CN108036118B - Fiber reinforced thermoplastic composite material pipe and preparation method thereof - Google Patents
Fiber reinforced thermoplastic composite material pipe and preparation method thereof Download PDFInfo
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- CN108036118B CN108036118B CN201810138359.3A CN201810138359A CN108036118B CN 108036118 B CN108036118 B CN 108036118B CN 201810138359 A CN201810138359 A CN 201810138359A CN 108036118 B CN108036118 B CN 108036118B
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- 239000000835 fiber Substances 0.000 title claims abstract description 168
- 239000002131 composite material Substances 0.000 title claims abstract description 154
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 141
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 141
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 345
- 239000011347 resin Substances 0.000 claims abstract description 345
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 87
- 239000002657 fibrous material Substances 0.000 claims abstract description 79
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims description 218
- 238000010438 heat treatment Methods 0.000 claims description 58
- 238000010924 continuous production Methods 0.000 claims description 14
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 239000002033 PVDF binder Substances 0.000 claims description 8
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 8
- 229920002530 polyetherether ketone Polymers 0.000 claims description 8
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 8
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 7
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 7
- 229920002748 Basalt fiber Polymers 0.000 claims description 6
- 229920006231 aramid fiber Polymers 0.000 claims description 6
- 238000004093 laser heating Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 279
- 239000000463 material Substances 0.000 abstract description 7
- 230000003014 reinforcing effect Effects 0.000 abstract description 7
- 239000003733 fiber-reinforced composite Substances 0.000 abstract description 5
- 239000011241 protective layer Substances 0.000 abstract description 4
- 238000011056 performance test Methods 0.000 description 16
- 239000011229 interlayer Substances 0.000 description 13
- 229920001187 thermosetting polymer Polymers 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000012783 reinforcing fiber Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000004760 aramid Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229920006258 high performance thermoplastic Polymers 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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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
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/133—Rigid pipes of plastics with or without reinforcement the walls consisting of two layers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/10—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/16—Homopolymers or copolymers or vinylidene fluoride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/16—Condensation polymers of aldehydes or ketones with phenols only of ketones with phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/02—Polythioethers; Polythioether-ethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The invention relates to a fiber reinforced thermoplastic composite material pipe, which solves the technical problems of poor adhesion between a reinforcing layer and an inner liner layer and between an outer protective layer, complex adhesion process and difficult control of the fiber reinforced composite material pipe in the prior art. The invention provides a fiber reinforced thermoplastic composite material pipe, which is prepared from a thermoplastic resin and a fiber material, wherein the fiber reinforced thermoplastic composite material pipe is a multilayer structure consisting of an inner layer, an intermediate layer and an outer layer, the intermediate layer is at least one layer of structure, the multilayer structure comprises a high resin content layer, a middle resin content layer and a low resin content layer, the resin content in the high resin content layer is 75-90%, the resin content in the middle resin content layer is 45-70%, and the resin content in the low resin content layer is 10-40%; also provides a preparation method thereof. The invention is widely applied to the field of fiber reinforced composite tube manufacturing.
Description
Technical Field
The invention relates to the field of fiber reinforced composite pipe manufacturing, in particular to a fiber reinforced thermoplastic composite pipe and a preparation method thereof.
Background
At present, oil gas energy is still the dominant of human energy demand, along with the improvement of the exploration difficulty of oil gas resources, the defects of easy corrosion, heavy weight, high installation cost and the like of the traditional metal pipe are gradually revealed, and the composite pipe with good flexibility, corrosion resistance and easy installation gradually replaces the metal pipe and is increasingly applied to engineering in the oil gas exploitation industry. The thermosetting composite flexible pipe has slow development due to the characteristics of pipe materials such as incapability of recycling, poor ductility and the like; non-bonded flexible pipe is prone to interlayer separation and interlayer abrasion problems have prevented its development. The existing fiber reinforced composite pipe is divided into a fiber reinforced thermosetting composite pipe and a fiber reinforced thermoplastic composite pipe, wherein the winding and the curing of the thermosetting composite pipe are completed through a die and a core die about the fiber reinforced thermosetting composite pipe, the length of the produced pipe is limited, continuous production cannot be achieved, and the use of the thermosetting material is not beneficial to material recycling. The thermoplastic bonding type composite flexible pipe is formed by compounding reinforcing fibers and thermoplastic resin, so that a pipeline structure with a reinforcing layer is formed, and the pipeline performance and parameters are greatly improved.
In a conventional fiber reinforced thermoplastic composite pipe, a fiber reinforced composite layer comprises a fiber reinforced thermosetting material and a fiber reinforced thermoplastic composite material, and is mainly used as a stress bearing layer in pipe production and exists between an inner liner layer and an outer protective layer, and the component content in the reinforcing layer is kept consistent. The reinforcing layer of the existing thermoplastic bonding type composite flexible pipe is mainly formed by winding and bonding fiber reinforced thermoplastic composite material prepreg tapes, in the pipeline production process, reinforcing fiber yarns and thermoplastic resin are subjected to prepreg extrusion processing to prepare the fiber reinforced thermoplastic composite material prepreg tapes, then the prepreg tapes are spirally wound on an inner liner extrusion pipe according to a set angle through a winding unit, and the reinforcing layer is formed through a heating press roller. In the production process of the composite flexible pipe, due to the difference of matrix resin and composition between the reinforcing layer and the inner liner layer and the outer protective layer, the adhesion between the reinforcing layer and the inner liner layer and the outer protective layer is a main problem of design. If the adhesion of each layer is not well controlled, interlayer slippage can occur and more serious interlayer abrasion can occur.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a fiber reinforced thermoplastic composite pipe with simple and reasonable raw material composition, proper proportion, strong interlayer adhesion and simple and controllable bonding process and a preparation process thereof on the basis of the preparation process of the conventional fiber reinforced thermoplastic composite pipe.
The technical scheme adopted for solving the technical problems is as follows:
the fiber reinforced thermoplastic composite material pipe is a multi-layer structure consisting of an inner layer, an intermediate layer and an outer layer, wherein the intermediate layer is at least one layer of structure, the multi-layer structure comprises a high resin content layer, a middle resin content layer and a low resin content layer, the resin content in the high resin content layer is 75-90%, the resin content in the middle resin content layer is 45-70%, and the resin content in the low resin content layer is 10-40%.
