CN105346099B - A kind of preparation method of carbon fibre composite thin-wall curve pipe fitting - Google Patents
A kind of preparation method of carbon fibre composite thin-wall curve pipe fitting Download PDFInfo
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- CN105346099B CN105346099B CN201510718040.4A CN201510718040A CN105346099B CN 105346099 B CN105346099 B CN 105346099B CN 201510718040 A CN201510718040 A CN 201510718040A CN 105346099 B CN105346099 B CN 105346099B
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- airbag
- carbon fibre
- foam core
- pipe fitting
- fibre composite
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
Abstract
The invention provides a kind of preparation method of carbon fibre composite thin-wall curve pipe fitting, this method comprises the following steps：First, foam core moulds are fitted into airbag, vacuumize process then are carried out to airbag using vavuum pump, until making airbag closely be coated on outside foam core moulds；2nd, prepreg is uniformly wrapped on outside airbag；3rd, prepreg is loaded in steel external mold, is then placed in baking oven and heats, and compressed air is passed through into airbag using air compressor in heating process, solidify prepreg, the demoulding of being deflated after solidification, obtain carbon fibre composite thin-wall curve pipe fitting.The present invention controls the interior shape face of product using foam core moulds, utilize the external surface of steel external mold control product, have the advantages that product morphology controllable is strong, surface state is bright and clean, mechanical property is preferable, simple economy, suitable for continuous length, the shaping of large scale, shaped form tubing products.
Description
Technical field
The invention belongs to carbon fiber composite material article field shaping technique, and in particular to a kind of carbon fibre composite is thin
The preparation method of wall curve pipe fitting.
Background technology
Carbon fibre composite (CFRP) has excellent mechanical performance and physical property, is applied to Aeronautics and Astronautics, soldier
The important feature material in the fields such as device, electronics, carbon fibre reinforced pipe structure are to form one kind typical case of composite material framework
Unit, has that in light weight, intensity is high, many excellent performances such as corrosion-resistant, is the structure group commonly used in Aeronautics and Astronautics device structure
Part.
The conventional method of traditional carbon fibre reinforced pipe part shaping have pipe crimping method, fiber winding method, pultrusion method etc. into
Type technique.For the carbon fibre composite curve pipe of thin-walled, due to the complexity of its structure, according to traditional pipe crimping method,
Its demoulding is relatively difficult and lamination easily occurs；And use the technology difficulty of fiber winding method shaping very big, it is not easy to make
The large sized fittingses of standby continuous length, and product axial tensile strength is relatively low, outer surface is coarse, easy to leak；Although and pultrusion method
The unlimited composite material section bar product of length can be continuously prepared in theory, but in large-sized thin-wall pipe ring
Also there is larger difficulty in the raising of mechanical property and the control aspect of tractive force, to realizing that variable cross-section production also has quite
Difficulty.
Therefore, the technology of preparing of thin walled carbon fiber composite curve pipe is carried out being directed to Journal of Sex Research, is towards carbon fiber
The key point that composite material tube is applied in lightweight field of aircraft, and Composites Molding Techniques innovation and development are urgent
Demand.
