CN102555237A - Method for producing carbon fiber shell and thermal expansion component and shell structure thereof - Google Patents
Method for producing carbon fiber shell and thermal expansion component and shell structure thereof Download PDFInfo
- Publication number
- CN102555237A CN102555237A CN2012100006598A CN201210000659A CN102555237A CN 102555237 A CN102555237 A CN 102555237A CN 2012100006598 A CN2012100006598 A CN 2012100006598A CN 201210000659 A CN201210000659 A CN 201210000659A CN 102555237 A CN102555237 A CN 102555237A
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- carbon fiber
- release membrance
- expansion element
- mould release
- carbon cloth
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- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
Abstract
The invention discloses a method for producing a carbon fiber shell. First, carbon fiber cloth is covered on the outer surface of an internal mold, then, an external mold is closed, and the carbon fiber cloth is clamped in a mold cavity between the internal mold and the external mold, wherein a slice-shaped thermal expansion component is further arranged between the carbon fiber cloth and the inner wall of the mold cavity. The thermal expansion component comprises a release liner capable of being stripped and an expansion diaphragm adhered to the surface of the release liner, and the width of the mold cavity is larger than the total thickness of the laminated carbon fiber cloth before curing and the thermal expansion component. The carbon fiber cloth is then led to be heated and cured in the mold cavity by heating. During the curing process, the expansion diaphragm is heated and expanded to provide internal pressure to enable the carbon fiber cloth to be tightly attached to the inner wall of one side of the mold cavity. After curing, the mold is opened to take out the product, the release liner is torn down, and the carbon fiber shell is obtained. The carbon fiber cloth in the mold cavity is free of pressure brought by the mold so that texture structures of the laminated carbon fiber cloth cannot be damaged and the defect of flash cannot occur at the position of a parting line.
Description
Technical field
The present invention relates to carbon fiber housing art, refer in particular to a kind of method and used heat expansion element and the shell structure that is obtained for preparing the carbon fiber housing.
Background technology
Carbon fiber is claimed carbon fibre again, makes a general reference the material that some form with carbon fiber knit or MULTILAYER COMPOSITE.Carbon fiber is the excellent new material of a kind of mechanical property, and its proportion is less than 1/4 of steel, and carbon fiber resin composite material tensile strength all more than 3500Mpa, is 7 ~ 9 times of steel generally, and tensile modulus of elasticity is that 23000 ~ 43000Mpa also is higher than steel.Because it is not only light but also hard, so its purposes very extensively.Common major product has: carbon fiber golf clubs, carbon badminton racket, carbon fibre web racket, carbon fiber shuttlecock, carbon fiber bow and arrow, carbon fiber aircraft takeoffs and landings frame plate, carbon fiber military computer notebook computer casing, carbon fiber support, carbon fiber fishing rod, carbon fiber automobile case, carbon fiber automotive hub, carbon fiber phone housing, carbon fiber instrument and meter case, carbon fiber audio amplifier, carbon fiber plenum chamber, carbon fiber suitcase etc.
Wherein, With regard to carbon fiber product shell (comprising electronic product casing, cabinet shell etc.) preparation technology; Existing way mainly is: at first with carbon cloth preimpregnation in resin; The carbon cloth of then resin being crossed in preimpregnation utilizes mould to strike out needed shape, and the carbon cloth with moulding is heating and curing again, forms shell; It is in the process that is heating and curing, and is as shown in Figure 1, the die cavity that need carbon cloth 40 placed mould 20 and external mold 51 within the heating mould, form between 52, and the width C of its die cavity is less than the thickness of the carbon cloth 40 of lamination before solidifying usually.The thickness of carbon cloth 40 is 1.3mm before for example solidifying, for carbon cloth 40 THICKNESS CONTROL after will solidifying at 1.0mm, the width C of its die cavity need be designed to 1.0mm, controls the thickness of carbon fiber housing with the pressure that utilizes wall within external mold 51,52 or the internal mold 20.Yet; Because housing has a plurality of forming surface usually, therefore for making things convenient for the demoulding of product, need be to each forming surface setting moving external mold 51,52 separately; So; Under the squeezing action of two adjacent external molds to carbon cloth 40, not only can between two external molds, can produce serious overlap defective in the die parting line place, handle to following process and cause puzzlement; And carbon cloth is squeezed to the slippage of die parting line place, destroyed the texture structure of carbon cloth and causes the structural strength decay, influences product quality.
