air 24 can escape through this outlet. The fiber passes through the upper and lower parts of several sticks connected to a metal frame in sequence, and does not achieve the purpose of grounding and dispersion at the same time. If it is well dispersed, the yarn is very thin , More powder can be applied, and the product obtained is more persuasive. If the fiber yarn is not dispersed before coating, the resulting prepreg yarn is very stiff, and the fibers in it cannot be coated completely. The final particles 22 are evenly dispersed within the housing 28 of the coating device. With electrostatic coating, the particle size range of the powder particles is controlled between 20 and 80 microns, and the average particle size is about 50 microns. It is smaller than this particle size And larger powders have also been used separately to produce flexible prepreg yarns. Powders with a particle size of less than 20 gm have been used successfully. In fact, these fine powders, especially particles with a particle size of less than 10 microns, are in flow Larger particles are coalesced in the bed. Coarse-grained powder with a maximum particle size of 250 microns is also used. However, the softness of the prepreg yarn decreases with the particle size of the powder used (please read the notes on the back side first Re-write this page) This paper uses the Chinese National Standard (CNS) A4 specifications (210x297 public goods) -35-Printed by the Beigong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs V. Invention description (Increase. Short fiber The resin can also be used as powder 22. When using recycled plastics, because recycled plastic powders are usually obtained by grinding, and the cost of the grinding process increases with the decrease of the average particle size, so generally Coarse particles are preferred. When considering the use of coarser-grained powders, it is necessary to balance the two opposite factors of flexibility and the degree of mixing required in the post-preg yarn post-processing. The microplate 34 is The air 24 creates a high resistance, which allows sufficient air to pass at a lower speed to fluidize the powder 22. Applying mechanical vibration to the microplate 34 can enhance fluidization and reduce air in the powder bed Gully flow and powder agglomeration in the fluid. The thickness of the powder in the fluidized bed is generally 2 to 4 inches. (50 to 100 mm) In the fluidized bed device 20, the particles of the powder 22 electrostatically adsorb the fibers. The charged powder particles 22 repel each other, and finally rise to the upper part of the box 21 to form a charged particle layer through which the fibers pass. In this example listed in this article, the C30 type electrostatic fluidized bed coating machine produced by Electrostatic Technology Co., Ltd. is used. The bed size is 15X 15cm. The output voltage is 0-90kV, and the air intake is 0-0.4 standard cubic meters per minute. Ionized air 36 is used in the fluidized bed device 20, which is generated by energizing the electrodes below the fluidized bed 33 to prevent accidental initiation of fluidized particles 22 due to electrical sparks. The air 24 used for fluidization must be dry and clean. Dirt in the air can clog the microplate 34 and cause uneven fluidization. The moisture in the air causes the powder 22 to agglomerate in the fluidized bed 33. Normally the pressure of the dry air 24 is between 200 and 700 kPa, and it flows through the diffusion plate per square meter every minute. The paper size is easy to use. China National Standard (CNS) A 4 specifications (210X297; ¢) (Please read the precautions on the back first (Fill in this page) 装-线 · -36-Printed by the Employee Consumer Cooperative of the Bureau of Standards, Ministry of Economic Affairs _Β_6 5. Description of the invention (the flow rate of 34 is about 1.5m3. The fluidized powder is obtained by controlling the fluidized air 24 Maintain fluidization. A common method of drying fluidized air is to use a silica gel drying column (not shown). In addition, the air can be dried by freezing. Moist air is passed into the drying column and passes through After a screen, it comes into contact with the silica gel. The moisture is separated in the drying column. The drying air 24 is then passed from the outlet of the drying column to the fluidized bed 3 3. The voltage used in the fluidizing device 20 is generally Between _ 3 0 and -100 kV. In most cases, negative electricity is used. The output voltage does not exceed approximately 1 kV. When the device is short-circuited to ground, the maximum output power cannot exceed the ignition energy of the powder particles 22 used. High required The voltage, depending on the properties of the powder being used, is generally between -35 and -90 k V. For example, polyester resins have a better coating effect when the voltage is less than or equal to-40 kV, while epoxy resins It is better to operate between -40 and 70 kV. Ethylene resins usually require a higher operating voltage, ranging from 60 to _75 kV. For PEEK, better coating results appear between 70 and 70 kV. Between 90kV. In order to collect and return the excess coating powder to the powder supply tank (not shown in the figure), a vacuum evacuation device (not shown in the figure) is also installed in the coating system. Typical exclusion The device is composed of one or more cyclones or bag filters (not shown in the figure), or a combination of the two. The exclusion device can be installed on the top, inlet and outlet, or around. The air discharge speed should be roughly the same as the inlet The speed of the air 24 is the same. In this example, the exclusion device uses a filter cartridge type exhaust device to collect the powder in one (please read the precautions on the back before filling in this page). Binding-Order _ Line · This paper China Standard (CNS) A4 specifications (210X297 public goods) -37-Printed by the Employee Consumer Cooperative of the Bureau of Standards, Ministry of Economic Affairs V. Invention description (Recovered in a vacuum bag filter. The exhaust tube draws air into the powder Finally, the powder is recovered by shaking the filter bag installed in the drum. The residence time of the fiber in the resin-coated container is generally about 1 to 5 seconds. The determination of this time should depend on the type of fiber and the degree of fiber dispersion. The type of plastic resin, the size of the particles, the operating conditions of the applicator, (such as air flow rate and electrostatic field), and the required resin content in the prepreg. After the fiber is coated, it is shown in Figures 1 and 8. , Into the heating furnace 16, or as shown in Figure 9, directly through a ceramic or other material heater 70. This heating process should be carried out as soon as possible after the fiber leaves the fluidized bed to ensure that the powder 22 melts and adheres to the fiber. Otherwise, charge decay or relaxation will occur and the powder will break away from the fiber. The temperature of the heating furnace 16 or the