CN113898798A - Internal pressure resistant fiber braided winding pultrusion composite pipe and preparation method thereof - Google Patents
Internal pressure resistant fiber braided winding pultrusion composite pipe and preparation method thereof Download PDFInfo
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- CN113898798A CN113898798A CN202111351766.0A CN202111351766A CN113898798A CN 113898798 A CN113898798 A CN 113898798A CN 202111351766 A CN202111351766 A CN 202111351766A CN 113898798 A CN113898798 A CN 113898798A
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- 239000000835 fiber Substances 0.000 title claims abstract description 105
- 238000004804 winding Methods 0.000 title claims abstract description 69
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 56
- 239000011347 resin Substances 0.000 claims abstract description 56
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 56
- 238000009941 weaving Methods 0.000 claims abstract description 51
- 238000007598 dipping method Methods 0.000 claims abstract description 33
- 239000004744 fabric Substances 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 229920002748 Basalt fiber Polymers 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 229920001225 polyester resin Polymers 0.000 claims description 5
- 239000004645 polyester resin Substances 0.000 claims description 5
- 229920005749 polyurethane resin Polymers 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000047 product Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 4
- 239000011265 semifinished product Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000012815 thermoplastic material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000005303 weighing Methods 0.000 description 1
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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
- F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/521—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement before the die
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/525—Component parts, details or accessories; Auxiliary operations
-
- 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
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention relates to the technical field of pressure-resistant pipelines, in particular to an internal pressure resistant fiber braided and wound pultrusion composite pipe which comprises the following components in sequence from inside to outside: the anti-leakage fabric comprises an anti-leakage layer, a circumferential winding layer and a fiber weaving layer, wherein the anti-leakage layer is composed of anti-leakage fibers cured by first thermosetting resin through gum dipping, and the circumferential winding layer and the fiber weaving layer are pressurized and gum dipped by second thermosetting resin and are simultaneously cured with the first thermosetting resin into an integral structure. The invention also discloses a preparation method of the internal pressure resistant fiber woven and wound pultrusion composite pipe, which comprises the steps of inner layer pre-dipping, annular winding, outer layer weaving, secondary gum dipping and curing pultrusion. According to the invention, the gaps among the anti-leakage layer, the annular winding layer and the fiber woven layer and the gaps of the fiber woven layer are effectively filled through pressurizing and dipping the second thermosetting resin, so that the three parts of the pipe body are solidified into a whole.
Description
Technical Field
The invention relates to the technical field of pressure-resistant pipelines, in particular to an internal pressure resistant fiber braided and wound pultrusion composite pipe and a preparation method thereof.
Background
The fiber reinforced thermosetting resin pipe has been widely used in various fields of pressure-resistant pipelines relating to drainage, chemical engineering and cables because of its excellent performance and designability. However, the fiber reinforced thermoplastic pipeline is still in an immature era at the present stage, has the problems of complicated production method, high product price, low ring stiffness and the like, and has no substantial technical breakthrough in the large-caliber field.
Most of pressure-resistant pipelines in the current market are made of thermoplastic materials such as PE and PP. Most of the means for enhancing the pressure resistance are reinforcing on the outer layer, such as steel wire mesh reinforced PE, fiber reinforced PP and the like, however, the thermoplastic material has low strength and needs to meet certain working pressure, the thickness of the product needs to reach certain size, and further the pressure in the aspects of production, transportation and storage is increased.
And there is no effective way to enhance the internal pressure resistance of the pipeline at present, for example, the utility model with the patent name of CN201520121276.5 as "a continuous fiber reinforced thermosetting resin composite pipe with double-angle winding structure" can not substantially solve the internal pressure resistance of the pipeline only by adjusting the winding angle of the multilayer fibers to enhance the internal pressure of the pipeline.
Therefore, the current methods for producing pipelines mainly include two methods: the winding method can increase the external pressure resistance of the pipeline, but has low production efficiency, high product price and no high market value; secondly, the production efficiency of the pipeline pultrusion production method can be effectively ensured, but the conventional materials and methods can not meet the requirement of internal pressure resistance of the pressure-resistant pipeline; thirdly, a large number of micro cracks exist in the weaving winding pultrusion method, and the cracks are communicated with each other, so that when the interior of the pipeline bears water pressure, water can leak outwards along the cracks.
