CN115076472B - Single polymer composite pipe - Google Patents

Single polymer composite pipe Download PDF

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Publication number
CN115076472B
CN115076472B CN202210592763.4A CN202210592763A CN115076472B CN 115076472 B CN115076472 B CN 115076472B CN 202210592763 A CN202210592763 A CN 202210592763A CN 115076472 B CN115076472 B CN 115076472B
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polymer composite
single polymer
fiber
tube
polypropylene
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CN115076472A (en
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王建
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Beijing University of Chemical Technology
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Beijing University of Chemical Technology
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/02—Hoses, i.e. flexible pipes made of fibres or threads, e.g. of textile which may or may not be impregnated, or provided with an impermeable layer, e.g. fire-hoses
    • 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
    • B32B1/00—Layered products having a general shape other than plane
    • B32B1/08—Tubular products
    • 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
    • B32B27/08—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 of synthetic resin
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/24—Hoses, i.e. flexible pipes wound from strips or bands
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B32B2250/242—All polymers belonging to those covered by group B32B27/32
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • 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
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment

Abstract

The invention relates to a single polymer composite material pipe which consists of cross-wound single polymer composite material fiber filaments/strips, wherein the single polymer composite material fiber filaments/strips are formed into a tubular integral structure by cross winding and seamless welding, the single polymer composite material fiber filaments/strips comprise continuous polymer fiber reinforcement bodies and polymer matrixes, the continuous polymer fiber reinforcement bodies and the polymer matrixes are from the same polymer material, and the continuous polymer fiber filaments are tightly and uniformly distributed in the middle of the polymer matrixes. The single polymer composite material pipe has the advantages of low cost, light weight, good interface cohesiveness, high strength and easy recovery; compared with the traditional composite material with different materials of the matrix and the reinforcement, the composite material can further obtain outstanding impact resistance; the matrix and reinforcement have the same coefficient of thermal expansion and thus can be adapted for a wider range of temperature variations.

Description

Single polymer composite pipe
Technical Field
The invention relates to a single polymer composite material pipe, and belongs to the field of polymer composite material products.
Background
With the development of continuous fiber reinforced thermoplastic polymer composites, the application field extends from the aerospace and automotive fields to the petroleum and natural gas pipeline industries. The continuous fiber reinforced thermoplastic polymer composite material mainly comprises a continuous fiber reinforcement and a polymer matrix, wherein glass fibers and carbon fibers are reinforcement materials which are most widely used at present, and the matrix material is a thermoplastic polymer. Compared with the thermosetting polymer composite material, the thermoplastic polymer has the advantages of good toughness, low cost and recycling, but the viscosity is generally higher than that of the thermosetting polymer, so that the processing and forming difficulties are greater. In particular, the technical difficulty in molding a continuous fiber reinforced thermoplastic polymer composite tube is great, unlike conventional continuous fiber reinforced thermoset polymer composite tube molding techniques.
Continuous fiber reinforced thermoplastic polymer composite tubes are typically composed of an inner liner layer, a reinforcing core layer, and an outer protective layer. The inner liner layer and the outer protective layer are made of thermoplastic polymer matrixes, the inner liner layer plays roles of medium diversion, corrosion resistance and internal stress conduction, and the outer protective layer plays roles of protecting and enhancing the core layer and external stress conduction; the reinforced core layer is formed by a plurality of layers of staggered winding continuous fiber reinforcements and thermoplastic polymer matrix materials, wherein the continuous fiber materials comprise aramid fibers, polyester fibers, glass fibers, carbon fibers and metal fibers (copper wires and steel wires), and the reinforced core layer plays roles in bearing main stress, temperature and creep resistance of the pipe body. The continuous fiber reinforced thermoplastic polymer composite material pipeline has the advantages of corrosion resistance, high pressure resistance, temperature resistance, heat preservation, strong conveying capacity (smooth inner wall, small flow resistance, abrasion resistance, difficult scaling), good flexibility, flexibility (impact resistance, shock resistance, no need of a thermal compensation device), convenient construction, few joints, high cost performance, long service life and the like, is mainly used in the fields of petroleum, natural gas, high-pressure water and special fluid conveying, and is a novel corrosion-resistant, pressure-resistant and temperature-resistant reinforced pipe for replacing conventional metal pipes and plastic pipes. Therefore, the technology for producing the continuous fiber reinforced thermoplastic polymer composite material pipe is researched by the countries such as Europe and America, germany, law, english, daily, russia and the like as early as 70, the technology is already in an industrial production stage, the production research in China is in a starting stage, and the related product production technology needs to be upgraded.
The continuous fiber reinforced thermoplastic polymer composite material pipe is characterized in that the base body and the reinforcement body are different, particularly when the base body and the reinforcement body are made of materials with larger difference in physical properties (such as thermoplastic polymers are adopted as the base body, glass fibers, carbon fibers and metal fibers are adopted as the reinforcement body), the pipe after normal-temperature molding cannot adapt to a wider use temperature range (-42 ℃ to 102 ℃) due to larger difference in heat conductivity coefficients of the base body and the reinforcement body. In particular, the adaptability to low temperature conditions is poor. Under the temperature changing condition, the interface between the fiber reinforcement and the matrix of the glass fiber, carbon fiber and metal fiber reinforced thermoplastic composite material pipeline can be contracted or expanded differently due to the difference of heat conductivity coefficients, so that the mechanical performance is deteriorated, and the pipeline is invalid and the service life is reduced.
Taking a pipeline for developing and conveying Floating Liquefied Natural Gas (FLNG) by using offshore natural gas as an example, the conveying process is about 20 hours, the ultralow temperature of-162 ℃ is required to be maintained, and the material of a conveying pipe is required to bear the ultralow temperature; the pipe is not influenced by the temperature of the seawater for a long time, and the constant ultralow temperature is maintained. In addition, the transfer pipe needs to overcome the influence of the relative motion of the FLNG production storage and offloading device and the shuttle tanker. At present, no high-end product exists in China. The FLNG production storage and discharge device export and discharge technology is monopolized by a small number of foreign companies, a 16-20 inch caliber low-temperature pipe system is developed, and a single low-temperature pipe system is provided with hundreds of millions of dollars. The low-temperature-resistant pipe system for conveying the liquefied natural gas is a key technology for offshore gas field development, the offshore gas field development is difficult to realize by a traditional pipeline landing mode, and the economic exploitation cannot be realized due to the excessive cost.
In 9 2019, magma signed a collaborative development project with shell, namely, development of a single polymer composite flexible cryotube suitable for-196 ℃ low-temperature application and a high-end manufacturing technology thereof, and pushed the cryotube system to a new height. The single polymer composite material is a composite material with fiber reinforcement and matrix from the same polymer, and has the advantages of small density, light weight, low cost, easy recovery, good interfacial adhesion, excellent mechanical properties (especially impact resistance), good creep resistance (especially low-temperature creep), excellent acoustic damping characteristics, easy coating/plating and the like. At present, the base materials of the developed single polymer composite materials mainly comprise polypropylene, polyethylene terephthalate, polyamide, polylactic acid, polyether ether ketone and the like, and the single polymer composite material products developed abroad are applied to the fields of automobiles, cases, sports and the like. The single polymer composite is directly associated with the formation of the article because the reinforcement and the matrix are derived from the same polymer and have the same or similar melting temperatures (melting points), and thus expanding the processing temperature window, i.e., expanding the difference in melting temperature between the reinforcement and the matrix, is critical for the preparation of the single polymer composite. Currently, related breakthrough technology is mainly developed based on the structure and physical properties of polymer raw materials. The China still lacks key technologies and equipment related to the preparation of related materials and the formation of structures, and some formed related technologies still stay in a laboratory small-scale stage.
