CN107458066B - A kind of preparation method of toughening carbon fiber reinforced polymer matrix composites - Google Patents
A kind of preparation method of toughening carbon fiber reinforced polymer matrix composites Download PDFInfo
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- CN107458066B CN107458066B CN201710600809.1A CN201710600809A CN107458066B CN 107458066 B CN107458066 B CN 107458066B CN 201710600809 A CN201710600809 A CN 201710600809A CN 107458066 B CN107458066 B CN 107458066B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000004918 carbon fiber reinforced polymer Substances 0.000 title claims abstract description 18
- 229920013657 polymer matrix composite Polymers 0.000 title claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 27
- 239000003822 epoxy resin Substances 0.000 claims abstract description 27
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 27
- 239000012528 membrane Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 11
- 239000004744 fabric Substances 0.000 claims abstract description 9
- 239000011259 mixed solution Substances 0.000 claims abstract description 9
- 239000000243 solution Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 5
- 229920000570 polyether Polymers 0.000 claims abstract description 5
- 239000011148 porous material Substances 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims abstract description 5
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000008367 deionised water Substances 0.000 claims abstract description 4
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000001112 coagulating effect Effects 0.000 claims abstract description 3
- 239000004695 Polyether sulfone Substances 0.000 claims description 15
- 229920006393 polyether sulfone Polymers 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 11
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 230000010412 perfusion Effects 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 3
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 2
- 150000001412 amines Chemical group 0.000 claims description 2
- 239000010426 asphalt Substances 0.000 claims description 2
- 229940113088 dimethylacetamide Drugs 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 1
- -1 ether sulfone Chemical class 0.000 claims 1
- 238000001704 evaporation Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 11
- 239000011229 interlayer Substances 0.000 description 8
- 239000010408 film Substances 0.000 description 6
- 229920000049 Carbon (fiber) Polymers 0.000 description 5
- 238000005452 bending Methods 0.000 description 5
- 239000004917 carbon fiber Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
- B32B37/1018—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure using only vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0036—Heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B2038/0052—Other operations not otherwise provided for
- B32B2038/0076—Curing, vulcanising, cross-linking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/546—Flexural strength; Flexion stiffness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/18—Aircraft
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Reinforced Plastic Materials (AREA)
- Epoxy Resins (AREA)
Abstract
The present invention relates to a kind of preparation methods of toughening carbon fiber reinforced polymer matrix composites, comprising: (1) epoxy resin is added in polyethers sulfolane solution, obtains mixed solution, it is stand-by finally to carry out deaeration processing；(2) mixed solution is scraped in surface pore aperture on identical and equally distributed plate with knifing stick, is formed a film in deionized water coagulating bath, obtained primary membrane obtains composite membrane after washing and drying；(3) composite membrane and carbon cloth are subjected to laying, resin is perfused under negative pressure of vacuum, it is cured to obtain toughening carbon fiber reinforced polymer matrix composites.Preparation process of the present invention is simple, it is strong to operate row, is suitble to industrialized production；The composite materials property of preparation is promoted by a small margin, and interlaminar fracture toughness promotion is more significant, is had a good application prospect.
Description
Technical field
The invention belongs to carbon fibre composite field, in particular to a kind of system of toughening carbon fiber reinforced polymer matrix composites
Preparation Method.
Background technique
With the demand for development of aircraft industry material lightweight, carbon fiber resin matrix composite (Carbon Fiber
Reinforced Polymer CFRP) it is increasingly being applied to master/secondary structure material of aircraft, therefore develop high-ductility
The carbon fiber/epoxy resin composite material of property is the great research direction of current field of compound material.
There are mainly two types of modes for the toughening of carbon fiber/epoxy resin composite material: first is that epoxy resin toughened matrix, second is that
Interlayer toughened is carried out to composite material.Interlayer toughened is that thin toughening material layer is added between composite plys, multiple to improve
The fracture toughness and damage tolerance of condensation material；It can be described as the second discrete phase material layer with particle, fiber or film
Form is inserted between composite plys.The common implementation method of interlayer film toughening is by certain thickness thin polymer film
It is placed between laying, solidifies laminate according to the curing cycle of resin.
But often there is a phenomenon where resins to permeate completely for the method for interlayer toughened at present, leads to carbon fibre resin
The intensity of based composites is still not high enough, limits its application development.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of preparation method of toughening carbon fiber reinforced polymer matrix composites,
This method preparation process is simple, it is strong to operate row, is suitble to industrialized production；The composite materials property of preparation obtains by a small margin
It is promoted, interlaminar fracture toughness promotion is more significant, has a good application prospect.