Disclosure of Invention
In order to solve the problems, the invention aims to solve the problem that the pipeline produced by weaving, winding and pultrusion is weak in internal pressure resistance, and provides an internal pressure resistant fiber weaving, winding and pultrusion composite pipe.
The technical purpose of the invention is realized by the following technical scheme: the utility model provides an anti interior pressure fibre is woven winding pultrusion composite pipe, compound including from inside to outside in proper order: the anti-leakage fabric comprises an anti-leakage layer, a circumferential winding layer and a fiber weaving layer, wherein the anti-leakage layer is composed of anti-leakage fibers which are impregnated with first thermosetting resin, the circumferential winding layer is formed by winding longitudinal fibers and circumferential fibers in a staggered mode, the fiber weaving layer is composed of weaving fibers, and the circumferential winding layer and the fiber weaving layer are pressed and impregnated with second thermosetting resin and are simultaneously cured with the first thermosetting resin into an integral structure.
The first thermosetting resin is low-shrinkage thermosetting resin and is at least one of polyester resin, epoxy resin and polyurethane resin.
Further preferably, the shrinkage rate of the first thermosetting resin is smaller than the shrinkage rate of the second thermosetting resin.
Preferably, the impervious fiber is at least one of glass fiber, basalt fiber and carbon fiber.
A preparation method of an internal pressure resistant fiber braided, wound, pultruded composite tube comprises the following steps:
s1, pre-dipping the inner layer, leading out and drying the anti-seepage fiber dipped in the first thermosetting resin, and coating the anti-seepage fiber on a core mold to prepare an anti-seepage layer, wherein the first thermosetting resin is low-shrinkage thermosetting resin, the first thermosetting resin is at least one of polyester resin, epoxy resin and polyurethane resin, and the anti-seepage fiber is at least one of glass fiber, basalt fiber and carbon fiber;
s2, winding the longitudinal fibers and the circumferential fibers in the outer surface of the anti-leakage layer prepared in the step S1 in a staggered mode through a winding machine to prepare a circumferential winding layer;
s3, weaving an outer layer, weaving the weaving fibers on the outer surface of the annular winding layer prepared in the step S2 by a weaving machine, and preparing the annular winding layer to obtain a semi-finished pipe body;
s4, secondary gum dipping, wherein under the action of a gum dipping pump, secondary gum dipping is carried out in the gaps of the anti-leakage layer, the annular winding layer and the fiber weaving layer and the gaps of the anti-leakage layer, the annular winding layer and the fiber weaving layer to obtain a semi-finished pipe body;
and S5, curing and pultrusion, wherein the semi-finished pipe body in the step S4 enters a curing mould for curing and shaping, and is pultruded under the action of traction force to produce the finished pipeline.
Here, the number of winding machines in step S2 is 1 or 2.
Wherein the curing temperature in the curing mold is 165-180 ℃.
And the method further comprises the step of S6, cutting and warehousing, wherein the finished product pipeline produced in the step S5 is quantitatively cut according to the required length and warehoused.
The principle of the invention is as follows: after the first thermosetting resin is cured, the internal pressure resistance of the anti-leakage layer is enhanced, and the performance of internal and external pressures of the pipe body is enhanced by the circumferential winding layer through the longitudinal fibers and the circumferential fibers which are wound in a staggered mode; the ability of anti external pressure of fibre weaving layer reinforcing, the second thermosetting resin is effectual fills the solidification with the clearance of first thermosetting resin, hoop winding layer and fibre weaving layer and the gap of self separately to guarantee that the three part solidification of body is a whole. On one hand, the internal and external pressure resistance of the pipe body is enhanced, and on the other hand, the pipe material of the invention can be applied to a pultrusion production mode as a whole, thereby greatly improving the production efficiency.
In conclusion, the invention has the following beneficial effects: the shrinkage factor of first thermosetting resin is less than the shrinkage factor of second thermosetting resin, and deformation that first thermosetting resin is stronger than second thermosetting resin when effectively avoiding the pipeline internal pressure to strengthen leads to the pipeline to produce the crack to first thermosetting resin is located the inside physical atress principle of the joint expend with heat and contract with cold of second thermosetting resin.
