CN100381272C - Technological process resulting in improved structural quality of vacuum permeation formed composite material - Google Patents
Technological process resulting in improved structural quality of vacuum permeation formed composite material Download PDFInfo
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- CN100381272C CN100381272C CNB011205768A CN01120576A CN100381272C CN 100381272 C CN100381272 C CN 100381272C CN B011205768 A CNB011205768 A CN B011205768A CN 01120576 A CN01120576 A CN 01120576A CN 100381272 C CN100381272 C CN 100381272C
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Abstract
The present invention provides a technology method for improving the quality of a composite material structure of vacuum penetration forming. The contents of the present invention mainly comprises that a manufacture member to be machined is arranged in a sealing space composed of a mold plate of a mold for bottom pading, peripheral sealing putty and a vacuum bag with the top closed; a ventilating material layer is laid on the upper surface of the manufacture member, and rubber injection is carried out towards the bottom of the manufacture member by a rubber injection pipe; because the negative pressure function caused by vacuum pumping of exterior to the sealing space, colloidal material injected into the bottom of the manufacture member can upwards soak the member. The technology method of the present invention is characterized in that before the rubber injection pipe is used for carrying out rubber injection towards the bottom of the manufacture member, the suction-in end of the rubber injection pipe is closed by a clogging object; the sealing space and the manufacture member are pumped to be vacuum; when the vacuum degree reaches 0.9MPa below zero, the suction-in end of the rubber injection pipe in a closed state is put in the resin of a resin container, and then, the clogging object for closing is taken off to make the rubber injection pipe start carrying out sucking injection. Compared with the prior art, the technology method of the present invention realizes the machining forming to the manufacture member with large thickness, reduces the void content at the interior of the manufacture piece simultaneously, improves the soaking degree and the uniformity and greatly improves the quality of products.
Description
Introduction of the present invention be a kind of process that improves vacuum infiltration formed composite material architecture quality, it has improved the quality of the composite structure of vacuum infiltration method moulding effectively.
The method of vacuum infiltration forming composite is a kind of extra pressure that do not need, and only relies on vacuum pressure that resin suck is strengthened behind the body the directly method of curing molding.The existing processes technology has mainly proposed the technological measure of the following aspects at the version of different products:
1. resin flow mode.Resin flow can adopt dual mode, and a kind of is that resin is mobile to lower surface from the upper surface of product, infiltration, and gas permeable material is placed on lower surface; Another kind is to allow resin flow, to permeate to upper surface from the lower surface of product, and gas permeable material is placed on upper surface.
2. the design of runner.The mode of runner has two kinds, and a kind of is to place the grid that resin easily passes through on the product surface, makes resin be full of a certain surface at first soon, then soaks into whole product again; Another kind is the groove that does not wait by a large amount of size of certain way processing on mould.Not only wide but also dark groove runs through a certain big surface of product, and as sprue, reprocessing has a large amount of not only narrow but also shallow branch flow passages between sprue, makes resin can be full of this surface very soon.
3. frock mode.Place some vacuum nozzles at the edge of product, to discharge the gas in the product and to help resin flows as far as possible.
4. the control of technical process.In whole suction process, to vacuumize all the time, up to resin gel.
In the process of product, choosing according to above-mentioned technical measures that suitable technological process produces is in order to obtain qualified product, and product quality estimate leading indicator be see whether product inside dry spot occurs, try one's best few bubble and voids content, and the quality of these indexs all directly influences the performance of product.What prior art was mainly studied is how to allow resin can soak into whole product, and dry spot do not occur, does not almost see the technical measures that how to reduce product mesopore content.For composite product, the existence of internal void is inevitable, especially use the resin system that contains reactive diluent, if technological design is improper, may in product, leave a large amount of bubbles, and this point is a vital index in parts quality, and its height directly influences the performance of product.So this problem will become in this technical field research direction from now on.