Summary of the invention
Main purpose of the present invention provides a kind of method of carbon fiber housing and shell structure that is obtained thereof of preparing, and solves existing carbon fiber housing be heating and curing overlap defective and the ruined problem of texture structure in the process.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of method for preparing the carbon fiber housing; At first carbon cloth is covered in the outer surface of an internal mold, the external mold that then closes is sandwiched in the die cavity between internal mold and the external mold carbon cloth; Wherein, Between carbon cloth and mould intracavity wall face, also be provided with a laminar heat expansion element, this heat expansion element includes a strippable mould release membrance and the inflatable membrane that is attached to this mould release membrance surface, and the width of this die cavity is greater than the thickness of the thickness+heat expansion element of lamination carbon cloth before solidifying; Heating makes carbon cloth in die cavity, receive heat cure then; In the process that is heating and curing; This inflatable membrane expanded by heating provides an internal pressure to make carbon cloth be close to die cavity one side inwall, opens the mould taking-up product and the mould release membrance of tearing after the curing and promptly processes this carbon fiber housing.
Preferably, said mould release membrance is between inflatable membrane and carbon cloth, and when tearing this mould release membrance, this inflatable membrane is also taken off from the carbon fiber housing with mould release membrance.
Preferably, said inflatable membrane is between mould release membrance and carbon cloth; When tearing this mould release membrance, one-body molded being connected in of this inflatable membrane forms the buffering foaming layer on the carbon fiber housing.
Preferably, said internal mold is the foaming mould.
Preferably, the identical but undersized of the hull shape of said internal mold and required preparation.
Preferably, during the order of said stacked carbon cloth and heat expansion element, earlier the heat expansion element is covered on the internal mold, and then carbon cloth is stacked and placed on the heat expansion element piecewise, so between external mold internal face and carbon cloth, be formed with the gap.
A kind of carbon fiber shell structure includes laminal carbon fiber housing, and the one curing molding is attached with a buffering foaming layer on the surface of this carbon fiber housing.
Preferably, said buffering foaming layer is attached to the inner surface or the outer surface of carbon fiber housing.
Preferably, said buffering foaming layer is that the heat expansion element post-foaming that is heated forms, and this heat expansion element includes a strippable mould release membrance and the inflatable membrane that is attached to this mould release membrance surface.
A kind ofly prepare the heat expansion element that the carbon fiber housing is used, this heat expansion element includes a strippable mould release membrance and the inflatable membrane that is attached to this mould release membrance surface.
The present invention compared with prior art has tangible advantage and beneficial effect; Particularly; Can know that by technique scheme it utilizes the heat expansion element so that the carbon cloth internal pressure in the process that is heating and curing to be provided, and makes carbon cloth in die cavity, can remove the pressure that mould brings from; Make the unlikely pressurized slippage of carbon cloth of lamination; Thereby the texture structure of unlikely destruction carbon cloth and produce overlap at the die parting line place is thoroughly avoided the relaxation phenomenon of carbon cloth structural strength and the appearance of overlap problem, effectively guarantees product structure intensity and quality.And through one curing molding on the carbon fiber surface of shell be attached with one the buffering foaming layer, utilize this buffering foaming layer to improve the structural strength of carbon fiber housing, the shock resistance of enhanced carbon fiber housing, counter-bending ability.And this buffering foaming layer is formed by heat foamable through the heat expansion element of being made up of strippable mould release membrance and the inflatable membrane that is attached to this mould release membrance surface, can make buffering send out born of the same parents' layer and be attached to surface of shell more uniform thickness.
For more clearly setting forth architectural feature of the present invention and effect, come the present invention is elaborated below in conjunction with accompanying drawing and specific embodiment.
Description of drawings
Fig. 1 is the existing schematic cross-section of carbon fiber housing in the process of being heating and curing;
Fig. 2 is the suitcase housing product schematic perspective view of the present invention's embodiment;
Fig. 3 is the sketch map of stacked heat expansion element of the present invention's embodiment and carbon cloth order;
Fig. 4 is behind the present invention's the embodiment matched moulds, the local enlarged diagram before solidifying;
Fig. 5 is the view after the curing of Fig. 4;
Fig. 6 is partial cross section's enlarged diagram of the present invention's shell structure that embodiment obtains.
The accompanying drawing identifier declaration:
10, carbon fiber suitcase case top lid 11, base plate
12, side plate 20, internal mold
30, heat expansion element 31, mould release membrance
32, resin inflatable membrane 40, carbon cloth
41, ground floor carbon cloth 42, second layer carbon cloth
43,44,45,46 each layer carbon cloth
51, first external mold 52, second external mold.
