CN109181226A - A kind of rapid shaping epoxy chopped carbon fiber felt prepreg and its production technology - Google Patents

A kind of rapid shaping epoxy chopped carbon fiber felt prepreg and its production technology Download PDF

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Publication number
CN109181226A
CN109181226A CN201810923453.XA CN201810923453A CN109181226A CN 109181226 A CN109181226 A CN 109181226A CN 201810923453 A CN201810923453 A CN 201810923453A CN 109181226 A CN109181226 A CN 109181226A
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China
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carbon fiber
epoxy
fiber felt
chopped carbon
curing
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庞兴功
白灵
李欣
梁波
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Ada Cable High Tech Material Wuhu Co Ltd
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Ada Cable High Tech Material Wuhu Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/24Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2363/00Characterised by the use of epoxy resins; Derivatives of epoxy resins
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00Use of ingredients characterised by shape
    • C08K7/02Fibres or whiskers
    • C08K7/04Fibres or whiskers inorganic
    • C08K7/06Elements

Abstract

The invention discloses a kind of rapid shaping epoxy chopped carbon fiber felt prepregs, it is related to fiber reinforced thermosetting resin composite material automobile field of components, the carbon fiber felt prepreg includes the chopped carbon fiber felt that weight percent is 30~50%, the fast-curing epoxy resin paste obtained after fast-curing epoxy resin composition and polyhydric isocyanate compound the thickener mixing that percentage is 50~70%, the invention also discloses this kind of rapid shaping production technologies of epoxy chopped carbon fiber felt prepreg, carbon fiber content weight ratio in rapid shaping epoxy chopped carbon fiber felt prepreg provided by the invention is 30~50%, mechanical property is suitable with automobile-used intensity of aluminum alloy, and the chopped carbon fiber felt prepreg is without volatile substances, meet the low VOC environmental requirement of automotive component material, simple process, Be conducive to the large-scale production in automobile component field.

Description

A kind of rapid shaping epoxy chopped carbon fiber felt prepreg and its production technology
Technical field
The present invention relates to fiber reinforced thermosetting resin composite material automobile field of components more particularly to a kind of rapid shapings With epoxy chopped carbon fiber felt prepreg and its production technology.
Background technique
Under energy-saving and environment-friendly overall situation trend, the developing direction of automobile industry is also just towards environmentally protective and lightweight Method development.The polymer matrix composites of carbon fiber reinforcement have high than strong as a kind of lightweight, high-intensitive new material Many excellent characteristics such as degree, high-mechanical property, high ratio modulus, high impact-resistance and highly corrosion resistant ability, comprehensive performance It is the preferred material of automobile component lightweight application more than aluminium alloy and high strength steel.However, high cost limits carbon fiber Tie up the extensive use of composite material.Carbon fibre composite is derived from aerospace field, in aerospace composite product, The cost of raw material (referring mainly to carbon fiber and resin) and subsequent technique is substantially 20/80 relationship, so to reduce composite wood The cost of material, it is important to solve the process costs of accounting 80%.Currently, using the unidirectional pre-immersion material or woven cloth of continuous carbon fibre The autoclave or die press technology for forming structure and Lay up design of prepreg are complicated, and stock utilization is low, and molding time is long, Wu Fashi Existing automotive field carbon fibre composite component low cost mass production.
China Patent Publication No. is that the patent of CN102775622 discloses a kind of system of fiber reinforced thermolplastic composite material The fiber reinforced thermolplastic composite material of Preparation Method and its application, the patent is formed by weaving, has obtained three-dimensional structure Composite material, although assign the higher rigidity of material, since resin molding process required temperature is higher, make be molded cost Also it increases accordingly.
