CN103557376A - Continuous large-caliber woven fiber reinforced thermoset pultrusion pipeline and production method - Google Patents
Continuous large-caliber woven fiber reinforced thermoset pultrusion pipeline and production method Download PDFInfo
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- CN103557376A CN103557376A CN201310573700.5A CN201310573700A CN103557376A CN 103557376 A CN103557376 A CN 103557376A CN 201310573700 A CN201310573700 A CN 201310573700A CN 103557376 A CN103557376 A CN 103557376A
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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
- F16L9/121—Rigid pipes of plastics with or without reinforcement with three layers
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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
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
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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
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/345—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
- F16L11/085—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more braided layers
- F16L11/087—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more braided layers three or more layers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention relates to a continuous large-caliber woven fiber reinforced thermoset pultrusion pipeline and a production method. The pipeline is characterized in that the pipe is cylindrical, and the inner wall and the outer wall of the pipe adopt smooth surfaces; the inner diameter of the pipe is 20-400 mm; the size and the thickness of the pipe are determined according to design requirements; the pipe is formed by fiber layers woven by a plurality of long fibers; a layer of resin material is arranged on each fiber layer, and the fiber materials are formed through heat curing; each fiber layer is formed by multiple layers of fiber weaving layers. The production method comprises the following steps: adopting the multi-layer weaving process, winding process, continuous RTM gum dipping process and curing process, drawing and cutting to obtain the finished product. Compared with the prior art, the pipeline and the production method have the advantages that the advantages of light weight and high strength of the fiber composite material are played, the defects of circumferential strength and poor stiffness of a common composite material pultrusion pipeline are overcome, the problems that the fixed-length winding pipe is poor in longitudinal strength, more labor is needed, and the process is complicated are solved, the large-caliber fiber woven pipeline is formed by pultrusion on the condition that the die is fixed, the continuous production is realized, and the production efficiency is high.
Description
[technical field]
The present invention relates to building water supply and draining, blowdown, optical fiber, cable, highway and railway underground construction, water conservancy irrigation, chemical industry, the continuous bigbore conveyance conduit technical field of mine fluid, thermosetting property pultrusion pipeline and production method that specifically a kind of braided fiber strengthens.
[background technique]
Along with China's expanding economy, to municipal engineering, building water supply and drainage, electric power system, chemical industry, communication, the requirement of water conservancy irrigation safety also improves day by day, therefore select good conveyance conduit even more important, for a long time, conveyance conduit adopts metallic material to make, as steel pipe, iron pipe etc., traditional metal materials pipeline is because its production process energy consumption is large, operation mainly with and actual use in humidity, dirty long-pending thing, metallic conductivity in the rugged environment such as coastal salt fog, easy-to-rust, life-span is short, shortcomings such as facility maintenance cost height and being gradually eliminated, the substitute is various New Type Material pipelines.Present plastic pipe and the various plastic ripple pipeline such as common PVC, the PE that has the Wrapping formed pipeline of glass fiber reinforced plastics composite material, an extruding and moulding, PP on market.
As everyone knows, adopt the Wrapping formed pipeline of glass fiber reinforced plastics composite material, longitudinal strength is low, and technique is cumbersome, and common pultrusion pipe ring is to intensity difference, and the size of caliber is only limit within the specific limits.The various single plastic pipes such as PVC, low, the strong end of rigidity, is poor, the life-span is short, fragility is large, easy-rupturing.
[summary of the invention]
The object of the invention is in order to solve above-mentioned contradiction, according to the know-why of Fiberglass-reinforced Plastics Pultrusion Technology And Its Products, the reinforcing material that adopts long fibre to be woven to this pipe combines with resin material, long stapled braid reinforcement is combined with the pultrusion technique of pulling equipment, a kind of production method of new product has been proposed in the world, adopt long fibre and resin material by continuous weaving pultrusion, produce a kind of columniform pipeline that is shaped as, this product rigidity is large, intensity is high, and corrosion-resistant, long service life, and, on pipe diameter size, obtain new breakthrough, to replace existing plastic pipe, the new generation product of Fw Frp Pipe.