Purpose of the present invention provides a kind of process that improves vacuum infiltration formed composite material architecture quality at above-mentioned the design about how reducing this technical difficult point problem of product inner pore content just, it has reduced the voids content of product inside effectively, has improved the quality of product.
The objective of the invention is to realize by following measure: this kind improves the process of vacuum infiltration formed composite material architecture quality, compared with prior art some is the same to the formation of its technological measure, its content mainly comprises, by rebasing mould template, be provided with product to be processed in the sealant of periphery and the confined space that vacuum bag constituted that binds, be equipped with one deck breathable material layer above the product, by injected rubber hose to the bottom of product injecting glue, because the outside vacuumizes the suction function that is caused to above-mentioned confined space, the colloidal materials that injects the product bottom can upwards soak into member, and process of the present invention is characterised in that, using sebific duct before the injecting glue of the bottom of product, the suction side of injected rubber hose is sealed with stifled thing, above-mentioned confined space and product are evacuated to vacuum, when vacuum reaches 0.09MPa, the resin of plastic holding device is put in the suction side that will be in the injected rubber hose of closed state, takes off the stifled thing of its sealing again, makes it begin suction.In addition, the gummosis section of injected rubber hose and the position of product relation is, gummosis section is set in parallel in a side of product, and distance L between the two should be greater than 50 centimetres.Above-mentioned process can reduce the voids content of product inside widely by the check in experiment and production process, and resin can fully soak into whole product, has improved the degree of soaking into and uniformity.
The drawing of accompanying drawing is described as follows:
Fig. 1 comprises Fig. 1-1, Fig. 1-2, Fig. 1-3 for the schematic diagram of the implementation step of process of the present invention, wherein,
Fig. 1-1 sucks preceding the vacuumizing the preparatory stage of resin for injected rubber hose;
The preparation suction stage of Fig. 1-2 for injected rubber hose is put into the resin of plastic holding device;
Fig. 1-3 is for removing the beginning suction stage behind the stifled thing
Fig. 2 is the structural representation of the process that the embodiment of the invention adopted
Below with reference to drawings and Examples process of the present invention is further described:
Shown in accompanying drawing 1,2, adopt the process of this kind raising vacuum infiltration formed composite material architecture quality to process slab spare, slab spare is of a size of: 60 * 60 * 3 centimetres.On Die and mould plate, lay earlier the rebasing mould template of one deck 3, coated successively gummosis grid 5 in outside and upper strata release cloth 6 with the gummosis section of injected rubber hose 4, be processed with plastic hole 8 on the gummosis section, gummosis grid 5 is the network structures that are sheet shape that are woven into the plastics thread like material, the two layers flow glue-line that gummosis grid 5 and upper strata release cloth 6 are constituted repaves and is set on the mould template 3, product 7 is placed on the upper strata release cloth 6, the position relation of the gummosis section of injected rubber hose 4 and product 7 is, gummosis section is set in parallel in a side of product 7, and distance L between the two should be greater than 50 centimetres.In addition, on product 7, re-lay one deck breathable material layer 9, the thickness of breathable material layer 9 is 3-5 centimetre, at last, covering the vacuum bag 2 that binds on the product 7 again, and with the periphery of vacuum bag 2 and mould template 3 with sealant 1 sealing and fixing on Die and mould plate, like this, this is sealed in product 7 by rebasing mould template 3, in the confined space that the sealant 1 of periphery and the vacuum bag 2 that binds are constituted, during the processing product, using sebific duct 4 before the injecting glue of the bottom of product 7, the suction side of injected rubber hose 4 is sealed with stifled thing 10, earlier above-mentioned confined space and product 7 are evacuated to vacuum, extract the residual air in confined space and the product 7 to greatest extent out, when vacuum reaches 0.09MPa, the resin 11 of plastic holding device 12 is put in the suction side that will be in the injected rubber hose 4 of closed state, makes it guarantee not enter any air in the injected rubber hose 4 before opening, put into resin 11 after, take off the stifled thing 10 of its sealing again, make colloidal materials begin suction.Heavy-gauge sheeting product after machining after testing, its internal soundness is even.Draw by contrast experiment and production, aforesaid operations can make the porosity of product below 1%, and does not adopt the porosity of the product of such method of operating moulding to be at least 5%.In addition, after Non-Destructive Testing, prove, this product resin impregnated the body of whole fabric preformation, quality is good.
