CN113085311A - Multi-fiber reinforced thermoplastic resin composite material and manufacturing method thereof - Google Patents
Multi-fiber reinforced thermoplastic resin composite material and manufacturing method thereof Download PDFInfo
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a multi-fiber reinforced composite material, which comprises at least one A layer and at least one B layer; the layer A is an organic fiber reinforced thermoplastic resin composite material; the layer B is an intermediate thermoplastic resin bonding layer; the layer C is an inorganic fiber reinforced thermoplastic resin composite material, and the composite material disclosed by the invention can play a skeleton supporting role by adopting an inorganic fiber reinforced thermoplastic resin material, so that high strength, high modulus, high rigidity and creep resistance are realized; the organic fiber reinforced thermoplastic resin material has the characteristics of high strength, impact resistance, low temperature resistance and corrosion resistance; the multi-element composite material disclosed by the invention realizes the combination of rigidity and flexibility, and the application field and the use value of the multi-element composite material are greatly expanded.
Description
Technical Field
The invention relates to the technical field of material products, in particular to a multi-fiber reinforced thermoplastic resin composite material, a manufacturing method thereof and a product.
Background
The Fiber Reinforced Plastic (FRP) is a composite material formed by winding, molding or pultrusion of a reinforcing fiber material, such as glass fiber, carbon fiber, basalt fiber, ceramic fiber, aramid fiber and the like, and a base material. Common fiber-reinforced composite materials are classified into inorganic fiber-reinforced composite materials and organic fiber-reinforced composite materials according to the difference of the reinforced materials. The composite material can be classified into fiber-reinforced thermosetting resin composite material and fiber-reinforced thermoplastic resin composite material according to the difference of the reinforced resin.
The fiber reinforced composite material has the following characteristics: (1) the specific strength is high, and the specific modulus is large; (2) the material performance is designable; (3) the corrosion resistance and the durability are good; (4) the thermal expansion coefficient is similar to that of concrete. The characteristics enable the FRP material to meet the requirements of modern structures on large span, high rise, heavy load, light weight, high strength and work development under severe conditions, and can also meet the requirements of industrialized development of modern building construction, so that the FRP material is more and more widely applied to the fields of various military and civil spaceflight, airplanes, high-speed rails, buildings, bridges, highways, oceans, hydraulic structures, underground structures and the like.
The fiber reinforced composite material is mainly an inorganic fiber reinforced thermosetting resin composite material in the market at present, and the thermosetting resin and the inorganic fiber have interfacial compatibility and permeability, so that inorganic fiber monofilaments can be fully wrapped to achieve better composite characteristics. However, such composite materials have significant disadvantages. 1. The inorganic fiber reinforced thermosetting resin can not be recycled, thereby wasting resources and polluting the environment; 2. the inorganic fiber reinforced thermosetting resin has low molding efficiency; 3. inorganic fiber reinforced thermosetting resins can generate a large amount of chemical VOCs during processing; 4. inorganic fiber reinforced thermosetting resins have poor impact resistance. Although the inorganic fiber reinforced thermoplastic resin is developed more rapidly, it overcomes some disadvantages of inorganic fiber reinforced thermosetting resin, and the impact resistance is poor due to the low elongation at break of the inorganic fiber, and thus the inorganic fiber reinforced thermoplastic resin cannot meet the requirements in many fields. The inorganic fiber reinforced resin composite material has a common disadvantage that the inorganic fiber reinforced resin composite material has a large specific gravity and is not beneficial to the use in some fields. For this reason, the polymer organic fiber reinforced thermoplastic resin composite material has recently been developed preliminarily. The organic fiber reinforced thermoplastic resin composite material has the excellent characteristics of 1, high strength 2, low density, 3, impact resistance and the like. How to exert the comprehensive advantages of the fiber reinforced composite material, avoid the disadvantages of the fiber reinforced composite material, solve more application problems and realize the characteristics of light weight, high strength, impact resistance and recyclability is urgent.
