CN1398717A - Technological process for producing large product of vacuum permeation formed composite material - Google Patents
Technological process for producing large product of vacuum permeation formed composite material Download PDFInfo
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- CN1398717A CN1398717A CN 01120577 CN01120577A CN1398717A CN 1398717 A CN1398717 A CN 1398717A CN 01120577 CN01120577 CN 01120577 CN 01120577 A CN01120577 A CN 01120577A CN 1398717 A CN1398717 A CN 1398717A
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Abstract
The present invention is a technological process of producing vacuum-permeation formed composite material for large-size product. Inside a sealed space comprising pad bottom mold board, peripheral sealing putty and top vacuum bag, a product to be processed and a layer of air-previous material over the product are set up, and gum is injected to the bottom of the product with a gum injecting tube. In the case when the produced width is greater than 60 cm, a lengthwise vacuum pipe line with sucking holes is set in parallel to the said end face at the side of the opposite endface. In addition, there is also double-layer of gum flowing net and an upper layer demolding cloth on the mold board, and the product is set on the upper layer demolding cloth. Compared with the existing technology, the present invention realizes the formation of large size product.
Description
Introduction of the present invention be a kind of process that is used for the vacuum infiltration formed composite material of large scale product, it has improved the quality of the large-sized composite material 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.During particularly for large scale product lower surface processing and forming, it is difficult with control that product quality just becomes, particularly when width surpasses 60 centimetres, on width, colloid just can not successfully reach its relative other end sometimes and directly move to top, will there be other end bottom on the width of injected rubber hose some gas tegmentums to be arranged in the inside of product and illegal discharge like this, these places of being wrapped will form dry spot, and especially big more just easy more of width dimensions caused this qualitative defective.So the low voids content that can not soak into fully and reach on the width just becomes technical difficult point.Adopt the practice of traditional handicraft method to be, a plurality of injected rubber hoses placed side by side in the bottom of product, because the effect of vacuum, these injected rubber hoses can be to the both sides of product bottom filling colloid, remedy like this and have only injected rubber hose injecting glue of product one side and make colloid can not reach the shortcoming of product bottom comprehensively, but, owing to be placed with injected rubber hose at the bottom of the product, just make the product finished product become the bottom to form the groove of bar shaped, cause the defective of lower surface, when two surface smoothness of product are all had requirement, make the quality requirement that just can't reach product in this way.
Purpose of the present invention is just at above-mentioned large scale product existing technical difficult point and design the new process that a kind of vacuum infiltration formed composite material is provided in molding process, it has solved the problem of fully soaking into of large scale product on width effectively, guarantee the quality requirement on two surfaces up and down of product simultaneously, improved the quality of the large-sized composite material structure of vacuum infiltration method moulding effectively.
The objective of the invention is to realize by following measure: this kind is used for the process of the vacuum infiltration formed composite material of large scale product, 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, injected rubber hose is arranged on the side of both ends of the surface of the width of product, 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, when the width dimensions of product during greater than 60 centimetres, in above-mentioned confined space, in the width of the product opposite side end face next door position relative with injected rubber hose place end face, be provided with one along vacuum line on the product length direction and that be parallel to this side end face, be processed with suction hole on this vacuum line, and it links to each other with the external vacuum pipeline from the exit in the above-mentioned confined space, in addition, the two layers flow glue-line that gummosis grid and upper strata release cloth are constituted is laid on the mould template, and product is placed on the release cloth of upper strata, both sides on width, this two layers flow glue-line respectively with injected rubber hose and vacuum line communications and liaison mutually.Above-mentioned process is by the check in experiment and production process, particularly for the large scale product, it can both fully intactly be soaked on width, and can reduce the voids content of product inside widely, improve the degree of soaking into and the uniformity of whole product.And avoided in the traditional handicraft owing to the underproof defective of lower surface that many injected rubber hoses cause is set.
