CN102205648A - Vacuum auxiliary forming method suitable for composite sandwich material with embedded damping layer - Google Patents
Vacuum auxiliary forming method suitable for composite sandwich material with embedded damping layer Download PDFInfo
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- CN102205648A CN102205648A CN2011100401056A CN201110040105A CN102205648A CN 102205648 A CN102205648 A CN 102205648A CN 2011100401056 A CN2011100401056 A CN 2011100401056A CN 201110040105 A CN201110040105 A CN 201110040105A CN 102205648 A CN102205648 A CN 102205648A
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Abstract
The invention discloses a vacuum auxiliary forming method suitable for a composite sandwich material with an embedded damping layer. The permeation between an upper surface and a lower surface of the damping layer is solved by utilizing double-face slotted foams, thus the vacuum auxiliary formation of the composite sandwich material with the embedded damping layer can be realized. Through the vacuum auxiliary forming method disclosed by the invention, the vacuum auxiliary formation of the composite sandwich material with the embedded damping layer is realized, and the foundation is established for engineering post-application of the composite sandwich material with the embedded damping layer; the prepared composite material not only has high rigidity, low density and high damping characteristics, but also can be widely applied to parts, such as spaceflight, ships and the like with special requirements on the vibration, and also has wide application prospect and remarkable military benefits; in addition, co-solidification once molding of the damping layer can be realized, and the quality of the prepared composite sandwich material is stable.
Description
Technical field
The present invention relates to a kind of composite material forming technology, particularly a kind of vacuum assisted resin infusion method that is applicable to embedded damping layer core filled composite material.
Background technology
Embedded damping layer core filled composite material is compared with common foam core filled composite material, panel middle berth in levels applies high damping, ultra-thin (0.05 ~ 0.5mm) damping layer, this structure has not only kept core filled composite material high strength, high rigidity, low-density characteristics, and because the existence of damping layer has improved the anti-vibration performance of composite greatly, thereby can expand the use breadth and depth of composite.
The damping layer that the forming technique difficult point of embedded damping layer core filled composite material is to be embedded in the fabric does not have permeability, if adopt traditional hand to stick with paste the method moulding, can solve infiltration problem, but efficient is low, and environmental hazard is big, is unfavorable for promoting.
Adopting the empty auxiliary process of vacuum aided technology is to be lay reinforcing material on die face at preparation foam layer composite, the sealing of die cavity edge is tight, in die cavity, vacuumize, again resin is injected in the die cavity under vacuum action by well-designed resin distribution system.Present Chinese patent 200710021398.7, by one group of parallel groove is set in the foam core material bottom surface, upper surface is provided with permeable medium, high permeating medium type and groove-shaped two kinds of vacuum aided technologies is applied in simultaneously the forming process of composite material sandwich structure.But this forming technique can't solve the infiltration problem of damping layer, causes the fabric at damping layer place to soak into.
This moulding process solves the infiltration of fabric between damping layer and the foam core material by to the two-sided parallel slot of opening of foam core material, and the fabric that applies above the flow-guiding cloth solution damping layer by the shop, top and bottom soaks into, thereby realizes global formation.
Summary of the invention
Technical problem to be solved by this invention provides a kind of vacuum assisted resin infusion method that is applicable to embedded damping layer core filled composite material, by applying flow-guiding cloth in end face, shop, bottom surface, and employing double surface grooving foam, solved because the infiltration of damping layer top and bottom, thereby can realize the vacuum assisted resin infusion of embedded damping layer core filled composite material, solve the overall vacuum assistant formation difficult problem of embedded damping layer core filled composite material.
