CN103991227A - Production method for constant-section composite-material section material - Google Patents
Production method for constant-section composite-material section material Download PDFInfo
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- CN103991227A CN103991227A CN201410182439.0A CN201410182439A CN103991227A CN 103991227 A CN103991227 A CN 103991227A CN 201410182439 A CN201410182439 A CN 201410182439A CN 103991227 A CN103991227 A CN 103991227A
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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
-
- 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
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D25/00—Woven fabrics not otherwise provided for
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Moulding By Coating Moulds (AREA)
- Woven Fabrics (AREA)
Abstract
A disclosed production method for a constant-section composite-material section material comprises the following technological steps: 1) weaving, specifically employing a large-size 2.5D stereo weaving machine to finish weaving of 2.5D prefabricated fabric on-line stereo fabric; 2) pre-setting, specifically conveying the stereo fabric to a pre-setting apparatus for continuous setting by employing a conveying apparatus; 3) performing gum dipping, specifically connecting an injection apparatus controllable in pressure and metering and a backflow apparatus with a gum-dipping apparatus, injecting resin into the gum-dipping apparatus with designed pressure and flow velocity, and matching the injected resin amount with the designed pressure, the thickness of the prefabricated fabric and the drawing extrusion speed; 4) performing curing molding, specifically sending the prefabricated fabric subjected to gum dipping to a metal mold, performing curing molding under the effect of an electric heating plate of drawing extrusion equipment, employing a three-zone heating curing technology, and controlling the curing temperature at a scope of 100 DEG C-180 DEG C; and 5) cutting to obtain finished products, specifically utilizing a tracking cutting machine, and cutting according to demanded length to obtain finished products of the composite-material section material.
Description
Technical field
The present invention relates to composite technology of preparing, be specially a kind of production method of uiform section composite material section bar.
Background technology
High-performance fiber strengthens polymer matrix composites and is considered to the material of new generation after steel, aluminium alloy and titanium alloy, and this type of material has the advantages such as structure designability, high-strength light, corrosion-resistant, convenient formation.In numerous composite products, the most extensive with the development and application of uiform section composite material section bar, be successfully applied at present the engineering fields such as Aeronautics and Astronautics, building, bridge.
The production technology that high-performance fiber strengthens uiform section composite material section bar mainly comprises compression molding technology, autoclave molding technology, pultrusion technology and Wrapping formed technology, wherein compression molding technology has space, area occupancy volume is few, cost is relatively cheap, production efficiency is high, the advantages such as technical maturity, but weak point is: the goods that are difficult to produce cross sectional shape complexity, add and limited by press, be only suitable for producing middle-size and small-size composite material section bar.Autoclave molding technology is produced uiform section section bar and is had advantage applied widely, moulding process is reliable and stable, but investment is large, and the problem that cost is high has limited its application.Compared with other forming techniques, the major advantage that uses winding shaping technology to produce uiform section section bar is: can be wound around rule according to the force-bearing situation design of product, can give full play to the intensity of fiber, production efficiency is high, cost is low, but the winding technology adaptation of product is poor, cannot be wound around the goods of arbitrary section, especially there are the goods of concavity in cross section.Pultrusion technology is after continuous fortifying fibre is flooded, and traction is through shaping dies. in mould, solidified forming is regulation cross sectional shape, the processing method that demoulding postforming is end article.Not only cost is low, can to produce the feature that Tension Members with Arbitrary Shape Section goods, constant product quality, especially pultrude process can automatic continuous production random length section bar be in theory that above three kinds of methods are incomparable to use pultrusion technology.Pultrusion method is considered to produce the optimal method of uiform section composite material at present.But in the practical application of section bar; except needs bear stretching, shear iso-stress; the different parts that the effects such as bending, torsion and compression that also often can be subject to cause and the stress of different directions, this composite material section bar that unidirectional fibre is strengthened cannot meet the mechanical property demand under complex load operating mode.