The drawing of accompanying drawing is described as follows:
Fig. 1 is the structural representation of the enforcement situation of process of the present invention
Below with reference to drawings and Examples process of the present invention is further described:
Shown in accompanying drawing 1, the process that adopts this kind to be used for the vacuum infiltration formed composite material of large scale product is processed super generous plate, and plate is of a size of: 600 * 600 * 30 millimeters and 1300 * 650 * 30 millimeters.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 the width both ends of the surface of product 7, distance L between the two should be greater than 50 centimetres, in actual production, choose 65,78 or 90 centimetres, effect is relatively good.In addition, on product 7, re-lay one deck breathable material layer 9, the thickness of breathable material layer 9 is 3-5 centimetre, in addition, in the width of the product 7 opposite side end face next door position relative with injected rubber hose place end face, be provided with one along vacuum line 8 on product 7 length directions and that be parallel to this side end face, be processed with suction hole on this vacuum line 8, both sides on width, this two layers flow glue-line respectively with injected rubber hose 4 and vacuum line 8 communications and liaison mutually.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, and it links to each other with the external vacuum pipeline from the exit in the above-mentioned confined space, like this, this is sealed in product 7 in the confined space that is made of the sealant 1 of rebasing mould template 3, periphery and the vacuum bag 2 that binds, and above-mentioned vacuum line 8 links to each other with external vacuum path 10 from the exit in the above-mentioned confined space.During molded article, at first, by the outside above-mentioned confined space is vacuumized and to cause suction function, injecting glue in injected rubber hose 4 again, colloidal materials will flow into the bottom that the two layers flow glue-line that is made of gummosis grid 5 and upper strata release cloth 6 arrives product 7 by the gummosis section of injected rubber hose 4, because effect is drawn in the suction at the other end place of vacuum line 8 on width, colloid can at first successfully reach other end on the width of product 7 along the two layers flow glue-line, and the colloidal materials that evenly and fully is full of product (7) bottom then can upwards soak into whole member under the effect of negative pressure.Heavy-gauge sheeting product after finishing detects through C-scanning, X-ray transmission, and its internal soundness is even, and voids content is less than 1%, and fibre weight content is example with the S-2 glass fibre, can reach 65-68%, and thickness deviation is controlled at below 4%.Its internal soundness is even, does not find overproof hole and dry spot, after Non-Destructive Testing, prove, this product resin impregnated the type body of whole fabric preformation, quality is good.
Process of the present invention has compared with prior art realized the processing to the large scale product Moulding, and reduced simultaneously the voids content of product inside, improved the degree of soaking into and even The property, product quality is greatly improved.
Claims (3)
1. process that is used for the vacuum infiltration formed composite material of large scale product, 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), injected rubber hose (4) is arranged on the side of both ends of the surface of the width of 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: when the width dimensions of product (7) during greater than 60 centimetres, in above-mentioned confined space, in the width of product (7) the opposite side end face next door position relative with injected rubber hose place end face, be provided with one along vacuum line (8) on product (7) length direction and that be parallel to this side end face, this vacuum line is processed with suction hole on (8), and it links to each other with external vacuum path (10) from the exit in the above-mentioned confined space, in addition, the two layers flow glue-line that gummosis grid (5) and upper strata release cloth (6) are constituted is laid on the mould template (3), and product (7) is placed on the upper strata release cloth (6), both sides on width, this two layers flow glue-line respectively with injected rubber hose (4) and vacuum line (8) communications and liaison mutually.
2. the process that is used for the vacuum infiltration formed composite material of large scale product 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.
3. the process that is used for the vacuum infiltration formed composite material of large scale product according to claim 1 is characterized in that: the thickness of the breathable material layer of laying above (9) of product (7) is 3-5 centimetre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011205776A CN1179841C (en) | 2001-07-24 | 2001-07-24 | Technological process for producing large product of vacuum permeation formed composite material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011205776A CN1179841C (en) | 2001-07-24 | 2001-07-24 | Technological process for producing large product of vacuum permeation formed composite material |
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| CN1398717A true CN1398717A (en) | 2003-02-26 |
| CN1179841C CN1179841C (en) | 2004-12-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752608A (en) * | 2008-12-04 | 2010-06-23 | 上海空间电源研究所 | Glue potting method of hydrogen-nickel storage battery of air vehicle |
| CN102001185A (en) * | 2010-09-17 | 2011-04-06 | 连云港中复连众复合材料集团有限公司 | Secondary injection molding process of megawatt level wind turbine blades |
| CN104416920A (en) * | 2013-08-28 | 2015-03-18 | 上海艾郎风电科技发展有限公司 | Method for infusing wind turbine blade girder |
-
2001
- 2001-07-24 CN CNB011205776A patent/CN1179841C/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752608A (en) * | 2008-12-04 | 2010-06-23 | 上海空间电源研究所 | Glue potting method of hydrogen-nickel storage battery of air vehicle |
| CN101752608B (en) * | 2008-12-04 | 2013-09-18 | 上海空间电源研究所 | Glue potting method of hydrogen-nickel storage battery of air vehicle |
| CN102001185A (en) * | 2010-09-17 | 2011-04-06 | 连云港中复连众复合材料集团有限公司 | Secondary injection molding process of megawatt level wind turbine blades |
| CN102001185B (en) * | 2010-09-17 | 2013-01-16 | 连云港中复连众复合材料集团有限公司 | Secondary injection molding process of megawatt level wind turbine blades |
| CN104416920A (en) * | 2013-08-28 | 2015-03-18 | 上海艾郎风电科技发展有限公司 | Method for infusing wind turbine blade girder |
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| CN1179841C (en) | 2004-12-15 |
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