Further, the single polymer composite material is formed into a single polymer composite material pipe, and the characteristic that the thermal expansion coefficients of the reinforcement body and the matrix are consistent can be utilized, so that the corresponding mechanical strength can be maintained in a wide temperature range of high and low temperatures. Particularly for polypropylene single polymer composite materials, because the polypropylene raw material has low cost, the polypropylene single polymer composite material has great economic benefit if the polypropylene single polymer composite material can replace the fiber reinforced thermoplastic composite material pipe with the complex structure of the existing various materials. Development of single polymer composite material pipes and molding technology and equipment thereof are developed as soon as possible in China, and development of the technical field of FLNG pipes is hopeful to be followed.
The invention respectively utilizes a patent retrieval system (website http:// www.cnipa.gov.cn) of a national intellectual property office network and an Elsevier of a foreign journal database to carry out detailed and comprehensive retrieval as far as possible, obtains and refers to the following prior art, introduces the prior art, and compares the prior art with the technical proposal of the application so as to better understand the inventive concept of the invention and show the technical advantages and the technical characteristics of the invention.
Prior art 1: patent CN101334122B discloses a hose body for a hose for transporting production fluids at a subsea location, comprising a pressure jacket and a wound tape facing layer of synthetic material and an outer jacket over at least one facing layer. However, this patent does not consider the kind of material and the winding method, and the structure is complicated.
Prior art 2: patent CN104421536B discloses a pressure pipe formed by thermal state winding of a composite winding belt, wherein continuous row holes are perforated in advance on a fiber belt of the composite winding belt, polyethylene and polypropylene are further adopted as matrix materials, glass fiber, fine steel wire, aramid fiber or PBT are adopted as fiber reinforcement materials, and an alternate staggered'm' -shaped structure is also defined. However, this patent does not take into account the critical issues of thermal expansion and contraction differences between the matrix and reinforcement, and is not adaptable to a wide range of temperature changing environments.
Prior art 3: patent CN105163931B and prior art 4: patent CN105142883B discloses a method of manufacturing a flexible pipe body in succession, providing two or more filaments of composite material as tows, each filament comprising a composite matrix material and reinforcing fibres, which are cured after braiding. However, both of these patents achieve bonding primarily through the uncured matrix material, but it is difficult to keep the uncured material from curing in advance during the molding process.
Prior art 5: WO9507428 discloses a thermoplastic composite tube comprising an inner liner layer and a continuous fibre reinforced thermoplastic composite layer formed by hot melt. Prior art 6: US20200318761A1 discloses a high pressure hose with a pultruded element and a method for manufacturing the same, comprising an inner liner and a reinforcement layer containing the pultruded element, which in particular defines the matrix material as a polymer, the reinforcement material comprising a resin material impregnated with a different material than the matrix material. Prior art 7: US20080145579A1 discloses a tubular composite structure comprising a helically wound fibre cloth layer and a facing layer made of rubber. Prior art 8: JPH0911355a discloses a process for the manufacture of a fiber reinforced thermoplastic resin composite tube; prior art 9: CA1032460A discloses a method for manufacturing a fiber reinforced plastic pipe; prior art 10: CA2433914A1 discloses a high pressure flexible catheter; prior art 11: CN1324295a discloses a rotating hollow body and a method of manufacture; prior art 12: CN101570063a discloses a winding forming method of polyaryletherketone or polyarylethersulfone resin matrix composite material containing phenolphthalein lateral group; prior art 13: CN102205633a discloses a heating method and device for two-step winding molding of continuous fiber reinforced thermoplastic polymer composite material; prior art 14: CN103707496a discloses a pipe formed by winding thermoplastic fibers and a forming process thereof; prior art 15: CN103802325a discloses a thermoplastic fiber wound tubing apparatus and its application; prior art 16: CN108064326a discloses the use of a layer of material as a thermal insulation barrier; prior art 17: CN109209671a discloses a continuous fiber mesh for reinforcing polymer composites; prior art 18: CN109789687a discloses a method of manufacturing a flexible pipe layer by intermingling polymer filaments and carbon fiber filaments to form an intimate mixture, forming yarns of the intermingled filaments, forming the yarns into a tape, and applying the tape to a pipe body to form the flexible pipe layer; prior art 19: DE10229073C1 discloses a reinforced tubular mandrel for use in said continuous production; prior art 20: DE69028519T2 discloses an ultra high molecular weight polymer composite; prior art 21: US5039368A discloses a thermoplastic matrix fiber winding head; prior art 22: US2002054968A1 discloses a method of manufacturing a reinforced thermoplastic tube; prior art 23: US2007062595A1 discloses a plastic tube, such as a high density polyethylene plastic tube, useful for dispensing natural gas, having improved impact resistance and burst strength, the plastic tube having an inner surface and an outer surface, the inner surface defining a passageway for conveying natural gas or the like; prior art 24: US2015246463A1 discloses a method and apparatus for manufacturing a fiber reinforced polymer composition; none of the above patents, however, take into account the differential nature of the continuous fiber material and the matrix material, as well as the differential thermal expansion and contraction.
Prior art 25: US2013123430A1 discloses a quasi-melting process for a single polymer composite and its articles; prior art 26: the research progress of single polymer composite material preparation Zhao Zenghua and Chen Jinna introduce biodegradable high polymer materials and classifications thereof, review the problems existing in the research progress and preparation process of the preparation of different single polymer composite materials such as polyethylene, polypropylene, polyamide, polyester and the like, and point out the core problems and directions of the research of the preparation method of the high-performance single polymer composite material. However, these two prior art techniques merely describe the state of the art of single polymer composite production, and do not mention single polymer composite tubes nor do they mention the possibility of taking into account the use of the above materials in lng transfer.
Prior art 26: the applicant knows that a pipeline formed by rolling a single polymer composite material plate exists at present in academic communication at home and abroad. In this prior art report, the single polymer composite is first formed into a sheet, then the sheet is rolled to form a cylindrical structure, and a sealed cylindrical structure is formed at the junction of the cylindrical sheets by welding, but this production method is too low in production efficiency, and the pipe length cannot be too long, typically about 1m, because the sheet length of the single polymer composite is typically about 1m, and the junction of the cylindrical sheets is joined together by subsequent melt processing, which still causes the cylindrical structure to have welding lines, thereby causing potential stress concentration and easy failure.
Prior art 27: the application number is CN201210057668.0 (relevant website addresses are http:// www.gov.cn/xinwen/2019-12/13/content_5460877.Htm; https:// baijiahao. Baidu. Com/sild=1652827309005455544 & wfr=spider & for=pc). Wherein the relevant effects and roles of the relevant experimental data are explained, the present invention refers to the same as an analogical explanation of the technical effects of the present invention.
From the above description of the prior art, those skilled in the art will appreciate that the composite material pipes currently available use several modifications such as:
(1) Directly adopting the production process of extruding the pipe by a traditional extruder, and enhancing the strength of the pipe by increasing the number of layers;
(2) Winding reinforcing fibers which are different from the matrix material, and then performing fusion forming to form a pipeline (such as a prior art CN 101570063A);
(3) In the production process of extruding pipes by a traditional extruder, reinforcing the pipes by adding composite fiber yarns/strips;
(4) The single polymer composite material is firstly made into a plate, and then the plate is rolled and welded to form the pipeline.