The specific embodiment
Please extremely shown in Figure 4 with reference to Fig. 2; Be one of the present invention preferred embodiment; It is the example its preparation method that is elaborated with a kind of carbon fiber suitcase case top lid 10, and as shown in Figure 2, this suitcase case top lid 10 is the hollow shell of cuboid flake structure; Four side plates 12 that this loam cake 10 has a base plate 11 and is provided with around this base plate periphery, the step of making this loam cake 10 is following:
At first, prepare one with the basic identical but internal mold 20 of undersized of loam cake shape, this internal mold 20 can be the foaming model.
Then, prepare a heat expansion element 30, this heat expansion element 30 comprises strippable mould release membrance 31 and the resin inflatable membrane 32 that is attached to these mould release membrance 31 surfaces.This heat expansion element 30 is carried out cutting by size, to adapt to internal mold 20 outer surface size and shapes.
Then, this heat expansion element 30 is covered the surface of aforementioned internal mold 20, noting must be smooth as far as possible when pasting, and reduces gauffer.In the process that pastes, can be with mould release membrance 31 down and resin inflatable membrane 32 contacts with carbon cloth last; Also can be with resin inflatable membrane 32 down and mould release membrance 31 intercepts between resin inflatable membrane 32 and carbon cloth 40 last.
Next, with 90 °+0 ° of ground floor, 71cm x 57cm pastes on the heat expansion element 30 on the aforementioned internal mold through the carbon cloth 41 of preimpregnation; Paste in the process; Corner etc. is partly carried out suitable cutting, and on the corner carry out oppositely excising for unnecessary carbon cloth pasting.
Wherein, Can paste the black Foamex bar of some 4cm x 4cm around the breach for pull bar in the suitcase housing or wheel frame place; These Foamex bars also can correspondence be covered on internal mold back fin or its side circle shape crest line, play the effect to the marginal position reinforcement.
Then, 90 °+0 ° of the second layer, 71cm x 57cm carbon fibre initial rinse fabric 42 are pasted on aforementioned ground floor carbon fibre initial rinse fabric 41.So repeat multilayer carbon fibre initial rinse fabric 43,44,45,46 laminated types are pasted; The number needs of the carbon fibre initial rinse fabric 40 of lamination will be adjusted according to the needs of product actual (real) thickness and intensity; And; Foundation needs, and the cutting position or the direction of each layer carbon fibre initial rinse fabric 40 can be different, specifically decide according to shell structure.
After waiting to have pasted all carbon fibre initial rinse fabrics, preferably can also add one deck glassine paper at skin.
After the lamination of completion front pastes work, just can go into mould and be heating and curing.
Partial cross section's enlarged diagram after being matched moulds like Fig. 4, before solidifying, the external mold 50 that closes is sandwiched in the die cavity between internal mold 20 and the external mold 50 carbon cloth 40 and heat expansion element 30.Wherein, the width C of die cavity need be greater than the thickness A of the thickness B+heat expansion element 30 of all carbon cloths 40 before solidifying between this internal mold 20 and the external mold 50, for example, and aforementioned A=0.35mm, B=1.0mm, C=1.5mm.Make and maintain a gap 60 between carbon cloth and the external mold inwall.Make like this be heating and curing before carbon cloth 40 do not receive the extruding of internal mold and external mold, thereby can avoid the carbon cloth slippage and destroy its texture structure, unlikely its structural strength that makes decays.
Heating mould makes carbon cloth 40 in die cavity, receive heat cure then; In the process that is heating and curing; Resin inflatable membrane 32 expanded by heating in this heat expansion element 30 provide an internal pressure to make carbon cloth 40 be close to die cavity external mold 50 inwalls, and are as shown in Figure 5, wherein maintain a gap 60 between carbon cloth and the external mold inwall and disappear; And the thickness A of heat expansion element thickens to 0.7mm, and the thickness of carbon cloth 40 is contracted to 0.8mm.
Just can open mould after the curing and take out product.After taking out product, next also need the carbon fiber housing of mould release membrance 31 after solidify be torn.When mould release membrance 31 was sandwiched between carbon cloth 40 and the resin inflatable membrane 32, this resin inflatable membrane 32 was taken off from the carbon fiber housing thereupon; When mould release membrance 31 outside and resin inflatable membrane 32 when being sandwiched between carbon cloth 40 and the mould release membrance 31; This resin inflatable membrane 32 will be connected to form the buffering foaming layer with carbon cloth 40 is one-body molded; Like Fig. 5, this buffering foaming layer is attached to effects such as the shock-absorbing that can be used for housing on the carbon cloth 40, damping.