heater 70 depends on the fiber and resin powder 22. However, when determining the temperature of the heating furnace 16 or heater 70 and the residence time in the heating furnace 16 or heater 70, it should be ensured that the coated fiber stays in the heating furnace, the resin powder 22 does not Will reach its decomposition temperature. The temperature of the furnace should be high enough to melt all the plastic bases. The coated fiber can be heated by conduction or radiation. In this example, the heating furnace 16 is a Lundberg one-stage heating tube furnace with a maximum operating temperature of 1 200 * 0, a length of 75 cm, and an inner diameter of 5 cm. The typical residence time of prepreg in the furnace is approximately 2 to 20 seconds. In most cases, a residence time of less than 10 seconds is sufficient to liquefy the plastic and fuse to the longitudinal dimension. For some viscous melts, for example, the polymer is polyethylene, it often takes a longer time to promote the resin (please read the precautions on the back and then fill out this page). This paper standard is used in China National Standard (CNS) A Specifications (210 to 297 male dragons) — 38-21104 ^ Λ 6 Β6 Printed by the Ajiongzhi Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs V. Description of the invention (Infiltration of the fiber surface. Among the recycled waste plastic products, polyparaphenylene Diethyl dicarboxylate is usually counted as the plastic with the highest melting point. The melting point of polyethylene terephthalate is nearly 2 5 01C, so the temperature of the heating furnace must at least reach its melting point temperature, that is, 250T :, preferably set at 300t :, or even higher. In order to reduce the residence time in the furnace and strengthen the resin infiltration, the heating temperature can be set very high, and the material temperature will not reach the furnace temperature. When the heating furnace temperature exceeds 400 degrees, Most recycled plastics will degrade within a certain residence time. In this case, certain measures must be taken to remove the resin powder that has dripped into the heating furnace from the yarn, otherwise it will increase the fire. The possibility of powder coating. Powder coating uses powder coating to apply resin matrix material particles to the surface of the fiber. It can be carried out using an electrostatic spray gun or a friction electrostatic spray gun. The most basic design of an electrostatic spray gun is a tube It has a power supply electrode connected to a high-voltage generator. The powder particles are charged in a certain way, usually by driving airflow, through the barrel, and by the action of the electrodes. The charged powder particles are then transported to the surface of the fiber and bonded to the fiber , Thus coated. Since the fiber is grounded, a reverse polarity is generated between the charged powder particles and the fiber. In this example, the electrostatic spray gun is housed in a powder container, which is The fluidized bed is replaced. After leaving the disperser, the fiber enters the powder container. The powdered resin is transported into the spray gun to receive the charge, and then (please read the precautions on the back before filling this page). China BB home standard (CNS) A 4 specifications (210x297 male dragon) -39-2 a-4 A c 66 ΛΒ V. Description of invention (Re-spray to ground Above the fiber. Part of the charged powder particles are bonded and coated on the surface of the fiber, while the rest are recycled to the spray gun. The coated strands leave the powder container and enter the heating furnace. Process parameters of this method Including the air flow rate through the spray gun, the amount of powder inflow, and the size of static electricity. The selection of these parameters is mainly based on the nature of the fiber and resin material used. For example, when used! ^! ^! ^! ^-Gema AG 7 0 1-6 type electrostatic spray gun; the resin matrix material is nylon 11 powder with a particle size of less than 150 microns, and is mixed with some sulfonic black pigment; the fiber yarn is a 12K master fiber, which has been dispersed into 5 cm wide, under this condition Under the following conditions, the process conditions used are: air flow level is 0-7, powder flow level is 0-10, static electricity is 0 to -80kV. Table 1 lists the coating process parameters and values. (Please read the precautions on the back and then fill out this page) Employee consumption cooperation of the Ministry of Economic Affairs, Bureau of Standards, Du Printing, Table 1 coating process, value, linear velocity, air flow, powder flow, electrostatic size, resin weight (m / min), speed level, speed level (~ kV) content (%) 3.54 1.5 4.5 25 34.8 6.21 2.0 6.0 15 41-0 8.25 2.0 10.0 7 43.5 13.65 2.0 10.0 7 30.0 c. Wet powder coating process In the wet powder coating process, such as the suspension method or In the emulsion coating method, the resin matrix material is a wet powder. The fiber yarn enters the coating system. The standard of this paper is 20. The general specifications of China National Standards (CNS) A 4 (210 to 297 kg) -40-211 ^ ¾ Λ 6 156 Printed by the Employees Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (3 $ is not required to be grounded before. Therefore, the previously mentioned stainless dysprosium stick 17 is no longer needed in this method. After leaving the diffuser 18, the fiber can also pass through a The device is coated with an adhesion promoter. After the adhesion promoter is applied, the fiber enters the wet powder coating system, which consists of a stick applicator, a wet powder or emulsion storage tank, and a suspension pump The resin matrix material is suspended in a liquid medium, which can be water or a solvent. Aqueous liquid medium includes water, and sometimes a water-soluble binder. Solvent-based liquid medium includes a solvent, It also contains a soluble binder when needed. The fiber passes through the upper surface of the roller applicator, and the roller slowly rotates in the opposite direction to the fiber. The lower surface of the stick applicator and the suspension or emulsion in the storage tank Connected by. With non-stop Rotate, the roller will bring the suspension or emulsion to the upper surface, make it contact with the passing thread to be coated. The suspension pump can maintain the concentration of the suspension or emulsion uniform. The coated fiber leaves the roller coating After the coating, it enters a dryer where the water or solvent brought in during the suspension coating evaporates. If the resin is fused to the fiber surface, the water-soluble binder can also be removed. Then, the dried fiber It enters a melter, where the resin matrix material liquefies and wets the surface of the fiber. In the wet powder coating process, there is also a method that does not use a stick coater, but directly passes the fiber through the suspension or emulsion, and then directly Enter the dryer. D. Hot melt coating process Hot melt coating system is usually made by a stick