As can be seen from the description of the prior art, all the prior art currently has the following characteristics in the preparation of pipes:
(1) The production process of extruding the pipe by directly adopting the traditional extruder is adopted, the strength of the pipe is enhanced by increasing the number of layers, and the preparation mode can increase the strength of the pipe to a certain extent, but still has the failure defects of layering and the like;
(2) Winding reinforcing fibers which are different from the matrix material, and then performing fusion forming to form a pipeline, wherein the mode does not consider the problems of different quality and thermal expansion and contraction difference of the continuous fiber material and the matrix material, and delamination and failure are easy to cause; at the same time, the bonding is mainly realized through the uncured matrix material, but it is difficult to keep the uncured material from being cured in advance in the molding process;
(3) In the production process of the pipe extruded by the traditional extruder, the pipe is reinforced by adding the composite material fiber yarn/belt, the mode also does not consider the problems of different quality and thermal expansion and contraction difference of the continuous fiber material and the matrix material, and delamination and failure are also easy to cause;
(4) Firstly, a single polymer composite material is made into a plate, and then the plate is rolled and welded to form a pipeline, the mode is mainly focused on research experiments in a laboratory at present, the production efficiency is low, the length of the pipeline cannot be too long, and the joint of the cylindrical plates is jointed together through subsequent melt processing, so that the cylindrical structure still has welding lines, thereby causing potential stress concentration and easy failure;
(5) Two or more filaments of composite material are used as tows, each filament comprising a composite matrix material and reinforcing fibers, and are consolidated by braiding. This approach achieves bonding primarily through the uncured matrix material, but it is difficult to keep the uncured material from curing in advance during the molding process.
From the disclosure of the prior art, the prior art focuses on the technology of reinforcing pipes by increasing the number of layers in the traditional pipe extrusion process, manufacturing pipes by different matrix composite fibers, or manufacturing pipes in small scale by rolling and welding, but the person skilled in the art fails to notice the possibility of large scale pipe production by single polymer composite, that is, the prior art explained above, although the equipment and the various methods for producing pipes are various and abnormally mature, the concept of large scale production by single polymer fiber yarn/tape through winding, braiding and melt curing production modes is not disclosed in the prior art, and the production mode not only effectively solves the problem of delamination failure among different matrix materials, but also effectively improves various performances of the pipes, simultaneously realizes large scale production and solves the problem of 'neck clamping' of natural gas transportation. The technical effect of the present invention, according to the prior art wholly obtained by the applicant at present, is that the above prior art cannot be obtained simply directly or by combination, with an incomparable potential industrial value.
Disclosure of Invention
Aiming at the problems that the matrix and the reinforcement of the existing continuous fiber reinforced thermoplastic polymer composite material pipe are made of different materials and have larger heat conductivity coefficients and cannot adapt to larger temperature changing environment conditions, the invention aims to provide the single polymer composite material pipe which has the advantages of small density, light weight, low cost, good interfacial adhesion, good impact resistance, large applicable temperature changing range and high recycling rate.
The aim of the invention is achieved by the following technical scheme.
A single polymer composite tube comprising an n-layer tubular structure, wherein n is greater than or equal to 1; the method is characterized in that: each layer of the tubular structure comprises m sub-layers of single polymer composite fiber filaments/bands, wherein m is more than or equal to 1; the single polymer composite filaments/tapes are laminated together by cross winding or cross braiding; wherein each of the m sublayers is seamlessly welded between filaments/ribbons of single polymer composite material, and each of the n-layer tubular structures is seamlessly welded between the layers; the values of n and m are respectively arranged and combined, the cross winding direction is spiral left-handed or spiral right-handed, the cross winding direction of adjacent sublayers is same or different, and each sublayer single polymer composite material in the m sublayers is selected as a single polymer composite material fiber yarn or a single polymer composite material fiber band; and when n=1 and m=1, the single polymer composite tube contains only one sub-layer of single polymer composite filaments/tapes, at which time the single polymer composite filaments/tapes are seamlessly welded.
Further, the single polymer composite material pipe further comprises an inner liner layer, wherein the inner liner layer is located at the innermost side of the n-layer tubular structure, and the inner liner layer is in seamless welding with the adjacent tubular structure or is sleeved on the outer side of the inner liner layer.
Further, the single polymer composite material pipe further comprises an outer protective layer, wherein the outer protective layer is located at the outermost side of the n-layer tubular structure, and the outer protective layer is in seamless welding with the adjacent tubular structure or sleeved at the outer side of the n-layer tubular structure.
Further, the single polymer composite filament/tape comprises a continuous polymer filament reinforcement and a polymer matrix from the same polymer material, the continuous polymer filament being intimately and evenly distributed in the middle of the polymer matrix.
Further, the pore content of the pipe wall of the single polymer composite pipe is 0-20%. The pore content of the pipe wall is preferably less than or equal to 5 percent, the pore content of the pipe wall is more preferably less than or equal to 10 percent, the pore content of the pipe wall is more preferably less than or equal to 15 percent, the pore content of the pipe wall is more preferably less than or equal to 20 percent, and the pore content of the pipe wall is more preferably more than 20 percent, so that the pipe wall is difficult to use.
Further, when the single polymer composite tube has an inner liner layer, the inner liner layer is made of the same material as the polymer matrix material.
Further, when the single polymer composite tube has an outer protective layer, the outer protective layer is made of the same material as the polymer matrix material.
Further, the material of the continuous polymer fiber reinforcement and the polymer matrix is selected from any of homo-polypropylene, co-polypropylene, low density polyethylene, high density polyethylene, ultra-high molecular weight polyethylene, linear low density polyethylene, polyamide 6, polyamide 66, polyethylene terephthalate, polyethylene naphthalate, polylactic acid, polyetheretherketone, polybutylene terephthalate, wherein the co-polypropylene comprises polypropylene block copolymer and polypropylene random copolymer.
Further, the single polymer composite filaments/ribbons comprise 2 or more continuous polymer filaments/ribbons.
Further, the single polymer composite filament/tape is a double/multicomponent single polymer composite filament/tape, each component material belongs to the same polymer of the same chemical formula, and the melting point of one component is lower than the melting point of the other component.
Further, the content of the continuous polymer fiber reinforcement is more than or equal to 50 percent.
Further, the material of the continuous polymer fiber reinforcement is homo-polypropylene, and the material of the polymer matrix is co-polypropylene.
A tube of single polymer composite material consisting of cross-wound single polymer composite material filaments/ribbons characterized by: the single polymer composite fiber yarn/belt is wound in a crossed and seamless way to form a tubular integral structure, the single polymer composite fiber yarn/belt comprises a continuous polymer fiber yarn reinforcement body and a polymer matrix, the continuous polymer fiber yarn reinforcement body and the polymer matrix are from the same polymer material, and the continuous polymer fiber yarn is tightly and uniformly distributed in the middle of the polymer matrix.
Further, the single polymer composite tube is characterized in that: the material of the continuous polymer fiber reinforcement and the polymer matrix is selected from any of the same chemical formula polymers selected from the group consisting of homo-polypropylene, co-polypropylene, low density polyethylene, high density polyethylene, ultra high molecular weight polyethylene, linear low density polyethylene, polyamide 6, polyamide 66, polyethylene terephthalate, polyethylene naphthalate, polylactic acid, polyetheretherketone, polybutylene terephthalate, wherein the co-polypropylene comprises polypropylene block copolymers and polypropylene random copolymers.
Further, the single polymer composite tube is characterized in that: the tubular structure is formed by stacking and combining a plurality of layers of single polymer composite material fiber yarns/strips in a cross-woven manner, wherein each layer of single polymer composite material fiber yarns/strips are in a cross-woven structure, and the single polymer composite material fiber yarns/strips and the layers are in seamless welding connection to form the tubular integral structure.