Sheet molding compound (SMC) compression molding is a kind of advanced polymer matrix composites forming method.Preparation method Are as follows: thermosetting resin, reinforcing fiber and various auxiliary agents are formed into a kind of larger more stable sheet stock of viscosity by thickening first, The sheet stock is cut into certain size again, laying is molded in mold.SMC mostly uses glass fiber reinforcement unsaturation tree Rouge obtains, but the SMC intensity of fiberglass reinforced is poor, is unable to satisfy requirement of the automotive light weight technology to material high-strength light, and Unsaturated-resin is unable to satisfy the environmental requirement of the low VOC emission of automobile component using styrene as solvent.Using continuous carbon fibre Although the epoxy SMC for the enhancing that is chopped can effectively improve composite material strength, it is not easy to be uniformly dispersed there are still carbon fiber, carbon fiber The problems such as dimension weight content is lower than 40%, and epoxy resin cure molding time is longer.
Summary of the invention
The purpose of the present invention is to provide a kind of rapid shaping epoxy chopped carbon fiber felt prepreg, which is fiber Enhance thermoset ting resin composite, is mainly used for automobile component field, improves the impact resistance of product, extend making for material Use the service life.Another object of the present invention is to provide a kind of rapid shaping production works of epoxy chopped carbon fiber felt prepreg Skill, to solve the above-mentioned many defects caused by the prior art.
To achieve the above object, the present invention provides technical solution below:
A kind of rapid shaping provided by the invention epoxy chopped carbon fiber felt prepreg, including weight percent be 30~ 50% chopped carbon fiber felt, the fast-curing epoxy resin that weight percent is 50~70% are pasted;Wherein, fast curable epoxy Resin paste after fast-curing epoxy resin composition and the mixing of polyhydric isocyanate compound thickener by obtaining, rapid curing ring The weight ratio of epoxy resin composition and polyhydric isocyanate compound thickener is 100:5~20.
The chopped carbon fiber felt is using the chopped silk of recycling carbon fiber, the chopped silk of continuous carbon fibre and carbon fibre fabric edge grinding Expect that the mixture of one or more of short silk is made through no spinning process;Chopped carbon fiber length in carbon fiber felt is 5 ~200mm, felt surface density are 100~1000g/m2
Preferably, the chopped carbon fiber length in the chopped carbon fiber felt be 30~100mm, felt surface density be 200~ 600g/m2
A kind of production technology of rapid shaping provided by the invention epoxy chopped carbon fiber felt prepreg, including following work Sequence:
A, epoxy resin, diluent, polyethylene glycol, epoxy hardener, promotor and auxiliary agent are added to the mixing of twin shaft resin Fast-curing epoxy resin composition is stirred to get in machine, and is stored in resin storage tank;
B, fast-curing epoxy resin composition and polyhydric isocyanate compound thickener are added separately in proportion It in resin charging pump and thickener charging pump, stirs at low speed, is uniformly mixed, while vacuum defoamation is carried out by online vacuum evacuation device Processing obtains fast-curing epoxy resin paste;
C, epoxy paste is coated uniformly on to the surface of upper and lower carrier film using scraper, forms epoxy paste film layer;
D, then epoxy paste film layer be covered on chopped carbon fiber felt upper and lower surfaces, build up epoxy paste film+be chopped Carbon fiber felt+epoxy paste film three-decker, is overpressurized and is vented, and so that epoxy paste is sufficiently infiltrated carbon fiber and is formed Chopped carbon fiber felt resin compounded sheet material, then winding or packing-box design;
E, the chopped carbon fiber felt resin compounded sheet material of winding or packing-box design is made into epoxy resin in drying chamber maturation process Paste thickening, obtains chopped carbon fiber felt prepreg.
Wherein, the diluent is the reactive diluent containing more than one epoxy-functional, and the epoxy hardener is virtue Fragrant amine, dicyandiamide class, organic hydrazides, modified aromatic amine, modified dicyandiamine class, modified organic hydrazides, novolac One or more of resin;The promotor be one of organic urea, modified organic urea, imidazoles and modified imidazole or It is two or more;The auxiliary agent includes size, defoaming agent and inner pattern releasing agent applicable etc..Further, the epoxy hardener, promotor It is 100 μm of solid powders below of partial size with auxiliary agent etc..
