CN104015375B - A kind of big thickness area composite product pouring and molding method - Google Patents
A kind of big thickness area composite product pouring and molding method Download PDFInfo
- Publication number
- CN104015375B CN104015375B CN201410243911.7A CN201410243911A CN104015375B CN 104015375 B CN104015375 B CN 104015375B CN 201410243911 A CN201410243911 A CN 201410243911A CN 104015375 B CN104015375 B CN 104015375B
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- reinforced fabric
- molding method
- composite product
- pouring
- big thickness
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Classifications
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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
-
- 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
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/546—Measures for feeding or distributing the matrix material in the reinforcing structure
- B29C70/547—Measures for feeding or distributing the matrix material in the reinforcing structure using channels or porous distribution layers incorporated in or associated with the product
Abstract
A kind of big thickness area composite product pouring and molding method, it is adaptable to the form of big thickness composite product.The present invention is directed to wind electricity blade goods vacuum paving and help problem present in pouring and forming process, by extension supporting platform (5) in moulding process and division board (4), separate contacting between injected rubber hose (6) and composite reinforced fabric laying (1), reduce resin flow velocity at initial stage in filling process, to avoid resin " impact type " to enter inside reinforced fabric, make between resin and reinforced fabric, there is sufficient infiltrating time, thus reduce non-wetting and occur containing the situation that glue is not enough.Form peel ply (2) at the permeable medium (8) that composite reinforced fabric laying (1) surface lay dispersibility is stronger and can collect the bubble separated out by support platform (5) and division board (4) dispersion in resin, and make bubble diminish further, easily it is pumped, and reaches to solve the purpose of goods perfusion blush defect.
Description
Technical field
The invention belongs to composite vacuum auxiliary pouring and molding technical field, relate generally to a kind of big thickness area composite product pouring and molding method.
Background technology
In the moulding process that composite is numerous, vacuum auxiliary pouring and molding technique is low because of its mould input cost, less by product design size limitation, can manufacture the advantages such as large-scale component and be used by the manufacture of wind power generating blade flake products.At present, the main flow of composite vacuum auxiliary pouring and molding technique is: 1, lay reinforced fabric glass fabric on mould in advance；2, in reinforced fabric, lay flow-guiding screen, injected rubber hose, and outside goods, arrange evacuation medium and exhaust tube, set up vacuum system；3, utilize vacuum pump to make whole system be in vacuum negative pressure condition, at this moment import resin, complete perfusion, curing molding.Above-mentioned composite vacuum auxiliary pouring and molding technique is as good as being successful in the application for general composite product, and for the wind electricity blade goods with certain thickness requirement, perfusion blush defect is there will be at blade product surface after perfusion operation completes, this perfusion blush defect is concentrated mainly on injecting glue pipeline near zone, and along with the order of severity strengthening its perfusion blush defect of thickness of composite material is consequently increased.Analysis result shows, when being irrigated composite, interiors of products may be because of hole, resin non-wetting, bubble coalescence and cause product surface perfusion blush defect occur containing reasons such as glue are not enough.And the existence of this defect can make the intensity of product, fatigue behaviour decline, particularly for the wind electricity blade of big thickness composite structure, its root of blade glass fabric reinforced fabric layer is more than 100 layers, wind turbine blade root is as rigidly connected main bearing member, by repeat load long term, the existence of perfusion blush defect will directly affect wind electricity blade service life, and cause potential safety hazard.
Summary of the invention
In view of the problem existing for the vacuum auxiliary pouring and molding Technology that existing wind electricity blade goods are used, the present invention devises a kind of big thickness area composite product pouring and molding method, the method passes through extension supporting platform and division board, separate contacting between injected rubber hose and composite reinforced fabric goods, reduce resin initial flux speed in filling process, to avoid resin " impact type " to enter inside reinforced fabric, make between resin and reinforced fabric, have the sufficient time to infiltrate, thus reduce non-wetting and occur containing situations such as glue are not enough.And place peel ply at composite material surface, the bubble separated out by support platform and division board dispersion in resin can be collected, and make bubble diminish further, easily be pumped, and reach to solve the purpose of perfusion blush defect.
For realizing foregoing invention design, the concrete technical scheme that the present invention takes is: a kind of big thickness area composite product pouring and molding method, specifically comprises the following steps that
1, complete composite reinforced fabric laying and the lay of other material by the structural requirement of design, complete structure laying operation；
2, at the permeable medium composition peel ply that composite reinforced fabric laying surface a kind of fabric of lay or felt class or isolating membrane or release cloth dispersibility are stronger；
3, at the laying surface lay permeable medium flow-guiding screen of lay peel ply；
4, placing division board, the division board that thickness is 1.0mm～2.0mm manufactured the good semi-rigid material that uses form-dependent character is placed on flow-guiding screen；
5, support platform is placed on the top of division board, and injected rubber hose is contained in support platform, and support platform makes to be formed between injected rubber hose and composite reinforced fabric laying a certain distance, by permeable medium connection glue injection pipe and flow-guiding screen, completes the layout of perfusion system；
6, arrange extract system, connect exhaust tube and evacuation medium, at goods integral surface covering vacuum bag film, and extract system will be made to keep vacuum state with vacuum pump after vacuum bag film sealing with sealant tape；
7, priming by vacuum, curing molding.