The content of the invention
The technical problems to be solved by the invention are to be directed to above-mentioned the deficiencies in the prior art, there is provided a kind of carbon fiber is compound
The preparation method of material thin wall curve pipe fitting.This method is controlled using the interior shape face of foam core moulds control product using steel external mold
The external surface of product, adjustment can be designed to mould so as to prepare different morphologies, sizes according to being actually needed
Composite product, have the advantages that product morphology controllable is strong, surface state is bright and clean, mechanical property is preferable, simple economy, fit
For continuous length, the shaping of large scale, shaped form tubing products.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of carbon fibre composite thin-wall curve
The preparation method of pipe fitting, it is characterised in that the mould that this method uses includes foam core moulds and steel external mold, the foam core moulds
Be shaped as curve column, the steel external mold is shaped as curved tubular, the outer wall shape of the foam core moulds with it is to be prepared
The inner wall shape of carbon fibre composite thin-wall curve pipe fitting matches, and inner wall shape and the carbon fiber of the steel external mold are answered
The outer wall shape of condensation material thin-wall curve pipe fitting matches, and the shape of cross section of the foam core moulds is circular, the steel external mold
Shape of cross section be annular, the diameter dimension of the foam core moulds is not more than the carbon fibre composite Thin Walled Curved spool
The internal diameter size of part, the outside dimension phase of the internal diameter size of the steel external mold and the carbon fibre composite thin-wall curve pipe fitting
Deng this method comprises the following steps：
Step 1: foam core moulds are fitted into airbag, vacuumize process then is carried out to the airbag using vavuum pump, directly
Closely it is coated on to airbag is made outside foam core moulds；
Step 2: prepreg is uniformly wrapped in step 1 outside the airbag equipped with foam core moulds；The prepreg is carbon
Fiber/epoxy prepreg；
Step 3: the prepreg that foam core moulds and airbag are coated with step 2 is fitted into steel external mold, baking is then placed in
Heated in case, and compressed air be passed through into airbag using air compressor in heating process, make prepreg temperature be 150
DEG C, pressure solidifies 30min under conditions of being 0.8MPa~1.0MPa, release of being deflated after solidification, removes steel external mold and dress
There is the airbag of foam core moulds, obtain carbon fibre composite thin-wall curve pipe fitting, the carbon fibre composite Thin Walled Curved spool
The wall thickness of part is 0.5mm~2.0mm.
A kind of preparation method of above-mentioned carbon fibre composite thin-wall curve pipe fitting, it is characterised in that the foam core
The diameter dimension of mould is the 84%~95% of the carbon fibre composite thin-wall curve pipe fitting internal diameter size.
A kind of preparation method of above-mentioned carbon fibre composite thin-wall curve pipe fitting, it is characterised in that the foam core
The material of mould is polyurethane foam.
A kind of preparation method of above-mentioned carbon fibre composite thin-wall curve pipe fitting, it is characterised in that institute in step 2
The surface density for stating carbon fiber in carbon fiber/epoxy resin prepreg is 125g/m2~200g/m2, the carbon fiber/epoxy resin
The gel content of prepreg is 30%~45%.
A kind of preparation method of above-mentioned carbon fibre composite thin-wall curve pipe fitting, it is characterised in that institute in step 3
The external diameter for stating carbon fibre composite thin-wall curve pipe fitting is 10mm~50mm.
The present invention has advantages below compared with prior art：
1st, the present invention prepares carbon fibre composite curve pipe fitting using pressurization-mould pressing process in airbag, first will preimpregnation
Material is coated between foam core moulds and steel external mold according to pre-designed ply sequence, makes full use of airbag to have necessarily resistance to
The advantages of hot, superior flexibility, its elongation be can reach more than three times, during air bag inflator expands, due to by
To the limitation of prepreg and steel external mold, so as to produce uniform radial pressure, i.e., pressure is produced to steel external mold die wall, realized to pre-
Uniform pressure in leaching material solidification process.Deflated after solidification release, foam is pyrolyzed contraction under high temperature action, can directly from
Taken out in airbag, so as to obtain the carbon fibre composite curve pipe of hollow and thin-walled.
2nd, in the present invention, foam core moulds can control the interior shape face of product, and the external surface of product is carried out mainly by outer steel mould
Control, therefore the present invention can be designed adjustment to mould so as to prepare different morphologies, sizes according to being actually needed
Composite product, have the advantages that product morphology controllable is strong, surface state is bright and clean, mechanical property is preferable.
3rd, the present invention prepares carbon fibre composite curve pipe fitting using pressurization-mould pressing process in airbag, and air bag inflator is
Can produce uniform pressure, and in a common firing equipment can curing molding, directly can also be twined outside steel external mold
Heated around resistive heater, not only simple economy, and suitable for continuous length, large scale, shaped form tubing products into
Type.
The present invention is described in further detail with reference to the accompanying drawings and examples.
Brief description of the drawings
Fig. 1 is the view that the present invention carries out hot-press solidifying using airbag, foam core moulds and steel external mold to prepreg.
Description of reference numerals:
1-prepreg；2-foam core moulds；3-steel external mold；
4-airbag；5-compressed air.