Patent 200580013818.6 is a korean patent disclosing a thermoplastic composite sheet material thereof, a method of manufacturing the same, and a technology of manufactured articles. The disclosed invention is an excellent fiber-reinforced thermoplastic sheet comprising a thermoplastic composite core comprising 40% by weight of reinforcing fibers having an average length of 1 to 30mm and 60% by weight of a thermoplastic resin comprising an inorganic filler, and a continuous reinforcing fiber-impregnated prepreg layer. The prepreg layer impregnated with the continuous reinforcing fibers is laminated on at least one of the upper and lower surfaces of the core layer, and contains 5 to 56% by weight of reinforcing fibers and 35 to 95% by weight of a thermoplastic resin containing a small amount of an inorganic filler. However, the reinforcing fiber of the patent is short fiber, is not continuous long fiber, is not woven into fiber cloth with a net structure, and does not relate to the respective characteristics and complementary action of organic fiber and inorganic fiber, so that the improvement of the performance of the composite material is limited.
The early chinese patent 201510992614.7 discloses a sandwich panel, which comprises a surface layer, a core layer and a bottom layer sequentially welded by hot pressing from top to bottom. Wherein: the surface layer and the bottom layer are both fiber reinforced thermoplastic plates of non-woven fabrics with single surfaces covered with films, and the fiber reinforced thermoplastic plates of the non-woven fabrics with single surfaces covered with films are formed by hot pressing of continuous fiber reinforced thermoplastic prepregs, short fiber reinforced thermoplastic prepreg return materials and single surface covered with non-woven fabrics. This patent emphasizes the reinforcing effect of inorganic fibers, does not describe the length and weaving mode of inorganic fibers in detail, does not relate to the reinforcement of organic fibers, does not mention the mixed use of the inorganic fibers and the organic fibers, and cannot solve the characteristics of light weight, high strength and impact resistance.
Japanese patent No. 201880041289.8 discloses a fiber-reinforced thermoplastic resin product and a fiber-reinforced thermoplastic resin molding material, the fiber-reinforced thermoplastic resin molding product containing inorganic fibers, organic fibers, and a thermoplastic resin. The invention relates to the manufacture of pellets of short fiber modified thermoplastic resin for injection molding or extrusion into articles, not to continuous fiber pressed composites, nor to the spatial distribution and combination of organic and inorganic fibers, which have far from meeting the requirements of high strength, modulus and impact resistance in combination.
Disclosure of Invention
The invention aims to overcome and supplement the defects in the prior art and provide a multi-fiber reinforced thermoplastic resin composite material, a manufacturing method and a product.
The multi-element fiber reinforced composite material comprises at least one A layer and at least one C layer; the layer A is an organic fiber reinforced thermoplastic resin composite material; the layer C is made of inorganic fiber reinforced thermoplastic resin composite materials, the layer A and the layer C are alternately paved, and the layer A is arranged outside. The layer A is arranged on the outer end face of the composite material product, and can absorb impact energy and protect the structural strength of the layer C. The layer C mainly plays a role in rigid support of the material on the inner end face of the composite material.
Further, the multi-element fiber reinforced composite material also comprises at least one B layer, wherein the B layer is an intermediate thermoplastic resin bonding layer, and the B layer is arranged between the A layer and the C layer.
Further, the structure of the multi-element fiber reinforced composite material is one of A-B-C, A-B-C-B-A, A-B-C-B-A-B-C, A-B-C-B-A-B-C-B-A.
Further, the layer A is a surface layer and is formed by pressing a plurality of layers of organic fiber reinforced thermoplastic resin; the layer B is a thermoplastic resin adhesive film; the layer C is formed by pressing a plurality of layers of inorganic fiber reinforced thermoplastic resin; the structure of the layer A is one of plate, section bar, bar and profiled bar structures; the structure of the C layer is one of plate, section bar, bar and profiled bar structures.
Further, the organic fiber structure of the layer A is woven cloth formed by continuous fibers or unidirectional continuous fiber prepreg cloth; the inorganic fiber structure of the layer C is woven cloth formed by continuous fibers or unidirectional continuous fiber prepreg cloth, and the woven cloth of the layer A and the woven cloth of the layer C are in one of plain weave, twill weave and satin weave structures.