Summary of the invention
For the deficiencies in the prior art, the technical problem that quasi-solution of the present invention is determined is that a kind of production method of uiform section composite material section bar is provided.This production method adopts three-dimensional weaving technology and method that continuously resin transfer molding (RTM) process combines to solve uiform section section bar prepared by current pultrusion technology cannot to meet a difficult problem for complex load operating mode, has actual engineering significance.
The technical scheme that the present invention solve the technical problem is to design a kind of production method of uiform section composite material section bar, the following processing step of this production method employing:
1) weaving process: adopt the three-dimensional loom of large-scale 2.5D that multilayer warp thread is equidistantly arranged, through warping, gait, manufacture that opening, wefting insertion and the operation of beating up complete the online stereo fabric of 2.5D prefabricated fabric; Described multilayer warp thread is at least one in carbon fiber, glass fibre, quartz fibre, aramid fiber or basalt fibre;
2) presetting technology: the 2.5D structural upright fabric completing through weaving process is transferred in presetting device by conveyer, adopts presetting device to shape continuously to prefabricated fabric;
3) gum dipping process: by pressure, measure controlled injection device and reflux is connected with gumming device, with design pressure and flow velocity by resin injection in gumming device, the amount of resin of injection matches with the pressure of design, prefabricated fabric thickness and pultrusion speed;
4) cure process: the prefabricated fabric after impregnation is sent in metal die, curing molding under the effect of extruding equipment electric boiling plate, adopts the 3rd district technique that is heating and curing, and solidification temperature scope is 100 DEG C～180 DEG C;
5) cutting finished product: utilize and follow the tracks of cutting machine, cut into composite material section bar finished product by needed length.
Compared with existing known uiform section composite material technology of preparing, proposed by the invention knit at DNA mitochondrial DNA the production method of making the continuous resin transfer moulding composite of ?and have the following advantages:
1. in contrast to known uiform section section bar pultrusion technology, weave-fabric the precast body that resin transfer moulding technology obtains continuously of 2.5D solid used in the present invention has the interlock of angle layer by layer of densification, this structure can ensure fortifying fibre in shape product continuously and complete, the problem that exists hardly stressed rear interior laminate layer to lose efficacy, has ensured the good bearing capacity of uiform section section bar.
2. in contrast to known uiform section section bar pultrusion technology, the three-dimensional weaving technology of 2.5D used in the present invention can, according to the performance of different parts in load working condition Demand Design section bar cross section, can further meet the load demand under complex working condition.
3. than known mold pressing, autoclave, Wrapping formed technology, automatic continuous production of knitting the production method of making the continuous resin transfer moulding composite of ?and can realize uiform section section bar at DNA mitochondrial DNA of the present invention.
4. the uiform section composite material product properties excellence that production line of the present invention obtains, production efficiency is high, is suitable for large-scale promotion and uses.
Brief description of the drawings
Fig. 1 is the process chart of uiform section composite material section bar production method of the present invention;
Fig. 2 is the cellular construction schematic diagram of uiform section composite material section bar production method resulting product neutral body fabric of the present invention;
Fig. 3 weaves part schematic diagram at DNA mitochondrial DNA in uiform section composite material section bar production line of the present invention;
Fig. 4 is the continuous resin transfer moulding part schematic diagram in uiform section composite material section bar production line of the present invention;
Fig. 5 is presetting device schematic diagram in uiform section composite material section bar production line of the present invention;
Fig. 6 is gumming device schematic diagram in uiform section composite material section bar production line of the present invention.
In Fig. 3,1 is spindle, and 2 is cord roller, and 3 is yarn, and 4 is thread board, and 5 is V-arrangement tension adjustment split rods, and 6 is thread board, and 7 is heald frame, and 8 is heald lifting device, and 9 is tension lines, and 10 is porous heald, and 11 is wefting insertion, beating device, and 12 is prefabricated fabric.
In Fig. 4,13 is conveyer, and 14 is injection device, and 15 is backflow fluid reservoir, and 16 is fabric shaping equipment, and 17 is gumming device, and 18 is heating plate, and 19 is curing mold, and 20 is pre-traction device, and 21 is rear towing device, and 22 is trusses goods, and 23 is cutter sweep.