Embodiment
Mould includes foam core moulds 2 and steel external mold used by the present invention prepares carbon fibre composite thin-wall curve pipe fitting
3, the foam core moulds 2 are shaped as curve column, and the steel external mold 3 is shaped as curved tubular, the foam core moulds 2 it is outer
Wall shape and the inner wall shape of carbon fibre composite thin-wall curve pipe fitting to be prepared match, the steel external mold 3 it is interior
Wall shape and the outer wall shape of the carbon fibre composite thin-wall curve pipe fitting match, the cross section of the foam core moulds 2
Circle is shaped as, the shape of cross section of the steel external mold 3 is annular, and the diameter dimension of the foam core moulds 2 is no more than described
The internal diameter size of carbon fibre composite thin-wall curve pipe fitting, internal diameter size and the carbon fiber composite of the steel external mold 3
Expect that the outside dimension of thin-wall curve pipe fitting is equal.The material of the foam core moulds 2 is preferably polyurethane.
Embodiment 1
The present embodiment carbon fibre composite thin-wall curve pipe fitting to be prepared is shaped as arc, and its external diameter is
22mm, wall thickness 1.0mm, chord length 3.0m.A diameter of 17mm of foam core moulds 2 selected by the present embodiment, selected steel
The internal diameter of external mold 3 is 22mm.With reference to Fig. 1, the preparation method of the present embodiment carbon fibre composite thin-wall curve pipe fitting include with
Lower step：
Step 1: foam core moulds 2 are loaded in airbag 4, airbag 4 is then connected into vavuum pump, opens vavuum pump pair afterwards
The airbag 4 carries out vacuumize process, until making airbag 4 closely be coated on outside foam core moulds 2；
Closely it is coated with outside the airbag 4 of foam core moulds 2 Step 2: prepreg 1 is uniformly wrapped in step 1；It is described pre-
Leaching material 1 is unidirectional carbon/epoxy prepreg, and the surface density of unidirectional carbon is 150g/m in the prepreg 12, in advance
The gel content of leaching material 1 is 33% (weight/mass percentage composition)；The detailed process coated in the present embodiment is：According to 90 °1CN/20
°1CN/-20°1CN/90°1CN/20°1CN/-20°1CN/90°1CNPly sequence cladding, coat total number of plies for 7 layers (1CN represent one layer
Carbon fiber one-way prepreg)；
Step 3: the prepreg 1 being coated in step 2 outside airbag 4 is loaded in steel external mold 3, it is then placed in baking oven and adds
Heat, and compressed air 5 is passed through into airbag 4 using air compressor in heating process, prepreg 1 is set in temperature to be 150 DEG C,
Pressure solidifies 30min (hot-press solidifying state is as shown in Figure 1), release of being deflated after solidification, removing under conditions of being 0.9MPa
Steel external mold 3 and the airbag 4 for being coated with foam core moulds 2, obtain carbon fibre composite thin-wall curve pipe fitting.
After testing, the external diameter of the carbon fibre composite thin-wall curve pipe fitting prepared by the present embodiment is 22mm, mean wall
Thickness is 0.98mm.The present embodiment utilizes the external surface of steel external mold control product, energy using the interior shape face of foam core moulds control product
Enough bases, which are actually needed, is designed adjustment to mould so as to prepare the composite product of different morphologies, sizes, has
Have the advantages that product morphology controllable is strong, surface state is bright and clean, mechanical property is preferable, simple economy, suitable for continuous length, greatly
The shaping of size, shaped form tubing products.
