CN111457167A - Thermoplastic prepreg coiled pipe reinforced composite pipe and manufacturing method and manufacturing equipment thereof - Google Patents
Thermoplastic prepreg coiled pipe reinforced composite pipe and manufacturing method and manufacturing equipment thereof Download PDFInfo
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- CN111457167A CN111457167A CN201910055128.0A CN201910055128A CN111457167A CN 111457167 A CN111457167 A CN 111457167A CN 201910055128 A CN201910055128 A CN 201910055128A CN 111457167 A CN111457167 A CN 111457167A
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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
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to the field of loose or adhered fibrous material reinforced high molecular compounds, in particular to a thermoplastic prepreg coiled pipe reinforced composite pipe and a manufacturing method thereof. The utility model provides a compound pipe of thermoplasticity preimpregnation board reeled pipe reinforcing, includes compound pipe body (1), characterized by: the composite pipe body (1) consists of a thermoplastic plastic inner layer pipe (11), a thermoplastic continuous fiber bidirectional prepreg coiled pipe reinforced core layer pipe (12) and a thermoplastic surface layer pipe (13); the thermoplastic continuous fiber bidirectional prepreg board is formed by manufacturing two layers of mutually oblique bidirectional fiber prepreg tapes by a thermoplastic continuous fiber unidirectional prepreg tape through a tape laying machine, then performing multilayer overlapping by the tape laying machine, and heating and fusing. The invention has simple structure, convenient manufacture, strong adaptability and high mechanical performance.
Description
Technical Field
The invention relates to the field of loose or adhered fibrous material reinforced high molecular compounds, in particular to a thermoplastic prepreg coiled pipe reinforced composite pipe, a manufacturing method and manufacturing equipment thereof.
Background
The continuous glass fiber reinforced thermoplastic plastic composite pipe has the advantages of high strength, thin wall, light weight, corrosion resistance, long service life and the like, is widely applied to municipal water diversion and water supply, heat power pipe networks, oil field gathering and transportation pipe networks, chemical pipe networks, natural gas conveying pipe networks, powder slurry conveying pipe networks and the like, and generally adopts the mode that a film type thermoplastic glass fiber prepreg tape with the thickness of 0.3-0.4 mm is wound and heated at the same time by a winding disc rotating method or is heated in an oven after concentrated winding, and is respectively wound on an inner layer pipe in a multi-layer manner according to different pipe diameters of 80-800 mm and the pressure of 1.0-16 MPa to form a film type thermoplastic glass fiber prepreg tape reinforcing layer with 4-50 layers. The film type multi-layer winding method has the following problems:
1. along with the increase of the caliber of the pipeline or the increase of the pressure, the number of layers of the required winding prepreg tape is increased to 20-50 layers or more, 20-50 or more rotary winding disks are needed for tape compounding, the production process is complex, excessive machines and overlong production lines are not well controlled, and the product rate of the produced pipe is low;
2. during the winding process of the film-type prepreg tapes respectively wound at multiple layers, the quality of a reinforcing layer and the mechanical property of a composite pipe are affected by uneven tension and angle difference of each layer;
3. the film-type prepreg tapes respectively wound at multiple layers often cause overall peeling or local cracking between the reinforcing layer layers to influence the overall quality of the pipe due to uneven heating and hot melting temperature or no position;
4. the film-wound prepreg tape reinforcing layers are respectively heated and wound in multiple layers, the film-wound prepreg tape reinforcing layers are fully communicated with the air in an open mode, heat loss is large, energy waste is large, and the production electricity cost is high;
5. multilayer respectively heats winding film formula preimpregnation area enhancement layer because the restriction of winding dish, can't realize the winding of big width size preimpregnation area, especially the pipe diameter is greater than the pipeline more than 800mm can't realize being close to 55 best winding angle, seriously influences the anti axial stress of pipeline.
Disclosure of Invention
The invention discloses a thermoplastic prepreg coiled pipe reinforced composite pipe, a manufacturing method thereof and manufacturing equipment thereof, aiming at overcoming the defects of the prior art and providing a pipe fitting with simple structure, convenient manufacture, strong adaptability and high mechanical property.