For achieving the above object, design the thermosetting property pultrusion pipeline that a kind of continuous heavy caliber braided fiber strengthens, it is characterized in that the cylinder type that is shaped as of described pipe, the inside and outside wall of pipe is smooth surface, 20～400 millimeters of the internal diameters of described pipe, the big or small thickness of pipe is determined according to designing requirement, pipe forms layer of fibers by many long fibre braidings, every layer of layer of fibers is provided with one deck resin material, by heat cure, draw pultrusion, described layer of fibers is comprised of inner fiber layer or first layer fiber braiding layer and outer layer fiber layer or the 3rd layer of fiber braiding layer and internal layer or first layer and mesosphere outer or between the 3rd layer, described mesosphere consists of long grain fiber layer or hoop layer of fibers or staple fiber batt, the fiber that every layer of described layer of fibers adopts is glass fibre or carbon fiber or basalt fibre or aramid fiber, resin used is the thermosetting resin of epoxy resin or polyester resin or phenolic resin or various modified high performances.
For strengthening the intensity of pipe, design the thermosetting property pultrusion pipeline that a kind of continuous heavy caliber braided fiber strengthens, it is characterized in that the cylinder type that is shaped as of described pipe, the inside and outside wall of pipe is smooth surface; 20～400 millimeters of the internal diameters of described pipe, the big or small thickness of pipe is determined according to designing requirement, pipe forms layer of fibers by many long fibre braidings, every layer of layer of fibers is provided with one deck resin material, by heat cure, draw pultrusion, the layer of fibers of pipe is five-layer structure, the interlayer between first layer long fibre braid and layer 5 long fibre braid and first layer and layer 5, consist of, described interlayer is comprised of second layer long grain fiber layer or staple fiber batt, the 3rd layer of long fibre braid or hoop layer of fibers, the 4th layer of long grain fiber layer or staple fiber batt.
For further strengthening intensity, design the thermosetting property pultrusion pipeline that a kind of continuous heavy caliber braided fiber strengthens, it is characterized in that the cylinder type that is shaped as of described pipe, the inside and outside wall of pipe is smooth surface, 20～400 millimeters of the internal diameters of described pipe, the big or small thickness of pipe is determined according to designing requirement, pipe forms layer of fibers by many long fibre braidings, every layer of layer of fibers is provided with one deck resin material, by heat cure, draw pultrusion, the layer of fibers of pipe is multi-layer structure, by first layer long fibre braid, second layer long grain fiber layer or staple fiber batt, the 3rd layer of long fibre braid or hoop layer of fibers, the 4th layer of long grain fiber layer or staple fiber batt, layer 5 is long fibre braid or hoop layer of fibers, layer 6 long grain fiber layer or staple fiber batt, layer 7 long fibre braid forms.
Above-mentioned pipe internal and external walls is smooth, and first layer long fibre to the fiber of layer 7 fiber or mesosphere or interlayer adopts glass fibre or carbon fiber or basalt fibre or aramid fiber to make.
Every layer of layer of fibers is provided with one deck resin material, and the resin adopting is the thermosetting resin of epoxy resin or polyester resin or phenolic resin or various modified high performances.
The thermosetting property pultrusion pipe production method that heavy caliber braided fiber strengthens, is characterized in that the method comprises following process step: weaving: by two knitting machines or many knitting machines, weave equidistant cross arrangement layer of fibers on cylindrical core; Winding process: between inside and outside braid, can be wound around as required the fibre reinforced materials in various mesospheres; Gum dipping process: be provided with the resin material having prepared in receptacle, adopt continuous RTM injection to every one deck fiber impregnation, every one deck all will soak into; After gum dipping process, enter cure process: the lamination coating after impregnation enters in metal outer mold tool solidifying under the effect of uniform temperature, 120 ℃～170 ℃ degree of solidifying temperature; Traction technique: adopt continuously pulling equipment, automatically the product being cured is pulled out; Cutting finished product: by following the tracks of cutting machine, by design length requirement, cut into finished product, in described pultrude process, inside and outside mould maintains static, and the heating cure under interior external mold extruding of inside and outside layer fiber and mesosphere fiber, is out finished product from mould, finished product can endless, according to user, need length cutting, the inside and outside layer structure of described product adopts fiber braiding layer, solved large-scale pultrusion product inner and outer surface and easily cracked the problem that intensity is low.