Embodiment 2
The present embodiment carbon fibre composite thin-wall curve pipe fitting to be prepared is shaped as arc, and its external diameter is
22mm, wall thickness 1.5mm, chord length 3.0m.A diameter of 16mm of foam core moulds 2 selected by the present embodiment, selected steel
The internal diameter of external mold 3 is 22mm.With reference to Fig. 1, the preparation method of the present embodiment carbon fibre composite thin-wall curve pipe fitting include with
Lower step：
Step 1: foam core moulds 2 are loaded in airbag 4, airbag 4 is then connected into vavuum pump, opens vavuum pump pair afterwards
The airbag 4 carries out vacuumize process, until making airbag 4 closely be coated on outside foam core moulds 2；
Step 2: prepreg 1 is uniformly wrapped in step 1 outside the airbag 4 equipped with foam core moulds 2；The prepreg 1
It is unidirectional in the prepreg 1 including unidirectional carbon/epoxy prepreg and carbon fiber woven cloth/epoxy prepreg
The fiber areal densities of carbon fiber/epoxy resin prepreg are 125g/m2, gel content 30%；Carbon fiber is compiled in the prepreg 1
Weave cotton cloth/fiber areal densities of epoxy prepreg are 200g/m2, gel content 40%；The detailed process of the cladding is：Press
According to 90 °2CN/20°1CN/-20°1CN/90°1CN/20°1CN/-20°1CN/90°2CN/0°1CPly sequence cladding, coating total number of plies is
10 layers (1CN is expressed as one layer of unidirectional carbon/epoxy prepreg, and 2CN is expressed as two layers of unidirectional carbon fiber/epoxy resin
Prepreg, 1C are expressed as one layer of carbon fiber woven cloth/epoxy prepreg)；
Step 3: the prepreg 1 being coated in step 2 outside airbag 4 is loaded in steel external mold 3, it is then placed in baking oven and adds
Heat, and compressed air 5 is passed through into airbag 4 using air compressor in heating process, prepreg 1 is set in temperature to be 150 DEG C,
Pressure solidifies 30min (hot-press solidifying state is as shown in Figure 1), release of being deflated after solidification, removing under conditions of being 0.9MPa
Steel external mold 3 and the airbag 4 for being coated with foam core moulds 2, obtain carbon fibre composite thin-wall curve pipe fitting.
After testing, the external diameter of the carbon fibre composite thin-wall curve pipe fitting prepared by the present embodiment is 22mm, mean wall
Thickness is 1.54mm.The present embodiment utilizes the external surface of steel external mold control product, energy using the interior shape face of foam core moulds control product
Enough bases, which are actually needed, is designed adjustment to mould so as to prepare the composite product of different morphologies, sizes, has
Have the advantages that product morphology controllable is strong, surface state is bright and clean, mechanical property is preferable, simple economy, suitable for continuous length, greatly
The shaping of size, shaped form tubing products.
Embodiment 3
The present embodiment carbon fibre composite thin-wall curve pipe fitting to be prepared is shaped as arc, and its external diameter is
50mm, wall thickness 2mm, chord length 8.0m.A diameter of 42mm of foam core moulds 2 selected by the present embodiment, outside selected steel
The internal diameter of mould 3 is 50mm.With reference to Fig. 1, the preparation method of the present embodiment carbon fibre composite thin-wall curve pipe fitting is including following
Step：
Step 1: foam core moulds 2 are loaded in airbag 4, airbag 4 is then connected into vavuum pump, opens vavuum pump pair afterwards
The airbag 4 carries out vacuumize process, until making airbag 4 closely be coated on outside foam core moulds 2；
Step 2: prepreg 1 is uniformly wrapped in step 1 outside the airbag 4 equipped with foam core moulds 2；The prepreg 1
Including unidirectional carbon/epoxy prepreg and carbon fiber woven cloth/epoxy prepreg, the prepreg 1 it is unidirectional
Carbon fiber/epoxy resin prepreg fiber areal densities are 150g/m2, gel content 33%；The carbon fiber braiding of the prepreg 1
Cloth/epoxy prepreg fiber areal densities are 200g/m2, gel content 45%；The detailed process of the cladding is：According to
90°2CN/20°1CN/-20°2CN/90°2CN/20°2CN/-20°1CN/90°2CN/0°1CPly sequence cladding, coat total number of plies as 13
(1CN is expressed as one layer of unidirectional carbon/epoxy prepreg to layer, and it is pre- that 2CN is expressed as two layers of unidirectional carbon fiber/epoxy resin
Leaching material, 1C are expressed as one layer of carbon fiber woven cloth/epoxy prepreg)；
Step 3: the prepreg 1 being coated in step 2 outside airbag 4 is loaded in steel external mold 3, it is then placed in baking oven and adds
Heat, and compressed air 5 is passed through into airbag 4 using air compressor in heating process, prepreg 1 is set in temperature to be 150 DEG C,
Pressure solidifies 30min (hot-press solidifying state is as shown in Figure 1), release of being deflated after solidification, removing under conditions of being 1.0MPa
Steel external mold 3 and the airbag 4 for being coated with foam core moulds 2, obtain carbon fibre composite thin-wall curve pipe fitting.