Preferably, the resin content in the high resin content layer is 75-85%, the resin content in the medium resin content layer is 50-60%, and the resin content in the low resin content layer is 15-25%.
Preferably, the high resin content layer has a resin content of 80%, the medium resin content layer has a resin content of 55%, and the low resin content layer has a resin content of 25%.
Preferably, the thickness of the high resin content layer is 1.25-8 mm, the thickness of the medium resin content layer is 4-16 mm, and the thickness of the low resin content layer is 1.25-8 mm.
Preferably, the resin content in the multilayer structure increases from the inner layer to the outer layer sequentially or decreases sequentially.
Preferably, the thermoplastic resin is any one of polyvinylidene fluoride, polyphenylene sulfide and polyether ether ketone.
Preferably, the fiber material is any one of glass fiber, carbon fiber, aramid fiber or basalt fiber.
The preparation method of the fiber reinforced thermoplastic composite pipe comprises the following steps: mixing fiber material and thermoplastic resin in proportion, winding while heating and melting, and bonding to form a pipe; when the thermoplastic resin is polyvinylidene fluoride, the heating and melting temperature is 160-190 ℃; when the thermoplastic resin is polyphenylene sulfide fiber, the heating and melting temperature is 270-280 ℃; when the thermoplastic resin is polyether-ether-ketone fiber, the heating and melting temperature is 320-350 ℃.
Preferably, the winding angle α is in the range of 15 to 85 °.
Preferably, the heating mode is any one of laser heating, infrared heating and electromagnetic heating.
The invention has the beneficial effects that:
the raw material of the fiber reinforced thermoplastic composite material pipe is composed of a thermoplastic resin and a fiber material, the same thermoplastic resin material and the same fiber are used in the whole pipe winding process, the problem of adhesion between different layers is solved, the adhesion between the layers is obviously enhanced, the bonding force between the fibers is strong, slippage is not easy to occur, the service life of the pipe is long, meanwhile, the production process of the pipe is simplified, and the control is easy.
Drawings
FIG. 1 is a schematic view of a three-layer structure of the present invention;
FIG. 2 is a schematic view of a fiber winding pattern;
FIG. 3 is a schematic diagram of a four-layer structure of the present invention;
fig. 4 is a schematic diagram of a five-layer structure of the present invention.
The marks in the figure: 1 mandrel, 2 winding machine, 3 outer layer, 4 middle layer and 5 inner layer.
Detailed Description
The invention will be further described with reference to the drawings and specific examples to aid in understanding the context of the invention. The method used in the invention is a conventional production method unless specified; the raw materials used, if not specified, are all conventional commercial products.
Example 1
As shown in fig. 1, the invention provides a fiber reinforced thermoplastic composite material pipe, which is prepared from a thermoplastic resin and a fiber material, wherein the thermoplastic resin is polyvinylidene fluoride, the fiber material is glass fiber, the component proportion of the fiber is controlled, and the fiber reinforced thermoplastic composite material pipe is wound into a three-layer structure, and the fiber reinforced thermoplastic composite material pipe is formed by a three-layer structure consisting of an inner layer 5, an intermediate layer 4 and an outer layer 3, wherein the three-layer structure comprises a high resin content layer, a middle resin content layer and a low resin content layer, the resin content in the high resin content layer is 75%, and the thickness of the high resin content layer is 1.25mm; the resin content in the middle resin content layer is 45%, and the thickness of the middle resin content layer is 4mm; the resin content in the low resin content layer is 10%, and the thickness of the layer with the low resin content layer is 1.25mm; the structure of the pipe is a low resin content layer-a medium resin content layer-a high resin content layer from the inner layer 5 to the outer layer 3.
The preparation method of the fiber reinforced thermoplastic composite pipe comprises the following steps:
as shown in fig. 2, a winding machine (2) is started, the fiber material and the thermoplastic resin are mixed in proportion and then directly wound on a core mold (1), the winding machine (2) winds the fiber material and the thermoplastic resin while rotating on the core mold (1), and the fiber material and the thermoplastic resin are heated and melted by laser in the winding process and are bonded into a pipe.
Firstly, winding a low resin content layer, wherein the winding angle is 85 DEG, the heating temperature is 160 ℃, and a fiber winding large disc of a winding machine is wound on a core mould in a reciprocating manner, and the thickness of the low resin content layer is 1.25mm; winding the resin content layer in a winding mode, wherein the winding angle is 45 degrees, the heating temperature is 190 ℃, and winding is performed in a reciprocating mode, and the thickness of the resin content layer in the winding mode is 4mm; winding the high resin content layer again, wherein the winding angle is 15 degrees, the heating temperature is 180 degrees, and winding is performed in a reciprocating manner, and the thickness of the high resin content layer is 1.25mm, so that the continuous production of the composite material pipe is completed. The fiber reinforced thermoplastic composite material pipe is manufactured by realizing different bearing forces among multiple layers due to different winding angles of the fibers.
The performance test results of the prepared fiber reinforced thermoplastic composite pipe are as follows:
the peel strength at room temperature is more than 45MPa;
peel strength > 36MPa at 80 ℃;
the peel strength at 120 ℃ is more than 34MPa.
The performance test result of the fiber reinforced thermoplastic composite material pipe shows that the peel strength of the fiber reinforced thermoplastic composite material pipe at room temperature is higher than 45MPa, and the peel strength of the fiber reinforced thermoplastic composite material pipe at 80 ℃ is higher than 36MPa; the peel strength at 120 ℃ is greater than 34MPa, the peel strength at room temperature, the peel strength at 80 ℃ and the peel strength at 120 ℃ meet the requirements and can reach higher levels, which fully shows that the interlayer adhesiveness of the fiber reinforced thermoplastic composite pipe is obviously enhanced, and the fiber reinforced thermoplastic composite pipe is only composed of one thermoplastic resin and one fiber material, and the whole technological process is simple and controllable.
