CN1179840C - Technological process for producing thick product of vacuum permeation formed composite material - Google Patents
Technological process for producing thick product of vacuum permeation formed composite material Download PDFInfo
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- CN1179840C CN1179840C CNB01120575XA CN01120575A CN1179840C CN 1179840 C CN1179840 C CN 1179840C CN B01120575X A CNB01120575X A CN B01120575XA CN 01120575 A CN01120575 A CN 01120575A CN 1179840 C CN1179840 C CN 1179840C
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Abstract
The present invention provides a technology method of vacuum permeation forming composite materials used for a manufacture member with large thickness. The manufacture member to be formed 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 piece, and rubber injection is carried out towards the bottom of the manufacture member by a rubber injection pipe; when the thickness of the manufacture member is larger than 20 centimeters, the rubber flowing section of the rubber injection pipe is placed in the sealing space and is arranged on one side of the manufacture member in parallel; the rubber flowing section of the rubber injection pipe leaves the manufacture member by a section of distance L which is supposed to be larger than 50 centimeters; rubber outlet holes are machined on the rubber flowing section of the rubber injection pipe, and a rubber flowing net and upper layer mold releasing cloth are orderly coated and applied outside the rubber flowing section of the rubber injection pipe; a double-layer rubber flowing layer composed of the rubber flowing net and the upper layer mold-releasing cloth is also laid on the mold plate of a mold, and the manufacture member is placed on the upper layer mold releasing cloth. 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 is used for the vacuum infiltration formed composite material of big thickness product, it has improved the quality of the big thickness 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 template.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 big thickness product lower surface processing and forming, it is difficult with control that product quality just becomes, particularly when thickness surpasses 20 centimetres, on the thickness direction soak into fully and low voids content just becomes technical difficult point, adopt the traditional handicraft method just can't reach the quality requirement of product.
Purpose of the present invention is just at above-mentioned big thickness 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 improved the quality of the big thickness composite structure of vacuum infiltration method moulding effectively, in addition, this kind process need not carried out injecting glue by borehole yet on blank, thus sinking of having occurred around having avoided in the hole and cause the waste of blank material.
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 big thickness 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 formed 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 whole member, and process of the present invention is characterised in that, when the thickness of product during greater than 20 centimetres, be placed on the gummosis section of injected rubber hose in the above-mentioned confined space and be set in parallel in a side of product, leave product one segment distance L, above-mentioned distance L should be greater than 50 centimetres, be processed with the plastic hole on the gummosis section of above-mentioned injected rubber hose, coated successively in the outside of the gummosis section of injected rubber hose have gummosis grid and a upper strata release cloth, the two layers flow glue-line that gummosis grid and upper strata release cloth are constituted also is laid on the mould template, and product is placed on the release cloth of upper strata.For big thickness product, the placement location of the gummosis section of injected rubber hose must leave product one segment distance, otherwise resin can flow on its upper surface from the edge of gummosis pipe by product very soon, will inside be difficult to the lid of the gas in the product blank to discharge like this, the gas place of being wrapped will form dry spot, and phenomenon is particularly evident for the bigger product of gauge like this.So product is thick more, the placement location of the gummosis section of injected rubber hose leaves the distance of product will be far away more.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.And avoided the waste that borehole partly must be cut down the blank material that produces that causes owing to borehole in the traditional handicraft.
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 big thickness product is processed slab spare, and slab spare is of a size of: 60 * 60 * 3 centimetres and 130 * 60 * 3 centimetres.On the mould template 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, 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, re-lay one deck breathable material layer 9 on product 7, the thickness of breathable material layer (9) is the 3-5 millimeter.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 the mould template 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, 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 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, and the colloidal materials that injects product (7) bottom can upwards soak into whole member under the effect of negative pressure.Heavy-gauge sheeting product after machining 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%.Do not find overproof hole and dry spot, 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 (4)
1. process that is used for the vacuum infiltration formed composite material of big thickness product, the technological measure that this method is taked mainly comprises: by rebasing mould template (3), be provided with product to be formed (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: when the thickness of product (7) during greater than 20 centimetres, be placed on the gummosis section of injected rubber hose (4) in the above-mentioned confined space and be set in parallel in a side of product (7), leave product (7) one segment distance L, above-mentioned distance L should be greater than 50 centimetres, be processed with plastic hole (8) on the gummosis section of above-mentioned injected rubber hose (4), coated successively in the outside of the gummosis section of injected rubber hose (4) have gummosis grid (5) and a upper strata release cloth (6), the two layers flow glue-line that gummosis grid (5) and upper strata release cloth (6) are constituted also is laid on the mould template (3), and product (7) is placed on the upper strata release cloth (6).
2. the process that is used for the vacuum infiltration formed composite material of big thickness 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 big thickness product according to claim 1 is characterized in that: the numerical value of distance L is 65,78 or 90 centimetres.
4. the process that is used for the vacuum infiltration formed composite material of big thickness product according to claim 1 is characterized in that: the thickness of the breathable material layer of laying above (9) of product (7) is the 3-5 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01120575XA CN1179840C (en) | 2001-07-24 | 2001-07-24 | Technological process for producing thick product of vacuum permeation formed composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01120575XA CN1179840C (en) | 2001-07-24 | 2001-07-24 | Technological process for producing thick product of vacuum permeation formed composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1398715A CN1398715A (en) | 2003-02-26 |
| CN1179840C true CN1179840C (en) | 2004-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB01120575XA Expired - Lifetime CN1179840C (en) | 2001-07-24 | 2001-07-24 | Technological process for producing thick product of vacuum permeation formed composite material |
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| CN (1) | CN1179840C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101623932B (en) * | 2008-07-10 | 2015-06-24 | 上海艾郎风电科技发展有限公司 | Blade root end pouring device for wind mill |
| 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 |
| CN102166826B (en) * | 2011-01-19 | 2014-05-07 | 中国科学院宁波材料技术与工程研究所 | Forming process of fiber reinforced thermoplastic composite material |
| CN102975261A (en) * | 2012-11-22 | 2013-03-20 | 昆山华风风电科技有限公司 | Cork wood material molding technology and device |
| CN104416919A (en) * | 2013-08-28 | 2015-03-18 | 上海艾郎风电科技发展有限公司 | Method for integrally forming master mold and girder of wind turbine blade |
| CN114904712B (en) * | 2021-08-30 | 2023-06-06 | 安越环境科技股份有限公司 | Glue filling device for glass fiber hose and glue filling method for glass fiber hose |
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2001
- 2001-07-24 CN CNB01120575XA patent/CN1179840C/en not_active Expired - Lifetime
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| CN1398715A (en) | 2003-02-26 |
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