What need special instruction is: in the previous embodiment; Also can be with pasting the order inversion of heat expansion element 30 with carbon cloth 40; Promptly earlier multilayer carbon cloth 40 is stacked and placed on the internal mold 20; And then on this carbon cloth 40, paste heat expansion element 30, and can the one-body molded connection one buffering foaming layer in the outside of housing.
In sum; Design focal point of the present invention is, it utilizes the heat expansion element so that the carbon cloth internal pressure in the process that is heating and curing to be provided, and makes carbon cloth in die cavity, can remove the pressure that mould brings from; Make the unlikely pressurized slippage of carbon cloth of lamination; Thereby the texture structure of unlikely destruction carbon cloth and produce overlap at the die parting line place is thoroughly avoided the relaxation phenomenon of carbon cloth structural strength and the appearance of overlap problem, effectively guarantees product structure intensity and quality.
The above; It only is preferred embodiment of the present invention; Be not that technical scope of the present invention is done any restriction, so every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any trickle modification, equivalent variations and modification that above embodiment did.
Claims (10)
1. method for preparing the carbon fiber housing; It is characterized in that: the outer surface that at first carbon cloth is covered in an internal mold; External mold then closes; Carbon cloth is sandwiched in the die cavity between internal mold and the external mold, wherein, between carbon cloth and mould intracavity wall face, also is provided with a laminar heat expansion element; This heat expansion element includes a strippable mould release membrance and the inflatable membrane that is attached to this mould release membrance surface, and the width of this die cavity is greater than the thickness of the thickness+heat expansion element of lamination carbon cloth before solidifying; Heating makes carbon cloth in die cavity, receive heat cure then; In the process that is heating and curing; This inflatable membrane expanded by heating provides an internal pressure to make carbon cloth be close to die cavity one side inwall, opens the mould taking-up product and the mould release membrance of tearing after the curing and promptly processes this carbon fiber housing.
2. the method for preparing the carbon fiber housing according to claim 1 is characterized in that: said mould release membrance is between inflatable membrane and carbon cloth, and when tearing this mould release membrance, this inflatable membrane is also taken off from the carbon fiber housing with mould release membrance.
3. the method for preparing the carbon fiber housing according to claim 1 is characterized in that: said inflatable membrane is between mould release membrance and carbon cloth; When tearing this mould release membrance, one-body molded being connected in of this inflatable membrane forms the buffering foaming layer on the carbon fiber housing.
4. the method for preparing the carbon fiber housing according to claim 1 is characterized in that: said internal mold is the foaming mould.
5. the method for preparing the carbon fiber housing according to claim 1 is characterized in that: the identical but undersized of the hull shape of said internal mold and required preparation.
6. the method for preparing the carbon fiber housing according to claim 1; It is characterized in that: during the order of said stacked carbon cloth and heat expansion element; Earlier the heat expansion element is covered on the internal mold; And then carbon cloth is stacked and placed on the heat expansion element piecewise, so between external mold internal face and carbon cloth, be formed with the gap.
7. a carbon fiber shell structure includes laminal carbon fiber housing, it is characterized in that: the one curing molding is attached with a buffering foaming layer on the surface of this carbon fiber housing.
8. carbon fiber shell structure according to claim 7 is characterized in that: said buffering foaming layer is attached to the inner surface or the outer surface of carbon fiber housing.
9. carbon fiber shell structure according to claim 7 is characterized in that: said buffering foaming layer is that the heat expansion element post-foaming that is heated forms, and this heat expansion element includes a strippable mould release membrance and the inflatable membrane that is attached to this mould release membrance surface.