Example 2
As shown in fig. 1, the invention provides a fiber reinforced thermoplastic composite material pipe, which comprises thermoplastic resin and fiber material, wherein the thermoplastic resin is polyphenylene sulfide, and the fiber material is carbon fiber; controlling the component proportion of the fiber, winding into a three-layer structure of a fiber reinforced thermoplastic composite material pipe, wherein the fiber reinforced thermoplastic composite material pipe is composed of an inner layer 5, an intermediate layer 4 and an outer layer 3, the three-layer structure comprises a high resin content layer, a medium resin content layer and a low resin content layer, the resin content in the high resin content layer is 90%, and the thickness of the high resin content layer is 8mm; the resin content in the resin content layer is 70 percent, and the thickness of the resin content layer is 16mm; the resin content in the low resin content layer is 40%, and the thickness of the low resin content layer is 8mm; the structure of the pipe is a high resin content layer-a medium resin content layer-a low resin content layer from the inner layer 5 to the outer layer 3.
The preparation process of the fiber reinforced thermoplastic composite pipe comprises the following steps:
as shown in fig. 2, a winding machine (2) is started, the fiber material and the thermoplastic resin are mixed in proportion and then directly wound on a core mold (1), the winding machine (2) winds the fiber material and the thermoplastic resin while rotating on the core mold (1), and the fiber material and the thermoplastic resin are heated and melted by laser in the winding process and are bonded into a pipe.
Firstly, winding a low resin content layer, wherein the winding angle is 15 degrees, the heating temperature is 280 degrees, and a fiber winding large disc of a winding machine is wound on a core mould in a reciprocating manner, and the thickness of the high resin content layer is 8mm; winding the resin content layer in a winding way, wherein the winding angle is 60 degrees, the heating temperature is 275 ℃, and winding is performed in a reciprocating way, and the thickness of the resin content layer in the winding way is 16mm; and winding the high resin content layer with a winding angle of 15 degrees, a heating temperature of 270 degrees, and winding in a reciprocating manner, wherein the thickness of the low resin content layer is 16mm, so as to complete the continuous production of the composite material pipe. The fiber reinforced thermoplastic composite material pipe is manufactured by realizing different bearing forces among multiple layers due to different winding angles of the fibers.
The performance test results of the prepared fiber reinforced thermoplastic composite pipe are as follows:
the peel strength at room temperature is more than 45MPa;
peel strength > 36MPa at 80 ℃;
the peel strength at 120 ℃ is more than 34MPa.
The performance test result of the fiber reinforced thermoplastic composite material pipe shows that the peel strength of the fiber reinforced thermoplastic composite material pipe at room temperature is higher than 45MPa, and the peel strength of the fiber reinforced thermoplastic composite material pipe at 80 ℃ is higher than 36MPa; the peel strength at 120 ℃ is greater than 34MPa, the peel strength at room temperature, the peel strength at 80 ℃ and the peel strength at 120 ℃ meet the requirements and can reach higher levels, which fully shows that the interlayer adhesiveness of the fiber reinforced thermoplastic composite pipe is obviously enhanced, and the fiber reinforced thermoplastic composite pipe is only composed of one thermoplastic resin and one fiber material, and the whole technological process is simple and controllable.
Example 3
As shown in fig. 1, the invention provides a fiber reinforced thermoplastic composite material pipe, which comprises thermoplastic resin and fiber materials, wherein the thermoplastic resin is polyether-ether-ketone, the fiber materials are aramid fibers, the component ratio of the fibers is controlled, the fiber reinforced thermoplastic composite material pipe is wound into a three-layer structure consisting of an inner layer 5, an intermediate layer 4 and an outer layer 3, the three-layer structure comprises a high resin content layer, a middle resin content layer and a low resin content layer, the resin content in the high resin content layer is 75%, and the thickness of the high resin content layer is 4.5mm; the resin content in the resin content layer is 50%, and the thickness of the resin content layer is 10mm; the resin content in the low resin content layer was 15%, and the layer thickness of the low resin content layer was 4.5mm. The structure of the pipe is a low resin content layer-a medium resin content layer-a high resin content layer from the inner layer 5 to the outer layer 3.
The preparation process of the fiber reinforced thermoplastic composite pipe comprises the following steps:
as shown in fig. 2, a winding machine (2) is started, the fiber material and the thermoplastic resin are mixed in proportion and then directly wound on a core mold (1), the winding machine (2) winds the fiber material and the thermoplastic resin while rotating on the core mold (1), and the fiber material and the thermoplastic resin are heated and melted by laser in the winding process and are bonded into a pipe.
Firstly, winding a low resin content layer, wherein the winding angle is 15 degrees, the heating temperature is 330 degrees, and a fiber winding large disc of a winding machine is wound on a core mould in a reciprocating manner, and the thickness of the low resin content layer is 4.5mm; winding the resin content layer in a winding way, wherein the winding angle is 85 DEG, the heating temperature is 350 ℃, and winding is performed in a reciprocating way, and the thickness of the resin content layer in the winding way is 10mm; winding the high resin content layer again, wherein the winding angle is 15 degrees, the heating temperature is 320 degrees, the winding is performed in a reciprocating manner, the thickness of the high resin content layer is 4.5mm, and the continuous production of the composite material pipe is completed, so that the fiber reinforced thermoplastic composite material pipe is prepared.
The performance test results of the prepared fiber reinforced thermoplastic composite pipe are as follows:
the peel strength at room temperature is more than 45MPa;
peel strength > 36MPa at 80 ℃;
the peel strength at 120 ℃ is more than 34MPa.
The performance test result of the fiber reinforced thermoplastic composite material pipe shows that the peel strength of the fiber reinforced thermoplastic composite material pipe at room temperature is higher than 45MPa, and the peel strength of the fiber reinforced thermoplastic composite material pipe at 80 ℃ is higher than 36MPa; the peel strength at 120 ℃ is greater than 34MPa, the peel strength at room temperature, the peel strength at 80 ℃ and the peel strength at 120 ℃ meet the requirements and can reach higher levels, which fully shows that the interlayer adhesiveness of the fiber reinforced thermoplastic composite pipe is obviously enhanced, and the fiber reinforced thermoplastic composite pipe is only composed of one thermoplastic resin and one fiber material, and the whole technological process is simple and controllable.