In Fig. 5,161 is upper injection-tube, and 162 is hemostasis pipe, and 163 is top nozzle, and 164 is lower nozzle, and 12 is prefabricated fabric, and 166 is heat insulation, and 167 is electric heating tube.
In Fig. 6,171 is the stereo fabric after sizing, 172 is adhesive tape in the anterior movable sealing of die cavity, and 173 is adhesive tape under the anterior movable sealing of die cavity, and 174 is upper injection-tube, 175 is hemostasis pipe, 176 is injecting cavity, and 177 is exhaust gas recirculation pipe, and 178 is backflow liquid storage cylinder, 179 is adhesive tape in the movable sealing of die cavity rear portion, and 1710 is adhesive tape under the movable sealing of die cavity rear portion.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention will be further described.
The production method (being called for short production method, referring to Fig. 1-6) of a kind of uiform section composite material section bar of the present invention's design, this production method adopts following processing step:
1) weaving process: adopt the three-dimensional loom of large-scale 2.5D that multilayer warp thread is equidistantly arranged, through warping, gait, manufacture that opening, wefting insertion and the operation of beating up complete the online stereo fabric of 2.5D prefabricated fabric; Described multilayer warp thread is at least one in carbon fiber, glass fibre, quartz fibre, aramid fiber or basalt fibre;
2) presetting technology: the 2.5D structural upright fabric completing through weaving process is transferred in presetting device by conveyer, adopts presetting device to shape continuously to prefabricated fabric;
3) gum dipping process: by pressure, measure controlled injection device and reflux is connected with gumming device, with design pressure and flow velocity by resin injection in gumming device, the amount of resin of injection matches with the pressure of design, prefabricated fabric thickness and pultrusion speed;
4) cure process: the prefabricated fabric after impregnation is sent in metal die, curing molding under the effect of extruding equipment electric boiling plate, adopts the 3rd district technique that is heating and curing, and solidification temperature scope is 100 DEG C～180 DEG C;
5) cutting finished product: utilize and follow the tracks of cutting machine, cut into composite material section bar finished product by needed length.
Described step 3) in pressure, measure controlled injection device and mainly formed by PCL input-output control unit, fluid reservoir, measuring pump, Pressure gauge, flowmeter, valve and associated transport pipeline, described reflux is made up of gear pump and fluid reservoir; Described resin is the one in epoxy resin, vinylite or unsaturated-resin, and described prefabricated fabric is step 1) the 2.5D stereo fabric made.
The production method that stereo fabric of the present invention strengthens uiform section composite material section bar be generally by adopt the three-dimensional loom of 2.5D through warping, dividing sinker, secondary warping, denting, gait, opening, wefting insertion, the technique of beating up, fortifying fibre is made to prismatic stereo fabric precast body, then by conveyer, precast body is sent in presetting device and is shaped continuously, after sizing, after gumming device and curing mold, make the stereo fabric reinforced composite section bar with regulation shaped cross.Stereo fabric construction has excellent resistance to damage tolerance and not stratified overall structure, has the designability feature of the higher-dimension free degree, by changing fiber interweaving structure, can be in very wide scope the mechanical property of tailoring material and physical property to meet the requirement of the service conditions such as carrying; Resin transfer molding (RTM) process main feature is, on original pultrude process basis, open steeping vat part is changed to the gumming device for sealing continuously, again by prefabricated fabric shaping equipment by fabric pre-setting to ensure carrying out smoothly of continuous resin transfer molding (RTM) process process, the continuous impregnation ?that this technique can realize the fabric of having shaped solidifies, and then realizes continuously and producing on the basis of effectively improving existing uiform section composite material section bar entirety mechanical property.