Further, the single polymer composite tube is characterized in that: the single polymer composite fiber structure is formed by laminating and combining even-number layers of single polymer composite fiber yarns/strips in a spiral winding manner, wherein the spiral winding direction of the single polymer composite fiber yarns/strips in one layer is right-handed, the spiral winding direction of the single polymer composite fiber yarns/strips in the adjacent layer is left-handed, and the single polymer composite fiber yarns/strips and the layers are welded together seamlessly to form a tubular integral structure.
Further, the single polymer composite tube is characterized in that: the inner liner layer and the outer protective layer are respectively positioned at the innermost side and the outermost side of the cross-wound single polymer composite fiber/ribbon tubular structure, and the inner liner layer and the outer protective layer are made of the same material as the polymer matrix material.
Further, the single polymer composite tube is characterized in that: the single polymer composite filaments/tapes are assembled from a plurality of smaller size continuous polymer filaments/tapes.
Further, the single polymer composite tube is characterized in that: the single polymer composite material filament/belt is a double/multi-component single polymer composite material filament/belt, and each component material belongs to the same polymer with the same chemical formula, wherein the melting point of one component is lower than that of the other components.
Further, the single polymer composite tube is characterized in that: the material of the continuous polymer fiber reinforcement is homo-polypropylene, and the material of the polymer matrix is co-polypropylene.
Further, the single polymer composite tube is characterized in that: the content of the continuous polymer fiber reinforcement is not less than 50%.
Advantageous effects
The invention has the following advantages and effects:
1. the single polymer composite material pipe has the advantages of corrosion resistance, wear resistance, pressure resistance, temperature resistance, heat preservation, strong conveying capacity, good flexibility, flexibility (impact resistance, shock resistance, no need of a thermal compensation device), convenient construction, few joints, high cost performance, long service life and the like, can be used in the fields of petroleum, natural gas, high-pressure water and special fluid conveying, and is a novel corrosion-resistant, pressure-resistant and temperature-resistant reinforced pipe for replacing conventional metal pipes and plastic pipes;
2. The single polymer composite material pipe adopts the polymer materials with the same matrix and reinforcement, and has the advantages of low cost, light weight, good interface cohesiveness, high strength and easy recovery;
3. the matrix and the reinforcement of the single polymer composite material pipe are from the same polymer material, the melting temperatures of the matrix and the reinforcement are similar, the single polymer composite material wire/belt hot melt bonding can be ensured through a hot melt device, the interfacial adhesion is superior to that of the traditional composite material with the matrix and the reinforcement being of different materials, and the outstanding impact resistance can be further obtained;
4. the matrix and the reinforcement of the single polymer composite material pipe are from the same polymer material, and the thermodynamic coefficients such as the heat conduction coefficient, the specific heat capacity, the thermal expansion coefficient and the contraction coefficient are the same or similar, so that the single polymer composite material pipe has an excellent temperature application range; under the condition of great temperature change, the thermal deformation of the matrix and the reinforcement body inside the pipe can be kept consistent, and further, the pipe can keep excellent mechanical properties under the high-temperature and low-temperature environments; compared with the traditional composite material pipe with different materials of the matrix and the reinforcement, the pipe has better low temperature resistance and can be used for conveying liquefied natural gas;
5. the continuous polymer fiber reinforcement is spirally and alternately wound to form a tube shape, and the related structure can lead the single polymer composite material tube to bear the functions of main stress, temperature and creep resistance in the use process and simultaneously has the function of deflection and bending;
6. The single polymer composite material pipe with the inner liner layer and the outer protective layer is adopted, the inner liner layer can ensure that the inner wall is smooth, the flow resistance is small, the inner liner layer is wear-resistant and difficult to scale, the inner liner layer can play roles in medium diversion, corrosion resistance and internal stress conduction, and the outer protective layer plays roles in protecting and enhancing the core layer and external stress conduction;
7. the single polymer composite material filament/belt adopts a double/multi-component single polymer composite material filament/belt, the heating temperature of a hot melting system is higher than the melting point of one component polymer and lower than the melting point of the other component polymer, so that the component polymers with low melting points can be melted to form a matrix, the unmelted other component polymer fibers are bonded, the unmelted other component polymer fibers keep original mechanical properties, and the mechanical properties of a final forming tube are further ensured;
8. the number of winding layers of the single polymer composite fiber filaments/bands of the single polymer composite tube can be set according to the needs and technical requirements, so that the mechanical properties and the bending degree of the final tube are controlled;
9. the single polymer composite material pipe has the characteristic of easy processing and forming, can simplify the winding forming process of the conventional thermoplastic composite material pipe, and is completed through the forming process of pipe die, winding, hot melting and cooling.
Drawings
FIG. 1 is a front view of a tube of the single polymer composite of example 1 of the present invention;
FIG. 2 is a front view of a tube of the single polymer composite of example 2 of the present invention;
FIG. 3 is a front view of a tube of the single polymer composite of example 3 of the present invention;
FIG. 4 is a front view of a tube of the single polymer composite of example 4 of the present invention;
FIG. 5 is a side view of a tube of the single polymer composite of the present invention;
FIG. 6 is a schematic view of the internal structure of a filament of a single polymer composite material in an embodiment of the present invention;
FIG. 7 is a schematic illustration of the internal structure of a single polymer composite fiber tape in an embodiment of the present invention;
FIG. 8 is a side view of a tube of the single polymer composite of example 5 of the present invention;
FIG. 9 is a front view of a tube of the single polymer composite of example 9 of the present invention;
FIG. 10 is a front view of a tube of the single polymer composite of example 10 of the present invention;
FIG. 11 is a front view of a tube of the single polymer composite of example 11 of the present invention;
FIG. 12 is a front view of a tube of the single polymer composite of example 12 of the present invention;
in the figure: 1-single polymer composite fiber, 2-single polymer composite fiber band, 3-continuous polymer fiber reinforcement, 4-polymer matrix, 5-inner liner and 6-outer protective layer.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following, various commodity models or terms such as "first", "second", "up", "down", "left", "right", "front", "back", "far", "near" and the like are technical terms that are already known in the art and some positional or spatial definitions for convenience in describing the embodiments are not limiting of the present invention, and are not explained in any greater extent.
