CN116817036A - Fiber reinforced composite pipe and preparation method thereof - Google Patents
Fiber reinforced composite pipe and preparation method thereof Download PDFInfo
- Publication number
- CN116817036A CN116817036A CN202310782920.2A CN202310782920A CN116817036A CN 116817036 A CN116817036 A CN 116817036A CN 202310782920 A CN202310782920 A CN 202310782920A CN 116817036 A CN116817036 A CN 116817036A
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- Prior art keywords
- fiber
- lap joint
- reinforced composite
- spiral
- pipe
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- 239000003733 fiber-reinforced composite Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims description 77
- 239000004698 Polyethylene Substances 0.000 claims description 29
- 238000007789 sealing Methods 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- -1 polyethylene Polymers 0.000 claims description 12
- 229920000573 polyethylene Polymers 0.000 claims description 12
- 229910052755 nonmetal Inorganic materials 0.000 claims description 11
- 229920002748 Basalt fiber Polymers 0.000 claims description 10
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 10
- 239000004917 carbon fiber Substances 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000012768 molten material Substances 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims 1
- 239000012783 reinforcing fiber Substances 0.000 abstract description 16
- 239000002994 raw material Substances 0.000 abstract description 6
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 7
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/581—Winding and joining, e.g. winding spirally helically using sheets or strips consisting principally of plastics material
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/60—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
-
- 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
-
- 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
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The application relates to a fiber reinforced composite pipe and a preparation method thereof, and relates to the technical field of pipes. The application adopts the spiral reinforcing fiber to reinforce the pipe body, so that the performance of the drain pipe is greatly improved, the raw materials are greatly saved, and the production cost is greatly reduced.
Description
Technical Field
The application relates to the technical field of pipes, in particular to a fiber reinforced composite pipe and a preparation method thereof.
Background
The drain pipe mainly bears the tasks of draining rainwater, sewage, farmland drainage and irrigation and the like, is divided into a plastic drain pipe, a concrete pipe and a reinforced concrete pipe, and has the characteristics of low cost and corrosion resistance to most chemicals for life and industry, so that the drain pipe is widely used. Most of plastic drain pipes in the market at present are made of PE as a main material, and PE is a widely used material of drain pipes, and has many advantages such as simple construction and maintenance, long service life, resistance to corrosion of most chemicals for life and industry, etc., but has a disadvantage that PE resin has low elastic modulus, and more materials must be consumed for the drain pipes to have high ring stiffness. The traditional mode adopts a certain structural form as a main means for increasing the rigidity of the ring, but the water draining pipe is heavy and has high production cost. In addition, the steel skeleton or steel wires are used for increasing the ring rigidity of the drain pipe through various structures, so that a lot of raw materials can be saved, but steel is easy to rust, and once the whole structure of the pipe is corroded, the structure of the whole pipe is collapsed, so that the reinforced pipe has great hidden trouble.
Disclosure of Invention
The application provides a fiber reinforced composite pipe and a preparation method thereof, which are used for solving the technical problems of low tensile strength, short service life, low use reliability and the like of the existing drain pipe.
In a first aspect, the application provides a fiber reinforced composite pipe, which is manufactured by adopting a thermal state forming process, and comprises reinforcing fibers and at least two pipe bodies, wherein a lap joint structure is arranged between every two adjacent pipe bodies, the lap joint structure is spirally arranged, the reinforcing fibers are spirally arranged in the lap joint structure in a penetrating way, the reinforcing fibers comprise first fiber ropes and second fiber ropes, and the first fiber ropes and the second fiber ropes are respectively arranged in gaps of the lap joint structure in a penetrating way.
Further, the gaps of the lap joint structure are filled with adhesive, the first fiber ropes are located on the outer sides of the adhesive, and the second fiber ropes are located on the inner sides of the adhesive.
Further, a top cover layer is arranged at the gap opening of the lap joint structure, and the first fiber ropes are positioned on the inner side of the top cover layer.
Further, the first fiber rope and the second fiber rope are made of carbon fibers, basalt fibers or ultra-high molecular weight polyethylene fibers.
Further, the overlap joint structure includes first spiral flange and second spiral flange, first spiral flange and second spiral flange set up respectively in the both ends of body, and the inboard of first spiral flange is equipped with the overlap joint groove, the inboard of second spiral flange be equipped with the overlap joint piece of overlap joint groove adaptation.
Further, the first spiral flange and the second spiral flange are hollow structures.
Further, the pipe joint further comprises a sealing layer, wherein the sealing layer is arranged on the inner wall of the pipe body and seals the inner wall of the lap joint structure.