Production method of the present invention specifically comprises successively warping, dividing sinker, secondary warping, denting, gaits, opening, wefting insertion, beat up, transmission, pre-setting, injecting glue, solidify, traction and cutting technique (referring to Fig. 1).Compared with the continuous Unidirectional Fiber-reinforced Composite section bar of producing with known pultrusion method, feature of the present invention be by three-dimensional high-performance fiber weaving process by solidifying in precast body transmission, pre-setting and injection process and pultrusion molding process, drawing-off and cutting technique connect, and adopts the method production of weave at DNA mitochondrial DNA-resin transfer moulding to have the uiform section composite material (referring to Fig. 2) of 2.5D fabric construction.
Production method of the present invention to weave production technology at DNA mitochondrial DNA be (referring to Fig. 3): all spindles 1 are fixed on bank, by after yarn 3 unwindings through cord roller 2, arrangement position by design cord roller 2 makes every warp thread 3 enter separately thread board 4 and does not produce contact friction, make respectively creel the first half warp thread 3 and the latter half warp thread 3 enter thread board 6 by V-arrangement tension adjustment split rods 5 respectively through thread board 4, the yarn of drawing from thread board 6 penetrates heald frame 7, the yarn that wherein every row yarn poteye derives is worn a harness eye, every one thread that each harness eye is derived penetrates respectively that one in porous heald 10 combined or two combines, connect heald lifting device 8 and heald 10 by tension lines 9, drive heald 10 to pump to realize multilayer Warp opening by heald lifting device, pass through again wefting insertion, after beating-up mechanism 11, the solid that completes 2.5D section bar prefabricated fabric 12 is weaved.Wherein this part is woven as prior art at DNA mitochondrial DNA.
The continuous resin transfer moulding production technology (referring to Fig. 4) of production method of the present invention comprises transmission, pre-setting, injecting glue, solidifies, draws, cuts several concrete technical process.First, the 2.5D prefabricated fabric 12 of weaving is sent in shaping equipment 16 through connecting gear 13, prefabricated fabric 12 is in shaping equipment 16, its front end is distilled water spraying, distilled water is injected from upper injection-tube 161 and hemostasis pipe 162 respectively, spray respectively by top nozzle 163 and lower nozzle 164, prefabricated fabric 12 is squirted; Device rear end adopts electric heating tube 167 heat-shapings, and the forward and backward two ends of device adopt heat insulation bakelite to connect.
Wherein, described step 2) in adopt presetting device in mainly comprise water spray, heat two parts.In presetting technology, spray distilled water temperature be 25 ?50 DEG C, injection flow be 500 ?1000mL/min, the heating-up temperature of the heating tube in rear terminal mould is 180 DEG C of 120 ?, there is dissolving to a certain degree by the high-performance fiber surface slurry or the inorganic agent that use nozzle water spray to make to infiltrate, then make in fabric moisture Quick-gasifying and shed along with travelling forward of fabric makes steam through high-temperature heating.
Fabric 171 after sizing enters after gumming device 17, controls flow and the flow velocity of resin by PCL input-output control unit and measuring pump, Pressure gauge, flowmeter, valve in injection device 14 etc., and this part is prior art.Resin injects respectively the front die cavity 176 of gumming device 17 by upper injection-tube 174 and hemostasis pipe 175, the upper and lower movable sealing adhesive tape of front die cavity 176 front end can be controlled resin and not flow out from gumming device 17 porch, in impregnation die cavity, form certain pressure, make resin before filling after die cavity 176, continue to be injected in rear die cavity 178, fabric is carried out to secondary infiltration resin, resin flows to backflow fluid reservoir 15 from return duct 177 after being full of rear die cavity 178, after fluid reservoir 15 is full of 3/4ths, by gear pump by the resin injection in backflow fluid reservoir 15 in injection device 14.Fabric completes after resin injection, directly enter curing mold 19, curing mold 19 carries out the 3rd district technique that is heating and curing by upper and lower heating plate 18, for vinylite and unsaturated-resin, the be heating and curing heating-up temperature of technique of described 3rd district is: 100 ?110 DEG C, 140 ?150 DEG C and 140 ?160 DEG C; For epoxy resin, the be heating and curing heating-up temperature of technique of described 3rd district is: 140 ?160 DEG C, 160 ?180 DEG C and 155 ?175 DEG C, from premenstrual rear towing device 20,21 pull-outs of composite material section bar 22 of curing mold pull-out, length adopts cutter sweep 23 to cut as required.