applicator or an extruder (please read the precautions on the back before filling this page) Binding-Strapping-This paper size Use the Chinese National Standard (CNS) Grade 4 specifications (210X297 public waste) -41-Λ 6 136 Printed by the Ministry of Economic Affairs, Pingyang Bureau, Pinggongxiaot Cooperative V. Invention description (3d machine and a mold group) When the stick is used in the hot melt method, the operation method is the same as the wet powder method described above, but in this case, a suspension or emulsion storage tank is no longer used, but a hot melt storage tank containing a resin matrix material is used. Like the powder coating process, the stick coater can also be used, and the fiber can be directly passed through the hot melt storage tank. When the hot melt method uses an extruder and a mold operation, the dispersed fiber is drawn through a flat die, and The machine constantly supplies hot-melt matrix material to the mold and coats the fibers in the mold. The bottom of the mold is carved with a concave mold to divide the prepreg into multiple strands. When the hot melt of the resin matrix contacts the fibers, The fiber is immediately infiltrated. Therefore, it may not be necessary to set up another furnace to further complete the resin infiltration. In this process, some special equipment, such as a die with a groove or a stick applicator, may be required Use to help split the prepreg into multiple strands. e. Solution coating The solution coating process uses various solvents. In this method, the resin matrix material is dissolved in an appropriate solvent, and then the fiber is passed through this solution, or a stick soaked in the solution, to coat the fiber. The coated fibers pass through a dryer to evaporate the solvent. 6. Pre-impregnated yarn samples a. Heave fiber yarn / PEEK resin matrix material Use Hercules 6 K AS4 fiber yarn without any infiltrant, single fiber diameter 8 microns. The fiber passes through a jet of air, and the fiber (please read the precautions on the back before filling in this page) The paper size is free to use the China Sleepy Standard (CNS) A 4 specification (210x297 public release) -42-Λ 6 Β6 V. Description of the invention (4 () dimensional yarn is dispersed to about 60mm wide. The rollers located at the inlet and outlet of the diffuser create tension on the fiber yarn. The fiber yarn then passes through an electrostatic bed with PEEKV150VPF resin powder produced by ICI, average The particle size is 90 microns. The fiber yarn is connected to the ground, and the powder is charged at a negative voltage of 65kV. The fiber yarn passes through a tube heating furnace in a dispersed form under tension, and the temperature in the furnace is 45〇υ, melting PEEK The fiber yarn is then cooled in the air, and then passes through the driving stick, and finally reaches the winding package equipped with tension adjustment. The residence time of the fiber yarn in the powder applicator and the heating furnace is 1.4 seconds and 6 respectively. 7 seconds. Linear velocity is 6.8 meters per minute. The volume content of the fiber in the prepreg yarn is 60%. The flexural rigidity of the prepreg yarn is 890 mg_ cm, while the flexural resistance of the uncoated fiber yarn The stiffness is 6 7 OlDg — cm. By comparison After analysis, the stiffness of the pre-impregnated yarn after consolidation is about 216, OOOfflg — cm. B. Glass fiber yarn / PE EK resin matrix material uses S 2 glass fiber yarn of Owens Corning glass fiber company, each yarn contains single fiber 4 , 080 roots, treated with a high-temperature infiltrant, printed by the Employee Consumer Cooperative of the Ministry of Economic Affairs, Pyongyang Bureau (please read the precautions on the back before filling in this page). The fiber diameter is 9 microns. The resin matrix material is the same as the above example PEEK. Before contacting the last grounded stick, the glass fiber yarn is cleaned with a wet foam block to increase the surface conductivity. Then the fiber yarn passes through an electrostatic bed with PEEKV150 PF resin powder produced by ICI. The average particle size is 90 cm. The fiber is connected to the ground, and the powder is charged at a negative 70kV voltage. The fiber yarn passes through a tube heating furnace in a dispersed form under tension, and the temperature in the furnace is 45 0C. The standard side uses the Chinese S home standard (CNS) A4 specification (210x297 male dragon) -43-Λ 6 Β6 Printed by the Zhengong Consumer Cooperative of the Bureau of Standards, Ministry of Economic Affairs V. Invention Description (4)) PEEK melted. Fiber yarn Then cooled in the air, and then through the drive lifter, and finally reached the winding package equipped with tension adjustment. The retention time of the fiber yarn in the powder applicator and the heating furnace is 5.2 seconds and 26. 3 seconds. Linear velocity is 1.7 meters per minute. The body content of the prepreg yarn is 60%. C. Sulfon fiber yarn / LaRC — TPI resin matrix material uses Hercules ’6 KA S4 carbon fiber yarn without Any infiltrant treatment, single fiber diameter 8 microns. The resin matrix material is thermoplastic polyimide La RC TR I. The preparation method of prepreg is described in Example a. After the fiber yarn passes through the air flow disperser and the sticks located in front of and behind it, it enters an electrostatic bed containing LaRC TP I powder produced by Rogers with an average particle size of 35 microns. The fiber yarn is connected to ground, and the powder is charged at a negative voltage of 67 kV. The fiber yarn passes through a tube heating furnace in a dispersed manner under tension, and the temperature in the furnace is 400C, melting TPI. The fiber yarn is then cooled in the air, then passed through the driving stick, and finally reaches the winding package equipped with tension adjustment. The residence time of the yarns in the powder applicator and the heating furnace was 3.2 seconds and 16 seconds, respectively. The line speed is 2.9 seconds per minute. The volume content of the yarn dimension in the prepreg yarn is 37%. The flexural rigidity of the prepreg yarn is 7,000 mg_cm, while the flexural rigidity of the uncoated fiber yarn is 6 7 Omg- 7. Post-processing of the prepreg yarn. Home Sample Standard (CNS) Grade A 4 (210x297cm) (please read the precautions on the back before writing this page) -44-211542 Λ 6 Printed by Beigong Consumer Cooperative, Bureau of Standards, Ministry of Economic Affairs Description (a. Overview After the fiber 13 is infiltrated by the resin-based skeleton material in the coating device 20, the prepreg yarn 50 may pass through a set of polishing sticks 46 as needed. This set of rollers 46 may be set in the heating furnace 16 or heated The device 70 can also be placed close to the outlet of the heating furnace 16 or the heater 70. However, in any case, the position where the stick 46 is installed in the device 8 must be in a state where the resin matrix material is still liquid. The role of the wheel 46 is to force the liquid matrix