After testing, the external diameter of the carbon fibre composite thin-wall curve pipe fitting prepared by the present embodiment is 50mm, mean wall
Thickness is 2.02mm.The present embodiment utilizes the external surface of steel external mold control product, energy using the interior shape face of foam core moulds control product
Enough bases, which are actually needed, is designed adjustment to mould so as to prepare the composite product of different morphologies, sizes, has
Have the advantages that product morphology controllable is strong, surface state is bright and clean, mechanical property is preferable, simple economy, suitable for continuous length, greatly
The shaping of size, shaped form tubing products.
Embodiment 4
The present embodiment carbon fibre composite thin-wall curve pipe fitting to be prepared is shaped as arc, and its external diameter is
10mm, wall thickness 0.5mm, chord length 1.5m.A diameter of 8.5mm of foam core moulds 2 selected by the present embodiment, selected steel
The internal diameter of external mold 3 is 10mm.With reference to Fig. 1, the preparation method of the present embodiment carbon fibre composite thin-wall curve pipe fitting include with
Lower step：
Step 1: foam core moulds 2 are loaded in airbag 4, airbag 4 is then connected into vavuum pump, opens vavuum pump pair afterwards
The airbag 4 carries out vacuumize process, until making airbag 4 closely be coated on outside foam core moulds 2；
Step 2: prepreg 1 is uniformly wrapped in step 1 outside the airbag 4 equipped with foam core moulds 2；The prepreg 1
For unidirectional carbon/epoxy prepreg, the fiber areal densities of the prepreg 1 are 175g/m2, gel content is 38% (matter
Measure percentage composition)；The detailed process coated in the present embodiment is：According to 90 °1CN/20°1CN/-20°1CNPly sequence cladding,
Total number of plies is coated as 3 layers (1CN represents one layer of carbon fiber one-way prepreg)；
Step 3: the prepreg 1 being coated in step 2 outside airbag 4 is loaded in steel external mold 3, it is then placed in baking oven and adds
Heat, and compressed air 5 is passed through into airbag 4 using air compressor in heating process, prepreg 1 is set in temperature to be 150 DEG C,
Pressure solidifies 30min (hot-press solidifying state is as shown in Figure 1), release of being deflated after solidification, removing under conditions of being 0.8MPa
Steel external mold 3 and the airbag 4 for being coated with foam core moulds 2, obtain carbon fibre composite thin-wall curve pipe fitting.
After testing, the external diameter of the carbon fibre composite thin-wall curve pipe fitting prepared by the present embodiment is 10mm, mean wall
Thickness is 0.48mm.The present embodiment utilizes the external surface of steel external mold control product, energy using the interior shape face of foam core moulds control product
Enough bases, which are actually needed, is designed adjustment to mould so as to prepare the composite product of different morphologies, sizes, has
Have the advantages that product morphology controllable is strong, surface state is bright and clean, mechanical property is preferable, simple economy, suitable for continuous length, greatly
The shaping of size, shaped form tubing products.
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions.It is every according to invention skill
Any simple modification, change and equivalence change that art is substantially made to above example, still fall within technical solution of the present invention
Protection domain in.