Again, the technical terms "wire", "band", submitted in the present invention are common technical knowledge or knowledge of a person skilled in the art, and obviously do not require a detailed numerical range setting of their diameter or width; the term "layer number" as used in connection with the present invention may refer to both the number of braiding layers or the number of thickness layers in the radial direction as carried out in the pipe production process, for example, braiding one layer as one layer (i.e. the sub-layer of the n-layer referred to in the claims) and then braiding the layer (sub-layer) over the second layer, and so on, without overlapping the layer(s) to form new layers (i.e. the new layers are overlapped together to form the m-layer referred to in the claims), and after welding these new layers (i.e. the m-layer) to form a new layer (i.e. the layer of the n-layer tubular structure referred to in the claims), at which time the previous process steps are repeated again on the basis of this new layer (i.e. the layer of the n-layer tubular structure referred to in the claims), and then the new second layer (i.e. the layer of the n-layer tubular structure referred to in the claims) may be formed and welded together; the number of layers presented by the section of the pipe can be seen by naked eyes after the actual pipe is produced, for example, when the forming process is used for processing the single polymer composite pipe, after the processing is finished, the section of the ideal formed pipe presents a ring-shaped state of one layer (at this time, m sub-layers and n layers cannot be distinguished or m=1 and n=1 at this time) under the naked eyes due to the same characteristics of single polymer matrixes after the processing is finished, but in the actual processing, the processed formed pipe still presents a ring shape similar to a annual ring although the section of the pipe can meet the use requirement due to the influence of various subjective and objective factors, the number of layers at this time is just the number of turns similar to the annual ring, at this time, if the welding effect between m layers is good and the welding effect between n layers is poor, the number of turns similar to the annual ring is the number of layers of n layers at this time; if the welding effect between m layers is poor, the welding effect between n layers is also poor, the number of turns similar to a annual ring is the number of m layers, but the n layers are not quite obvious, but from the perspective of discernability (generally, naked eyes or by a magnifying glass or a microscope, of course), one layer with good welding effect can still be defined as n layers, the adjacent layer with poor welding is between the n layers and n+1 or n-1 layers, and the n layers comprise m layers with better welding; if the welding effect between m layers is poor, the welding effect between n layers is good, the number of turns similar to "annual ring" may include both the number of layers of m layers and the number of layers of n layers, then from the point of view of being distinguishable (generally, naked eyes or by means of a magnifying glass or a microscope), one layer with good welding effect may still be defined as n layers, an adjacent layer with poor welding between n layers and n+1 or n+1 layers is still included in the n layers, and each m layer with good welding is included in the n layers (actually, the n layers and the n-1 layer or the n+1 layer are not the n layers originally defined at this time, but for convenience of claim evidence and proof, the n layers and the n-1 layer or the n+1 layer may cross each other to include the originally defined m layers, m-1 and m+1 layers at this time); it may also be mentioned that when the present invention is subjected to destructive experiments after the actual pipe is produced, for example, when the pipe of the present invention is subjected to bending experiments, the pipe of the present invention is layered in the radial direction only when the number of times of bending is more than 2 tens of thousands of times, so that the "number of layers" of the present invention may also refer to the number of layers of the destructive experiments (generally, the number of layers tends to be n layers at this time according to the current experimental results), and thus, the definition of "number of layers" in the present invention is intended to define and explain a kind of definition of the most reasonable scope of the claims of the present invention, whether the ideal state is that of an overall layer, or the number of layers of "annual ring" shape visible to the naked eye, is assumed during processing, or the number of layers generated after the destructive fatigue test, and the definition of the number of layers under different conditions may be completely understood by those skilled in the art through the above explanation without being limited to the specific relation between n and m, and those are apparent to those skilled in the art in connection with the detailed description and the present application.
Finally, the technical terms "porosity", "porosity content", which are common technical knowledge or general knowledge known to those skilled in the art, are filed in the technical field of composite materials, and the calculation formula of the porosity content can be referred to in (Polymer Engineering and Science, 2018,58 (12): 2156-2165), and the test method of the porosity content can be referred to general rule of test methods for fiber reinforced plastics performance of GB/T1446-2005, test methods for the porosity content and the fiber volume content of GB/T3365-2008, test methods for industrial Computer Tomography (CT) of GB/T38535-2020 fiber reinforced resin-based composite materials, and ultrasonic test method C scan method of GB/T38537-2020 fiber reinforced resin-based composite materials.
Preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1
Referring to fig. 1 and 5-7, a single polymer composite material pipe is formed by stacking and combining a plurality of layers of single polymer composite material fiber yarns (1) in a cross-woven tubular structure, each layer of single polymer composite material fiber yarns (1) is in a cross-woven structure, the single polymer composite material fiber yarns (1) and the layers are in seamless welding to form a tubular integral structure, the single polymer composite material fiber yarns (1) comprise continuous polymer fiber yarn reinforcements (3) and polymer matrixes (4), the continuous polymer fiber yarn reinforcements (3) and the polymer matrixes (4) are from the same polymer material, and the continuous polymer fiber yarn reinforcements (3) are closely and uniformly distributed in the middle of the polymer matrixes (4).
Example 2
Referring to fig. 2 and 5-7, this embodiment is similar to embodiment 1, except that a single polymer composite tube in this embodiment is formed by stacking and combining multiple layers of single polymer composite fiber strips (2) in a cross-woven tubular structure, each layer of single polymer composite fiber strip (2) is in a cross-woven structure, the single polymer composite fiber strips (2) and the layers are welded together seamlessly to form a tubular integral structure, the single polymer composite fiber strip (2) comprises continuous polymer fiber silk reinforcements (3) and polymer matrixes (4), the continuous polymer fiber silk reinforcements (3) and the polymer matrixes (4) are from the same polymer material, and the continuous polymer fiber silk reinforcements (3) are distributed in the middle of the polymer matrixes (4) tightly and uniformly.
Example 3
Referring to fig. 3, this embodiment is similar to embodiment 1, except that a single polymer composite tube in this embodiment is formed by laminating and combining even-numbered layers of single polymer composite filaments (1) in a spirally wound tubular structure, wherein the spiral winding direction of one layer of single polymer composite filaments (1) is right-handed, the spiral winding direction of the adjacent layers of single polymer composite filaments (1) is left-handed, and seamless welding is performed between the single polymer composite filaments (1) and between the layers to form a tubular integral structure. The single polymer composite fiber (1) comprises a continuous polymer fiber reinforcement (3) and a polymer matrix (4), wherein the continuous polymer fiber reinforcement (3) and the polymer matrix (4) are from the same polymer material, and the continuous polymer fiber reinforcement (3) is tightly and uniformly distributed in the middle of the polymer matrix (4).
Example 4
Referring to fig. 4, this embodiment is similar to embodiment 3, except that a single polymer composite tube in this embodiment is formed by laminating and combining even-numbered layers of single polymer composite fiber tapes (2) in a spirally wound tubular structure, wherein the spiral winding direction of one layer of single polymer composite fiber tape (2) is right-handed, the spiral winding direction of the adjacent layers of single polymer composite fiber tapes (2) is left-handed, and seamless fusion between the single polymer composite fiber tapes (2) and between the layers forms a tubular integral structure. The single polymer composite fiber band (2) comprises a continuous polymer fiber reinforcement (3) and a polymer matrix (4), wherein the continuous polymer fiber reinforcement (3) and the polymer matrix (4) are from the same polymer material, and the continuous polymer fiber reinforcement (3) is tightly and uniformly distributed in the middle of the polymer matrix (4).
Example 5
Referring to fig. 8, this embodiment is similar to the previous embodiment, except that a single polymer composite tube in this embodiment is composed of cross-wound single polymer composite filaments/tapes, which are cross-wound and seamlessly welded to form a tubular integral structure, the single polymer composite filaments/tapes include a continuous polymer filament reinforcement (3) and a polymer matrix (4), the continuous polymer filament reinforcement (3) and the polymer matrix (4) are made of the same polymer material, the continuous polymer filament reinforcement (3) is tightly and uniformly distributed in the middle of the polymer matrix (4), and further include an inner liner (5) and an outer protective layer (6), which are respectively positioned at the innermost and outermost sides of the cross-wound single polymer composite filament/tape tubular structure, and the inner liner (5) and the outer protective layer (6) are made of the same material as the polymer matrix (4).
Example 6
This embodiment is similar to the previous embodiments, except that a single polymer composite tube in this embodiment is comprised of cross-wound single polymer composite filaments/ribbons, characterized in that: the single polymer composite fiber silk/belt is wound in a crossed and seamless way to form a tubular integral structure, the single polymer composite fiber silk/belt comprises a continuous polymer fiber silk reinforcement body (3) and a polymer matrix (4), the continuous polymer fiber silk reinforcement body (3) and the polymer matrix (4) are from the same polymer material, and the continuous polymer fiber silk reinforcement body (3) is tightly and uniformly distributed in the middle of the polymer matrix (4); the single polymer composite material filament/belt is a double-component single polymer composite material filament/belt, and each component material belongs to the same polymer with the same chemical formula, wherein the melting point of one component is lower than that of the other component.