Drawings
FIG. 1 is a schematic production diagram of an embodiment of the present invention
FIG. 2 is a perspective view of the present invention
FIG. 3 is a left side view of the present invention
In the figure: 1. impervious fibers; 2. a glue groove; 3. a core mold; 4. a guide; 5. longitudinal fibers; 6. a winding machine; 7. knitting machine; 8. curing the mold; 9. a tractor; 10. a cutter;
100. a leakage-resistant layer; 200. a hoop winding layer; 300. and (5) weaving the fiber layer.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description of the present invention, and do not indicate or indicate that the indicated weighing or component must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1
Specifically referring to fig. 1, a preparation method of an internal pressure resistant fiber braided and wound pultrusion composite pipe comprises the following steps:
s1, pre-dipping the inner layer, namely, guiding the prefabricated impervious fiber 1 into a dipping tank 2, a first thermosetting resin and a dipping press roller in the dipping tank 2, then guiding out, drying and coating the prefabricated impervious fiber on a core mold 3 through a guider 4 to prepare the impervious layer 100, wherein the first thermosetting resin is low-shrinkage polyester resin, and the impervious fiber 1 is glass fiber;
s2, performing hoop winding, and after finishing the coating of the anti-seepage fiber 1, winding the outer surface of the anti-seepage layer 100 by the longitudinal fiber 5 and the hoop fiber in a staggered manner by the winding machine 1 to prepare a hoop winding layer 200;
s3, weaving the outer layer, weaving the weaving fiber on the outer surface of the circumferential winding layer 200 by the weaving machine 7, and preparing the circumferential winding layer 200;
s4, secondary gum dipping, wherein a gum dipping pump is adopted to perform secondary gum dipping in the gaps among the anti-leakage layer 100, the hoop winding layer 200 and the fiber weaving layer 300 and the gaps of the fiber weaving layer and the semi-finished product of the pipe body;
s5, curing and pultrusion, wherein under the action of a tractor 9, the semi-finished pipe body enters a curing mold 8 for curing and shaping, and under the action of traction force, the semi-finished pipe body is pultruded to produce a finished pipe;
and S6, cutting and warehousing, wherein the finished product pipeline enters the cutting machine 10 according to the required length, automatically and quantitatively cutting according to the required length, and warehousing for storage.
Wherein the curing temperature in the curing mold 8 is 170 ℃.
Example 2
A preparation method of an internal pressure resistant fiber braided, wound, pultruded composite tube comprises the following steps:
s1, pre-dipping the inner layer, namely, guiding the prefabricated anti-seepage fiber 1 into a dipping tank 2, a first thermosetting resin and a dipping press roller in the dipping tank 2, then guiding out, drying and coating the core mold 3 through a guider 4 to prepare the anti-seepage layer 100, wherein the first thermosetting resin is polyurethane resin, and the anti-seepage fiber 1 is basalt fiber;
s2, performing hoop winding, and after finishing the coating of the anti-seepage fiber 1, winding the outer surface of the anti-seepage layer 100 by the longitudinal fiber 5 and the hoop fiber in a staggered manner by 2 winding machines 6 to prepare a hoop winding layer 200;
s3, weaving the outer layer, weaving the weaving fiber on the outer surface of the circumferential winding layer 200 by the weaving machine 7, and preparing the circumferential winding layer 200;
s4, secondary gum dipping, wherein a gum dipping pump is adopted to perform secondary gum dipping in the gaps among the anti-leakage layer 100, the hoop winding layer 200 and the fiber weaving layer 300 and the gaps of the fiber weaving layer and the semi-finished product of the pipe body;
s5, curing and pultrusion, wherein under the action of a tractor 9, the semi-finished pipe body enters a curing mold 8 for curing and shaping, and under the action of traction force, the semi-finished pipe body is pultruded to produce a finished pipe;
and S6, cutting and warehousing, wherein the finished product pipeline enters the cutting machine 10 according to the required length, automatically and quantitatively cutting according to the required length, and warehousing for storage.
Wherein the curing temperature in the curing mold 8 is 165 ℃.