resin into the fiber yarn strands for better wetting, and to reduce the strand-to-strand ratio caused by the resin-based skull droplets retained and consolidated on the outer surface of the yarn strands The surface resistance between them. Because the strands of the prepreg are very thin The prepreg yarn 50 cools quickly after leaving the heating furnace 16 or heater 70. Air cooling is usually sufficient. Of course, in some occasions, if a blower, cooling stick or similar device is used, it can also bring certain Benefits. It is very important during the cooling process to maintain sufficient tension in the dispersed yarn strands, otherwise the various yarn strands in the prepreg yarn will loosen and stick to each other, making the prepreg yarn very flexible in stiffness It is also important to prevent the individual fibers of the prepreg from contacting each other during consolidation, which will result in strong inter-strand bonding. If necessary, the heating furnace 16 or heater 70 can also be used. After that, convection cooling is provided (not shown in the figure). Conductive cooling can also be used. Conductive cooling requires surface contact, which can prevent the lateral movement of the fiber yarn. After cooling, some of the mechanical devices described above can also be used Carry out the split. But it is not good to rely on the split after cooling alone, because it will cause fiber damage beyond the limit. Generally speaking, the resin in the prepreg yarn (Please read the precautions on the back before filling out this page) This paper uses the Chinese National Standard (CNS) A4 specifications (210x297 male dragon) -45-211d43_Be printed by the consumer cooperation of the Bureau of Standards of the Ministry of Economic Affairs. Description of the invention (4¾ The volume content of the substrate must be above 25%. Only in this way can a structure be substantially free of bubbles, which can be used for further processing into the final laminated material structure. The main function of the pinch wheel is in the processing process Pull the fiber yarn 1 1, and apply sufficient tension to the strand yarn to prevent it from loosening laterally. There are many types of devices used to pull the fiber, including mechanically driven pinch wheels, preferably coated with rubber ; There is also a friction roller, preferably with a rubber surface coating. The package device 12 may be any conventional fiber yarn package with tension adjustment. In addition, the prepreg yarn 50 can also be directly transported to the next processing process, such as a cutting machine, to produce raw materials for sheet or bulk molding compound. b. Ribbon-shaped product The ribbon-shaped product of the prepreg is produced, as shown in FIGS. 8 and 9, after the fiber 13 is wetted by the resin matrix material in the coating system 20, the prepreg 49 is sent到 成 带 区 20。 The zone 20. The tape forming device most preferred for use in the present invention is the use of two matching sticks, one with a groove (60) engraved on its surface, and the other stick 62 with a bump. Fig. 10 and Fig. 11a show the structures of the rollers 60 and 62. The bumps of the roller 62 and the grooves of the roller 60 are matched with each other and coincide. When the powder sinter-coated fiber yarn 49 passes between the grooved stick 60 and the bumped stick 62, the powder sinter-coated fiber 49 is transformed into a known geometry Pre-impregnated yarn ribbon products. Fig. 11b shows another configuration of the roller 6 0 with recesses and the roller 6 2 with protrusions. In this paper, please use the China Sleepy Family Standard (CNS) Grade 4 specifications (210x297 public goods) (please read the precautions on the back before writing this page). Binding and binding. -46-211542 Λ 6 Β6 Ministry of Economic Affairs Printed by the Beigong Consumer Cooperative of the Central Bureau of Standards V. Description of the invention (In Π, the groove is a continuous concave shape, and the convex block becomes a continuous convex shape, the concave surface and the convex surface are mutually Matching. As shown in Figure 1 1 a, the bump structure of the roller 6 2 matches the groove of the roller 6 0, matching each other. The flexible multi-strand prepreg passes between the sticks 60 and 62, so The pre-impregnated yarn 4 9 is transformed into a belt-shaped product 50 of a certain geometric shape. The sticks 60 and 62 generally interact through a cylinder 64 mounted on one of the sticks under a certain pressure, and other Pressing methods, such as springs or hydraulic cylinders. The rollers 60, 62 are installed at the exit of the thermal fusion coating production line, that is, the belt zone, which takes the separation step 109 shown in Figure 1. Figure 8 shows , Kunzi 6 ◦ and 62 are installed in the melting step 107, which is the heating furnace 16 and the package step 10 07, also It is between the winders 1 and 2. In this example, the flexible multi-ply prepreg yarns come out of the heating furnace 16 and consist of a heater 6 6 pairs of yarn strands 4 installed near the gap between the two rollers. 9 Heating to maintain its temperature. Focused quartz infrared lamp is a suitable heater 66 to heat the yarn 49 to maintain its temperature. Focused quartz infrared lamp is a suitable heater 66. For example, 74.285 type produced by Argus company , The power is about 250 watts, controlled by -3PN 1 0 1 0 Staio autotransformer. The diameter of the grooved handle 60 is about 12. 5cm, the width is 2. 5cm, the width of the groove is 1. 25cm, depth 0.31cm. The diameter of the stick 62 with the concave block is about 12. 5cm, width 2.5cm, the width of the convex block matching the groove is 1. 25cm, and the height is 0.3 1 cm. It is usually cold roller. It can be loosened by fiber 04. Separate the size of the paper. Use 8 Chinese standard (CNS) A4 specifications (210x297 public goods) (please read the precautions on the back and fill in this page). · -47-Λ 6 136 Printed by the employee consumer cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of invention (4 present, so separate step 1 09 is often not needed. In addition, the cooling step 112 can often be accomplished by these sticks, or by contacting the fiber 104 with the surrounding air. The prepreg 49 is drawn through a roller 60 and 62 by a winding device 12 When the fiber passes through the pressure device 64, a stick is pressed to another stick. The cylinder is a suitable pressure device 64, such as the type 091.5D produced by Bimba, equipped with the type 1Z838B produced by Speedaire pressure controller. A suitable air cylinder can produce a force of about 20 psig on a 0.5 inch wide prepreg 4 9. When the stick 62 with bumps is used, the prepreg is forced into the gap between the groove and the bump, and the roller between the groove and the rollers 60, 62 with bumps The geometric dimensions of the gap are fixed. The pre-impregnated yarns are pressed together in this gap to form a flexible strip 50 with a certain geometric size. The producer selects the size of the groove of the roller 