Preferably, the diluent is the reactive diluent containing three epoxy-functionals.
Preferably, the epoxy hardener is one or both of hydrazides curing agent or dicy-curing agent.
Preferably, the promotor is organic urea and modified imidazole curing accelerator.
Preferably, the solid powder grain preferable particle size is 10 μm hereinafter, 4~5 μm of average grain diameter.
Preferably, the polyhydric isocyanate compound thickener is methyl diphenylene diisocyanate.
Fast-curing epoxy resin composition and the weight ratio of polyhydric isocyanate compound thickener described in step b be 100:9~11, when a length of 10~15min of the stirring.
Carrier film described in step c is polyethylene film or mylar, and the thicknesses of layers is 0.02~0.06mm.
Curing temperature is 10~70 DEG C in step e, and the time is 1~200hrs.
Specifically, production technology of the rapid shaping with epoxy chopped carbon fiber felt prepreg, including following process:
A, by epoxy resin, the reactive diluent containing three epoxy-functionals, polyethylene glycol, hydrazides curing agent or dicyandiamide One or both of curing agent, organic urea and modified imidazole curing accelerator and size, defoaming agent and inner pattern releasing agent applicable add Fast-curing epoxy resin composition is stirred to get into twin shaft resin mixing machine, and is stored in resin storage tank;
B, by fast-curing epoxy resin composition and methyl diphenylene diisocyanate thickener with the weight of 100:5~20 Amount ratio is added separately in resin charging pump and thickener charging pump, stirs at low speed 5~15min, is uniformly mixed, while by online Vacuum evacuation device carries out vacuum defoamation processing, obtains fast-curing epoxy resin paste;
C, epoxy paste is coated uniformly on to the upper and lower surfaces of polyethylene support film using scraper, forms epoxy resin Film layer is pasted, thicknesses of layers is 0.1~0.5mm;
D, then epoxy paste film layer be covered on chopped carbon fiber felt upper and lower surfaces, build up epoxy paste film+be chopped Carbon fiber felt+epoxy paste film three-decker, is overpressurized and is vented, and so that epoxy paste is sufficiently infiltrated carbon fiber and is formed Chopped carbon fiber felt resin compounded sheet material, then winding or packing-box design;
E, by winding or packing-box design chopped carbon fiber felt resin compounded sheet material 10~70 DEG C drying chamber curing 1~ 200hrs thickens epoxy paste, obtains chopped carbon fiber felt prepreg.
It is 10~40Pa.s, the asphalt mixtures modified by epoxy resin after maturation process that test, which obtains viscosity of the epoxy paste at 20~25 DEG C, Viscosity of the rouge paste at 20~25 DEG C is 1000~50000Pa.s, and epoxy paste is in 150 DEG C of gel time≤60sec. For carbon fiber content weight ratio up to 40% or more, tensile strength reaches 250MPa or more, and stretch modulus reaches 22GPa or more, bending Intensity reaches 350MPa or more, and bending modulus reaches 22GPa or more.
Above technical scheme is used, compared with prior art, the invention has the following advantages that
(1) present invention employs the chopped silk of the recycling carbon fiber of low cost, the chopped silk of continuous carbon fibre and carbon fibre fabrics Side crops are chopped silk as raw material, so that the cost of composite material substantially reduces.
(2) viscosity of the epoxy paste that the present invention obtains at 20~25 DEG C is 10~40Pa.s, after maturation process Viscosity of the epoxy paste at 20~25 DEG C be 1000~10000Pa.s, and epoxy paste is in 150 DEG C of gel times ≤ 60sec, the rapid shaping epoxy chopped carbon fiber felt prepreg formed after curing thickening, appearance uniform, demoulding are good.
(3) present invention, which has, is molded rapid shaping characteristic in 140~150 DEG C of conditions, can be by epoxy composite material component Molding cycle shortens to 5~10min, and simple process, is conducive to the large-scale production on automobile component.