Example 3
A preparation method of an internal pressure resistant fiber braided, wound, pultruded composite tube comprises the following steps:
s1, pre-dipping the inner layer, namely, guiding the prefabricated impervious fiber 1 into a dipping tank 2, a first thermosetting resin and a dipping press roller in the dipping tank 2, then guiding out, drying and coating the prefabricated impervious fiber on a core mold 3 through a guider 4 to prepare the impervious layer 100, wherein the first thermosetting resin is epoxy resin, and the impervious fiber 1 is carbon fiber;
s2, performing hoop winding, and after finishing the coating of the anti-seepage fiber 1, winding the outer surface of the anti-seepage layer 100 by the longitudinal fiber 5 and the hoop fiber in a staggered manner by 2 winding machines 6 to prepare a hoop winding layer 200;
s3, weaving the outer layer, weaving the weaving fiber on the outer surface of the circumferential winding layer 200 by the weaving machine 7, and preparing the circumferential winding layer 200;
s4, secondary gum dipping, wherein a gum dipping pump is adopted to perform secondary gum dipping in the gaps among the anti-leakage layer 100, the hoop winding layer 200 and the fiber weaving layer 300 and the gaps of the fiber weaving layer and the semi-finished product of the pipe body;
s5, curing and pultrusion, wherein under the action of a tractor 9, the semi-finished pipe body enters a curing mold 8 for curing and shaping, and under the action of traction force, the semi-finished pipe body is pultruded to produce a finished pipe;
and S6, cutting and warehousing, wherein the finished product pipeline enters the cutting machine 10 according to the required length, automatically and quantitatively cutting according to the required length, and warehousing for storage.
Wherein the curing temperature in the curing mold 8 is 180 ℃.
Referring specifically to fig. 2-3, the internal pressure resistant fiber-woven wound pultruded composite tubes prepared in examples 1-3 were sequentially compounded from inside to outside including: the anti-leakage fabric comprises an anti-leakage layer 100, a circumferential winding layer 200 and a fiber weaving layer 300, wherein the anti-leakage layer 100 is composed of anti-leakage fibers 1 which are impregnated with first thermosetting resin, the circumferential winding layer 200 is formed by winding longitudinal fibers 5 and circumferential fibers in a staggered mode, the fiber weaving layer 300 is composed of weaving fibers, and the circumferential winding layer 200, the fiber weaving layer 300 and the first thermosetting resin are impregnated and cured into an integral structure through second thermosetting resin. The internal pressure resistant fiber weaves, winds, pultrudes the composite pipe, and the product size, the internal diameter is 150mm, and the thickness is 4 mm.
Regarding the choice of material for the second thermosetting resin, it holds that the shrinkage rate of the first thermosetting resin is smaller than the shrinkage rate of the second thermosetting resin. The shrinkage rate of the first thermosetting resin is smaller than that of the second thermosetting resin, so that the phenomenon that the pipeline is cracked due to the fact that the first thermosetting resin deforms stronger than the second thermosetting resin when the internal pressure of the pipeline is increased is avoided, and the first thermosetting resin is located inside the second thermosetting resin and is matched with the physical stress principle of thermal expansion and cold contraction.
The inner diameter of the leakage-resistant layer 100 is 150mm and the outer diameter of the fiber woven layer 300 is 158 mm.
Results of internal pressure resistance test Table 1
| Product(s) | Resistance to internal pressure (MPa) |
| Example 1 | 0.92 |
| Example 2 | 1.57 |
| Example 3 | 1.66 |
| Braided tube commonly used in market | 0.05 |
In summary, the internal pressure resistance of the anti-leakage layer is enhanced after the first thermosetting resin is cured, and the performance of internal and external pressure of the pipe body is enhanced by the circumferential winding layer through the longitudinal fibers and the circumferential fibers which are wound in a staggered manner; the fiber braided layer enhances the capacity of resisting external pressure, and the second thermosetting resin effectively fills and solidifies the gaps of the anti-leakage layer, the annular winding layer and the fiber braided layer and the gaps of the fiber braided layer, so that the three parts of the pipe body are solidified into a whole. On one hand, the internal and external pressure resistance of the pipe body is enhanced, and on the other hand, the pipe material of the invention can be applied to a pultrusion production mode as a whole, thereby greatly improving the production efficiency.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The utility model provides an anti interior pressure fibre is woven winding pultrusion composite pipe which characterized in that, compound in proper order from inside to outside includes: the anti-leakage fabric comprises an anti-leakage layer, a circumferential winding layer and a fiber weaving layer, wherein the anti-leakage layer is composed of anti-leakage fibers solidified by impregnated first thermosetting resin, the circumferential winding layer is formed by winding longitudinal fibers and circumferential fibers in a staggered mode, the fiber weaving layer is composed of weaving fibers, and the circumferential winding layer and the fiber weaving layer are pressed by second thermosetting resin, impregnated and simultaneously solidified with the first thermosetting resin into an integral structure.