The single polymer composite tube is formed primarily by hot melt bonding, with the hot melt temperature being higher than the melting point of one component polymer and lower than the melting point of the other component polymer.
Example 7
This embodiment is similar to the previous embodiments, except that a single polymer composite tube in this embodiment is comprised of cross-wound single polymer composite filaments/ribbons, characterized in that: the single polymer composite fiber yarn/belt is wound in a crossed and seamless way to form a tubular integral structure, the single polymer composite fiber yarn/belt comprises a continuous polymer fiber yarn reinforcement body (3) and a polymer matrix (4), the material of the continuous polymer fiber yarn reinforcement body (3) is homo-polypropylene, the material of the polymer matrix (4) is co-polypropylene, and the continuous polymer fiber yarn reinforcement body (3) is tightly and uniformly distributed in the middle of the polymer matrix (4).
Example 8
The embodiment is similar to the previous embodiment, and is different in that the polypropylene single polymer composite tube is formed by stacking and combining a plurality of layers of polypropylene single polymer composite fiber filaments (1) in a cross-woven tubular structure, each layer of polypropylene single polymer composite fiber filaments (1) is in a cross-woven structure, seamless welding is performed between the polypropylene single polymer composite fiber filaments (1) and between the layers to form a tubular integral structure, the polypropylene single polymer composite fiber filaments (1) comprise continuous polymer fiber reinforcement (3) and a polymer matrix (4), the continuous polymer fiber reinforcement (3) is made of homo-polypropylene, the polymer matrix (4) is made of co-polypropylene, the continuous polymer fiber reinforcement (3) is closely and uniformly distributed in the middle of the polymer matrix (4), the polypropylene single polymer composite fiber filaments further comprise an inner liner (5) and an outer protective layer (6), the inner liner (5) and the outer protective layer (6) are respectively positioned at the innermost side and the outermost side of the cross-wound single polymer composite fiber filaments (1) tubular structure, and the inner liner (5) and the outer protective layer (6) are made of the same material as the polymer matrix (4). The polypropylene single polymer composite tube had an inner diameter dimension of 8 inches, an outer diameter of 355 millimeters, a length of 100 meters, and a minimum bend radius of 2 meters. Can be used for conveying liquefied natural gas.
Example 9
Referring to fig. 9, this embodiment is similar to the above embodiment, except that a single polymer composite tube in this embodiment is formed by stacking and combining multiple layers of single polymer composite fiber filaments/tapes in a tubular structure, wherein the spiral winding direction of the single polymer composite fiber filaments/tapes in the first layer is left-handed or right-handed, the adjacent single polymer composite fiber filaments/tapes in the second layer are cross-woven, the adjacent single polymer composite fiber filaments/tapes in the third layer are spiral-wound, the spiral winding direction is right-handed or left-handed, the adjacent single polymer composite fiber filaments/tapes in the fourth layer are cross-woven, and so on; the filaments/tapes of the single polymer composite material are seamlessly welded together and between layers to form a tubular integral structure. The single polymer composite fiber filament/tape comprises a continuous polymer fiber filament reinforcement (3) and a polymer matrix (4), wherein the continuous polymer fiber filament reinforcement (3) and the polymer matrix (4) are from the same polymer material, and the continuous polymer fiber filament reinforcement (3) is tightly and uniformly distributed in the middle of the polymer matrix (4). It will also be apparent to those skilled in the art in this example that the direction of the spiral winding of the filaments/ribbons of the single polymer composite material in this example may be either co-directional or counter-directional.
Example 10
Referring to fig. 10, this embodiment is similar to embodiment 9 described above, except that a single polymer composite tube in this embodiment is formed by stacking and combining multiple layers of single polymer composite filaments/tapes in a tubular structure, wherein a first layer of single polymer composite filaments/tapes is of a cross-weave structure, an adjacent second layer of single polymer composite filaments/tapes is of a spiral-wound, spiral-wound direction is left-handed or right-handed, an adjacent third layer of single polymer composite filaments/tapes is of a cross-weave structure, an adjacent fourth layer of single polymer composite filaments/tapes is of a spiral-wound, spiral-wound direction is right-handed or left-handed, and so on; the filaments/tapes of the single polymer composite material are seamlessly welded together and between layers to form a tubular integral structure. The single polymer composite fiber filament/tape comprises a continuous polymer fiber filament reinforcement (3) and a polymer matrix (4), wherein the continuous polymer fiber filament reinforcement (3) and the polymer matrix (4) are from the same polymer material, and the continuous polymer fiber filament reinforcement (3) is tightly and uniformly distributed in the middle of the polymer matrix (4). It will also be apparent to those skilled in the art in this example that the direction of the spiral winding of the filaments/ribbons of the single polymer composite material in this example may be either co-directional or counter-directional.
Example 11
Referring to fig. 11, this embodiment is similar to embodiment 9 described above, except that a single polymer composite tube in this embodiment is formed by stacking and combining multiple layers of single polymer composite filaments/strips, in which the single polymer composite filaments in the first layer are cross-woven or spiral wound, the spiral winding direction is left-handed or right-handed, the adjacent second layer is cross-woven or spiral wound, the spiral winding direction is left-handed or right-handed, the adjacent third layer is cross-woven or spiral wound, the spiral winding direction is left-handed or right-handed, the adjacent fourth layer is cross-woven or spiral wound, the spiral winding direction is left-handed or right-handed, and so on; the filaments/tapes of the single polymer composite material are seamlessly welded together and between layers to form a tubular integral structure. The single polymer composite fiber filament/tape comprises a continuous polymer fiber filament reinforcement (3) and a polymer matrix (4), wherein the continuous polymer fiber filament reinforcement (3) and the polymer matrix (4) are from the same polymer material, and the continuous polymer fiber filament reinforcement (3) is tightly and uniformly distributed in the middle of the polymer matrix (4). It will also be apparent to those skilled in the art in this example that the direction of the spiral winding of the filaments/ribbons of the single polymer composite material in this example may be either co-directional or counter-directional.
Example 12
Referring to fig. 12, this embodiment is similar to embodiment 11 described above, except that a single polymer composite tube in this embodiment is formed by stacking and combining multiple layers of single polymer composite fiber filaments/tapes, in which the single polymer composite fiber tapes of the first layer are of a cross-woven structure or are spirally wound, the spiral winding direction is left-handed or right-handed, the adjacent second layer is of a cross-woven structure or are spirally wound, the spiral winding direction is left-handed or right-handed, the adjacent third layer is of a cross-woven structure or are spirally wound, the spiral winding direction is left-handed or right-handed, the adjacent fourth layer is of a cross-woven structure or are spirally wound, the spiral winding direction is left-handed or right-handed, and so on; the filaments/tapes of the single polymer composite material are seamlessly welded together and between layers to form a tubular integral structure. The single polymer composite fiber filament/tape comprises a continuous polymer fiber filament reinforcement (3) and a polymer matrix (4), wherein the continuous polymer fiber filament reinforcement (3) and the polymer matrix (4) are from the same polymer material, and the continuous polymer fiber filament reinforcement (3) is tightly and uniformly distributed in the middle of the polymer matrix (4). It will also be apparent to those skilled in the art in this example that the direction of the spiral winding of the filaments/ribbons of the single polymer composite material in this example may be either co-directional or counter-directional.
From the foregoing description of the various embodiments, it will be apparent to those skilled in the art that, whether a single polymer composite fiber filament or a single polymer composite fiber ribbon is used in the various embodiments of the present invention, whether a woven or wound layer is used, whether a polymer composite fiber filament or a single polymer composite fiber ribbon is used in the various layers, and whether the woven layer is used, and whether the wound layer is used in the winding direction, various embodiments may be obtained by those skilled in the art through an arrangement and combination manner, so the present invention is not repeated. It is also explicitly stated that the non-illustrated embodiments are not applicable to the "public donation" principle.