10. one kind prepares the heat expansion element that the carbon fiber housing is used, and it is characterized in that: this heat expansion element includes a strippable mould release membrance and the inflatable membrane that is attached to this mould release membrance surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210000659.8A CN102555237B (en) | 2012-01-04 | 2012-01-04 | Method for producing carbon fiber shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210000659.8A CN102555237B (en) | 2012-01-04 | 2012-01-04 | Method for producing carbon fiber shell |
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| CN102555237A true CN102555237A (en) | 2012-07-11 |
| CN102555237B CN102555237B (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210000659.8A Expired - Fee Related CN102555237B (en) | 2012-01-04 | 2012-01-04 | Method for producing carbon fiber shell |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103660260A (en) * | 2013-01-18 | 2014-03-26 | 隆扬电子（昆山）有限公司 | Mold for forming P-type foam |
| CN104626608A (en) * | 2015-01-27 | 2015-05-20 | 溧阳二十八所系统装备有限公司 | Integral molding process for light portable carbon fiber box |
| CN104626615A (en) * | 2013-11-12 | 2015-05-20 | 明安国际企业股份有限公司 | Manufacturing method of composite material housing |
| TWI499499B (en) * | 2013-10-07 | 2015-09-11 | Advanced Int Multitech Co Ltd | Method of manufacturing composite shell |
| CN106796205A (en) * | 2014-10-30 | 2017-05-31 | 三菱重工业株式会社 | The manufacture method of artificial defect material and FRP structures |
| CN111848203A (en) * | 2020-07-29 | 2020-10-30 | 上海大学绍兴研究院 | Method and die for net size forming of carbon fiber needling preform |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW202407B (en) * | 1992-01-31 | 1993-03-21 | Yea Tay Ent Co Ltd | Method of preparing the racket frame |
| CN1103370A (en) * | 1993-11-04 | 1995-06-07 | 哈尔滨飞机制造公司 | Bicycle frame with carbon fiber composite structure |
| JP2003200832A (en) * | 2001-10-23 | 2003-07-15 | Yamaha Corp | Steering wheel |
| CN1807074A (en) * | 2005-01-21 | 2006-07-26 | 明安国际企业股份有限公司 | Composite material golf cue head production method and its forming mould |
| CN101041265A (en) * | 2006-03-24 | 2007-09-26 | 王景辉 | Method for producing product having non-conventional type shell formed by carbon fiber |
| CN101485502A (en) * | 2008-01-14 | 2009-07-22 | 王泽平 | Integrated molding safety helmet and method for producing the same |
| CN202448354U (en) * | 2012-01-04 | 2012-09-26 | 杜少川 | Carbon fiber shell structure |
-
2012
- 2012-01-04 CN CN201210000659.8A patent/CN102555237B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW202407B (en) * | 1992-01-31 | 1993-03-21 | Yea Tay Ent Co Ltd | Method of preparing the racket frame |
| CN1103370A (en) * | 1993-11-04 | 1995-06-07 | 哈尔滨飞机制造公司 | Bicycle frame with carbon fiber composite structure |
| JP2003200832A (en) * | 2001-10-23 | 2003-07-15 | Yamaha Corp | Steering wheel |
| CN1807074A (en) * | 2005-01-21 | 2006-07-26 | 明安国际企业股份有限公司 | Composite material golf cue head production method and its forming mould |
| CN101041265A (en) * | 2006-03-24 | 2007-09-26 | 王景辉 | Method for producing product having non-conventional type shell formed by carbon fiber |
| CN101485502A (en) * | 2008-01-14 | 2009-07-22 | 王泽平 | Integrated molding safety helmet and method for producing the same |
| CN202448354U (en) * | 2012-01-04 | 2012-09-26 | 杜少川 | Carbon fiber shell structure |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103660260A (en) * | 2013-01-18 | 2014-03-26 | 隆扬电子（昆山）有限公司 | Mold for forming P-type foam |
| TWI499499B (en) * | 2013-10-07 | 2015-09-11 | Advanced Int Multitech Co Ltd | Method of manufacturing composite shell |
| CN104626615A (en) * | 2013-11-12 | 2015-05-20 | 明安国际企业股份有限公司 | Manufacturing method of composite material housing |
| CN106796205A (en) * | 2014-10-30 | 2017-05-31 | 三菱重工业株式会社 | The manufacture method of artificial defect material and FRP structures |
| CN104626608A (en) * | 2015-01-27 | 2015-05-20 | 溧阳二十八所系统装备有限公司 | Integral molding process for light portable carbon fiber box |
| CN104626608B (en) * | 2015-01-27 | 2019-03-08 | 溧阳二十八所系统装备有限公司 | A kind of light-duty carbon fiber carrying box integral forming technique |
| CN111848203A (en) * | 2020-07-29 | 2020-10-30 | 上海大学绍兴研究院 | Method and die for net size forming of carbon fiber needling preform |
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| CN102555237B (en) | 2015-05-20 |
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