Further, the sealing layer includes a sealing portion provided at an inner wall of the pipe body and a filling portion provided at an outer side of the sealing portion and filled in a gap between the overlap block and the overlap groove.
Further, the pipe body is a PE pipe.
In a second aspect, the present application provides a method for preparing a fiber reinforced composite tube according to any one of the first aspects, the method comprising the steps of:
obtaining a strip-shaped section bar;
coating a first molten material on the bottom and the lap joint of the strip-shaped section bar, and then carrying out rotary winding to obtain a spiral pipe which is lapped back and forth;
and coating a second melting material and two nonmetal fiber ropes on the lap joint of the spiral pipes which are overlapped back and forth, and then coating a third melting material for capping to obtain the fiber reinforced composite pipe.
Further, the step of obtaining the strip profile comprises:
adding polyethylene material into an extruder, and extruding through a die head to obtain polyethylene melt;
and shaping the polyethylene melt by adopting a shaping die to obtain the strip-shaped section.
Further, the first melting material, the second melting material and the third melting material are all polyethylene melting materials, and the nonmetal fiber rope comprises at least one of carbon fiber, basalt fiber and super-molecular weight polyethylene fiber.
Compared with the prior art, the technical scheme provided by the embodiment of the application has at least the following advantages:
the application adopts the spiral reinforcing fiber to reinforce the pipe body, so that the performance of the drain pipe is greatly improved, the raw materials are greatly saved, and the production cost is greatly reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram of an embodiment of the present application;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic view of a belt profile in one embodiment of the present application;
FIG. 4 is a schematic flow chart of a method for preparing a fiber reinforced composite tube according to the present application;
FIG. 5 is a second schematic flow chart of the method for preparing a fiber reinforced composite tube according to the present application;
in the figure: 1-reinforcing fibers; 2-a tube body; 3-lap joint structure; 4-a first fiber rope; 5-a second fiber rope; 6-bonding material; 7-capping layer; 8-a first helical flange; 9-a second helical flange; 10-sealing part; 11-a filling part; 12-band-shaped section bar.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Unless otherwise specifically indicated, the various raw materials, reagents, instruments, equipment and the like used in the present application are commercially available or may be prepared by existing methods.
In a first aspect, the present application provides a fiber reinforced composite pipe, where the fiber reinforced composite pipe is made by adopting a thermal state forming process, as shown in fig. 1-3, and includes a reinforcing fiber 1 and a plurality of pipe bodies 2, where the pipe bodies 2 are PE pipes, a lap joint structure 3 is disposed between two adjacent pipe bodies 2, the lap joint structure 3 is spirally disposed, the reinforcing fiber 1 is spirally threaded in the lap joint structure 3, the reinforcing fiber includes a first fiber rope 4 and a second fiber rope 5, and the first fiber rope 4 and the second fiber rope 5 are both threaded in gaps of the lap joint structure. The application adopts the spiral reinforcing fiber 1 to reinforce the pipe body 2, so that the performance of the drain pipe is greatly improved, the raw materials are greatly saved, the production cost is greatly reduced, and the service life and the use reliability of the drain pipe are improved.
As shown in fig. 2, in particular, the overlap structure 3 includes a first spiral flange 8 and a second spiral flange 9, and the first spiral flange 8 and the second spiral flange 9 are hollow structures. The first spiral flange 8 and the second spiral flange 9 are respectively arranged at two ends of the pipe body 2, the inner side of the first spiral flange 8 is provided with a lap joint groove, and the inner side of the second spiral flange 9 is provided with a lap joint block matched with the lap joint groove. The two adjacent pipe bodies 2 are connected through the first spiral flange 8 and the second spiral flange 9, and the lap joint groove of the first spiral flange 8 is matched with the lap joint block of the second spiral flange 9, so that the connection stability of the two pipe bodies 2 is improved.
As shown in fig. 3, the pipe body 2 is formed by curling a strip-shaped section bar 12, the first spiral flange 8 and the second spiral flange 9 are preset on the strip-shaped section bar 12, and after a plurality of pipe bodies 2 are connected, a plurality of lap joint structures 3 are spirally arranged on the surface of the drain pipe.
The drain pipe also comprises a sealing layer which is arranged on the inner wall of the pipe body 2 and seals the inner wall of the lap joint structure 3. The arrangement of the sealing layer enables the inside of the drain pipe to form a complete whole without connecting joints, thereby avoiding the problem of water leakage.