Production method of the present invention compared with prior art, realize the continuous production of uiform section stereo fabric reinforced composite section bar, for improving the production efficiency of stereo fabric reinforced composite, the comprehensive mechanical property that further improves composite material section bar provides new approach.
Claims (4)
1. a production method for uiform section composite material section bar, this production method adopts following processing step:
1) weaving process: adopt the three-dimensional loom of large-scale 2.5D that multilayer warp thread is equidistantly arranged, through warping, gait, manufacture that opening, wefting insertion and the operation of beating up complete the online stereo fabric of 2.5D prefabricated fabric; Described multilayer warp thread is at least one in carbon fiber, glass fibre, quartz fibre, aramid fiber or basalt fibre;
2) presetting technology: the 2.5D structural upright fabric completing through weaving process is transferred in presetting device by conveyer, adopts presetting device to shape continuously to prefabricated fabric;
3) gum dipping process: by pressure, measure controlled injection device and reflux is connected with gumming device, with design pressure and flow velocity by resin injection in gumming device, the amount of resin of injection matches with the pressure of design, prefabricated fabric thickness and pultrusion speed;
4) cure process: the prefabricated fabric after impregnation is sent in metal die, curing molding under the effect of extruding equipment electric boiling plate, adopts the 3rd district technique that is heating and curing, and solidification temperature scope is 100 DEG C ~ 180 DEG C;
5) cutting finished product: utilize and follow the tracks of cutting machine, cut into composite material section bar finished product by needed length.
2. production method according to claim 1, is characterized in that in described presetting technology, and spraying distilled water temperature is 25-50 DEG C, and injection flow is 500-1000mL/min, and the heating-up temperature of the heating tube in rear terminal mould is 120-180 DEG C.
3. production method according to claim 1, is characterized in that for vinylite and unsaturated-resin, and the be heating and curing heating-up temperature of technique of described 3rd district is: 100-110 DEG C, 140-150 DEG C and 140-160 DEG C.
4. production method according to claim 1, is characterized in that for epoxy resin, and the be heating and curing heating-up temperature of technique of described 3rd district is: 140-160 DEG C, 160-180 DEG C and 155-175 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410182439.0A CN103991227A (en) | 2014-04-30 | 2014-04-30 | Production method for constant-section composite-material section material |
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| CN201410182439.0A CN103991227A (en) | 2014-04-30 | 2014-04-30 | Production method for constant-section composite-material section material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104195726A (en) * | 2014-09-23 | 2014-12-10 | 宜兴市华恒高性能纤维织造有限公司 | Automatic 2.5D stereoscopic weaving device |
| CN109693401A (en) * | 2017-10-20 | 2019-04-30 | 江苏源盛复合材料技术股份有限公司 | Composite material drawing and extruding mold, molding equipment and its method, profile and its application |
| CN111649084A (en) * | 2020-06-11 | 2020-09-11 | 中航复合材料有限责任公司 | Composite material plate spring structure for vehicle manufactured by pultrusion process |
| CN111923450A (en) * | 2020-09-14 | 2020-11-13 | 江苏九鼎新材料股份有限公司 | Pultrusion method of thin-wall component |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104195726A (en) * | 2014-09-23 | 2014-12-10 | 宜兴市华恒高性能纤维织造有限公司 | Automatic 2.5D stereoscopic weaving device |
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| CN111649084A (en) * | 2020-06-11 | 2020-09-11 | 中航复合材料有限责任公司 | Composite material plate spring structure for vehicle manufactured by pultrusion process |
| CN111923450A (en) * | 2020-09-14 | 2020-11-13 | 江苏九鼎新材料股份有限公司 | Pultrusion method of thin-wall component |
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Application publication date: 20140820 |