Example 4
As shown in fig. 1, the invention provides a fiber reinforced thermoplastic composite material pipe, which comprises thermoplastic resin and fiber materials, wherein the thermoplastic resin is polyether ether ketone, the fiber materials are basalt fibers, the component ratio of the fibers is controlled, the fiber reinforced thermoplastic composite material pipe is wound into a three-layer structure, the fiber reinforced thermoplastic composite material pipe is a multi-layer structure consisting of an inner layer 5, an intermediate layer 4 and an outer layer 3, the three-layer structure comprises a high resin content layer, a middle resin content layer and a low resin content layer, the resin content in the high resin content layer is 85%, and the thickness of the high resin content layer is 4.0mm; the resin content in the resin content layer is 60 percent, and the thickness of the resin content layer is 10mm; the resin content in the low resin content layer is 25%, and the thickness of the layer with the low resin content layer is 4.0mm; the structure of the pipe is a high resin content layer-a medium resin content layer-a low resin content layer from the inner layer 5 to the outer layer 3.
The preparation method of the fiber reinforced thermoplastic composite pipe comprises the following steps:
as shown in fig. 2, a winding machine (2) is started, the fiber material and the thermoplastic resin are mixed in proportion and then directly wound on a core mold (1), the winding machine (2) winds the fiber material and the thermoplastic resin while rotating on the core mold (1), and the fiber material and the thermoplastic resin are heated and melted by laser in the winding process and are bonded into a pipe.
Firstly, winding a low resin content layer, wherein the winding angle is 30 degrees, the heating temperature is 320 degrees, and a fiber winding large disc of a winding machine is wound on a core mould in a reciprocating manner, and the thickness of the low resin content layer is 4.0mm; winding the resin content layer in a winding way, wherein the winding angle is 85 DEG, the heating temperature is 340 ℃, and winding is performed in a reciprocating way, and the thickness of the resin content layer in the winding way is 10mm; and winding the high resin content layer with a winding angle of 15 degrees, a heating temperature of 350 degrees, and winding in a reciprocating manner, wherein the thickness of the high resin content layer is 4.0mm, so as to complete the continuous production of the composite material pipe. The fiber reinforced thermoplastic composite material pipe is manufactured by realizing different bearing forces among multiple layers due to different winding angles of the fibers.
The performance test results of the prepared fiber reinforced thermoplastic composite pipe are as follows:
the peel strength at room temperature is more than 45MPa;
peel strength > 36MPa at 80 ℃;
the peel strength at 120 ℃ is more than 34MPa.
The performance test result of the fiber reinforced thermoplastic composite material pipe shows that the peel strength of the fiber reinforced thermoplastic composite material pipe at room temperature is higher than 45MPa, and the peel strength of the fiber reinforced thermoplastic composite material pipe at 80 ℃ is higher than 36MPa; the peel strength at 120 ℃ is greater than 34MPa, the peel strength at room temperature, the peel strength at 80 ℃ and the peel strength at 120 ℃ meet the requirements and can reach higher levels, which fully shows that the interlayer adhesiveness of the fiber reinforced thermoplastic composite pipe is obviously enhanced, and the fiber reinforced thermoplastic composite pipe is only composed of one thermoplastic resin and one fiber material, and the whole technological process is simple and controllable.
Example 5
As shown in fig. 1, the invention provides a fiber reinforced thermoplastic composite material pipe, which comprises a thermoplastic resin and a fiber material, wherein the thermoplastic resin is polyvinylidene fluoride, the fiber material is aramid fiber, the component proportion of the fiber is controlled, the fiber reinforced thermoplastic composite material pipe is wound into a three-layer structure, the fiber reinforced thermoplastic composite material pipe is a multi-layer structure consisting of an inner layer 5, an intermediate layer 4 and an outer layer 3, the three-layer structure comprises a high resin content layer, a middle resin content layer and a low resin content layer, the resin content in the high resin content layer is 80%, and the thickness of the high resin content layer is 6mm; the resin content in the middle resin content layer is 55%, and the thickness of the middle resin content layer is 8mm; the resin content in the low resin content layer is 25%, and the thickness of the low resin content layer is 6mm; the structure of the pipe is a low resin content layer-a medium resin content layer-a high resin content layer from the inner layer 5 to the outer layer 3.
The preparation method of the fiber reinforced thermoplastic composite pipe comprises the following steps:
as shown in fig. 2, a winding machine (2) is started, the fiber material and the thermoplastic resin are mixed in proportion and then directly wound on a core mold (1), the winding machine (2) winds the fiber material and the thermoplastic resin while rotating on the core mold (1), and the fiber material and the thermoplastic resin are heated and melted by laser in the winding process and are bonded into a pipe.
Firstly, winding a low resin content layer, wherein the winding angle is 15 degrees, the heating temperature is 160 degrees, and a fiber winding large disc of a winding machine is wound on a core mould in a reciprocating manner, and the thickness of the low resin content layer is 6mm; winding the resin content layer in a winding way, wherein the winding angle is 80 degrees, the heating temperature is 190 ℃, and winding is performed in a reciprocating way, and the thickness of the resin content layer in the winding way is 8mm; winding the high resin content layer again, wherein the winding angle is 25 degrees, the heating temperature is 180 degrees, and winding is performed in a reciprocating manner, and the thickness of the high resin content layer is 6mm, so that the continuous production of the composite material pipe is completed. The fiber reinforced thermoplastic composite material pipe is manufactured by realizing different bearing forces among multiple layers due to different winding angles of the fibers.
The performance test results of the prepared fiber reinforced thermoplastic composite pipe are as follows:
the peel strength at room temperature is more than 45MPa;
peel strength > 36MPa at 80 ℃;
the peel strength at 120 ℃ is more than 34MPa.
The performance test result of the fiber reinforced thermoplastic composite material pipe shows that the peel strength of the fiber reinforced thermoplastic composite material pipe at room temperature is higher than 45MPa, and the peel strength of the fiber reinforced thermoplastic composite material pipe at 80 ℃ is higher than 36MPa; the peel strength at 120 ℃ is greater than 34MPa, the peel strength at room temperature, the peel strength at 80 ℃ and the peel strength at 120 ℃ meet the requirements and can reach higher levels, which fully shows that the interlayer adhesiveness of the fiber reinforced thermoplastic composite pipe is obviously enhanced, and the fiber reinforced thermoplastic composite pipe is only composed of one thermoplastic resin and one fiber material, and the whole technological process is simple and controllable.