(4) the carbon fiber content weight ratio in carbon fibre composite prepared by the present invention up to 40% contain more than, stretch strong Degree reaches 250MPa or more, and stretch modulus reaches 22GPa or more, and bending strength reaches 350MPa or more, and bending modulus reaches 22GPa or more, mechanical property is suitable with automobile-used intensity of aluminum alloy, and density of material is less than 1.50g/cm3, and the automobile component of manufacture can Reach 40% or more weight loss effect;And the chopped carbon fiber felt prepreg is without volatile substances, the carbon fiber composite of preparation Material component meets the low VOC environmental requirement of automotive component material.
Detailed description of the invention
Fig. 1 is the flow chart of the epoxy chopped carbon fiber felt process for manufacturing prepregs of rapid shaping.
Specific embodiment
Below by the description to embodiment, specific embodiments of the present invention will be described in further detail, with side Those skilled in the art is helped to have more complete, accurate and deep understanding to inventive concept of the invention, technical solution.
The chopped carbon fiber felt raw material used:
A, ELG recycles chopped carbon fiber felt, and the chopped carbon fiber felt of use is the carbon fiber recycled by ELG high-temperature cracking method Dimension is made after being chopped by needling process, and regular size chopped carbon fiber felt A1, A2 and A3 surface density is respectively as follows: 200g/m2(gram Every square metre), 300g/m2、400g/m2
B, the beautiful T700 chopped carbon fiber felt in east, the chopped carbon fiber felt of use are led to after the beautiful T700 continuous carbon fibre in east is chopped It crosses needling process to be made, which is 260g/m2
C, the beautiful T700 in east recycles chopped carbon fiber felt, and the chopped carbon fiber felt of use is that the beautiful T700 carbon fiber in east of recycling is knitted Object leftover bits and pieces of material chopped carbon fiber is made by needling process, which is 300g/m2
The epoxy chopped carbon fiber felt prepreg invented is tested for the property, the method is as follows:
1. being thickened using TADHR-2 rheometer test fast-curing epoxy resin composition and polyhydric isocyanate compound Initial viscosity of the epoxy paste that agent is mixed to get in proportion at 20~25 DEG C.
2. epoxy resin of the chopped carbon fiber felt prepreg after maturation process can be recycled using TADHR-2 rheometer test Paste the viscosity at 20~25 DEG C.
3. cutting size is 10 × 10cm2Recyclable chopped carbon fiber felt prepreg, weighing quality be M, take same face The chopped carbon fiber felt of product size, weighing quality are m, calculate recyclable chopped carbon fiber felt prepreg resin by formula and contain Amount:Carbon fiber content:
4. hot plate is heated to 150 ± 1 DEG C using hot plate method, ring contained by chopped carbon fiber felt prepreg is can be recycled in test 2g The gel time of oxygen resin.
5. test is recyclable based on the measuring method for having used electronic universal tensile testing machine in GB/T 1446-2005 The mechanical property of the composite products of chopped carbon fiber felt prepreg quick shaping process preparation, wherein tensile property is based on GB/T 1447-2005 standard testing, including tensile strength, stretch modulus;Bending property is surveyed based on GB/T 1449-2005 standard Examination, including bending strength, bending modulus.
6. measuring answering for recyclable chopped carbon fiber felt prepreg quick shaping process preparation using DMA (TADMAQ800) The Tg of laminate article.
Embodiment 1:
A kind of rapid shaping epoxy chopped carbon fiber felt prepreg, including surface density are 300g/m2ELG recycles the carbon that is chopped The weight percent of fibrofelt A2 is 30%, fast-curing epoxy resin composition and methyl diphenylene diisocyanate thickener The fast-curing epoxy resin paste weight percent obtained after mixing is 70%;Wherein, fast-curing epoxy resin composition and The weight ratio of polyhydric isocyanate compound thickener is 100:9.