Compared with prior art, structure is different in the present invention, and internal and external layer structure is fiber braiding layer, and interlayer structure can be selected long grain fiber by usage requirement, hoop fiber or fibrofelt; There is very high strength and stiffness and impact resistance, made up the shortcoming of Wrapping formed pipe longitudinal strength deficiency, also solved common pultrusion pipe ring to the problem of strength deficiency; The advantage of having given full play to fibrous composite high-strength light, has good intensity, rigidity and combination property; Auto-processes, produces continuously, and manufacturing efficiency is high, has overcome the recruitment of fixed length entwining tube many, the defect that technique is loaded down with trivial details.
[accompanying drawing explanation]
Fig. 1 is the product configurations figure of the invention;
Fig. 2 is the production technology schematic diagram of the invention;
Referring to Fig. 1, fiber braiding layer three-decker: 1. 2. mesosphere 3. fibrages of fibrage internal layer are outer;
Referring to Fig. 2,21. die supports and mold 22. mould 23. knitting machine 24. mesosphere 25. knitting machine 26. impregnation mould 27. curing oven 28. tractor 29. cutting machines;
Specify Fig. 1 as Figure of abstract of the present invention.
[embodiment]
Below in conjunction with accompanying drawing, the invention is described in further details, this layer of fibers knitting skill comprises that mesosphere production technology is clearly to this professional people, its product structure of different production methods and technical order are different.
Fig. 1 has provided three layers of schematic diagram of basic structure of fiber braiding layer, Fig. 2 has provided process flow diagram, referring to Fig. 2, mould 22 is fixed on mould rack 21, external mold 27 is heated up, be ready to knitting machine 23 and knitting machine 25 and fiber spindle and mesosphere 24, the layer of fibers of Fig. 1 is coated on core 22 through impregnation mould 26 impregnations, together with median fiber, under tractor 28 tractions, enter outer mold 27, heating cure, product from right-hand member out, cutting machine 29 surface trimmings after the length of or design requirement long to 6 meters, become product, in this pultrude process, in, outer mold maintains static, in, the heating cure under interior external mold extruding of outer layer fiber and mesosphere fiber, from mould, be out finished product, finished product can endless, according to user, need length cutting, in product, layer structure adopts fiber braiding layer, it not conventional long grain fiber layer, solve large-scale pultrusion product inner and outer surface and easily cracked the problem that intensity is low, weaving: weave the layer of fibers of equidistant cross arrangement by two or many knitting machines on cylindrical core, the resin material that gum dipping process adopts RTM injection to prepare, resin material is epoxy resin or the heat cured resin material such as phenolic resin or polyester resin, cure process is that the material through impregnation enters in metal outer mold tool solidifying under the effect of oven electric hot plate, 120 ℃～170 ℃ degree of solidifying temperature, oven adopts Resistant heating or radio frequency heating or other electro-heat installation, simultaneously, operation forward under pulling equipment effect, form the smooth pipeline of inside and outside wall, cutting finished product technique, by following the tracks of cutting machine, cuts into finished product by design length requirement.
Claims (4)
1. the thermosetting property pultrusion pipeline that continuous heavy caliber braided fiber strengthens, is characterized in that the cylinder type that is shaped as of pipe, and the inside and outside wall of pipe is smooth surface; 20～400 millimeters of the internal diameters of described pipe, the big or small thickness of pipe is determined according to designing requirement, pipe consists of multi-layer fiber layer, every layer of layer of fibers is provided with one deck resin material, by heat cure moulding, described layer of fibers is comprised of the mesosphere between inner fiber braid and outer layer fiber braid and internal layer and skin, described mesosphere consists of long grain fiber layer or hoop layer of fibers or staple fiber batt, and the fiber that every layer of described layer of fibers adopts is glass fibre or carbon fiber or basalt fibre or aramid fiber.