Example 6
As shown in fig. 3, the present invention provides a fiber reinforced thermoplastic composite pipe, the raw materials include thermoplastic resin and fiber material, the thermoplastic resin is polyvinylidene fluoride, and the fiber material can be glass fiber; controlling the component proportion of the fibers, winding into a four-layer structure of a fiber reinforced thermoplastic composite material pipe, wherein the fiber reinforced thermoplastic composite material pipe is a multi-layer structure consisting of an inner layer 5, an intermediate layer 4 and an outer layer 3, the intermediate layer 4 is of a two-layer structure, the four-layer structure comprises a high resin content layer, a first middle resin content layer, a second middle resin content layer and a low resin content layer, the resin content in the high resin content layer is 75%, and the thickness of the high resin content layer is 1.25mm; the resin content in the first middle resin content layer is 45%, and the thickness of the first middle resin content layer is 4mm; the resin content in the second medium resin content layer is 50%, and the thickness of the second medium resin content layer is 8mm; the resin content in the low resin content layer was 10% and the layer thickness was 1.25mm. The structure of the pipe is a low resin content layer-a first medium resin content layer-a second medium resin content layer-a high resin content layer from the inner layer 5 to the outer layer 3, respectively.
The preparation method of the fiber reinforced thermoplastic composite pipe comprises the following steps:
as shown in fig. 2, a winding machine (2) is started, the fiber material and the thermoplastic resin are mixed in proportion and then directly wound on a core mold (1), the winding machine (2) winds the fiber material and the thermoplastic resin while rotating on the core mold (1), and the fiber material and the thermoplastic resin are heated and melted by laser in the winding process and are bonded into a pipe.
Firstly, winding a low resin content layer, wherein the winding angle is 85 DEG, the heating temperature is 190 ℃, and a fiber winding large disc of a winding machine is wound on a core mould in a reciprocating manner, and the thickness of the low resin content layer is 1.25mm; winding the first medium resin content layer at a winding angle of 75 degrees, heating at 180 ℃ and winding in a reciprocating manner, wherein the thickness of the first medium resin content layer is 4mm; winding the second medium resin content layer at a winding angle of 30 degrees and a heating temperature of 170 ℃ to perform reciprocating winding, wherein the thickness of the second medium resin content layer is 8mm; and winding the high resin content layer with a winding angle of 15 degrees, a heating temperature of 160 degrees, and winding in a reciprocating manner, wherein the thickness of the high resin content layer is 1.25mm, so as to complete the continuous production of the composite material pipe. The fiber reinforced thermoplastic composite material pipe is manufactured by realizing different bearing forces among multiple layers due to different winding angles of the fibers.
The performance test results of the prepared fiber reinforced thermoplastic composite pipe are as follows:
the peel strength at room temperature is more than 45MPa;
peel strength > 36MPa at 80 ℃;
the peel strength at 120 ℃ is more than 34MPa.
The performance test result of the fiber reinforced thermoplastic composite material pipe shows that the peel strength of the fiber reinforced thermoplastic composite material pipe at room temperature is higher than 45MPa, and the peel strength of the fiber reinforced thermoplastic composite material pipe at 80 ℃ is higher than 36MPa; the peel strength at 120 ℃ is greater than 34MPa, the peel strength at room temperature, the peel strength at 80 ℃ and the peel strength at 120 ℃ meet the requirements and can reach higher levels, which fully shows that the interlayer adhesiveness of the fiber reinforced thermoplastic composite pipe is obviously enhanced, and the fiber reinforced thermoplastic composite pipe is only composed of one thermoplastic resin and one fiber material, and the whole technological process is simple and controllable.
Example 7
As shown in fig. 3, the invention provides a fiber reinforced thermoplastic composite material pipe, which comprises thermoplastic resin and fiber material, wherein the thermoplastic resin is polyphenylene sulfide, and the fiber material is aramid fiber; controlling the thermoplastic resin content and the component proportion of fibers, and winding into a fiber reinforced thermoplastic composite material pipe with a four-layer structure, wherein the fiber reinforced thermoplastic composite material pipe is a multi-layer structure consisting of an inner layer 5, an intermediate layer 4 and an outer layer 3, the intermediate layer 4 is of a two-layer structure, the four-layer structure comprises a high resin content layer, a first middle resin content layer, a second middle resin content layer and a low resin content layer, the resin content in the high resin content layer is 90%, and the thickness of the high resin content layer is 8mm; the resin content in the first middle resin content layer is 55%, and the thickness of the layer of the first middle resin content layer is 16mm; the resin content in the second medium resin content layer is 65%, and the thickness of the second medium resin content layer is 4mm; the resin content in the low resin content layer was 25% and the thickness of the low resin content layer was 8mm. The structure of the pipe is a high resin content layer-a first medium resin content layer-a second medium resin content layer-a low resin content layer from the inner layer 5 to the outer layer 3, respectively.
The preparation method of the fiber reinforced thermoplastic composite pipe comprises the following steps:
as shown in fig. 2, a winding machine (2) is started, the fiber material and the thermoplastic resin are mixed in proportion and then directly wound on a core mold (1), the winding machine (2) winds the fiber material and the thermoplastic resin while rotating on the core mold (1), and the fiber material and the thermoplastic resin are heated and melted by laser in the winding process and are bonded into a pipe.
Firstly, winding a low resin content layer, wherein the winding angle is 85 DEG, the heating temperature is 280 ℃, and a fiber winding large disc of a winding machine is wound on a core mould in a reciprocating manner, and the thickness of the low resin content layer is 8mm; winding the first medium resin content layer at a winding angle of 45 degrees and a heating temperature of 270 ℃ to perform reciprocating winding, wherein the thickness of the first medium resin content layer is 16mm; winding the second medium resin content layer at a winding angle of 30 DEG and a heating temperature of 270 ℃ to perform reciprocating winding, wherein the thickness of the second medium resin content layer is 4mm; winding the high resin content layer with a winding angle of 15 degrees, a heating temperature of 280 degrees, and winding in a reciprocating manner, wherein the thickness of the high resin content layer is 8mm, so as to complete the continuous production of the composite material pipe. The fiber reinforced thermoplastic composite material pipe is manufactured by realizing different bearing forces among multiple layers due to different winding angles of the fibers.