Specifically, the sealing layer comprises a sealing part 10 and a filling part 11, the sealing part 10 is arranged on the inner wall of the pipe body 2, the filling part 11 is arranged on the outer side of the sealing part 10 and is filled in a gap between the overlap block and the overlap groove, and the sealing effect of the overlap block and the overlap groove is improved.
As shown in fig. 2, in the present embodiment, the reinforcing fiber 1 includes a first fiber rope 4 and a second fiber rope 5, and the first fiber rope 4 and the second fiber rope 5 are each provided in a gap of the lap joint structure 3 in a penetrating manner. The first fiber rope 4 and the second fiber rope 5 are positioned outside the lap joint block and are positioned in the gap between the first spiral flange 8 and the second spiral flange 9, so that the strength of the drain pipe is improved.
Preferably, the gap between the first spiral flange 8 and the second spiral flange 9 is filled with the adhesive 6, the first fiber strands 4 are located outside the adhesive 6, and the second fiber strands 5 are located inside the adhesive 6. The gap opening between the first spiral flange 8 and the second spiral flange 9 is provided with a capping layer 7, said first fibre rope 4 being located inside the capping layer 7. The capping layer 7 seals the gap between the first spiral flange 8 and the second spiral flange 9.
The first fiber ropes 4 and the second fiber ropes 5 are non-metal fiber ropes, the non-metal fiber ropes are made of carbon fibers, basalt fibers or ultra-high molecular weight polyethylene fibers, the tensile strength of the carbon fibers, the basalt fibers and the ultra-high molecular weight polyethylene fibers is several times that of steel with the same volume, the tensile strength of the carbon fibers, the basalt fibers and the ultra-high molecular weight polyethylene fibers is hundreds of times higher than that of high-density PE with the same volume, and the non-metal fiber ropes are mutually matched with PE pipes, so that the strength of a drain pipe is greatly enhanced.
In a second aspect, based on one general inventive concept, the present application provides a method for preparing the fiber reinforced composite tube according to any one of the first aspects, as shown in fig. 4 and 5, comprising the steps of:
obtaining a strip-shaped section bar;
coating a first molten material on the bottom and the lap joint of the strip-shaped section bar, and then carrying out rotary winding to obtain a spiral pipe which is lapped back and forth;
and coating a second melting material and two nonmetal fiber ropes on the lap joint of the spiral pipes which are overlapped back and forth, and then coating a third melting material for capping to obtain the fiber reinforced composite pipe.
According to the preparation method of the fiber reinforced composite pipe, provided by the embodiment of the application, the bottom of the section bar adopts a thermal state forming process, so that the inner layer of the pipe forms a complete whole, no connecting seam exists, water leakage is avoided, and the service life and the use reliability of the drain pipe are obviously improved.
In some embodiments, the above preparation method may include the following steps: extruding PE material through a die head by a first extruder, shaping by a shaping die to form a strip-shaped section 12, and extruding the melted PE material by a second extruder through a co-extrusion die connected with the second extruder, wherein the second extruder coats molten PE material on the bottom and lap joint of the strip-shaped section 12; the ribbon-shaped section 12 is curled into a spiral pipe which is lapped back and forth through a mechanism rotating around the center, then a third extruder is used for extruding molten material to be coated on the lap joint of the spiral pipe, the spiral pipe is stuck into a whole, two nonmetallic fiber ropes are laid at the lap joint to strengthen the strength of the spiral pipe, and then a fourth extruder is used for extruding a capping layer 7 to cover the nonmetallic fiber ropes.
In some embodiments, the first molten material, the second molten material and the third molten material are all polyethylene molten materials, and the material of the nonmetallic fiber rope comprises at least one of carbon fiber, basalt fiber and super-molecular weight polyethylene fiber.
The application will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. The experimental procedures, which are not specified in the following examples, are generally determined according to national standards. If the corresponding national standard does not exist, the method is carried out according to the general international standard, the conventional condition or the condition recommended by the manufacturer.
Example 1
The embodiment provides a fiber reinforced composite pipe, the fiber reinforced composite pipe adopts thermal state shaping technology to make, including reinforcing fiber 1 and a plurality of body 2, body 2 is the PE pipe, is equipped with overlap joint structure 3 between two adjacent body 2, overlap joint structure 3 is the spiral setting, reinforcing fiber 1 spiral wears to establish in overlap joint structure 3, reinforcing fiber includes first fibre rope 4 and second fibre rope 5, first fibre rope 4 and second fibre rope 5 are all worn to establish in overlap joint structure's clearance. The application adopts the spiral reinforcing fiber 1 to reinforce the pipe body 2, so that the performance of the drain pipe is greatly improved, the raw materials are greatly saved, the production cost is greatly reduced, and the service life and the use reliability of the drain pipe are improved.