Process of the present invention has compared with prior art realized being processed into big thickness product Type, and reduced simultaneously the voids content of product inside, improved the degree of soaking into and uniformity, Product quality is greatly improved.
Claims (2)
1. process that improves vacuum infiltration formed composite material architecture quality, the technological measure that this method is taked mainly comprises: by rebasing mould template (3), be provided with product to be processed (7) in the confined space that the sealant (1) of periphery and the vacuum bag (2) that binds are constituted, be equipped with one deck breathable material layer (9) above the product (7), by the bottom injecting glue of injected rubber hose (4) to product (7), because the outside vacuumizes the suction function that is caused to above-mentioned confined space, the colloidal materials that injects product (7) bottom can upwards soak into member, this process is characterised in that: using sebific duct (4) before the injecting glue of the bottom of product, the suction side of injected rubber hose (4) is sealed with stifled thing (10), above-mentioned confined space and product are evacuated to vacuum, when vacuum reaches 0.09MPa, the resin (11) of plastic holding device (12) is put in the suction side that will be in the injected rubber hose (4) of closed state, take off the stifled thing (3) of its sealing again, make it begin suction, in addition, the position relation of the gummosis section of injected rubber hose (4) and product (7) is, gummosis section is set in parallel in a side of product (7), and distance L between the two should be greater than 50 centimetres.
2. the process of raising vacuum infiltration formed composite material architecture quality according to claim 1 is characterized in that: gummosis grid (5) is a kind of network structure that is sheet shape that is woven into the plastics thread like material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011205768A CN100381272C (en) | 2001-07-24 | 2001-07-24 | Technological process resulting in improved structural quality of vacuum permeation formed composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011205768A CN100381272C (en) | 2001-07-24 | 2001-07-24 | Technological process resulting in improved structural quality of vacuum permeation formed composite material |
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| Publication Number | Publication Date |
|---|---|
| CN1398716A CN1398716A (en) | 2003-02-26 |
| CN100381272C true CN100381272C (en) | 2008-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011205768A Expired - Lifetime CN100381272C (en) | 2001-07-24 | 2001-07-24 | Technological process resulting in improved structural quality of vacuum permeation formed composite material |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108973169B (en) * | 2018-05-31 | 2020-11-27 | 江苏金风科技有限公司 | Vacuum infusion method, auxiliary device, vacuum infusion system and flow guide pipe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU348374A1 (en) * | Э. Б. Калошин, В. Я. Смычков , В. И. Иванов | METHOD OF VACUUM TREATMENT OF POROUS MATERIAL | ||
| US4874456A (en) * | 1988-04-21 | 1989-10-17 | Koyo Disposable Goods Company | Vacuum drum apparatus for providing sanitary articles |
| CN1190927A (en) * | 1995-06-07 | 1998-08-19 | 精算系统有限公司 | Production of large composite structures |
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2001
- 2001-07-24 CN CNB011205768A patent/CN100381272C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU348374A1 (en) * | Э. Б. Калошин, В. Я. Смычков , В. И. Иванов | METHOD OF VACUUM TREATMENT OF POROUS MATERIAL | ||
| US4874456A (en) * | 1988-04-21 | 1989-10-17 | Koyo Disposable Goods Company | Vacuum drum apparatus for providing sanitary articles |
| CN1190927A (en) * | 1995-06-07 | 1998-08-19 | 精算系统有限公司 | Production of large composite structures |
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| CN1398716A (en) | 2003-02-26 |
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