The performance test results of the prepared fiber reinforced thermoplastic composite pipe are as follows:
the peel strength at room temperature is more than 45MPa;
peel strength > 36MPa at 80 ℃;
the peel strength at 120 ℃ is more than 34MPa.
The performance test result of the fiber reinforced thermoplastic composite material pipe shows that the peel strength of the fiber reinforced thermoplastic composite material pipe at room temperature is higher than 45MPa, and the peel strength of the fiber reinforced thermoplastic composite material pipe at 80 ℃ is higher than 36MPa; the peel strength at 120 ℃ is greater than 34MPa, the peel strength at room temperature, the peel strength at 80 ℃ and the peel strength at 120 ℃ meet the requirements and can reach higher levels, which fully shows that the interlayer adhesiveness of the fiber reinforced thermoplastic composite pipe is obviously enhanced, and the fiber reinforced thermoplastic composite pipe is only composed of one thermoplastic resin and one fiber material, and the whole technological process is simple and controllable.
Example 8
As shown in fig. 4, the invention provides a fiber reinforced thermoplastic composite material pipe, which comprises thermoplastic resin and fiber materials, wherein the thermoplastic resin is polyetheretherketone, the fiber materials are basalt fibers, the component proportion of the fibers is controlled, the fiber reinforced thermoplastic composite material pipe is wound into a five-layer structure, the fiber reinforced thermoplastic composite material pipe is a multi-layer structure consisting of an inner layer 5, an intermediate layer 4 and an outer layer 3, the intermediate layer 4 is of a three-layer structure, and the five-layer structure comprises a high resin content layer, a first middle resin content layer, a second middle resin content layer, a first low resin content layer and a second low resin content layer, wherein the resin content in the high resin content layer is 80%, and the thickness of the high resin content layer is 2mm; the resin content in the first middle resin content layer is 65%, and the thickness of the first middle resin content layer is 5mm; the resin content in the second medium resin content layer is 55%, and the thickness of the second medium resin content layer is 5mm; the first low resin content layer had a resin content of 25%, the first low resin content layer had a thickness of 2mm, the second low resin content layer had a resin content of 20%, and the second low resin content layer had a thickness of 2mm. The structure of the pipe is a first low resin content layer-a second low resin content layer-a first medium resin content layer-a second medium resin content layer-a high resin content layer from the inner layer 5 to the outer layer 3, respectively.
The preparation method of the fiber reinforced thermoplastic composite pipe comprises the following steps:
as shown in fig. 2, a winding machine (2) is started, the fiber material and the thermoplastic resin are mixed in proportion and then directly wound on a core mold (1), the winding machine (2) winds the fiber material and the thermoplastic resin while rotating on the core mold (1), and the fiber material and the thermoplastic resin are heated and melted by laser in the winding process and are bonded into a pipe.
Firstly, winding a first low-resin-content layer, wherein the winding angle is 85 DEG, the heating temperature is 320 ℃, and a fiber winding large disc of a winding machine is wound on a core mould in a reciprocating manner, and the thickness of the first low-resin-content layer is 2mm; winding the second low-resin-content layer at a winding angle of 75 degrees, heating at 340 ℃, and winding in a reciprocating manner, wherein the thickness of the second low-resin-content layer is 2mm; winding the first medium resin content layer at 15 DEG and 340 ℃ for reciprocal winding, wherein the thickness of the first medium resin content layer is 5mm; winding the second medium resin content layer at a winding angle of 45 degrees and a heating temperature of 340 ℃ to perform reciprocating winding, wherein the thickness of the second medium resin content layer is 5mm; winding the high resin content layer again, wherein the winding angle is 15 degrees, the heating temperature is 350 degrees, and winding is performed in a reciprocating manner, and the thickness of the high resin content layer is 2mm, so that the continuous production of the composite material pipe is completed. The fiber reinforced thermoplastic composite material pipe is manufactured by realizing different bearing forces among multiple layers due to different winding angles of the fibers.
The performance test results of the prepared fiber reinforced thermoplastic composite pipe are as follows:
the peel strength at room temperature is more than 45MPa;
peel strength > 36MPa at 80 ℃;
the peel strength at 120 ℃ is more than 34MPa.
The performance test result of the fiber reinforced thermoplastic composite material pipe shows that the peel strength of the fiber reinforced thermoplastic composite material pipe at room temperature is higher than 45MPa, and the peel strength of the fiber reinforced thermoplastic composite material pipe at 80 ℃ is higher than 36MPa; the peel strength at 120 ℃ is greater than 34MPa, the peel strength at room temperature, the peel strength at 80 ℃ and the peel strength at 120 ℃ meet the requirements and can reach higher levels, which fully shows that the interlayer adhesiveness of the fiber reinforced thermoplastic composite pipe is obviously enhanced, and the fiber reinforced thermoplastic composite pipe is only composed of one thermoplastic resin and one fiber material, and the whole technological process is simple and controllable.
Because the reinforced fiber and the thermoplastic resin fiber are directly adopted for winding and forming, the preparation process of the fiber reinforced thermoplastic composite material prepreg tape is omitted, the preparation process of the fiber reinforced thermoplastic flexible pipe is simplified, the production efficiency is obviously improved, and the production cost is saved.
By introducing the reinforcing fibers and the high-performance thermoplastic resin material, the gas permeation resistance, corrosion resistance, pressure resistance, high temperature resistance and other performances of the pipe body are effectively improved, the service life is prolonged, and the requirements of ocean and land oil gas transportation are met.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "inner", "outer", "intermediate", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must be provided with a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
However, the foregoing is merely illustrative of the present invention, and the invention is not limited to the specific embodiments, for example, the fiber reinforced thermoplastic composite tube may have a multi-layer structure of six or seven layers, and the equivalent changes and modifications of the invention are intended to be covered by the scope of the invention.