2. The internal pressure resistant fiber braided wound pultruded composite tube according to claim 1, wherein said first thermosetting resin is a low shrinkage resin and is at least one of a polyester resin, an epoxy resin, and a polyurethane resin.
3. The internal pressure resistant fiber braided wound pultruded composite tube according to claim 1 or 2, wherein the shrinkage of said first thermosetting resin is less than the shrinkage of said second thermosetting resin.
4. The internal pressure resistant fiber braided wound pultruded composite tube of claim 1, wherein said barrier fibers are at least one of glass fibers, basalt fibers, carbon fibers.
5. The preparation method of the internal pressure resistant fiber braided, wound and pultruded composite tube is characterized by comprising the following steps:
s1, pre-dipping the inner layer, leading out and drying the anti-seepage fiber dipped in the first thermosetting resin, and coating the anti-seepage fiber on a core mold to prepare an anti-seepage layer, wherein the first thermosetting resin is low-shrinkage thermosetting resin, the first thermosetting resin is at least one of polyester resin, epoxy resin and polyurethane resin, and the anti-seepage fiber is at least one of glass fiber, basalt fiber and carbon fiber;
s2, winding the longitudinal fibers and the circumferential fibers in the outer surface of the anti-leakage layer prepared in the step S1 in a staggered mode through a winding machine to prepare a circumferential winding layer;
s3, weaving an outer layer, weaving the weaving fibers on the outer surface of the annular winding layer prepared in the step S2 by a weaving machine, and preparing the annular winding layer to obtain a semi-finished pipe body;
s4, secondary gum dipping, wherein under the pressure action of a gum dipping pump, secondary gum dipping is carried out in the gaps of the anti-leakage layer, the annular winding layer and the fiber weaving layer and the gaps of the anti-leakage layer, the annular winding layer and the fiber weaving layer to obtain a semi-finished pipe body;
and S5, curing and pultrusion, wherein the semi-finished pipe body in the step S4 enters a curing mould for curing and shaping, and is pultruded under the action of traction force to produce the finished pipeline.
6. The method of claim 6, wherein the number of winding machines in step S2 is 1 or 2.
7. The method of claim 6, wherein the curing temperature in the curing mold is 165-180 ℃.
8. The method for preparing the internal pressure resistant fiber-woven and wound pultruded composite tube according to claim 6, further comprising step S6, cutting and warehousing, quantitatively cutting the finished pipeline produced in step S5 according to the required length, and warehousing for storage.
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| CN202111351766.0A CN113898798A (en) | 2021-11-16 | 2021-11-16 | Internal pressure resistant fiber braided winding pultrusion composite pipe and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114851611A (en) * | 2022-04-02 | 2022-08-05 | 安徽盛世百川农林科技发展有限公司 | Method for processing bioengineering composite pipe using tea seed shell as raw material |
| CN115418077A (en) * | 2022-09-16 | 2022-12-02 | 西安永兴科技发展有限公司 | Composite material for electrified railway insulation clamping plate and preparation method thereof |
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|---|---|---|---|---|
| CN2142912Y (en) * | 1992-10-20 | 1993-09-29 | 温州市海螺技术研究所 | Fiber-reinforced draw-extrude plastic pipe |
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| CN114851611B (en) * | 2022-04-02 | 2023-10-13 | 安徽盛世百川农林科技发展有限公司 | Processing method of bioengineering composite pipe with tea seed shells as raw material |
| CN115418077A (en) * | 2022-09-16 | 2022-12-02 | 西安永兴科技发展有限公司 | Composite material for electrified railway insulation clamping plate and preparation method thereof |
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