For the purpose that realizes solving the problems of the technologies described above, the present invention has adopted following technical scheme:
The vacuum assisted resin infusion method that is applicable to embedded damping layer core filled composite material of the present invention, concrete process comprises:
1. lay flow-guiding cloth on one-side mould: the cutting of flow-guiding cloth is decided according to shape of products, and the flow-guiding cloth of wherein placing vacuum-pumping tube one end slightly is shorter than fabric;
2. lay release cloth on flow-guiding cloth, the demoulding for convenience, release cloth needs complete convering;
3. place fabric on the release cloth upper strata, kinds of fibers can be glass fibre, carbon fiber, Kafra fiber, superhigh molecular weight polyethylene fibers and basalt fibre, and fabric construction comprises plain, twill, satin and multi-axial tricot;
4. lay damping layer, damping layer is rubber film or the polyacrylate glue film with high damping properties, film thickness is 0.05mm ~ 0.5mm; At present the matured product that exists comprises the ISD110, ISD112 series of 3M company etc.;
5. lay down fibre fabric once more on damping layer, kinds of fibers can be glass fibre, carbon fiber, Kafra fiber, superhigh molecular weight polyethylene fibers and basalt fibre, and fabric construction comprises plain, twill, satin and multi-axial tricot;
6. lay sandwich foam, the upper and lower surface of foam core material is respectively offered one group of parallel groove, and groove width is 2～5mm, and the degree of depth is 2～4mm, and groove pitch s is 30～50mm; The length of groove begins fluting to stopping apart from the other end 15～25mm for an end that injects resin from foam core material; Foam core material comprises polyvinyl chloride foam, polystyrene foam, polyethylene, polyurethane foam and balsa wood etc.;
7. sandwich top layer of foam symmetry is laid fabric, damping layer, fabric, release cloth, flow-guiding cloth successively; Laying method is with 5. ~ 1. identical;
8. adopt vacuum seal bag film and sealant tape that above-mentioned fabric is sealed;
9. the vacuum pressure in the bag to be sealed film≤-during 0.095Mpa, will inject according to the curable resin composition that prescription mixes;
After resin soaks into fabric fully, sealing injected rubber hose and vacuum tube.
Be cured at last and back curing.
By adopting technique scheme, the present invention has following beneficial effect:
The vacuum assisted resin infusion method that is applicable to embedded damping layer core filled composite material of the present invention, adopt double surface grooving and double-face flow-guiding cloth to solve the vacuum assisted resin infusion of embedded damping layer core filled composite material, lay a good foundation for using after the engineering of embedded damping layer core filled composite material; The composite panel of preparation is owing to increased foam core material, and do not need resin matrix is carried out toughening modifying, therefore also possessed high rigidity, low-density characteristic, the composite panel of preparation that more crucial is is because embedded visco-elastic damping layer, composite panel is waited under the external load being subjected to vibration, can produce the distortion such as shearing, bending of damping layer, thus the more effective lot of energy that loses, absorb vibration, this specific character is that general core filled composite material is not available.Therefore the embedded damping layer core filled composite material of preparation can extensive use has the position of specific (special) requirements with space flight, space flight, naval vessel etc. to vibration, has broad application prospects and military benefit significantly; Adopt the vacuum assistant resin infused technology of embedded damping layer core filled composite material of the present invention can realize the co-curing one-shot forming of damping layer and steady quality.
Description of drawings
Fig. 1 is the two-sided foam core material of opening parallel slot.
Fig. 2 is a composite material sandwich structure vacuum forming technique schematic diagram.
Among the figure, 1. groove; 2. foam core material; 3. mould; 4. fabric; 5. mould cloth; 6. flow-guiding cloth; 7. mozzle; 8. vacuum tube; 9 vacuum bag films; 10. sealant tape.
The specific embodiment
Embodiment 1
The Composite Sandwich structure is of a size of 900mm * 900mm, and foam core material is a polyurethane foam plastics, and thickness is 15mm; Upper and lower panel adopts surface density 220g/m
2S glass satin, thickness all is 4mm after the moulding, damping layer is up and down respectively being placed one deck in the middle of the fabric, model is ISD112 (0.25mm); Resin is the epoxy resin R135 of German Hansen Corp., and curing agent is the R137 of German Hansen Corp..Utilize the vacuum assisted resin infusion scheme of this patent to implement the global formation of composite material sandwich structure.
1. lay flow-guiding cloth on flat plate mold, size is about 860mm * 900mm;
2. lay release cloth on flow-guiding cloth, the release cloth size is about 930mm * 930mm;
3. place 10 layers of S glass satin on release cloth, and make flow-guiding cloth one end distance from fabric edge 50mm;
4. lay damping layer on fabric, damping layer size 900mm * 900mm;
5. 10 layers of S glass of lay satin on damping layer;
6. the sandwich foam of parallel slot was all opened in the lay top and bottom, guaranteed that the direction of groove is the resin flows direction, and groove width is 2mm, and the degree of depth is 2mm, and groove pitch s is 30mm, and the distance that the foam core is not opened groove is 25mm;
7. sandwich top layer of foam fabric, damping layer, flow-guiding cloth, release cloth lay are with 5. ~ 1. identical
8. adopt vacuum seal bag film and sealant tape that above-mentioned fabric is sealed.