Claims (9)
1. The preparation method of the fiber reinforced thermoplastic composite material pipe is characterized in that raw materials comprise a thermoplastic resin and a fiber material, the fiber reinforced thermoplastic composite material pipe comprises a multilayer structure consisting of an inner layer, an intermediate layer and an outer layer, the intermediate layer is at least one layer of structure, the multilayer structure comprises a high resin content layer, a middle resin content layer and a low resin content layer, the resin content in the high resin content layer is 75% -90%, the resin content in the middle resin content layer is 45% -70%, and the resin content in the low resin content layer is 10% -40%; the resin content in the multilayer structure increases gradually from the inner layer to the outer layer or decreases gradually;
the thermoplastic resin is any one of polyvinylidene fluoride, polyphenylene sulfide and polyether-ether-ketone;
the fiber material is any one of glass fiber, carbon fiber, aramid fiber or basalt fiber;
the preparation method of the fiber reinforced thermoplastic composite pipe comprises the following steps: mixing the fiber material and the thermoplastic resin in proportion, winding, heating and melting, and bonding to form a tube to complete continuous production of the fiber reinforced thermoplastic composite material tube; when polyvinylidene fluoride is selected as the thermoplastic resin, the heating and melting temperature is 160-190 ℃; when the thermoplastic resin is polyphenylene sulfide fiber, the heating and melting temperature is 270-280 ℃; when the thermoplastic resin is polyether-ether-ketone fibers, the heating and melting temperature is 320-350 ℃;
the whole fiber reinforced thermoplastic composite tube uses the same thermoplastic resin and the same fiber in the winding process;
the winding angle alpha range is 15-80 degrees; in the multilayer structure, the winding angles of the high resin content layer, the medium resin content layer, and the low resin content layer are different.
2. The method for producing a fiber-reinforced thermoplastic composite tube according to claim 1, wherein the resin content in the high resin content layer is 75% -85%, the resin content in the medium resin content layer is 50% -60%, and the resin content in the low resin content layer is 15% -25%.
3. The method of producing a fiber-reinforced thermoplastic composite tube according to claim 2, wherein the resin content in the high resin content layer is 80%, the resin content in the medium resin content layer is 55%, and the resin content in the low resin content layer is 25%.
4. A method of producing a fiber reinforced thermoplastic composite tube according to any one of claims 1 to 3, wherein the high resin content layer has a thickness of 1.25 to 8mm, the medium resin content layer has a thickness of 4 to 16mm, and the low resin content layer has a thickness of 1.25 to 8mm.
5. The method for producing a fiber-reinforced thermoplastic composite pipe according to claim 1, wherein the thermoplastic resin is polyetheretherketone, the fiber material is basalt fiber, the component ratio of the fiber material is controlled, the fiber-reinforced thermoplastic composite pipe is wound into a three-layer structure, the fiber-reinforced thermoplastic composite pipe is a multilayer structure composed of the inner layer, the intermediate layer and the outer layer, the three-layer structure comprises a high resin content layer, a medium resin content layer and a low resin content layer, the resin content in the high resin content layer is 85%, and the thickness of the high resin content layer is 4.0mm; the resin content in the middle resin content layer is 60%, and the thickness of the middle resin content layer is 10mm; the resin content in the low resin content layer was 25%, and the thickness of the low resin content layer was 4.0mm; the structure of the fiber reinforced thermoplastic composite tube is from the inner layer to the outer layer, namely the high resin content layer, the medium resin content layer and the low resin content layer;
the preparation method of the fiber reinforced thermoplastic composite pipe comprises the following steps:
starting a winding machine, mixing the fiber material and the thermoplastic resin in proportion, directly winding on a core mold, winding the fiber material and the thermoplastic resin while rotating on the core mold, and simultaneously carrying out laser heating melting on the fiber material and the thermoplastic resin in the winding process to bond the fiber material and the thermoplastic resin into a pipe;
firstly winding the low-resin-content layer, wherein the winding angle is 30 degrees, the heating temperature is 320 degrees, and the fiber winding large disc of the winding machine is wound on the core mould in a reciprocating manner, and the thickness of the low-resin-content layer is 4.0mm; winding the middle resin content layer at a winding angle of 85 degrees, heating at 340 ℃ and winding in a reciprocating manner, wherein the thickness of the middle resin content layer is 10mm; and winding the high-resin-content layer again, wherein the winding angle is 15 degrees, the heating temperature is 350 ℃, the winding is performed repeatedly, the thickness of the high-resin-content layer is 4.0mm, and the continuous production of the fiber-reinforced thermoplastic composite material pipe is completed.
6. The method of preparing a fiber reinforced thermoplastic composite tube according to claim 1, wherein the thermoplastic resin is polyvinylidene fluoride and the fiber material is glass fiber; controlling the component proportion of the fiber materials, winding the fiber reinforced thermoplastic composite material pipe into a four-layer structure, wherein the fiber reinforced thermoplastic composite material pipe is a multi-layer structure consisting of an inner layer, an intermediate layer and an outer layer, the intermediate layer is of a two-layer structure, the four-layer structure comprises a high resin content layer, a first middle resin content layer, a second middle resin content layer and a low resin content layer, the resin content in the high resin content layer is 75%, and the thickness of the high resin content layer is 1.25mm; the resin content in the first medium resin content layer is 45%, and the thickness of the first medium resin content layer is 4mm; the resin content in the second medium resin content layer is 50%, and the thickness of the second medium resin content layer is 8mm; the resin content in the low resin content layer is 10%, and the thickness of the low resin content layer is 1.25mm; the structure of the fiber reinforced thermoplastic composite tube is from the inner layer to the outer layer, namely the low resin content layer, the first middle resin content layer, the second middle resin content layer and the high resin content layer;
the preparation method of the fiber reinforced thermoplastic composite pipe comprises the following steps:
starting a winding machine, mixing the fiber material and the thermoplastic resin in proportion, directly winding on a core mold, winding the fiber material and the thermoplastic resin while rotating on the core mold, and simultaneously carrying out laser heating melting on the fiber material and the thermoplastic resin in the winding process to bond the fiber material and the thermoplastic resin into a pipe;
firstly winding the low-resin-content layer, wherein the winding angle is 85 degrees, the heating temperature is 190 ℃, and the fiber winding large disc of the winding machine is wound on the core mould in a reciprocating manner, and the thickness of the low-resin-content layer is 1.25mm; winding the first medium resin content layer again, wherein the winding angle is 75 degrees, the heating temperature is 180 ℃, and winding is performed repeatedly, and the thickness of the first medium resin content layer is 4mm; winding the second medium resin content layer again, wherein the winding angle is 30 degrees, the heating temperature is 170 ℃, and winding is performed in a reciprocating manner, and the thickness of the second medium resin content layer is 8mm; and winding the high-resin-content layer again, wherein the winding angle is 15 degrees, the heating temperature is 160 ℃, the winding is performed repeatedly, the thickness of the high-resin-content layer is 1.25mm, and the continuous production of the fiber reinforced thermoplastic composite material pipe is completed.