The invention achieves the purpose by the following technical scheme:
the utility model provides a compound pipe of thermoplasticity preimpregnation board coil pipe reinforcing, includes compound pipe body, characterized by: the composite pipe body consists of a thermoplastic plastic inner layer pipe, a thermoplastic continuous fiber bidirectional prepreg coiled pipe reinforced core layer pipe and a thermoplastic surface layer pipe;
the thermoplastic continuous fiber bidirectional prepreg board is formed by manufacturing two layers of mutually oblique bidirectional fiber prepreg tapes by a thermoplastic continuous fiber unidirectional prepreg tape through a tape laying machine, then performing multilayer overlapping by the tape laying machine, and heating and fusing;
the thermoplastic continuous fiber bidirectional prepreg coiled pipe is formed by heating the thermoplastic continuous fiber bidirectional prepreg to a molten state, then pasting the thermoplastic continuous fiber bidirectional prepreg on the outer side surface of a thermoplastic plastic inner-layer pipe with a molten surface layer according to 55-degree curling, and lapping and fusing the inclined surfaces of a coil opening.
The manufacturing method of the thermoplastic prepreg coiled pipe reinforced composite pipe is characterized by comprising the following steps of: the method is implemented in sequence according to the following steps:
① calculating the thickness of the plate according to the diameter and pressure of the pipe;
② fusing the 0-degree thermoplastic continuous fiber prepreg tape by a tape laying machine to obtain a thermoplastic continuous fiber 0-90-degree double-layer bidirectional prepreg tape;
③ preparing inner layer thermoplastic tube;
④ according to the thickness of the plate, fusing 0-90 degree double-layer bidirectional prepreg tape into bevel plate by tape laying machine;
⑤ heating the bevel board to molten state by oven, and adhering to the surface of the inner plastic pipe with molten surface at an angle close to 55 deg;
⑥, rolling the inner layer pipe while curling the bevel edge continuous fiber bidirectional prepreg plate, and keeping the bevel edges at the front and rear ends of the plate in neat and tight lap joint to form a reinforced reel pipe;
⑦ preparing an outer thermoplastic surface layer tube, coating and fusing on the outer surface of the reinforced rolling tube with the surface layer in a melting state;
⑧ cooling naturally and shaping to obtain the thermoplastic continuous fiber bidirectional prepreg coiled pipe reinforced composite pipe.
The fiber refers to glass fiber and carbon fiber.
The thermoplastic material refers to PP, PE, PA, PVC and the like.
The continuous fiber prepreg tape is a film with the thickness of 0.3-0.5 mm produced by a thermoplastic material in a molten state through a pre-dipping method.
The thermoplastic continuous fiber bidirectional prepreg board is a board which is formed by uniformly cold laying multi-layer prepreg tapes in a layering manner at 0-90 degrees under the action of a tape laying machine, and then intensively drying, heating, extruding and compacting.
The mass content of the continuous fibers of the prepreg tape or the prepreg board is 60-70%.
The optimal winding angle generally refers to an angle between 54 and 55 degrees in the production axis direction of the pipe.
The manufacturing equipment used in the manufacturing method of the thermoplastic prepreg coiled pipe reinforced composite pipe is characterized in that:
an inner pipe wall cooler is arranged at the rearmost end of the production line;
the front end of the pipe wall cooler is provided with an inner layer pipe sleeve type rotary die of which the side surface is connected with an extruder;
the front end of the rotary die is provided with an inner layer tube vacuum sizing cooling box with a rotary sizing sleeve;
a multilayer tape laying extrusion plate making machine is arranged in the front inner side direction of the inner layer pipe vacuum sizing cooling box;
an outer layer pipe rotating die of which the integrally movable side surface is connected with an extruder is arranged in front of the multilayer tape laying extrusion plate making machine;
a cold air cooler is arranged in front of the outer layer pipe rotating mould;
a spray cooling water tank is arranged in front of the cold air cooler;
a rotary tractor is arranged in front of the spray cooling water tank;
a cutting machine is arranged in front of the rotary tractor;
a pipe collecting table is arranged in front of the cutting machine.
The invention adopts the method that the thick plate type material and the primary reelpipe form the reinforcing layer to replace the thin film type material and the multilayer winding form the reinforcing layer to manufacture the composite pipe, and has the following effects:
1. the large-thickness plate reinforcing layer is easy to manufacture, the interlayer is compact, and the product quality and the strength are high;
2. the board is easy to manufacture, the production equipment components are few, the investment capital is low, and the manufacturing cost is low;
3. the wide-plate pipe coiling can be realized, the requirement of the optimal winding angle is met, and the axial stress resistance of the pipe is greatly improved.
4. The pipe production line is simple, the process flow is simple, and the pipe yield is high.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a manufacturing apparatus used in the manufacture of the present invention.
Detailed Description
The invention is further illustrated by the following specific examples.