The present invention provides a kind of preparation methods of toughening carbon fiber reinforced polymer matrix composites, comprising:
(1) polyether sulfone is uniformly mixed at 60 DEG C -80 DEG C with solvent, obtains polyethers sulfolane solution；Then by epoxy resin
It is added in polyethers sulfolane solution, is uniformly mixed at 30~50 DEG C, obtain mixed solution, it is stand-by finally to carry out deaeration processing；Its
In, the mass ratio of polyether sulfone and epoxy resin is 7.5:2.5~9.5:0.5；
(2) mixed solution in step (1) is scraped into the identical and equally distributed plate in surface pore aperture with knifing stick
On, it forms a film in deionized water coagulating bath after prevapourising, obtained primary membrane obtains composite membrane after washing and drying；
(3) composite membrane in step (2) is subjected to laying than 9~19:10~20 and carbon cloth by the number of plies, it is negative in vacuum
Pressure perfusion resin, it is cured to obtain toughening carbon fiber reinforced polymer matrix composites (VARI moulding process).
Solvent in the step (1) is dimethyl sulfoxide, dimethylformamide or dimethyl acetamide；Polyether sulfone with it is molten
The mass ratio of agent is 1:3~6.Polyether sulfone used is hydroxy-end capped.
Epoxy resin in the step (1) is glycidyl ether type epoxy resin.
The glycidyl ether type epoxy resin is E51 epoxy resin.
Width is 100~200 μm between knifing stick in the step (2).The material of plate is tetrafluoroethene.
The aperture of compound membrane pores in the step (2) is 1~2mm, and surface hole density is 0.3~0.5 hole/cm2。
Perfusion resin in the step (3) specifically: perfusion E51 epoxy resin, filling temperature are 60~80 DEG C, viscosity
For 0.1~0.2Pas.
Curing process parameter in the step (3) are as follows: solidification temperature is 120~140 DEG C, and curing time is 2~4h；Institute
The curing agent used is amine curing agent.
The present invention prepares polyether sulfone/epoxy resin composite membrane using phase inversion, by composite membrane be laid in carbon cloth it
Between, laminate is made using VARI moulding process.By the addition of epoxy resin additive in casting solution, composite membrane is compared to pure
PES film get a promotion in the solution rate of epoxy resin, and pass through to support plate punching handle, resulting composite membrane
The surface hole that is evenly distributed with same apertures also have the uniform hole of certain density, when resin is perfused, hole pair
The infiltration of resin plays positive effect, its problem of hindering infiltration between carbon cloth of effective solution.
The present invention can control composite membrane to be not dissolved under filling temperature by the ratio of control polyether sulfone and epoxy resin
Epoxy resin, at curing temperatures dissolution rapidly.After solidification, PES microballoon is mutually mutually separated from matrix, these PES microballoon phases
The developing direction of crackle when can change resin matrix brittle fracture, and the extension of crackle is hindered, establish a kind of interlayer toughened
New method.
Beneficial effect
(1) preparation process of the present invention is simple, it is strong to operate row, is suitble to industrialized production；The Compound Material Engineering of preparation
It can be promoted by a small margin, interlaminar fracture toughness promotion is more significant, has a good application prospect；
(2) carbon fibre composite after toughening is compared to non-toughening, tensile strength, stretch modulus, bending strength
And stretch modulus improves, compressive strength promotes 13%, and compression modulus promotes 18%, and interlaminar fracture toughness promotes 25%.
Detailed description of the invention
Fig. 1 is the mode of appearance of primary membrane of the present invention；
Fig. 2 is the laminate SEM cross-section diagram that the present invention is prepared.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiment 1
(1) it takes 19g PES powder to be placed in a beaker, the dimethyl sulfoxide of 4 times of PES mass is added, 60 DEG C are stirred to equal
After even, 1g E51 epoxy resin is added, 30 DEG C stir evenly, and obtain mixed solution, and deaeration processing is stand-by in 30 DEG C of baking ovens.
(2) surface is had to hole, 0.36 hole of hole density/cm of diameter 2mm2Tetrafluoroethene plate carry out cleaning drying, and protect
It holds that its temperature is identical as mixed solution temperature, mixed solution is poured on to one end of plate, make its shape with wide knifing stick between 120 μm
At one layer of uniform liquid film, after prevapourising 30s, it is immersed in pure deionized water, primary membrane is obtained after 2min, it is nascent by what is obtained
It is stand-by that film obtains composite membrane after washing and drying.