The continuous fiber has stronger tensile strength, tensile modulus, bending strength, bending modulus and impact resistance, and the fiber has the same strength in the warp and weft directions after being woven, so that the overall performance of the composite material is improved. The unidirectional fiber prepreg cloth is laid at a certain angle, generally within the angle range of 45-90 degrees, and preferably at an included angle of 90 degrees. The folding is carried out according to a certain angle, and the mechanical property of the materials in different directions is also improved.
Further, if the a layer resin and the C layer resin are the same material, the B layer thermoplastic bonding resin may be eliminated.
Further, the organic fiber content of the layer A is 20-90%, preferably 60-85%; the inorganic fiber content of the C layer is 20-90%, preferably 60-85%.
Further, the proportion of the thickness of the a layer in the overall article is 5-95%, preferably 10% -25% or 75-90%; the thickness of the C layer is in a proportion of 5-95%, preferably 10-25% or 75-90% of the total article; the proportion of the thickness of the B layer in the overall article is 1-5%.
The layer A plays a role in impact energy absorption in the composite board product, so that the impact resistance of the whole composite material is improved. The layer C plays a role in supporting the rigidity of the composite material, and the hardness and the height of the whole composite material are improved. The higher the content of the layer A is, the more impact-resistant and energy-absorbing are, the higher the content of the layer C is, the higher the rigidity of the product is and the higher the flexural modulus of the product is. The thickness of the specific A, C layer is adjusted depending on the application of the final product.
Further, the inorganic fiber is selected from one or a combination of several of glass fiber, basalt fiber, boron fiber, ceramic fiber and metal fiber; the organic fiber Xuanzi polyester fiber, acrylic fiber, chinlon, polypropylene fiber, aramid fiber, ultra-high molecular weight polyethylene fiber, poly-p-phenylene benzobisoxazole fiber, poly-p-benzimidazole fiber, poly-p-phenylene pyridbisimidazole fiber, polyimide fiber and plant fiber are one or more of the combination.
Further, the thermoplastic resins of the layer a and the layer C may be the same or different materials, and may be selected from one or a combination of several of PE, PP, PVC, PET, PA, PU, EVA, ABS, PS, PC, PEEK, and PPs; the B layer binding resin is selected from any one of ethylene propylene copolymer, maleic anhydride graft, acrylate graft, glycidyl methacrylate graft and vinyl acetate.
The invention also protects a process for the preparation of a multi-fiber reinforced composite material according to the preceding claim, comprising the steps of:
step SS 1: preparing a C-layer composite material, and carrying out multi-layer hot pressing on inorganic fiber reinforced thermoplastic resin woven cloth or continuous inorganic fiber unidirectional reinforced thermoplastic resin prepreg cloth according to a certain design angle, wherein the general angle is 45-90 degrees, and the optimal angle is 90 degrees to prepare a prefabricated structural part C. The hot pressing temperature is different according to the types of the thermoplastic resin, the temperature range is between 100 ℃ and 350 ℃, and the hot pressing time is 2-5 minutes. The hot pressing temperature is within the hot melting range of the thermoplastic resin, the thermoplastic resin cannot be melted when the temperature is too low, the infiltration and the cladding of the fiber cannot be realized, and the thermoplastic resin is aged and degraded when the temperature is too high. The hot pressing time is fully considered in the plasticizing time and the soaking time of the resin.
Step SS 2: and then preparing a layer A composite material, and carrying out multilayer hot pressing on organic fiber reinforced thermoplastic resin woven cloth or continuous organic fiber unidirectional reinforced thermoplastic resin prepreg cloth according to a certain design angle, wherein the general angle is 45-90 degrees, and the optimal angle is 90 degrees to prepare a prefabricated structural part A. The hot pressing temperature is different according to the types of the thermoplastic resin, the temperature range is between 100 ℃ and 350 ℃, and the hot pressing time is 2-5 minutes. The hot pressing temperature is within the hot melting range of the thermoplastic resin, the thermoplastic resin cannot be melted when the temperature is too low, the infiltration and the cladding of the fiber cannot be realized, and the thermoplastic resin is aged and degraded when the temperature is too high. The hot pressing time is fully considered in the plasticizing time and the soaking time of the resin.