6 0 and the bump of the roller 6 2 according to the needs to produce the band-shaped product 5◦ with the desired geometric size. When a stick 62 with a convex surface is used, the prepreg yarn enters between the concave surface and the convex surface under the action of an external force, and is pressed together at the jacket, thereby forming a flexible band-shaped product 50 of known geometric size. The producer selects the relative radii of the concave stick 60 and the convex stick 62 as needed to produce a band-shaped article 50 of a desired geometric size. The rollers 60 and 62 are usually cooled with air to solidify the resin matrix, so that the belt-shaped product 50 can be handled. The strip-shaped product 50 is then rolled by a guide wheel 68, and is wound up by a winding device. In the example shown in FIG. 9, the stick replaces the heating furnace 16. If (please read the precautions on the back before writing this page) Binding-Thread · Thread · This paper is used in the edge of the home 8 standards (CNS) Ή specifications (210X297 mm) -48-211 ^ 42 Λ 6 Β 6 Printed by the Employee Consumer Cooperative of the Bureau of Standards and Economics of the Ministry of Economic Affairs 5. Description of the invention (called not using a heating furnace 1 6, usually a second heater 70 is used. Ceramic heaters can be suitable for this purpose, such as GTE Sylvanza Ceramic heater with a power of 500 watts and a size of 12. 5X6.25 〇111, equipped with an 8 & 1 ^ 61 *-(1: 〇1611 ^ 115 6〇 type controller. The function of this heater 70 is to use To melt the powder 22 to obtain a powder sinter-coated prepreg yarn 49. The prepreg yarn 49 then passes through the belt forming zone described above in conjunction with Fig. 8. The power of the heaters 6 6 and 7 depends on the power For the material and the linear speed of production. For the production of 6K fiber yarns, coated with PEEK resin, the linear speed is 1.5 meters per minute to make a 1.25cm wide belt, the heater mentioned above can be applied Now another example. The banding zone is composed of a convex or concave stick 60, as shown in Figures 12 and 13 The fiber yarn 49 coated with powder sintering passes a certain point on the circumference of the stick 60 under tension. Under the combined effect of the tension and the concave shape of the roller, the fiber yarn moves to the lowest point of the concave surface, so that the pre-impregnated yarn 49 is transformed into a strip material of a certain geometric shape 5◦. The tension on the prepreg yarn can be provided by the winding device 12 or other types of devices not shown in the figure. By changing the relative radius of the concave structure of the roller 60 and The tension acting on the fiber yarn 49 will result in the fiber yarn 49 being merged together and transformed into a flexible ribbon material 50 of a certain geometric size. As in the previous example, the stick 60 can also be cooled, thereby allowing the resin matrix material It is cured to make the ribbon material 50 easy to handle. The ribbon material 50 is then rolled up by the guide wheel 68 through the winding device 12. In addition, as long as the tension on the fiber yarn is sufficient to make the flexible paper size easy to use a B Standard (CNS) Grade A 4 specifications (210X297) (Please read the precautions on the back before filling in this page) -49-211 ^ 42 Λ 6 L36 Ministry of Economic Affairs 屮 央 橾 准 局 员 消 #Cooperative print System 5. Description of the invention (The multi-stranded prepreg yarns are transformed into ribbons, and one or more flat surface lifters can also be used. Figures 20, 21 and 22 are photographs of the cross-sections of prepreg yarns produced by the present invention. The impregnated yarn is made of glass fiber and polypropylene matrix material. Figure 23 is a photo of the polypropylene and glass fiber ribbon material prepared by the present invention. Figure 2 3 a ribbon material is a line at 3 meters per minute The speed is prepared under the condition of a 114 infrared lamp molten resin material, and the pressure on the stick is 275kPa. The preparation conditions of the belt-shaped material of Fig. 23b are: linear velocity of 1.4 meters per minute, the resin matrix material is melted at 37010, and the pressure on the stick is 275 kPa. The band material made of powder sintered pre-impregnated yarn by the method of the present invention has a specific geometry and is suitable for different processing methods such as filament winding, advanced laying processes, and pultrusion. In the filament winding method, a mandrel with the same shape as the final product is used, and the _dimensional yarn is wound around the mandrel. The fiber placement rack moves a certain distance back and forth along the mandrel, which is controlled by an open loop controller. Since it is open loop, the controller does not monitor the width of the fiber yarn. If the width of the laid fiber yarns is too narrow, a gap will be generated between adjacent fiber yarns; on the contrary, if it is too wide, the adjacent fiber yarns will add to each other. Both cases will affect the quality of the final product. The advanced laying process also has similar requirements for filament yarn winding. In the pultrusion process, the yarn bundle is pulled through the die to form a continuous two-dimensional shape. If the veil yarn fed into the mold does not have a certain geometric shape, it will inevitably be rearranged in the mold, resulting in fibers in the final product (please read the precautions on the back before filling in this page) Standard (CHS) A 4 specifications (210X297 ¢) -50-Λ 6 Β 6 211542 V. Description of invention (called uneven dispersion, otherwise the fiber or mold will break. The rearrangement of this fiber creates friction resistance, It leads to an increase in traction, which can also cause fibers and even die damage. The emergence of these problems indicates the need to use prepreg yarns with a certain geometric size. In addition, flexible pre-impregnation processes such as filament winding and pultrusion are required. Impregnated yarn is used as a raw material to ensure the quality of the final product. The flexible multi-strand prepreg ribbon material of the present invention can achieve accurate geometric shape and flexible properties. C. Non-woven fabrics are shown in Figure 14-17 It is shown that when the prepreg yarns 133 are cooled, or after cooling, they are combined manually or mechanically to form a desired or suitable structure. It can be prepared into an ideal fabric 139. For example, the prepreg yarn 133 can be arranged in a unidirectional direction as shown in FIG. 14a, or can be arranged in a multidirectional direction as in 15a, or any other direction. The impregnated yarns 133 are laid on top of each other and combined together to become the nonwoven, flexible, multi-strand prepreg yarn fabric of the present invention. There are many ways to combine the prepreg yarns 133 together. At the selected point, they are connected by hot melt to make a prepreg yarn fabric with point connection 