Claims (3)
- A kind of 1. preparation method of carbon fibre composite thin-wall curve pipe fitting, it is characterised in that the mould bag that this method uses Foam core moulds (2) and steel external mold (3) are included, the foam core moulds (2) are shaped as curve column, the shape of the steel external mold (3) For curved tubular, outer wall shape and the carbon fibre composite thin-wall curve pipe fitting to be prepared of the foam core moulds (2) Inner wall shape matches, the inner wall shape of the steel external mold (3) and the outer wall of the carbon fibre composite thin-wall curve pipe fitting Shape matches, and the shape of cross section of the foam core moulds (2) is circle, and the shape of cross section of the steel external mold (3) is annulus Shape, the internal diameter size of the steel external mold (3) is equal with the outside dimension of the carbon fibre composite thin-wall curve pipe fitting, foam The diameter dimension of core (2) is the 84%~95% of the carbon fibre composite thin-wall curve pipe fitting internal diameter size；This method Comprise the following steps：Step 1: foam core moulds (2) are fitted into airbag (4), then the airbag (4) is carried out vacuumizing place using vavuum pump Reason, until making airbag (4) closely be coated on foam core moulds (2) outside；The airbag (4) of foam core moulds (2) is housed outside Step 2: prepreg (1) is uniformly wrapped in step 1；The prepreg (1) it is carbon fiber/epoxy resin prepreg；Step 3: the internal prepreg (1) for being coated with foam core moulds (2) and airbag (4) in step 2 is loaded into steel external mold (3) In, it is then placed in baking oven and heats, and compressed air (5) is passed through into airbag (4) using air compressor in heating process, Make prepreg (1) temperature be 150 DEG C, pressure be 0.8MPa~1.0MPa under conditions of solidify 30min, deflated after solidification Release, removing steel external mold (3) and the airbag (4) equipped with foam core moulds (2), obtain carbon fibre composite Thin Walled Curved spool Part, the wall thickness of the carbon fibre composite thin-wall curve pipe fitting is 0.5mm~2.0mm；The carbon fibre composite thin-walled The external diameter of curve pipe fitting is 10mm~50mm.
- A kind of 2. preparation method of carbon fibre composite thin-wall curve pipe fitting according to claim 1, it is characterised in that The material of the foam core moulds (2) is polyurethane foam.
- A kind of 3. preparation method of carbon fibre composite thin-wall curve pipe fitting according to claim 1, it is characterised in that The surface density of carbon fiber is 125g/m in carbon fiber/epoxy resin prepreg described in step 22~200g/m2, the carbon fibre The gel content of dimension/epoxy prepreg is 30%~45%.
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| CN106182804A (en) * | 2016-08-19 | 2016-12-07 | 上海复合材料科技有限公司 | The mould of composite pipe and forming method |
| CN107020760A (en) * | 2017-03-16 | 2017-08-08 | 泰山体育产业集团有限公司 | A kind of tubular composite material part forming methods |
| CN110091521B (en) * | 2018-01-31 | 2023-04-07 | 深圳光启尖端技术有限责任公司 | Forming method of composite material component and composite material component |
| CN108501400B (en) * | 2018-03-30 | 2023-09-12 | 浙江和泰新材料股份有限公司 | Conical dust removing sleeve and preparation method thereof |
| CN108481758A (en) * | 2018-04-04 | 2018-09-04 | 浙江和泰电器有限公司 | Ultrathin telescopic sleeve and preparation method thereof |
| CN109318507A (en) * | 2018-10-23 | 2019-02-12 | 西安康本材料有限公司 | A kind of big L/D ratio carbon fibre reinforced pipe production mold and forming method |
| 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 |
| CN112890406A (en) * | 2020-12-29 | 2021-06-04 | 浙江迈吉丽尚智能科技有限公司 | Schoolbag and manufacturing method thereof |
| CN114261107B (en) * | 2021-12-10 | 2023-10-27 | 常州启赋安泰复合材料科技有限公司 | Composite material tubular beam and forming method thereof |
| CN114851597A (en) * | 2022-04-26 | 2022-08-05 | 中国人民解放军国防科技大学 | Integral forming method of composite material structure body with special-shaped inner cavity |
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| CN200974309Y (en) * | 2006-07-20 | 2007-11-14 | 陈锦松 | Latex gas-bag model |
| CN101716824A (en) * | 2009-11-13 | 2010-06-02 | 程显军 | Manufacturing technology of oil pipeline made of carbon fibre composite |
| CN103331899B (en) * | 2013-07-17 | 2015-06-24 | 厦门新旺新材料科技有限公司 | Novel air bag for composite material processing and molding |
| CN103587124B (en) * | 2013-11-06 | 2016-03-23 | 江苏恒神股份有限公司 | Carbon fiber composite material rectangular hollow pipe for mechanical arm manufacture method |
| CN103935443A (en) * | 2014-04-02 | 2014-07-23 | 泰山体育产业集团有限公司 | Method for manufacturing unitized frame of carbon fiber composite bicycle |
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