A kind of production technology of rapid shaping epoxy chopped carbon fiber felt prepreg, the process of technique as shown in Figure 1, are wrapped Include following process:
A, by epoxy resin, the reactive diluent containing three epoxy-functionals, polyethylene glycol, hydrazides curing agent, organic urea With modified imidazole curing accelerator, size, defoaming agent and inner pattern releasing agent applicable are added in twin shaft resin mixing machine and stir to get quickly Cured epoxy resin compositions store in resin storage tank;
B, by fast-curing epoxy resin composition and methyl diphenylene diisocyanate thickener with the weight ratio of 100:9 It is added separately in resin charging pump and thickener charging pump, stirs at low speed 10~15min, be uniformly mixed, while by taking out online Vacuum plant carries out vacuum defoamation processing, obtains fast-curing epoxy resin paste;
C, epoxy paste is coated uniformly on the upper and lower of polyethylene support film using scraper, forms 0.19~0.20mm Epoxy paste film layer;
It d, is 300g/m by surface density2ELG recycling chopped carbon fiber felt A2 blowing is laid on underlying epoxy paste film, Then upper layer epoxy paste film is covered on carbon fiber felt surface, builds up epoxy paste film+chopped carbon fiber felt+asphalt mixtures modified by epoxy resin Rouge pastes film three-decker, is overpressurized and is vented, and so that epoxy paste is sufficiently infiltrated carbon fiber and forms chopped carbon fiber felt resin Composite sheet, then winding or packing-box design.
E, the drying chamber maturation process by the chopped carbon fiber felt resin compounded sheet material of winding or packing-box design at 50 DEG C 40hrs thickens epoxy paste, obtains chopped carbon fiber felt prepreg.
The performance test of chopped carbon fiber felt prepreg:
1. being thickened using TADHR-2 rheometer test fast-curing epoxy resin composition and polyhydric isocyanate compound Initial viscosity of the epoxy paste that agent is mixed to get in proportion at 25 DEG C is 10Pa.s.
2. epoxy resin of the chopped carbon fiber felt prepreg after maturation process can be recycled using TADHR-2 rheometer test Pasting the viscosity at 25 DEG C is 1210Pa.s.
3. respectively cutting size in left, center, right position is 10 × 10cm2Recyclable chopped carbon fiber felt prepreg, weighing Quality is M, takes the chopped carbon fiber felt of same size, and weighing quality is m, calculates recyclable chopped carbon fiber by formula Felt prepreg resin content:Carbon fiber content: Obtaining resin average content is R/C=61.2%, carbon fiber content weight ratio is up to 40%.
4. hot plate is heated to 150 ± 1 DEG C using hot plate method, ring contained by chopped carbon fiber felt prepreg is can be recycled in test 2g The gel time of oxygen resin is 47sec.
5. die cavity is preheated to 150 DEG C with a thickness of the plate molding die of 2mm, then even application release agent;It cuts The recyclable chopped carbon fiber felt prepreg of 4pcs preparation, take off after upper and lower layer PE film by 4pcs prepreg according to+0 ° /+0 ° /+ 0 ° /+0 ° folded structure gathers into folds, wherein 0 ° is along chopped carbon fiber felt length direction, 90 ° for along chopped carbon fiber felt width direction ,+ It is positive for the carbon felt prepreg that is chopped ,-it is the carbon felt prepreg back side that is chopped, it is then placed in the plate molding die of preheating according to journey Formula is forced into maximum pressure 5MPa, keeps pressure hot pressing 5min, the recyclable chopped carbon fiber of thickness 2mm is obtained after the completion of hot pressing Felt composite material plate.
6. resulting composite board is cut into 5 leaf length 250mm along 0 ° of direction, the stretch-proof that width is 25mm is real Piece is tested, being equally cut into 5 leaf length along 0 ° of direction is 80mm, and width is the counter-bending test piece of 15mm, cuts out 5 along 90 ° of directions Leaf length 250mm, width are the stretch-proof experiment slice of 25mm, and being equally cut into 5 leaf length along 90 ° of directions is 80mm, and width is The counter-bending test piece of 15mm;Being based on GB/T 1447-2005 standard testing using electronic universal tensile testing machine, it is stretched by force Degree, stretch modulus are based on its bending strength of GB/T 1449-2005 standard testing, bending modulus;Measure composite board 0 ° of direction tensile strength 252MPa, stretch modulus 22.1GPa, bending strength 374MPa, bending modulus 22.8GPa;It draws in 90 ° of directions Stretch intensity 341MPa, stretch modulus 31.7GPa, bending strength 498MPa, bending modulus 33.2GPa, good mechanical properties;By institute The composite board obtained, being cut into length is 64mm, and width is the print of 8mm;DMA is used to measure Tg with three-point bending mode It is 124 DEG C.