2. the thermosetting property pultrusion pipeline that a kind of continuous heavy caliber braided fiber as claimed in claim 1 strengthens, it is characterized in that described pipe internal and external walls is smooth, internal and external layer fiber or mesosphere fiber employing glass fibre or carbon fiber or basalt fibre or aramid fiber are made.
3. the thermosetting property pultrusion pipeline that a kind of continuous heavy caliber braided fiber as claimed in claim 1 strengthens, it is characterized in that every layer of layer of fibers is provided with one deck resin material, the resin adopting is the thermosetting resin of epoxy resin or polyester resin or phenolic resin or various modified high performances.
4. the thermosetting property pultrusion pipe production method that continuous heavy caliber braided fiber strengthens, is characterized in that the method comprises following process step:
Weaving: weave equidistant cross arrangement layer of fibers by two knitting machines or many knitting machines on cylindrical core;
Winding process: between inside and outside braid, can be wound around as required the fibre reinforced materials in various mesospheres;
Gum dipping process: be provided with the resin material having prepared in receptacle, adopt continuous RTM injection to every one deck fiber impregnation, every one deck all will soak into;
Cure process: the lamination coating after impregnation enters in metal outer mold tool solidifying under the effect of uniform temperature, 120 ℃～170 ℃ degree of solidifying temperature;
Traction technique: adopt continuously pulling equipment, automatically the product being cured is pulled out;
Cutting process: by following the tracks of cutting machine, cut into finished product by design length requirement;
In described pultrude process, inside and outside mould maintains static, and the heating cure under the extruding of interior external mold of inside and outside layer of fibers and median fiber layer, is out finished product from mould, and finished product can endless, according to user, needs length cutting;
The inside and outside layer structure of described product adopts fiber braiding layer, solved large-scale pultrusion product inner and outer surface and easily cracked the problem that intensity is low.
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Cited By (24)
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| CN104390085A (en) * | 2014-04-29 | 2015-03-04 | 樊哲斌 | Conveying pipe for light-weight concrete pump truck arm frame |
| CN106079483A (en) * | 2016-07-25 | 2016-11-09 | 威海首创实利进出口有限公司 | A kind of super-strong and super-toughened composite body of rod and manufacture method thereof |
| CN106183893A (en) * | 2016-08-11 | 2016-12-07 | 西安唯实输配电技术有限公司 | It is applied to the overall compound inslation bracket of railway contact net and manufactures device and technique |
| CN106195481A (en) * | 2016-10-08 | 2016-12-07 | 威海纳川管材有限公司 | Nonmetal pipeline joint |
| CN106273579A (en) * | 2016-10-20 | 2017-01-04 | 常州市绿佳环保设备有限公司 | High strength fibre is compiled around pultrusion pipeline and production technology thereof |
| CN108006334A (en) * | 2017-12-12 | 2018-05-08 | 山东柏远复合材料科技有限公司 | A kind of fiberglass pultrusion, the preparation process of the duplexing skill compound bellows of winding |
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| CN111267368A (en) * | 2018-12-05 | 2020-06-12 | 湖南易净环保科技有限公司 | Production process for winding, extruding and drawing pipe by large-diameter epoxy glass fiber and braid |
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| CN103880332A (en) * | 2014-02-17 | 2014-06-25 | 安徽经天金属表面处理科技有限公司 | Preparation and use method of heating curing type wear-resistant composite ceramic coating |
| CN104390085A (en) * | 2014-04-29 | 2015-03-04 | 樊哲斌 | Conveying pipe for light-weight concrete pump truck arm frame |
| CN106079483A (en) * | 2016-07-25 | 2016-11-09 | 威海首创实利进出口有限公司 | A kind of super-strong and super-toughened composite body of rod and manufacture method thereof |
| CN106183893A (en) * | 2016-08-11 | 2016-12-07 | 西安唯实输配电技术有限公司 | It is applied to the overall compound inslation bracket of railway contact net and manufactures device and technique |
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