Step SS 3: and then carrying out hot-pressing composite molding on the prefabricated structural part A, the bonding layer B and the prefabricated structural part C to obtain the multi-element fiber reinforced thermoplastic composite material. The hot pressing temperature is different according to the types of the thermoplastic resin, the temperature range is between 100 ℃ and 350 ℃, and the hot pressing time is 2-5 minutes.
Further, for thinner multi-fiber reinforced thermoplastic composites, one-time hot-press compounding according to the structure of A-B-C is also possible.
In the multi-element fiber reinforced thermoplastic resin composite material, the organic fiber reinforced thermoplastic resin composite material of the layer A plays roles in light weight, impact resistance, high strength and low temperature resistance, can well protect the middle layer, absorbs surface impact energy and resists low-temperature embrittlement. The C-layer inorganic fiber reinforced thermoplastic resin composite material has the functions of high strength, high rigidity and high modulus, and can also play a good role in strength support and stability. The layer B can tightly connect the layer A and the layer C together to form a whole.
The multicomponent composite material according to the invention has at least the following technical effects:
1. the thermoplastic resin reinforced composite material can realize simple processing, high efficiency improvement and secondary forming processing;
2. the inorganic fiber reinforced thermoplastic resin material can play a role in supporting a framework, and realizes high strength, high modulus, high rigidity and creep resistance;
3. the organic fiber reinforced thermoplastic resin material has the characteristics of high strength, impact resistance, low temperature resistance and corrosion resistance;
4. due to the adoption of the thermoplastic resin, the recovery and the utilization of the composite material can be realized;
5. the multi-element composite material disclosed by the invention realizes the combination of rigidity and flexibility, and the application field and the use value of the multi-element composite material are greatly expanded.
Drawings
FIG. 1 shows an A-C structure
FIG. 2 shows an A-B-C structure
FIG. 3 shows an A-B-C-B-A structure
FIG. 4 shows an A-B-C-B-A-B-C structure
FIG. 5 shows an A-B-C-B-A-B-C-B-A structure
Detailed Description
The present invention will be further described with reference to the following specific examples.
The multi-fiber reinforced thermoplastic resin composite material and the method of manufacturing the same according to the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In order to better understand the technical solution of the present invention, the following description is given with reference to a specific example, wherein the listed details are mainly for the convenience of understanding and are not to be taken as a limitation on the protection scope of the present invention. The composite material realizes the characteristics of light weight, high strength, high modulus, impact resistance and easy recovery. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The first embodiment,
Firstly, preparing a C-layer inorganic fiber reinforced thermoplastic resin layer, wherein the inorganic fiber is glass fiber, the woven cloth is in a twill state, and the thermoplastic resin is polypropylene. Stacking the glass fiber cloth and the PP resin film layer by layer, stacking the glass fiber cloth into five layers, carrying out hot pressing for 3 minutes at the hot pressing temperature of 165 ℃, then carrying out cooling and pressure maintaining at the cooling temperature of 40 ℃ for 5 minutes, and obtaining the C-layer plate. And then preparing an A layer of organic fiber reinforced thermoplastic resin layer, wherein the organic fiber is polypropylene, the woven cloth is in a twill state, and the thermoplastic resin is polypropylene. And (3) layering and stacking the polypropylene fiber cloth and the PP resin film, wherein the polypropylene fiber is in two layers, the hot pressing temperature is 150 ℃, the hot pressing is carried out for 3 minutes, then, the pressure maintaining and cooling are carried out, the cooling temperature is 40 ℃, and the cooling time is 5 minutes, so that the A-layer plate is prepared. Since the PP resin is selected for both the a and C layers in this example, no tie layer may be used. Stacking the prepared layer A and the layer C, pressing in a flat press at the pressing temperature of 150 ℃ for 3 minutes, cooling and maintaining the pressure at the pressure maintaining temperature of 50 ℃ for 5 minutes to obtain the final composite board as shown in figure 1.
Comparative example one:
the difference between the first comparative example and the first example is that the materials of the layer C and the layer A in the first comparative example are the same, and the layers are both inorganic fiber reinforced thermoplastic resin layers, the inorganic fibers are glass fibers, the woven cloth is in a twill state, and the thermoplastic resin is polypropylene. The other parameters are the same as those in the first embodiment.