137. Other methods of combining prepreg yarn 133 include sewing or weaving with binder fiber or yarn; needle punch; water Hammer or pressure point connection. Figure 17 shows that the fabric 139 made by the suture 138 is very good. The photo Η in Figure 24 is a unidirectional prepreg non-woven fabric formed by interweaving fibers. The multi-head placement equipment can be used to Pre-impregnated yarn 133 is made into 3D non-standard paper, and the Chinese National Standard (CNS) < 1 Specification (210x297 gong) (Please read the precautions on the back before writing this page) Order _ Line _ Printed by the Ministry of Economic Affairs, Pyongyang Bureau of Zhengong Consumer Cooperatives-51 Printed by the consumer cooperative, for example, _B6_ V. Description of the invention (4-bow woven fabric, non-woven fabric with overdyed shape and two-dimensional or three-dimensional pre-formed skeleton. The shape of the fiber-laying mandrel can be obtained from different tables The final shape of the fabric or preformed skeleton is produced. These products of the present invention can be suitable for the manufacture of various laminated material structures. Nonwoven fabrics can be laid into high-grade like the thermosetting prepreg yarns for sticky hands Laminated material structure. Non-woven fabrics can be made into preforms for resin transfer molding or molding. Tubing method can be used to make tubular preforms. This type of work is often used to prepare golf clubs and nets. Rackets and sailing masts. In addition, a low-cost two-dimensional fabric can also be prepared and used in the subsequent process. The product of the present invention compares with the weaving or weaving of flexible multi-ply prepreg yarns The price is low. With the technology of the present invention, fabrics containing resin materials that are solid at room temperature can be made very flexible. However, the fabrics produced by the conventional technology are very stiff. The present invention is made of a solid resin matrix The fabric is both flexible and well infiltrated. Both the resin matrix and the reinforcing fibers use a fiber-shaped fabric structure, such as mixed yarn, mixed weave, or fiber layer, and the resin layer is alternately laid, although it is also flexible However, it can not achieve resin infiltration of fibers, so in the consolidation process, this dual-fiber structure requires more harsh processing conditions than the fabric of the present invention. All the above descriptions are for illustrative purposes only, and It is not intended to limit the scope of the method of the present invention. The following is the scope of patent application for the present invention. (Please read the precautions on the back before writing this page) Binding-Binding-Line-This paper standard is used in the S national standard (CNS) A 4 specifications (210x297 male dragon) -52-

Claims (1)

4.1〇AT B7 C7 D7 The Ministry of Economic Affairs Central Standards Bureau employee consumer cooperative printed six 'Shen Yong Patent Fan Garden 1 method for producing a kind of improved and flexible prepreg yarn composed of many prepreg yarns, These prepreg yarns contain reinforcing fibers and resin matrix materials. The production method includes the following steps: (a) Disperse a fiber yarn composed of many reinforcing single fibers, so that these reinforcing fibers are dispersed but still maintained Integral; (b) Coat the reinforcing fibers with a resin matrix material to create an interfacial bond between the resin matrix material and the reinforcing fibers; (c) Liquefy the resin matrix material in contact with the reinforcing material to coat it on the reinforcing material Above, prepreg yarns are formed. 2. The method as claimed in item 1 of the patent scope further includes the following steps: (d) Cooling the prepreg strands. During the cooling process, the adjacent yarn strands are prevented from sticking until the resin matrix material solidifies. 3. The method as claimed in item 2 of the patent scope further includes the following steps: (e) Separating the coated reinforcing fibers from each other. 4. The method as claimed in item 1 of the patent scope further includes the following steps: (d) Passing the hot-sintered prepreg yarn through a forming device to produce the sinter-coated prepreg yarn Band material. 5. The method as claimed in item 4 of the patent application, in which the forming device generates pressure on the sintered prepreg yarn. 6. For example, the method of claim 5 of the patent scope, in which the preparation is fused (-read the precautions on the back side and fill in this one) ”The paper size is generally applicable to the“ Family Standard (CNS) T4 specification (210x297 ^ 81 2. 2.500 (H) -53 — AT B7 C7 D7_ VI. Patent application SB Coated prepreg ribbon material is carried out at a suitable temperature of the resin matrix material. 7. As claimed in item 6 of the patent scope The method further includes the step of cooling the prepreg strands. During the cooling process, the adjacent prepreg strands are prevented from bonding to each other until the sinter-coated prepreg yarn is converted to the sinter-coated yarn Pre-impregnated yarn ribbon material 8. The method as claimed in item 4 of the patent application, in which the ribbon material molding process is completed by two or more matching rollers, at least one of these sticks The circumference of the roller is gradually convex, and there is at least one roller whose circumference is gradually concave, so that the sintered prepreg yarn passes through the gap between the convex and concave sticks , At least one roller is under force , So as to further transmit the force to the prepreg yarn that is being sintered and coated by this roller. '9. The method as claimed in item 4 of the patent application, in which the forming process of the strip material is stepped down by a circle After the roller of the concave structure is completed, the sintered coated prepreg yarn is under tension and is located at a certain position in the concave circumferential structure. 10. The method of item 2 of the patent application scope further includes the following steps : (E) Lay multiple layers of prepreg yarns together to form a multi-layered prepreg yarn structure; (f) Connect laid together prepreg yarns to form a nonwoven prepreg yarn fabric. 1 1 . The method as claimed in item 10 of the patent scope, wherein the multi-layered paper is suitable for size; 丨 Η, Η 掂 渂 准 (CNS) 〒 4 specifications (210 X '297 public " ^) 21154221164- (Jing Xianwen Read the back of the page; ± Issues and then fill out this page) 81. 2. 2.500 (H) -54-211 ^) 42 A Printed by the employee consumer cooperative of the Central Bureau of Standards of the Ministry of Economy VI. Shenm Lifan so prepreg in step e The middle paving is stacked into a one-way structure. 12. If the patent application scope item 10 Method, wherein the multi-layer prepreg yarns are laid up in a multi-directional structure in step e. 13. The method as claimed in item 10 of the patent application, wherein the method of connecting the prepreg yarns together includes: hot melting, seam stitching , Needle punch, pressure point connection, liquid hammer, entanglement, binder fiber blending, binder yarn blending. 