Example 1
A thermoplastic prepreg coiled pipe reinforced composite pipe comprises a composite pipe body 1, as shown in figure 1, the concrete structure is as follows: the composite pipe body 1 consists of a thermoplastic plastic inner layer pipe 11, a thermoplastic continuous fiber bidirectional prepreg coiled pipe reinforced core layer pipe 12 and a thermoplastic surface layer pipe 13;
the thermoplastic continuous fiber bidirectional prepreg board is formed by manufacturing two layers of mutually oblique bidirectional fiber prepreg tapes by a thermoplastic continuous fiber unidirectional prepreg tape through a tape laying machine, then performing multilayer overlapping by the tape laying machine, and heating and fusing;
the thermoplastic continuous fiber bidirectional prepreg coiled pipe is formed by heating the thermoplastic continuous fiber bidirectional prepreg to a molten state, then pasting the thermoplastic continuous fiber bidirectional prepreg on the outer side surface of a thermoplastic plastic inner-layer pipe 11 with a molten surface layer according to 55-degree curling, and lapping and fusing the inclined surfaces of a coil opening.
In this example, the following steps were performed in sequence:
① calculating the thickness of the plate according to the diameter and pressure of the pipe;
② fusing the 0-degree thermoplastic continuous fiber prepreg tape by a tape laying machine to obtain a thermoplastic continuous fiber 0-90-degree double-layer bidirectional prepreg tape;
③ preparing inner layer thermoplastic tube;
④ according to the thickness of the plate, fusing 0-90 degree double-layer bidirectional prepreg tape into bevel plate by tape laying machine;
⑤ heating the bevel board to molten state by oven, and adhering to the surface of the inner plastic pipe with molten surface at an angle close to 55 deg;
⑥, rolling the inner layer pipe while curling the bevel edge continuous fiber bidirectional prepreg plate, and keeping the bevel edges at the front and rear ends of the plate in neat and tight lap joint to form a reinforced reel pipe;
⑦ preparing an outer thermoplastic surface layer tube, coating and fusing on the outer surface of the reinforced rolling tube with the surface layer in a melting state;
⑧ cooling naturally and shaping to obtain the thermoplastic continuous fiber bidirectional prepreg coiled pipe reinforced composite pipe.
The fiber refers to glass fiber and carbon fiber.
The thermoplastic material refers to PP, PE, PA, PVC and the like.
The continuous fiber prepreg tape is a film with the thickness of 0.3-0.5 mm produced by a thermoplastic material in a molten state through a pre-dipping method.
The thermoplastic continuous fiber bidirectional prepreg board is a board which is formed by uniformly cold laying multi-layer prepreg tapes in a layering manner at 0-90 degrees under the action of a tape laying machine, and then intensively drying, heating, extruding and compacting.
The mass content of the continuous fibers of the prepreg tape or the prepreg board is 60-70%.
The optimal winding angle generally refers to an angle between 54 and 55 degrees in the production axis direction of the pipe.
As shown in fig. 2, the manufacturing apparatus used in the manufacturing method of the present embodiment has a specific structure that:
an inner pipe wall cooler 201 is arranged at the rearmost end of the production line;
an inner layer pipe sleeve type rotary die 202 of which the side surface is connected with an extruder is arranged at the front end of the pipe wall cooler 201;
an inner layer pipe vacuum sizing cooling box 203 with a rotary sizing sleeve is arranged at the front end of the rotary die 202;
a multilayer tape laying extrusion plate making machine 204 is arranged in the 55-degree direction of the front inner side of the inner-layer pipe vacuum sizing cooling box 203;
an outer layer pipe rotating die 205 with an integrally movable side surface connected with an extruder is arranged in front of the multilayer tape laying extrusion plate making machine 204;
a cold air cooler 206 is arranged in front of the outer layer pipe rotary die 205;
a spray cooling water tank 207 is arranged in front of the cold air cooler 206;
a rotary tractor 208 is arranged in front of the spray cooling water tank 207;
a cutter 209 is provided in front of the rotary tractor 208;
a pipe collecting table 210 is provided in front of the cutter 209.
Claims (3)
1. The utility model provides a compound pipe of thermoplasticity preimpregnation board reeled pipe reinforcing, includes compound pipe body (1), characterized by: the composite pipe body (1) consists of a thermoplastic plastic inner layer pipe (11), a thermoplastic continuous fiber bidirectional prepreg coiled pipe reinforced core layer pipe (12) and a thermoplastic surface layer pipe (13);
the thermoplastic continuous fiber bidirectional prepreg board is formed by manufacturing two layers of mutually oblique bidirectional fiber prepreg tapes by a thermoplastic continuous fiber unidirectional prepreg tape through a tape laying machine, then performing multilayer overlapping by the tape laying machine, and heating and fusing;
the thermoplastic continuous fiber bidirectional prepreg coiled pipe is formed by heating the thermoplastic continuous fiber bidirectional prepreg to a molten state, then pasting the thermoplastic continuous fiber bidirectional prepreg on the outer side surface of a thermoplastic plastic inner-layer pipe (11) with a molten surface layer according to 55-degree curling, and lapping and fusing the inclined surfaces of a coil opening.