Comparative example two:
the difference between the second comparative example and the first example is that the materials of the layer C and the layer A in the second comparative example are the same, the layers are all organic fiber reinforced thermoplastic resin layers, the organic fibers are polypropylene fibers, the woven cloth is in a twill state, and the thermoplastic resin is polypropylene. The other parameters are the same as those in the first embodiment.
Comparative example three:
the difference between the third comparative example and the first example is that the material of the layer C and the layer A in the third comparative example are the same and are both inorganic fiber reinforced thermoplastic resin layers, and the inorganic fiber in the third comparative example is 30% glass short fiber reinforced PP.
Example II,
Firstly, preparing a C-layer inorganic fiber reinforced thermoplastic resin layer, wherein the inorganic fiber is a carbon fiber reinforced PA6 prepreg sheet. Stacking the carbon fiber unidirectional reinforced PA6 prepreg sheets in a layering mode according to an included angle of 90 degrees, stacking the carbon fiber unidirectional reinforced PA6 prepreg sheets into five layers, carrying out hot pressing for 3 minutes at the hot pressing temperature of 250 ℃, then carrying out cooling and pressure maintaining at the cooling temperature of 50 ℃ for 5 minutes, and obtaining the C-layer plate. And then preparing an A layer of organic fiber reinforced thermoplastic resin layer, wherein the organic fiber is chinlon, the woven cloth is in a twill state, and the thermoplastic resin is modified polypropylene. And (2) layering and stacking nylon fiber cloth and a modified PP resin film, wherein the nylon fiber is in two layers, the hot pressing temperature is 220 ℃, the hot pressing is carried out for 3 minutes, then, the pressure maintaining and cooling are carried out, the cooling temperature is 50 ℃, and the cooling time is 5 minutes, so that the A-layer plate is prepared. In the embodiment, an acrylate grafted resin film is used as the bonding layer B, the prepared layer A, the prepared layer B and the prepared layer C are stacked according to A-B-C, and are pressed in a flat press at the pressing temperature of 225 ℃ for 3 minutes, and then are cooled and maintained at the pressure maintaining temperature of 50 ℃ for 5 minutes to prepare the final composite board as shown in figure 2:
comparative example four:
the difference between the comparative example four and the example two is that the layer A of the thermoplastic resin reinforced by organic fibers in the example two is the same as the layer A and the layer C in the comparative example four are both carbon fiber unidirectional reinforced PA 6.
Comparative example five:
the difference between the fifth comparative example and the second example is that the materials of the layer C and the layer A in the fifth comparative example are the same, and both are inorganic fiber reinforced thermoplastic resin layers, and the composition is 40% of carbon fiber short fiber reinforced PA 6.
TABLE 1
By comparing the data in Table 1, the specific gravity of the product is reduced by 12% and the impact strength is improved by 35.8% in comparison with comparative example 1, the tensile strength of the product is increased by 88.7% in comparison with comparative example 1 and comparative example 2, the bending strength is increased by 324%, the tensile strength is improved by 253.8% in comparison with comparative example 1 and comparative example 3, the bending strength is improved by 92.7%, the impact strength is improved by 1800%, and the specific gravity is increased by only 13.4%. In this example 2 and comparative example 2, the tensile strength was increased by 600% and the flexural strength was increased by 1200%. In this example 2, the specific gravity of the product was reduced by 7.4% and the impact strength was improved by 50% as compared with comparative example 4. In this example 2, the specific gravity was reduced by 5.6%, the tensile strength was increased by 346.8%, the flexural strength was increased by 346.8%, and the impact strength was increased by 3328.5% as compared with comparative example 5.
In conclusion, the inorganic fiber reinforced thermoplastic resin material can play a role in supporting a framework, and realizes high strength, high modulus, high rigidity and creep resistance; the organic fiber reinforced thermoplastic resin material has the characteristics of high strength, impact resistance, low temperature resistance and corrosion resistance; the multi-element composite material disclosed by the invention realizes the combination of rigidity and flexibility, and the application field and the use value of the multi-element composite material are greatly expanded.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A multi-fiber reinforced composite characterized by: comprises at least one A layer and at least one C layer; the layer A is an organic fiber reinforced thermoplastic resin composite material; the layer C is made of inorganic fiber reinforced thermoplastic resin composite materials, the layer A and the layer C are alternately paved, and the layer A is arranged outside.