As shown in fig. 2, in particular, the overlap structure 3 includes a first spiral flange 8 and a second spiral flange 9, and the first spiral flange 8 and the second spiral flange 9 are hollow structures. The first spiral flange 8 and the second spiral flange 9 are respectively arranged at two ends of the pipe body 2, the inner side of the first spiral flange 8 is provided with a lap joint groove, and the inner side of the second spiral flange 9 is provided with a lap joint block matched with the lap joint groove. The two adjacent pipe bodies 2 are connected through the first spiral flange 8 and the second spiral flange 9, and the lap joint groove of the first spiral flange 8 is matched with the lap joint block of the second spiral flange 9, so that the connection stability of the two pipe bodies 2 is improved.
As shown in fig. 3, the pipe body 2 is formed by curling a strip-shaped section bar 12, the first spiral flange 8 and the second spiral flange 9 are preset on the strip-shaped section bar 12, and after a plurality of pipe bodies 2 are connected, a plurality of lap joint structures 3 are spirally arranged on the surface of the drain pipe.
The drain pipe also comprises a sealing layer which is arranged on the inner wall of the pipe body 2 and seals the inner wall of the lap joint structure 3. The arrangement of the sealing layer enables the inside of the drain pipe to form a complete whole without connecting joints, thereby avoiding the problem of water leakage.
Specifically, the sealing layer comprises a sealing part 10 and a filling part 11, the sealing part 10 is arranged on the inner wall of the pipe body 2, the filling part 11 is arranged on the outer side of the sealing part 10 and is filled in a gap between the overlap block and the overlap groove, and the sealing effect of the overlap block and the overlap groove is improved.
As shown in fig. 2, in the present embodiment, the reinforcing fiber 1 includes a first fiber rope 4 and a second fiber rope 5, and the first fiber rope 4 and the second fiber rope 5 are each provided in a gap of the lap joint structure 3 in a penetrating manner. The first fiber rope 4 and the second fiber rope 5 are positioned outside the lap joint block and are positioned in the gap between the first spiral flange 8 and the second spiral flange 9, so that the strength of the drain pipe is improved.
Preferably, the gap between the first spiral flange 8 and the second spiral flange 9 is filled with the adhesive 6, the first fiber strands 4 are located outside the adhesive 6, and the second fiber strands 5 are located inside the adhesive 6. The gap opening between the first spiral flange 8 and the second spiral flange 9 is provided with a capping layer 7, said first fibre rope 4 being located inside the capping layer 7. The capping layer 7 seals the gap between the first spiral flange 8 and the second spiral flange 9.
The first fiber ropes 4 and the second fiber ropes 5 are non-metal fiber ropes, the non-metal fiber ropes are made of carbon fibers, basalt fibers or ultra-high molecular weight polyethylene fibers, the tensile strength of the carbon fibers, the basalt fibers and the ultra-high molecular weight polyethylene fibers is several times that of steel with the same volume, the tensile strength of the carbon fibers, the basalt fibers and the ultra-high molecular weight polyethylene fibers is hundreds of times higher than that of high-density PE with the same volume, and the non-metal fiber ropes are mutually matched with PE pipes, so that the strength of a drain pipe is greatly enhanced.
As shown in fig. 4 and 5, the production method of the fiber reinforced composite pipe comprises the following steps: extruding PE material through a die head by a first extruder, shaping by a shaping die to form a strip-shaped section 12, and extruding the melted PE material by a second extruder through a co-extrusion die connected with the second extruder, wherein the second extruder coats molten PE material on the bottom and lap joint of the strip-shaped section 12; the ribbon-shaped section 12 is curled into a spiral pipe which is lapped back and forth through a mechanism rotating around the center, then a third extruder is used for extruding molten material to be coated on the lap joint of the spiral pipe, the spiral pipe is stuck into a whole, two nonmetallic fiber ropes are laid at the lap joint to strengthen the strength of the spiral pipe, and then a fourth extruder is used for extruding a capping layer 7 to cover the nonmetallic fiber ropes.
Through detection, compared with a high-density PE drain pipe with the same volume, the tensile strength of the fiber reinforced composite pipe provided by the embodiment is 800 times higher, and the service life and the use reliability are greatly improved.