9. the vacuum pressure in the bag to be sealed film≤-during 0.095Mpa, close even back according to the ratio compounding of resin and curing agent R135:R137=100:30 and inject.After resin matrix soaks into fabric fully, sealing injected rubber hose and vacuum tube.
10. condition of cure is: the demoulding behind the normal temperature cure 24h, and 60 ℃ solidify 4h then, and 80 ℃ solidify 4h.
Adopt the embedded damping layer core filled composite material of present embodiment making and the composite that same resin, reinforcing material system are made, under identical operating mode, carried out vibration-testing, table 1 is a test result.From the result, adopted composite panel vibration attenuation that this patent makes more than the 10dB, have the better damping effect.And the universal vacuum auxiliary process is owing to solving embedded damping layer vacuum assisted resin infusion, so can't reach this effect.
The composite vibration-testing data that table 1 same resin, reinforcing material system are made
Adopt the invention of this technology to solve damping layer is embedded in the compound material laying layer, and vacuum aided is one-body molded.After adding damping layer, the composite panel damping capacity of making improves greatly.If do not adopt this technology invention, because technological problems, damping layer can not be directly one-body molded.
Claims (6)
1. vacuum assisted resin infusion method that is applicable to embedded damping layer core filled composite material is characterized in that: concrete process comprises:
1. lay flow-guiding cloth on one-side mould: the cutting of flow-guiding cloth is decided according to shape of products, and the flow-guiding cloth of wherein placing vacuum-pumping tube one end slightly is shorter than fabric;
2. lay release cloth on flow-guiding cloth, release cloth needs complete convering;
3. place fabric on the release cloth upper strata;
4. lay damping layer, damping layer is rubber film or the polyacrylate glue film with high damping properties, film thickness is 0.05mm ~ 0.5mm;
5. lay down fibre fabric once more on damping layer;
6. lay sandwich foam, the upper and lower surface of foam core material is respectively offered one group of parallel groove, and groove width is 2～5mm, and the degree of depth is 2～4mm, and groove pitch s is 30～50mm; The length of groove begins fluting to stopping apart from the other end 15～25mm for an end that injects resin from foam core material;
7. sandwich top layer of foam symmetry is laid fabric, damping layer, fabric, release cloth, flow-guiding cloth successively; Laying method is with 5. ~ 1. identical;
8. adopt vacuum seal bag film and sealant tape that above-mentioned fabric is sealed.
2. the vacuum pressure in the bag 9. to be sealed film≤-during 0.095Mpa, will inject according to the curable resin composition that prescription mixes.
3. after resin soaks into fabric fully, seal injected rubber hose and vacuum tube;
Be cured at last and back curing.
4. according to the described vacuum assisted resin infusion method of claim 1, it is characterized in that: the fiber of described fabric is glass fibre, carbon fiber, Kafra fiber or superhigh molecular weight polyethylene fibers and basalt fibre, and fabric construction is plain, twill, satin or multi-axial tricot.
5. according to the described vacuum assisted resin infusion method of claim 1, it is characterized in that: described damping layer is ISD110, the ISD112 product of 3M company.
6. according to the described vacuum assisted resin infusion method of claim 1, it is characterized in that: described foam core material is polyvinyl chloride foam, polystyrene foam, polyethylene, polyurethane foam or balsa wood.