The invention includes, but is not limited to, the above embodiments, any equivalent or partial modification made under the spirit and principles of the present invention, will be considered to be within the scope of the present invention.

Claims (43)

1. A single polymer composite tube comprising an n-layer tubular structure, wherein n is greater than or equal to 1; the method is characterized in that: each layer of the tubular structure comprises m sub-layers of single polymer composite fiber filaments/bands, wherein m is more than or equal to 1; the single polymer composite filaments/tapes are laminated together by cross winding or cross braiding; wherein each of the m sublayers is seamlessly welded between filaments/ribbons of single polymer composite material, and each of the n-layer tubular structures is seamlessly welded between the layers; the values of n and m are respectively arranged and combined, the cross winding direction is spiral left-handed or spiral right-handed, the cross winding direction of adjacent sublayers is same or different, and each sublayer single polymer composite material in the m sublayers is selected as a single polymer composite material fiber yarn or a single polymer composite material fiber band; and when n=1 and m=1, the single polymer composite tube contains only one sub-layer of single polymer composite filaments/tapes, at which time the single polymer composite filaments/tapes are seamlessly welded.
2. The single polymer composite tube of claim 1, wherein: the single polymer composite material pipe further comprises an inner liner layer, wherein the inner liner layer is located at the innermost side of the n-layer tubular structure, and the inner liner layer is in seamless welding with the adjacent tubular structure or is sleeved on the outer side of the inner liner layer.
3. The single polymer composite tube of any one of claims 1 to 2, wherein: the single polymer composite material pipe further comprises an outer protective layer, wherein the outer protective layer is positioned at the outermost side of the n-layer tubular structure, and the outer protective layer is in seamless welding with the adjacent tubular structure or sleeved at the outer side of the n-layer tubular structure.
4. The single polymer composite tube of any one of claims 1 to 2, wherein: the single polymer composite fiber filament/tape comprises a continuous polymer fiber filament reinforcement and a polymer matrix derived from the same polymer material, the continuous polymer fiber filaments being closely and uniformly distributed in the middle of the polymer matrix.
5. The single polymer composite tube of claim 3, wherein: the single polymer composite fiber filament/tape comprises a continuous polymer fiber filament reinforcement and a polymer matrix derived from the same polymer material, the continuous polymer fiber filaments being closely and uniformly distributed in the middle of the polymer matrix.
6. The tube of single polymer composite according to claim 1 or 2 or 5, wherein: the pore content of the pipe wall of the single polymer composite pipe is 0-20%.
7. The single polymer composite tube of claim 3, wherein: the pore content of the pipe wall of the single polymer composite pipe is 0-20%.
8. The tube of single polymer composite material of claim 4, wherein: the pore content of the pipe wall of the single polymer composite pipe is 0-20%.
9. The tube of single polymer composite material of claim 4, wherein: when the single polymer composite pipe is provided with an inner liner, the inner liner is made of the same material as the polymer matrix material.
10. The single polymer composite tube of claim 8, wherein: when the single polymer composite pipe is provided with an inner liner, the inner liner is made of the same material as the polymer matrix material.
11. The single polymer composite tube of claim 5 or 7, wherein: when the single polymer composite tube is provided with an outer protective layer, the outer protective layer is made of the same material as the polymer matrix material.
12. The tube of single polymer composite material of claim 4, wherein: the material of the continuous polymer fiber reinforcement and the polymer matrix is selected from any polymer with the same chemical formula in homo-polypropylene, co-polypropylene, low density polyethylene, high density polyethylene, ultra-high molecular weight polyethylene, linear low density polyethylene, polyamide 6, polyamide 66, polyethylene terephthalate, polyethylene naphthalate, polylactic acid, polyether ether ketone and polybutylene terephthalate, wherein the co-polypropylene comprises polypropylene block copolymer and polypropylene random copolymer.
13. The tube of single polymer composite material according to claim 8 or 9, wherein: the material of the continuous polymer fiber reinforcement and the polymer matrix is selected from any polymer with the same chemical formula in homo-polypropylene, co-polypropylene, low density polyethylene, high density polyethylene, ultra-high molecular weight polyethylene, linear low density polyethylene, polyamide 6, polyamide 66, polyethylene terephthalate, polyethylene naphthalate, polylactic acid, polyether ether ketone and polybutylene terephthalate, wherein the co-polypropylene comprises polypropylene block copolymer and polypropylene random copolymer.
14. The single polymer composite tube of claim 10, wherein: the material of the continuous polymer fiber reinforcement and the polymer matrix is selected from any polymer with the same chemical formula in homo-polypropylene, co-polypropylene, low density polyethylene, high density polyethylene, ultra-high molecular weight polyethylene, linear low density polyethylene, polyamide 6, polyamide 66, polyethylene terephthalate, polyethylene naphthalate, polylactic acid, polyether ether ketone and polybutylene terephthalate, wherein the co-polypropylene comprises polypropylene block copolymer and polypropylene random copolymer.
15. The single polymer composite tube of any one of claims 1, 2, 5, 7, 8, 9, 10, 12, 14, wherein: the single polymer composite filaments/ribbons comprise 2 or more continuous polymer fiber filaments/ribbons.
16. The single polymer composite tube of claim 3, wherein: the single polymer composite filaments/ribbons comprise 2 or more continuous polymer fiber filaments/ribbons.
17. The tube of single polymer composite material of claim 4, wherein: the single polymer composite filaments/ribbons comprise 2 or more continuous polymer fiber filaments/ribbons.
18. The single polymer composite tube of claim 6, wherein: the single polymer composite filaments/ribbons comprise 2 or more continuous polymer fiber filaments/ribbons.
19. The single polymer composite tube of claim 11, wherein: the single polymer composite filaments/ribbons comprise 2 or more continuous polymer fiber filaments/ribbons.
20. The single polymer composite tube of claim 13, wherein: the single polymer composite filaments/ribbons comprise 2 or more continuous polymer fiber filaments/ribbons.
21. The single polymer composite tube of any one of claims 1, 2, 5, 7, 8, 9, 10, 12, 14, 16-20, wherein: the single polymer composite material filament/belt is a double/multi-component single polymer composite material filament/belt, and each component material belongs to the same polymer with the same chemical formula, wherein the melting point of one component is lower than that of the other components.
22. The single polymer composite tube of claim 3, wherein: the single polymer composite material filament/belt is a double/multi-component single polymer composite material filament/belt, and each component material belongs to the same polymer with the same chemical formula, wherein the melting point of one component is lower than that of the other components.
23. The tube of single polymer composite material of claim 4, wherein: the single polymer composite material filament/belt is a double/multi-component single polymer composite material filament/belt, and each component material belongs to the same polymer with the same chemical formula, wherein the melting point of one component is lower than that of the other components.
24. The single polymer composite tube of claim 6, wherein: the single polymer composite material filament/belt is a double/multi-component single polymer composite material filament/belt, and each component material belongs to the same polymer with the same chemical formula, wherein the melting point of one component is lower than that of the other components.
25. The single polymer composite tube of claim 11, wherein: the single polymer composite material filament/belt is a double/multi-component single polymer composite material filament/belt, and each component material belongs to the same polymer with the same chemical formula, wherein the melting point of one component is lower than that of the other components.
26. The single polymer composite tube of claim 13, wherein: the single polymer composite material filament/belt is a double/multi-component single polymer composite material filament/belt, and each component material belongs to the same polymer with the same chemical formula, wherein the melting point of one component is lower than that of the other components.