Various embodiments of the application may exist in a range of forms; it should be understood that the description in a range format is merely for convenience and brevity and should not be construed as a rigid limitation on the scope of the application; it is therefore to be understood that the range description has specifically disclosed all possible sub-ranges and individual values within that range. For example, it should be considered that a description of a range from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5, and 6, wherever applicable. In addition, whenever a numerical range is referred to herein, it is meant to include any reference number (fractional or integer) within the indicated range.
In the present application, unless otherwise specified, terms such as "upper" and "lower" are used specifically to refer to the orientation of the drawing in the figures. In addition, in the description of the present specification, the terms "include", "comprising" and the like mean "including but not limited to". Relational terms such as "first" and "second", and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Herein, "and/or" describing an association relationship of an association object means that there may be three relationships, for example, a and/or B, may mean: a alone, a and B together, and B alone. Wherein A, B may be singular or plural. Herein, "at least one" means one or more, and "a plurality" means two or more. "at least one", "at least one" or the like refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, "at least one (individual) of a, b, or c," or "at least one (individual) of a, b, and c," may each represent: a, b, c, a-b (i.e., a and b), a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple, respectively.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The fiber reinforced composite pipe is characterized by being manufactured by adopting a thermal state forming process, the fiber reinforced composite pipe comprises reinforced fibers (1) and at least two pipe bodies (2), a lap joint structure (3) is arranged between every two adjacent pipe bodies (2), the lap joint structure (3) is spirally arranged, the reinforced fibers (1) are spirally arranged in the lap joint structure (3) in a penetrating mode, the reinforced fibers (1) comprise first fiber ropes (4) and second fiber ropes (5), and the first fiber ropes (4) and the second fiber ropes (5) are all arranged in gaps of the lap joint structure (3) in a penetrating mode.
2. Fiber reinforced composite pipe according to claim 1, characterized in that the gap of the overlap structure (3) is filled with an adhesive (6), the first fiber rope (4) being located outside the adhesive (6) and the second fiber rope (5) being located inside the adhesive (6).
3. Fiber reinforced composite pipe according to claim 2, characterized in that the gap opening of the overlap structure (3) is provided with a capping layer (7), the first fiber rope (4) being located inside the capping layer (7).
4. The fiber reinforced composite pipe according to claim 1, wherein the overlap structure (3) comprises a first spiral flange (8) and a second spiral flange (9), the first spiral flange (8) and the second spiral flange (9) are respectively arranged at two ends of the pipe body (2), an overlap groove is arranged at the inner side of the first spiral flange (8), and an overlap block matched with the overlap groove is arranged at the inner side of the second spiral flange (9).
5. Fiber reinforced composite pipe according to claim 4, characterized in that the first (8) and second (9) spiral flanges are hollow structures.
6. The fiber reinforced composite pipe according to claim 4, further comprising a sealing layer provided on the inner wall of the pipe body (2) and sealing the inner wall of the lap joint structure (3), the sealing layer comprising a sealing portion (10) and a filling portion (11), the sealing portion (10) being provided on the inner wall of the pipe body (2), the filling portion (11) being provided outside the sealing portion (10) and filling in a gap between the lap joint block and the lap joint groove.
7. A method of producing a fiber-reinforced composite pipe according to any one of claims 1 to 6, comprising the steps of:
obtaining a strip-shaped section bar;
coating a first molten material on the bottom and the lap joint of the strip-shaped section bar, and then carrying out rotary winding to obtain a spiral pipe which is lapped back and forth;
and coating a second melting material and two nonmetal fiber ropes on the lap joint of the spiral pipes which are overlapped back and forth, and then coating a third melting material for capping to obtain the fiber reinforced composite pipe.
8. The method of manufacturing according to claim 7, wherein the step of obtaining a strip profile comprises:
adding polyethylene material into an extruder, and extruding through a die head to obtain polyethylene melt;
and shaping the polyethylene melt by adopting a shaping die to obtain the strip-shaped section.
9. The method of claim 7, wherein the first melt, the second melt, and the third melt are all polyethylene melts, and the non-metal fiber strands are made of at least one of carbon fibers, basalt fibers, and ultra-molecular weight polyethylene fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310782920.2A CN116817036A (en) | 2023-06-28 | 2023-06-28 | Fiber reinforced composite pipe and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310782920.2A CN116817036A (en) | 2023-06-28 | 2023-06-28 | Fiber reinforced composite pipe and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116817036A true CN116817036A (en) | 2023-09-29 |
Family
ID=88119893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310782920.2A Pending CN116817036A (en) | 2023-06-28 | 2023-06-28 | Fiber reinforced composite pipe and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116817036A (en) |
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2023
- 2023-06-28 CN CN202310782920.2A patent/CN116817036A/en active Pending
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