8, in stripping process, the most first remove permeable medium, division board and other auxiliary materials, then take off peel ply from product surface, obtain composite product.
Described a kind of big thickness area composite product pouring and molding method, wherein support platform be cross section be the parallel body structure of ladder type shape；Described a kind of big thickness area composite product pouring and molding method, wherein support platform uses polyethylene (PE), polyurethane (PU), polystyrene (PS), polrvinyl chloride (PVC), polyethylene propylene nitrile (SAN) foamed materials to make；Described a kind of big thickness area composite product pouring and molding method, wherein division board uses fiberglass thin plate or silicone rubber thin plate to make；Described a kind of big thickness area composite product pouring and molding method, wherein peel ply uses isolating membrane, release cloth, fabric, felt class material to make.Described a kind of big thickness area composite product pouring and molding method, wherein, composite reinforced fabric laying is glass fabric.
One of the present invention big thickness area composite product pouring and molding method, when can effectively prevent big thickness composite product from preventing resin infusion in forming process, the impact to composite reinforced fabric laying irrigates, resin and reinforced fabric laying is made to have the sufficient time to infiltrate, arranging peel ply can make the bubble etc. in resin be gathered in peel ply, avoid irrigating the defect turned white to produce, hence it is evident that improved quality and the service life of big thickness composite product.As a example by large-scale wind generating blade, using the pouring and molding method of the present invention, its root of blade perfusion effect is the most notable.
Accompanying drawing explanation
Fig. 1 is the pouring and molding method schematic diagram of prior art；
In figure: 1, composite reinforced fabric laying；3, flow-guiding screen；6, injected rubber hose；7, gum-injecting port；9, vacuum bag film；10, evacuation medium；11, exhaust tube；12, sealant tape；13, mould.
Fig. 2 is the pouring and molding method schematic diagram of the present invention.
In figure: 1, composite reinforced fabric laying；2, peel ply；3, flow-guiding screen；4, division board；5, support platform；6, injected rubber hose；7, gum-injecting port；8, permeable medium；9, vacuum bag film；10, evacuation medium；11, exhaust tube；12, sealant tape；13, mould.
Detailed description of the invention
The detailed description of the invention providing the present invention below in conjunction with the accompanying drawings is as follows:
As in figure 2 it is shown, one of the present invention big thickness area composite product pouring and molding method, it specifically comprises the following steps that
1, on mould 13, carry out composite reinforced fabric laying 1 and the lay of other materials by design structural requirement, complete structure laying operation；
2, perfusion system is set up, at composite reinforced fabric laying 1 surface lay peel ply 2, peel ply 2 is to select the isolating membrane or release cloth or fabric or the making of felt class material that porosity is little, dispersibility is strong, its effect is can to collect in resin by bubble after support platform 5 and division board 4 dispersion, makes bubble diminish and is pumped.At the laying surface lay flow-guiding screen 3 of lay peel ply 2, being then placed on flow-guiding screen 3 by the division board 4 that semi-rigid material fiberglass thin plate good for form-dependent character or silicone rubber thin plate make, the thickness of division board 4 is 1.0mm～2.0mm.Support platform 5 is placed on the top of division board 4, support platform 5 be cross section be the parallel body structure of ladder type shape.Injected rubber hose 6 is arranged in support platform 5, support platform 5 makes to be formed between injected rubber hose 6 and composite reinforced fabric laying 1 a certain distance, can avoid directly contacting between injected rubber hose 6 and composite material fabric laying 1, reduce resin flow velocity at initial stage in filling process, make between resin and fabric laying, have the sufficient time to infiltrate.By permeable medium 8 connection glue injection pipe 6 and flow-guiding screen 3, form whole perfusion system；
3, around composite reinforced fabric laying 1, extract system is arranged, with exhaust tube 11 and evacuation medium 10 UNICOM in composite reinforced fabric laying 1, then cover the integral surface of goods by vacuum bag film 9 and use sealant tape 12 to seal, making extract system keep vacuum state with vacuum pump；
4, irrigating and solidify the demoulding, resin sucks composite reinforced fabric laying 1 by gum-injecting port 7 by vacuum pressure, irrigates, solidifies.First removing permeable medium 8, division board 3, support platform 5 and related accessories during the demoulding, then taken off from product surface by peel ply 3, the bubble collected is taken away by peel ply 3, obtains flawless wind electricity blade goods.