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| CN2011100401056A CN102205648A (en) | 2011-02-18 | 2011-02-18 | Vacuum auxiliary forming method suitable for composite sandwich material with embedded damping layer |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072284A (en) * | 2012-12-06 | 2013-05-01 | 中国船舶重工集团公司第七二五研究所 | Reinforcing ribs contained sandwich structure composite material and its making method |
| CN104309133A (en) * | 2014-08-19 | 2015-01-28 | 山东英特力新材料有限公司 | A preparing method of a composite-material pentahedral rectangular cabin |
| CN104339662A (en) * | 2013-07-29 | 2015-02-11 | 宝马股份公司 | Method for manufacturing fiber compsite setting unit and fiber composite setting unit |
| CN104476780A (en) * | 2014-12-19 | 2015-04-01 | 连云港中复连众复合材料集团有限公司 | Vacuum infusion and flow guide system and infusion and flow guide method for reinforcing plate of wind turbine blade |
| CN105300195A (en) * | 2014-07-01 | 2016-02-03 | 中国科学院过程工程研究所 | Guided missile with damping particle interlayer structure |
| CN107839254A (en) * | 2017-11-21 | 2018-03-27 | 江苏美龙航空部件有限公司 | A kind of preparation method and mould of glass fibre bend pipe |
| CN110065245A (en) * | 2019-05-06 | 2019-07-30 | 衡阳泰豪通信车辆有限公司 | A kind of integrated molding cabin structure and its forming method having stealthy function |
| CN110328915A (en) * | 2019-07-05 | 2019-10-15 | 鲁东大学 | A kind of carbon fibre material ship shell and its manufacturing method |
| CN110341213A (en) * | 2019-08-07 | 2019-10-18 | 青岛理工大学 | The moulding process and molded part of co-curing staple fiber resin based damping composite material |
| CN110625843A (en) * | 2018-06-25 | 2019-12-31 | 科思创德国股份有限公司 | Drying method of sandwich material in polyurethane composite material |
| CN115012544A (en) * | 2022-07-15 | 2022-09-06 | 泰山玻璃纤维有限公司 | High-strength wear-resistant puncture-resistant vacuum heat-insulation composite board and production method thereof |
| CN115091791A (en) * | 2022-06-17 | 2022-09-23 | 中国船舶重工集团公司第七二五研究所 | Vacuum auxiliary forming positioning tool and process |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072284A (en) * | 2012-12-06 | 2013-05-01 | 中国船舶重工集团公司第七二五研究所 | Reinforcing ribs contained sandwich structure composite material and its making method |
| CN103072284B (en) * | 2012-12-06 | 2015-12-02 | 中国船舶重工集团公司第七二五研究所 | A kind of sandwich structure composite material and manufacture method thereof containing strengthening muscle |
| CN104339662A (en) * | 2013-07-29 | 2015-02-11 | 宝马股份公司 | Method for manufacturing fiber compsite setting unit and fiber composite setting unit |
| CN105300195A (en) * | 2014-07-01 | 2016-02-03 | 中国科学院过程工程研究所 | Guided missile with damping particle interlayer structure |
| CN104309133A (en) * | 2014-08-19 | 2015-01-28 | 山东英特力新材料有限公司 | A preparing method of a composite-material pentahedral rectangular cabin |
| CN104476780A (en) * | 2014-12-19 | 2015-04-01 | 连云港中复连众复合材料集团有限公司 | Vacuum infusion and flow guide system and infusion and flow guide method for reinforcing plate of wind turbine blade |
| CN107839254A (en) * | 2017-11-21 | 2018-03-27 | 江苏美龙航空部件有限公司 | A kind of preparation method and mould of glass fibre bend pipe |
| CN110625843A (en) * | 2018-06-25 | 2019-12-31 | 科思创德国股份有限公司 | Drying method of sandwich material in polyurethane composite material |
| CN110065245A (en) * | 2019-05-06 | 2019-07-30 | 衡阳泰豪通信车辆有限公司 | A kind of integrated molding cabin structure and its forming method having stealthy function |
| CN110328915A (en) * | 2019-07-05 | 2019-10-15 | 鲁东大学 | A kind of carbon fibre material ship shell and its manufacturing method |
| CN110341213A (en) * | 2019-08-07 | 2019-10-18 | 青岛理工大学 | The moulding process and molded part of co-curing staple fiber resin based damping composite material |
| CN115091791A (en) * | 2022-06-17 | 2022-09-23 | 中国船舶重工集团公司第七二五研究所 | Vacuum auxiliary forming positioning tool and process |
| CN115012544A (en) * | 2022-07-15 | 2022-09-06 | 泰山玻璃纤维有限公司 | High-strength wear-resistant puncture-resistant vacuum heat-insulation composite board and production method thereof |
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