7. The method of producing a fiber-reinforced thermoplastic composite tube according to claim 1, wherein the thermoplastic resin is polyphenylene sulfide and the fiber material is aramid fiber; controlling the component ratio of the thermoplastic resin content to the fiber material, winding the fiber reinforced thermoplastic composite material pipe into a four-layer structure, wherein the fiber reinforced thermoplastic composite material pipe is a multi-layer structure consisting of an inner layer, an intermediate layer and an outer layer, the intermediate layer is a two-layer structure, the four-layer structure comprises a high resin content layer, a first middle resin content layer, a second middle resin content layer and a low resin content layer, the resin content in the high resin content layer is 90%, and the thickness of the high resin content layer is 8mm; the resin content in the first medium resin content layer is 55%, and the thickness of the first medium resin content layer is 16mm; the resin content in the second medium resin content layer is 65%, and the thickness of the second medium resin content layer is 4mm; the resin content in the low resin content layer is 25%, and the thickness of the low resin content layer is 8mm; the structure of the fiber reinforced thermoplastic composite tube is from the inner layer to the outer layer, namely the high resin content layer, the first middle resin content layer, the second middle resin content layer and the low resin content layer;
the preparation method of the fiber reinforced thermoplastic composite pipe comprises the following steps:
starting a winding machine, mixing the fiber material and the thermoplastic resin in proportion, directly winding on a core mold, winding the fiber material and the thermoplastic resin while rotating on the core mold, and simultaneously carrying out laser heating melting on the fiber material and the thermoplastic resin in the winding process to bond the fiber material and the thermoplastic resin into a pipe;
firstly winding the low-resin-content layer, wherein the winding angle is 85 degrees, the heating temperature is 280 ℃, and the fiber winding large disc of the winding machine is wound on the core mould in a reciprocating manner, and the thickness of the low-resin-content layer is 8mm; winding the first medium resin content layer again, wherein the winding angle is 45 degrees, the heating temperature is 270 ℃, and winding is performed repeatedly, and the thickness of the first medium resin content layer is 16mm; winding the second medium resin content layer again, wherein the winding angle is 30 degrees, the heating temperature is 270 ℃, and winding is performed in a reciprocating manner, and the thickness of the second medium resin content layer is 4mm; and winding the high-resin-content layer again, wherein the winding angle is 15 degrees, the heating temperature is 280 ℃, the winding is performed repeatedly, the thickness of the high-resin-content layer is 8mm, and the continuous production of the fiber reinforced thermoplastic composite material pipe is completed.
8. The method for producing a fiber-reinforced thermoplastic composite tube according to claim 1, wherein the fiber material is basalt fiber, the composition ratio of the fiber material is controlled, the fiber-reinforced thermoplastic composite tube is wound into a five-layer structure, the fiber-reinforced thermoplastic composite tube is a multilayer structure composed of the inner layer, the intermediate layer, and the outer layer, the intermediate layer is a three-layer structure, the five-layer structure includes a high resin content layer, a first middle resin content layer, a second middle resin content layer, a first low resin content layer, and a second low resin content layer, the resin content in the high resin content layer is 80%, and the thickness of the high resin content layer is 2mm; the resin content in the first medium resin content layer is 65%, and the thickness of the first medium resin content layer is 5mm; the resin content in the second medium resin content layer is 55%, and the thickness of the second medium resin content layer is 5mm; the resin content in the first low-resin-content layer is 25%, the thickness of the first low-resin-content layer is 2mm, the resin content in the second low-resin-content layer is 20%, and the thickness of the second low-resin-content layer is 2mm; the structure of the fiber reinforced thermoplastic composite tube from the inner layer to the outer layer is respectively the first low resin content layer, the second low resin content layer, the first medium resin content layer, the second medium resin content layer and the high resin content layer;
the preparation method of the fiber reinforced thermoplastic composite pipe comprises the following steps:
starting a winding machine, mixing the fiber material and the thermoplastic resin in proportion, directly winding on a core mold, winding the fiber material and the thermoplastic resin while rotating on the core mold, and simultaneously carrying out laser heating melting on the fiber material and the thermoplastic resin in the winding process to bond the fiber material and the thermoplastic resin into a pipe;
firstly winding the first low-resin-content layer, wherein the winding angle is 85 degrees, the heating temperature is 320 ℃, and the fiber winding large disc of the winding machine is wound on the core mould in a reciprocating manner, and the thickness of the first low-resin-content layer is 2mm; winding the second low-resin-content layer again, wherein the winding angle is 75 degrees, the heating temperature is 340 ℃, and winding is performed repeatedly, and the thickness of the second low-resin-content layer is 2mm; winding the first medium resin content layer again, wherein the winding angle is 15 degrees, the heating temperature is 340 ℃, and winding is performed in a reciprocating manner, and the thickness of the first medium resin content layer is 5mm; winding the second medium resin content layer again, wherein the winding angle is 45 degrees, the heating temperature is 340 ℃, and winding is performed in a reciprocating manner, and the thickness of the second medium resin content layer is 5mm; and winding the high-resin-content layer again, wherein the winding angle is 15 degrees, the heating temperature is 350 degrees, and the winding is performed repeatedly, wherein the thickness of the high-resin-content layer is 2mm, so that the continuous production of the fiber-reinforced thermoplastic composite material pipe is completed.
9. The method for preparing a fiber reinforced thermoplastic composite tube according to claim 1, wherein the heating mode is any one of laser heating, infrared heating and electromagnetic heating.
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| CN109827014B (en) * | 2019-02-28 | 2020-07-14 | 浙江大学 | Carbon fiber reinforced plastic electric melting pipe fitting with strain self-monitoring function |
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