2. The multi-fiber reinforced composite of claim 1, wherein: the multi-element fiber reinforced composite material also comprises at least one B layer, wherein the B layer is an intermediate thermoplastic resin bonding layer, and the B layer is arranged between the A layer and the C layer.
3. The multi-fiber reinforced composite of claim 2, wherein: the layer A is a surface layer and is formed by pressing a plurality of layers of organic fiber reinforced thermoplastic resin; the layer B is a thermoplastic resin adhesive film; the layer C is formed by pressing multiple layers of inorganic fiber reinforced thermoplastic resin.
4. The multi-fiber reinforced composite of claim 3, wherein: the organic fiber structure of the layer A is woven cloth which is a net structure and is woven by continuous flat filament-shaped and strand-shaped long fibers; the inorganic fiber structure of the layer C is woven cloth which is a net structure woven by continuous filament bundle-shaped long fibers, and the woven cloth of the layer A and the woven cloth of the layer C are in one of plain weave, twill weave and satin weave structures.
5. The multi-fiber reinforced composite of claim 4, wherein: the B layer thermoplastic bonding resin may be eliminated if the a layer resin and the C layer resin are the same material.
6. The multi-fiber reinforced composite of claim 2, wherein: the organic fiber content of the layer A is 20-90%, preferably 60-85%; the inorganic fiber content of the C layer is 20-90%, preferably 60-85%.
7. The multi-fiber reinforced composite of claim 2, wherein: the proportion of the thickness of the layer a in the overall article is from 5 to 95%, preferably from 10% to 25% or from 75 to 90%; the thickness of the C layer is in a proportion of 5-95%, preferably 10-25% or 75-90% of the total article; the proportion of the thickness of the B layer in the overall article is 1-5%.
8. The multi-fiber reinforced composite of claim 2, wherein: the inorganic fiber is selected from one or a combination of several of glass fiber, basalt fiber, boron fiber, ceramic fiber and metal fiber; the organic fiber Xuanzi polyester fiber, acrylic fiber, chinlon, polypropylene fiber, aramid fiber, ultra-high molecular weight polyethylene fiber, poly-p-phenylene benzobisoxazole fiber, poly-p-benzimidazole fiber, poly-p-phenylene pyridbisimidazole fiber, polyimide fiber and plant fiber are one or more of the combination.
9. The multi-fiber reinforced composite of claim 2, wherein: the thermoplastic resins of the layer A and the layer C can be the same or different materials, and can be selected from one or a combination of more of PE, PP, PVC, PET, PA, PU, EVA, ABS, PS, PC, PEEK and PPS; the B layer binding resin is selected from any one of ethylene propylene copolymer, maleic anhydride graft, acrylate graft, glycidyl methacrylate graft and vinyl acetate.
10. A method of producing a multi-fibre reinforced composite material according to any one of claims 1 to 9, characterised in that it comprises the steps of:
step SS 1: preparing a C-layer composite material, and carrying out multi-layer hot pressing on inorganic fiber reinforced thermoplastic resin woven cloth or continuous inorganic fiber unidirectional reinforced thermoplastic resin prepreg cloth according to a certain design angle to prepare a prefabricated structural part C.
Step SS 2: preparing a layer A composite material, and carrying out multi-layer hot pressing on organic fiber reinforced thermoplastic resin woven cloth or continuous organic fiber unidirectional reinforced thermoplastic resin prepreg cloth according to a certain design angle to prepare a prefabricated structural part A.
Step SS 3: and then the prefabricated structural part A, the bonding layer B and the prefabricated structural part C are subjected to hot-pressing composite molding to prepare the multi-element fiber reinforced thermoplastic composite material.
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| CN114603953A (en) * | 2022-02-11 | 2022-06-10 | 安徽农业大学 | Bamboo fiber woven filling material and preparation method thereof |
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