2. The method of manufacturing the thermoplastic prepreg coiled pipe reinforced composite pipe according to claim 1, wherein the method comprises the following steps: the method is implemented in sequence according to the following steps:
① calculating the thickness of the plate according to the diameter and pressure of the pipe;
② fusing the 0-degree thermoplastic continuous fiber prepreg tape by a tape laying machine to obtain a thermoplastic continuous fiber 0-90-degree double-layer bidirectional prepreg tape;
③ preparing inner layer thermoplastic tube;
④ according to the thickness of the plate, fusing 0-90 degree double-layer bidirectional prepreg tape into bevel plate by tape laying machine;
⑤ heating the bevel board to molten state by oven, and adhering to the surface of the inner plastic pipe with molten surface at an angle close to 55 deg;
⑥, rolling the inner layer pipe while curling the bevel edge continuous fiber bidirectional prepreg plate, and keeping the bevel edges at the front and rear ends of the plate in neat and tight lap joint to form a reinforced reel pipe;
⑦ preparing an outer thermoplastic surface layer tube, coating and fusing on the outer surface of the reinforced rolling tube with the surface layer in a melting state;
⑧ cooling naturally and shaping to obtain the thermoplastic continuous fiber bidirectional prepreg coiled pipe reinforced composite pipe.
3. The manufacturing apparatus for the method of manufacturing a thermoplastic prepreg roll-up tube-reinforced composite tube as set forth in claim 2, wherein:
an inner-layer pipe wall cooler (201) is arranged at the rearmost end of the production line;
an inner layer pipe sleeve type rotary die (202) with a side surface connected with an extruder is arranged at the front end of the pipe wall cooler (201);
an inner layer pipe vacuum sizing cooling box (203) with a rotary sizing sleeve is arranged at the front end of the rotary die (202);
a multilayer tape laying extrusion plate making machine (204) is arranged in the 55-degree direction of the front inner side of the inner-layer pipe vacuum sizing cooling box (203);
an outer layer pipe rotating die (205) with an integrally movable side surface connected with an extruder is arranged in front of the multilayer tape laying extrusion plate making machine (204);
a cold air cooler (206) is arranged in front of the outer-layer pipe rotating die (205);
a spray cooling water tank (207) is arranged in front of the cold air cooler (206);
a rotary tractor (208) is arranged in front of the spray cooling water tank (207);
a cutter (209) is arranged in front of the rotary tractor (208);
a pipe collecting table (210) is arranged in front of the cutting machine (209).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910055128.0A CN111457167A (en) | 2019-01-21 | 2019-01-21 | Thermoplastic prepreg coiled pipe reinforced composite pipe and manufacturing method and manufacturing equipment thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910055128.0A CN111457167A (en) | 2019-01-21 | 2019-01-21 | Thermoplastic prepreg coiled pipe reinforced composite pipe and manufacturing method and manufacturing equipment thereof |
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| CN111457167A true CN111457167A (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910055128.0A Pending CN111457167A (en) | 2019-01-21 | 2019-01-21 | Thermoplastic prepreg coiled pipe reinforced composite pipe and manufacturing method and manufacturing equipment thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113063042A (en) * | 2021-04-12 | 2021-07-02 | 上海英泰塑胶股份有限公司 | Continuous fiber preimpregnation sheet core layer winding reinforcing composite pipeline system |
| CN114645976A (en) * | 2020-12-21 | 2022-06-21 | 中国石油化工股份有限公司 | Fiber prepreg tape reinforced composite pipe and processing method thereof |
-
2019
- 2019-01-21 CN CN201910055128.0A patent/CN111457167A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645976A (en) * | 2020-12-21 | 2022-06-21 | 中国石油化工股份有限公司 | Fiber prepreg tape reinforced composite pipe and processing method thereof |
| CN113063042A (en) * | 2021-04-12 | 2021-07-02 | 上海英泰塑胶股份有限公司 | Continuous fiber preimpregnation sheet core layer winding reinforcing composite pipeline system |
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Application publication date: 20200728 |
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| WD01 | Invention patent application deemed withdrawn after publication |