Claims (4)
1. a big thickness area composite product pouring and molding method, is characterized in that: described a kind of big thickness area composite product refers to the glass fabric reinforced fabric layer thickness region composite product more than 100 layers, and its pouring and molding method is:
1) composite reinforced fabric laying (1) and release cloth, the lay operation of barrier material are completed by the structural requirement of design；
2) permeable medium (8) being made up of fabric or felt class material or isolating membrane or release cloth at composite reinforced fabric laying (1) surface lay forms peel ply (2)；
3) on peel ply (2) laying surface lay flow-guiding screen (3)；
4) division board that thickness is 1.0mm～2.0mm (4) using semi-rigid material to manufacture is placed on flow-guiding screen (3)；
5) support platform (5) of the parallel body structure that cross section is ladder type shape is placed on division board (4) top, injected rubber hose (6) is contained in support platform (5), and form a certain distance between composite reinforced fabric laying (1), by permeable medium (8) connection glue injection pipe (6) and flow-guiding screen (3), form perfusion system；
6) connect exhaust tube (11) and evacuation medium (10), at goods integral surface covering vacuum bag film, after vacuum bag film being sealed with sealant tape (12), use vacuum pump to make extract system keep vacuum state；
7) priming by vacuum, curing molding, complete demoulding work.
One the most according to claim 1 big thickness area composite product pouring and molding method, is characterized in that: support platform (5) uses polyethylene, polyurethane, polystyrene, polyvinyl chloride foam material to make.
One the most according to claim 1 big thickness area composite product pouring and molding method, is characterized in that: division board (4) uses fiberglass thin plate or silicone rubber thin plate to make.
One the most according to claim 1 big thickness area composite product pouring and molding method, is characterized in that: composite reinforced fabric laying (1) is glass fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410243911.7A CN104015375B (en) | 2014-06-04 | 2014-06-04 | A kind of big thickness area composite product pouring and molding method |
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| CN201410243911.7A CN104015375B (en) | 2014-06-04 | 2014-06-04 | A kind of big thickness area composite product pouring and molding method |
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| CN104015375A CN104015375A (en) | 2014-09-03 |
| CN104015375B true CN104015375B (en) | 2016-08-17 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104908340A (en) * | 2015-06-03 | 2015-09-16 | 广东明阳风电产业集团有限公司 | Pouring structure and pouring process for wind power generator blade web |
| CN105109060A (en) * | 2015-09-17 | 2015-12-02 | 江苏恒神股份有限公司 | Vacuum assisted resin injection process for preparing fiber composite material |
| CN105215042B (en) * | 2015-09-23 | 2019-02-05 | 李福荣 | The method for treatment of waste material that generates and product application method is made in wind electricity blade production |
| CN105214913A (en) * | 2015-11-10 | 2016-01-06 | 南车株洲电机有限公司 | A kind of glue injection equipment of magnetic pole box and glue injection method thereof |
| CN107199715B (en) * | 2016-03-16 | 2019-03-01 | 株洲时代新材料科技股份有限公司 | A kind of pre-buried blade root method for filling of bolt sleeve |
| MA45359A (en) * | 2016-06-14 | 2019-04-17 | Lm Wp Patent Holding As | WIND TURBINE BLADE MANUFACTURING PROCESS |
| CN108297454B (en) * | 2017-04-25 | 2019-11-22 | 航天特种材料及工艺技术研究所 | A kind of polymer matrix composites, preparation method and vacuum bag used |
| CN107009644B (en) * | 2017-05-05 | 2023-06-30 | 保定华翼风电叶片研究开发有限公司 | Wind power blade manufacturing method |
| CN107187080B (en) * | 2017-05-25 | 2020-03-31 | 中材科技(萍乡)风电叶片有限公司 | Vacuum infusion forming process method for thick composite material part |
| CN107471686A (en) * | 2017-08-22 | 2017-12-15 | 哈尔滨工程大学 | A kind of 3 D stereo glass fabric reinforced epoxy sandwich composite preparation technology |
| CN107605668B (en) * | 2017-08-30 | 2019-08-02 | 新疆金风科技股份有限公司 | The outer reinforcement of blade and blade for wind power generating set |
| CN108642901A (en) * | 2018-06-07 | 2018-10-12 | 苏州博秀科技有限公司 | A kind of waterproof, the multi-functional lace fabric of antiultraviolet |
| CN115008791A (en) * | 2022-06-13 | 2022-09-06 | 厦门双瑞风电科技有限公司 | Flat plate forming tool and forming process for plate-shaped composite material |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101456256B (en) * | 2009-01-09 | 2011-01-05 | 中材科技风电叶片股份有限公司 | Megawatt level composite material wind electricity blade vacuum guiding and forming technique |
| CN103350514B (en) * | 2013-06-25 | 2015-04-01 | 常州市宏发纵横新材料科技股份有限公司 | Preparation process of double-surface flat glass steel plate for laboratory test |
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Effective date of registration: 20170720 Address after: 839000 Xinjiang Hami Industrial Park, Guangdong, Hami industrial processing Patentee after: Xinjiang Ruifeng electric double blade Co. Address before: 471039 No. 40 Binhe Road, hi tech Development Zone, Henan, Luoyang Patentee before: Luoyang Sunrui Wind Turbine Blade.Ltd |
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Effective date of registration: 20190505 Address after: 116400 Lingang Industrial Park 123-5, Dalian Emerging Industrial Economic Zone, Zhuanghe City, Dalian City, Liaoning Province Patentee after: Dalian Shuangrui Wind Power Blade Co., Ltd. Address before: 839000 Hami Industrial Park, Xinjiang, Guangdong Industrial Processing Patentee before: Xinjiang Ruifeng electric double blade Co. |