(3) composite membrane is put into continuous carbon cloth interlayer, according to VARI technique, laying carbon cloth, release cloth is led
Drift net, vacuum bag seal whole system.Then the gas of mold cavity, 60 DEG C of perfusion E51 asphalt mixtures modified by epoxy resin are extracted out under negative pressure of vacuum
Rouge, resin viscosity 0.2Pas, wherein the number of plies of composite membrane and carbon cloth ratio is 9:11.After selecting 120 DEG C/2h+180 DEG C
The curing process of processing obtains the compound phase inversion membrane interlayer toughened resin-based carbon fiber composite wood of polyether sulfone/E51 epoxy resin
Material.
Sample correlation mechanical property is detected using microcomputer controlled electronic universal tester
| Non- toughening material | The present embodiment | |
| Tensile strength (MPa) | 602 | 636 |
| Stretch modulus (GPa) | 100 | 111 |
| Bending strength (MPa) | 1203 | 1165 |
| Bending modulus (GPa) | 1165 | 176 |
| Compressive strength (MPa) | 621 | 694 |
| Compression modulus (GPa) | 91 | 108 |
| GIIC(KJ/m2) | 1.227 | 1.534 |
The compound phase inversion membrane interlayer toughened of polyether sulfone/E51 epoxy resin of the present embodiment can be concluded that by upper table
Resin-based carbon fiber composite can make non-toughening material tensile strength, and stretch modulus, bending strength, bending modulus is by a small margin
It improves, compressive strength, modulus, interlaminar fracture toughness improves more obvious, promotion 25%.
Claims (7)
1. a kind of preparation method of toughening carbon fiber reinforced polymer matrix composites, comprising:
(1) polyether sulfone is uniformly mixed at 60 DEG C -80 DEG C with solvent, obtains polyethers sulfolane solution；Then epoxy resin is added
It into polyethers sulfolane solution, is uniformly mixed at 30~50 DEG C, obtains mixed solution, it is stand-by finally to carry out deaeration processing；Wherein, gather
The mass ratio of ether sulfone and epoxy resin is 7.5:2.5~9.5:0.5；
(2) mixed solution in step (1) is scraped in surface pore aperture on identical and equally distributed plate, in advance with knifing stick
It forms a film in deionized water coagulating bath after evaporation, obtained primary membrane obtains composite membrane after washing and drying；
(3) composite membrane in step (2) is subjected to laying than 9~19:10~20 and carbon cloth by the number of plies, under negative pressure of vacuum
Resin is perfused, it is cured to obtain toughening carbon fiber reinforced polymer matrix composites, wherein resin is perfused specifically: perfusion E51 asphalt mixtures modified by epoxy resin
Rouge, filling temperature are 60 DEG C, viscosity 0.2Pas.
2. a kind of preparation method of toughening carbon fiber reinforced polymer matrix composites according to claim 1, it is characterised in that: institute
Stating the solvent in step (1) is dimethyl sulfoxide, dimethylformamide or dimethyl acetamide；The mass ratio of polyether sulfone and solvent
For 1:3~6.
3. a kind of preparation method of toughening carbon fiber reinforced polymer matrix composites according to claim 1, it is characterised in that: institute
Stating the epoxy resin in step (1) is glycidyl ether type epoxy resin.
4. a kind of preparation method of toughening carbon fiber reinforced polymer matrix composites according to claim 3, it is characterised in that: institute
Stating glycidyl ether type epoxy resin is E51 epoxy resin.
5. a kind of preparation method of toughening carbon fiber reinforced polymer matrix composites according to claim 1, it is characterised in that: institute
Width is 100~200 μm between stating the knifing stick in step (2).
6. a kind of preparation method of toughening carbon fiber reinforced polymer matrix composites according to claim 1, it is characterised in that: institute
The aperture for stating the compound membrane pores in step (2) is 1~2mm, and surface hole density is 0.3~0.5 hole/cm2。
7. a kind of preparation method of toughening carbon fiber reinforced polymer matrix composites according to claim 1, it is characterised in that: institute
State the curing process parameter in step (3) are as follows: solidification temperature is 120~140 DEG C, and curing time is 2~4h；Used solidification
Agent is amine curing agent.
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| CN113287583A (en) * | 2021-06-18 | 2021-08-24 | 威海亿美运动器械有限公司 | Enhanced fishing rod and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104553177A (en) * | 2014-12-15 | 2015-04-29 | 中航复合材料有限责任公司 | Flame-retardant modified carbon fiber prepreg and composite material product |
| CN104624061A (en) * | 2015-02-02 | 2015-05-20 | 曾生 | Production method of flat sheet membrane |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104553177A (en) * | 2014-12-15 | 2015-04-29 | 中航复合材料有限责任公司 | Flame-retardant modified carbon fiber prepreg and composite material product |
| CN104624061A (en) * | 2015-02-02 | 2015-05-20 | 曾生 | Production method of flat sheet membrane |
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