14. The method as described in item 10 of the patent application, in which steps e and f are repeated multiple times. 15. The method as claimed in item 2 of the scope of patent application further includes the following steps / (e) laying multiple layers of prepreg yarns together to form a multilayer prepreg yarn structure; (f) arranging the prepreg yarns into The required preform structure; (g) The prepreg yarns are connected together to form a preform. 16. The method as claimed in item 15 of the patent scope, wherein steps e, f, g are performed in any order. 17. The method as claimed in item 15 of the patent scope, in which steps e, f and g are performed simultaneously. 1 8. The method as claimed in item 15 of the patent scope, in which steps e, f, g are carried out multiple times by weight. 19. The method as claimed in item 2 of the scope of patent application further includes the following steps: (e) Constructing multiple strands of prepreg into a composite product. (-W read the precautions on the back and then write this page). Line ·-The paper size is suitable; Π 屮 SW home standard iMCNS) T4 specification (210x297 public If) 81. 2. 2.500 (H) -55 One ... B7 ct — ----------- D t -------- --- VI. Shenmao Patent Court a 20. If applying for patents No. 1, 2, 3, 4, 10 , 15 or 18, wherein the resin matrix material further contains unused fresh plastic. 21. The method of items 1, 2, 3, 4, 10, 15, or 18 of the patent application scope, in which the resin-based skeleton material is mainly composed of recycled plastic. 22. The method as claimed in items 2, 3, 4, 10, 15 or 18, wherein the resin matrix material is first chopped, then ground into a powder, and then coated onto the reinforcing fiber. 23. The method of claim 22, where the resin matrix material is mainly composed of a mixture of fresh plastic and recycled plastic. 24. The method as claimed in item 21 of the patent scope, in which the resin-based skeleton material is mainly composed of a recycled plastic. _2 5. The method as claimed in items 1, 2, 3, 4, 10, 15 or 18, wherein the dispersion is lateral dispersion. 26. The method as claimed in items 1, 2, 3, 4, 10, 15 or 18, wherein the distribution and dispersion of the reinforcing fibers are maintained by the axial tension of the reinforcing fibers. Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 27. The method of applying for items 1, 2, 3, 4, 10, 15 or 18 of the patent application, in which the resin matrix material is in contact with reinforcing fibers in powder form of. 28. The method of claim 27, wherein the average diameter of the particles contained in the powder is more than twice the average diameter of the reinforcing fibers. 29. If applying for patents 1, 2, 3, 4, 10, 81. 2. 2.500 (H) (please read the precautions on the back before filling out this page), the paper and the standard are appropriate, 丨, Η home Standard (CNS) specification (210x297 public If) -56-A 7 B7 CT DT 2ii042 Six 'patent application ® (; ί first read the precautions on the back and then fill out this page) 1 5 or 18 method, resin The matrix materials include the following types: ABS, acetals, acrylics, alkyds, allyls, amines, epoxy, fluoroplastics, furans, melamines, nylons, phenolic, Phenyl oxides and phenyl ethers, polyamines, polyaldimine-aldialdehydes, polybutenes, polyesters, polyesters, polydiether ketones, polyether ketones, polyimide ethers, Polyethylenes, polyimides, polymethylpentenes, polysulfide benzenes, polypropylenes, polystyrenes, polyurethanes, inkstones, ureas and vinyls, mixtures of the above materials , Copper, low-melting metal, ceramic mother compound. 30. The method as claimed in items 1, 2, 3, 4, 10, 15 or 18, wherein the average diameter of the fiber does not exceed 25 meters. 31. The method as claimed in item 30 of the patent application, in which the fiber is intertwined. 32. The method of claim 31, wherein the melting point of the fiber is higher than the consolidation temperature of the prepared prepreg. 33. For example, if the patent application is 1, 2, 3, 4, 10, the Ministry of Economy, Central Standards, Bureau of Labor and Consumers Cooperatives printed a method of item 15 or 18, where the fiber is grounded. 34. The method as claimed in items 1, 2, 3, 4, 10, 15 or 18, wherein the fiber is selected from the group consisting of glass fiber, primary fiber, graphite fiber, organic fiber, ceramic fiber, metal fiber and blended fiber Form a group. 35. The method of claim 34, wherein the organic fiber is selected from those liquid crystal fibers having a high melting point. 81. 2. 2.500 (H) -57-AT one BT2110 ^^ ct--~~ -_ D7 Sixth, Shen Qi patent. "L® 36. The method of applying for patent scope item 35, in which the blended fiber It is selected from the group consisting of aldamine / master; amide / glass; amide / master / glass and master / glass fiber. 37. The method of items 1, 2, 3, 4, 10, 15 or 18 of the patent application scope, in which the fibers are separated from each other during the cooling process 38. If the patent application scope is 1, 2, 3, 4, The method of item 10, 15 or 18, wherein the fibers are separated from each other before the cooling process. 39. The method as claimed in items 1, 2, 3, 4, 10, 15 or 18, wherein the reinforcing fibers are impregnated with the resin matrix material to a considerable extent. 40. If applying for patent scope items 1, 2, 3, 4, 10, (Li first read the precautions on the back and then fill in this page. The method of printing 15 or 18 items in the Beihang Consumer Cooperation of the Central Standards Bureau of the Ministry of Economic Affairs, of which The average length of the yarn strand is greater than its average width. 4 1. The method as claimed in item 40, wherein the average width of the yarn strand is greater than its average thickness. 42. The method as claimed in item 41, wherein The average length is at least 30 times the width. 43. The method as claimed in item 1, 2, 3, 4, 10, 15 or 18, wherein the volume content of the resin matrix material in the prepreg strand exceeds 2 5%. 44. The method as claimed in item 1, 2, 3, 4, 10, 15 or 18, wherein the average thickness per share of the prepreg strands ^ paper-like leather 剌, (5W5: (CNSVP tilt if (21〇x2 {) 7 male D gi " 2 2 500 -58-,-order ·-: line · Λ I 2ϋ〇4 < ^ Β7 C7 D7 VI. Application for patent court ® less than about 1 0 〇 Micron. (Please read the note on the back first and then fill in this VK) 45. If the method of applying for patent scope item 44 The average thickness of the prepreg strands per share is less than 75 microns. 46. The method as claimed in item 45 of the patent application, wherein the average thickness of the prepreg strands is about 100 to 50 microns per share. 47. The method as claimed in item 46, wherein the average thickness of the prepreg strands is approximately between 5 and 30 microns. 