27. The single polymer composite tube of claim 15, wherein: the single polymer composite material filament/belt is a double/multi-component single polymer composite material filament/belt, and each component material belongs to the same polymer with the same chemical formula, wherein the melting point of one component is lower than that of the other components.
28. The single polymer composite tube of any one of claims 5, 8, 9, 10, 12, 14, 17, 20, 23, 26, wherein: the content of the continuous polymer fiber reinforcement is more than or equal to 50 percent.
29. The tube of single polymer composite material of claim 4, wherein: the content of the continuous polymer fiber reinforcement is more than or equal to 50 percent.
30. The single polymer composite tube of claim 13, wherein: the content of the continuous polymer fiber reinforcement is more than or equal to 50 percent.
31. The tube of single polymer composite material of claim 4, wherein: the material of the continuous polymer fiber reinforcement is homo-polypropylene, and the material of the polymer matrix is co-polypropylene.
32. The single polymer composite tube of any one of claims 5, 8, 9, 10, 12, 14, 17, 20, 23, 26, 29, 30, wherein: the material of the continuous polymer fiber reinforcement is homo-polypropylene, and the material of the polymer matrix is co-polypropylene.
33. The single polymer composite tube of claim 13, wherein: the material of the continuous polymer fiber reinforcement is homo-polypropylene, and the material of the polymer matrix is co-polypropylene.
34. The single polymer composite tube of claim 28, wherein: the material of the continuous polymer fiber reinforcement is homo-polypropylene, and the material of the polymer matrix is co-polypropylene.
35. A tube of single polymer composite material consisting of cross-wound single polymer composite material filaments/ribbons characterized by: the single polymer composite fiber silk/band is wound in a crossed and seamless way to form a tubular integral structure, the single polymer composite fiber silk/band comprises a continuous polymer fiber silk reinforcement body and a polymer matrix, the continuous polymer fiber silk reinforcement body and the polymer matrix are from the same polymer material, the continuous polymer fiber silk is tightly and uniformly distributed in the middle of the polymer matrix, and the pore content of the pipe wall is 0-20%.
36. The single polymer composite tube of claim 35, wherein: the material of the continuous polymer fiber reinforcement and the polymer matrix is selected from any of the same chemical formula polymers selected from the group consisting of homo-polypropylene, co-polypropylene, low density polyethylene, high density polyethylene, ultra high molecular weight polyethylene, linear low density polyethylene, polyamide 6, polyamide 66, polyethylene terephthalate, polyethylene naphthalate, polylactic acid, polyetheretherketone, polybutylene terephthalate, wherein the co-polypropylene comprises polypropylene block copolymers and polypropylene random copolymers.
37. The single polymer composite tube of claim 35, wherein: the tubular structure is formed by stacking and combining a plurality of layers of single polymer composite material fiber yarns/strips in a cross-woven manner, wherein each layer of single polymer composite material fiber yarns/strips are in a cross-woven structure, and the single polymer composite material fiber yarns/strips and the layers are in seamless welding connection to form the tubular integral structure.
38. The single polymer composite tube of claim 35, wherein: the single polymer composite fiber structure is formed by laminating and combining even-number layers of single polymer composite fiber yarns/strips in a spiral winding manner, wherein the spiral winding direction of the single polymer composite fiber yarns/strips in one layer is right-handed, the spiral winding direction of the single polymer composite fiber yarns/strips in the adjacent layer is left-handed, and the single polymer composite fiber yarns/strips and the layers are welded together seamlessly to form a tubular integral structure.
39. The single polymer composite tube of claim 35, wherein: the inner liner layer and the outer protective layer are respectively positioned at the innermost side and the outermost side of the cross-wound single polymer composite fiber/ribbon tubular structure, and the inner liner layer and the outer protective layer are made of the same material as the polymer matrix material.
40. The single polymer composite tube of claim 35, wherein: the single polymer composite filaments/tapes are assembled from a plurality of smaller size continuous polymer filaments/tapes.
41. The single polymer composite tube of claim 35, wherein: the single polymer composite material filament/belt is a double/multi-component single polymer composite material filament/belt, and each component material belongs to the same polymer with the same chemical formula, wherein the melting point of one component is lower than that of the other components.
42. The single polymer composite tube of claim 35, wherein: the material of the continuous polymer fiber reinforcement is homo-polypropylene, and the material of the polymer matrix is co-polypropylene.
43. The single polymer composite tube of claim 35, wherein: the content of the continuous polymer fiber reinforcement is not less than 50%.
CN202210592763.4A 2022-05-27 2022-05-27 Single polymer composite pipe Active CN115076472B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1103474A (en) * 1992-12-29 1995-06-07 流行建筑有限公司 Multilayer pipe and die for manufacturing it
CN103574187A (en) * 2013-10-21 2014-02-12 王庆昭 Flexible ultra-high molecular weight polyethylene composite tube as well as preparation method and production system thereof
RU151868U1 (en) * 2014-07-24 2015-04-20 Общество с ограниченной ответственностью "ФитингБюро" REINFORCED POLYMER PIPE, REINFORCING SYSTEM AND INTEGRATED REINFORCING THREAD FOR IT
CN208967262U (en) * 2018-08-28 2019-06-11 河北恒安泰油管有限公司 A kind of adhered flexible composite pipe

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1337431A (en) * 1962-08-01 1963-09-13 Tecalemit Advanced flexible tubing for high pressures
JPS5977188A (en) * 1982-10-23 1984-05-02 田中紙管株式会社 Manufacture of spiral wound pipe
US4944974A (en) * 1984-10-24 1990-07-31 Zachariades Anagnostis E Composite structures of ultra-high-molecular-weight polymers, such as ultra-high-molecular-weight polyethylene products, and method of producing such structures
US20020056511A1 (en) * 1991-09-24 2002-05-16 Boney Mathew Method of making fluorocarbon coated braided hose assemblies
WO2011126840A1 (en) * 2010-03-30 2011-10-13 Martucci Norman S Hose for fluids pulsating at high pressure and frequency and method of construction
CN103358516B (en) * 2013-07-04 2016-01-13 北京理工大学 Single polymer composite product melting coated roller transfer moulding method and equipment
CN103712000A (en) * 2013-12-31 2014-04-09 陆宇航 Multi-layer wound composite tube
CN204477521U (en) * 2014-12-25 2015-07-15 浙江伟星新型建材股份有限公司 A kind of high abrasion reinforced composite pipe material
CN113800837B (en) * 2021-09-30 2022-11-25 湖南工业大学 Continuous carbon fiber reinforced phosphate group geopolymer composite material and preparation method thereof
CN114228023B (en) * 2021-12-15 2023-02-28 北京化工大学 Hot press molding method and device for double-component single polymer composite material product

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1103474A (en) * 1992-12-29 1995-06-07 流行建筑有限公司 Multilayer pipe and die for manufacturing it
CN103574187A (en) * 2013-10-21 2014-02-12 王庆昭 Flexible ultra-high molecular weight polyethylene composite tube as well as preparation method and production system thereof
RU151868U1 (en) * 2014-07-24 2015-04-20 Общество с ограниченной ответственностью "ФитингБюро" REINFORCED POLYMER PIPE, REINFORCING SYSTEM AND INTEGRATED REINFORCING THREAD FOR IT
CN208967262U (en) * 2018-08-28 2019-06-11 河北恒安泰油管有限公司 A kind of adhered flexible composite pipe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
聚乙烯单聚合物复合材料研究进展;王遂;塑料工业;第42卷(第4期);1-4 *

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