48. As claimed in item 2, 3, 10, 15 or 18 Method, in which the coated reinforcing fibers are grouped to form prepreg strands during the cooling process. 49. As in the method of patent application scope item 2, 2, 3, 4, 10, 15 or 18, it is dispersed Between the step and the coating step, a step of removing the sizing agent of the reinforcing fiber is further included. • 50. The method as described in items 1, 2, 3, 4, 10, 15 or 18 of the patent application scope, which is dispersed Between the step and the coating step, there is also a step of applying an adhesion promoter or wetting agent to the reinforcing fibers. 51. For example, if the scope of patent applications is 1, 2, 3, 4, 10, the Ministry of Economic Affairs Central Standards Bureau employee consumption cooperation The method of printing 15 or 18 items, which is scattered Between the step and the coating step, a step of surface activation of the reinforcing fiber is also included. 52. The method of items 1, 2, 3, 4, 10, 15 or 18 of the patent application scope further includes a collecting step 53. If the method of applying for items 1, 2, 3, 4, 10, 15 or 18 of the patent application scope further includes a polishing step. 54. If applying for patents No. 1, 2, 3, 4, 10, 81. 2. 2.500 (H) wood paper standard) IH, B Η home standard (CNS) specifications (21〇 > < 297 public ^ -59 i 21: Lo4 < J ---- -D7_ 6. The method of applying for patent gardens 15 or 18, wherein the coating step is completed by a static current fluidized bed device. The method of item 1, 2, 3, 4, 10, 15, or 18, wherein the coating step is performed by a powder spraying device. 56 ·-A flexible and pre-preg yarn with improved properties, It is composed of many prepreg yarns; the prepreg yarns are composed of reinforcing fibers and resin matrix materials; the reinforcing materials are dispersed, but still remain integrated, and then largely infiltrated by the resin matrix material, so doing The prepreg strands are fully consolidated into a composite product, and the average thickness of the prepreg strands is less than 100 microns. 57. A flexible and flexible prepreg ribbon material with known geometric shapes and properties , Which contains the prepreg yarn as claimed in item 56 of the patent application, wherein the prepreg The strands are converted into prepreg tapes, so the gaps contained in the prepreg strands are less than those of the prepreg tapes. 58. For the prepreg tapes of item 57 of the patent application, the common reasons include It is produced by the following steps: (a) providing reinforcing fibers and resin matrix materials; the Ministry of Economic Affairs Central Bureau of Standards and Staff's consumer cooperation du printing (b) coating resin matrix materials with reinforcing fibers; (c) reinforcing fibers and The resin matrix material is heated to liquefy the resin matrix material in contact with the reinforcing fibers and coated on the surface of the reinforcing fibers, thereby making a sintered coated prepreg yarn; (d) passing the sintered coated prepreg yarn through a The forming device applies a forming force to transform it into a frit-coated prepreg ribbon 81. 2. 2.500 (H) (-Read the precautions on the back side before filling in this book ^) 'Wood The paper is also suitable for the Sichuan FLL W Family Standard (CNS) T4 specification (210x297 ϋ -60-Shen Yong Patent Range a AT B7 C7 D7 Ministry of Economic Affairs Central Standards Bureau staff consumption of printed materials. 59.-kind of nonwoven Pre-impregnated yarn fabric, which is made up of many It is composed of the prepreg yarn in the 56th range of the patent application, in which multiple layers of the prepreg yarn are laid together and then connected together to make a fabric of nonwoven prepreg yarn. It is made of a non-woven prepreg yarn with patent application scope item 59, in which more than one layer of prepreg yarn is laid up and then connected into a desired configuration to make a preform. 6 1. A composite material product made of many prepreg yarns as claimed in item 56 of the patent application, in which many prepreg yarns are arranged into a desired configuration, and then they are connected into a composite material product structure The preform is then further processed into a composite material product. '6 2. A composite material product, which is composed of many prepreg yarns as claimed in item 56 of the patent application range, in which the resin matrix material in the prepreg yarns is composed of recycled plastics; the reinforcing fibers are largely Wetted by the resin matrix material, the void content of the prepreg strands is lower than that of multiple prepreg yarns. 63. The prepreg yarn according to any one of claims 56-62, wherein the average thickness of the prepreg strands is less than 75 microns. 64. As for the prepreg yarn of item 63 in the scope of the patent application, the average thickness of the prepreg strands in > is from 1 ◦ to 50 metre. 65. The prepreg yarn as claimed in item 64 of the patent application, wherein the average thickness of the prepreg strands is 10 to 30 cm. (Please read the precautions on the back first and then fill out this page) The size of this paper is suitable 丨】 屮 Η Η family standard (CNS) f 4 specifications (210 X 297 public 81. 2. 2.500 (H) 61-211542 B7 C7 D7 Employee's consumer cooperation of the Central Bureau of Standards of the Ministry of Economic Development and Printing 66. For example, the prepreg tape material of any one of the patent application items 56-62, in which the yarn strands in the prepreg yarn are shared by 67. Non-woven prepreg fabrics as claimed in item 59, wherein the multi-layer prepreg yarns are laid in a unidirectional configuration. 68. Non-woven fabrics as claimed in item 59 A fabric of prepreg yarns, in which multiple layers of prepreg yarns are laid out in a multi-directional configuration. 69. A fabric of nonwoven prepreg yarns as claimed in item 59 of the patent application, wherein the prepreg yarns utilize a material selected from Connected together by methods: thermal fusion, seam, needle punch, pressure to melt the resin matrix material, pressure point connection, liquid hammer, ring knot, binder fiber blending, binder yarn blending. 70. Patent application Scope 62 of composite materials , Where the resin matrix material is composed of unused fresh plastic. 71. As for the composite material product of the patent application scope item 62, wherein the resin matrix material is mainly composed of recycled plastic. 72. If the patent scope application 62 items of composite materials, wherein the resin matrix material is mainly composed of a plastic mixture. 73. For example, in the scope of the patent application of item 62, the resin matrix material is mainly composed of a recycled plastic. 74. If the application Articles of patent range 56-61, in which the content of voids in the prepreg strands is lower than that of the prepreg. (Kong first read the precautions on the back and fill in this copy? {) The paper size is suitable for Sichuan. HW Home Standard (CNS) T4 specification (210x297 mm) 81. 2. 2.500 (H) -62