Embodiment 2:
A kind of rapid shaping epoxy chopped carbon fiber felt prepreg, including surface density are 200g/m2ELG recycles the carbon that is chopped The weight percent of fibrofelt A1 is 30%, fast-curing epoxy resin composition and methyl diphenylene diisocyanate thickener The fast-curing epoxy resin paste weight percent obtained after mixing is 70%;Wherein, fast-curing epoxy resin composition and The weight ratio of polyhydric isocyanate compound thickener is 100:5.
A kind of production technology of rapid shaping epoxy chopped carbon fiber felt prepreg, including following process:
A, by epoxy resin, the reactive diluent containing three epoxy-functionals, polyethylene glycol, hydrazides curing agent, organic urea With modified imidazole curing accelerator, size, defoaming agent and inner pattern releasing agent applicable are added in twin shaft resin mixing machine and stir to get quickly Cured epoxy resin compositions store in resin storage tank;
B, by fast-curing epoxy resin composition and methyl diphenylene diisocyanate thickener with the weight ratio of 100:9 It is added separately in resin charging pump and thickener charging pump, stirs at low speed 10~15min, be uniformly mixed, while by taking out online Vacuum plant carries out vacuum defoamation processing, obtains fast-curing epoxy resin paste;
C, epoxy paste is coated uniformly on the upper and lower of polyethylene support film using scraper, forms 0.13~0.14mm Epoxy paste film layer;
It d, is 200g/m by surface density2ELG recycling chopped carbon fiber felt A1 blowing is laid on underlying epoxy paste film, Then upper layer epoxy paste film is covered on carbon fiber felt surface, builds up epoxy paste film+chopped carbon fiber felt+asphalt mixtures modified by epoxy resin Rouge pastes film three-decker, is overpressurized and is vented, and so that epoxy paste is sufficiently infiltrated carbon fiber and forms chopped carbon fiber felt resin Composite sheet, then winding or packing-box design;
E, the drying chamber maturation process by the chopped carbon fiber felt resin compounded sheet material of winding or packing-box design at 50 DEG C 40hrs thickens epoxy paste, obtains chopped carbon fiber felt prepreg.
The performance test of chopped carbon fiber felt prepreg:
1. being thickened using TADHR-2 rheometer test fast-curing epoxy resin composition and polyhydric isocyanate compound Initial viscosity of the epoxy paste that agent is mixed to get in proportion at 25 DEG C is 15Pa.s.
2. epoxy resin of the chopped carbon fiber felt prepreg after maturation process can be recycled using TADHR-2 rheometer test Pasting the viscosity at 25 DEG C is 1500Pa.s.
3. respectively cutting size in left, center, right position is 10 × 10cm2Recyclable chopped carbon fiber felt prepreg, weighing Quality is M, takes the chopped carbon fiber felt of same size, and weighing quality is m, calculates recyclable chopped carbon fiber by formula Felt prepreg resin content:Carbon fiber content: Obtaining resin average content is R/C=61.5%, carbon fiber content weight ratio are 45%.
4. hot plate is heated to 150 ± 1 DEG C using hot plate method, ring contained by chopped carbon fiber felt prepreg is can be recycled in test 2g The gel time of oxygen resin is 44sec.
Embodiment 3:
A kind of rapid shaping epoxy chopped carbon fiber felt prepreg, including surface density are 400g/m2ELG recycles the carbon that is chopped The weight percent of fibrofelt A3 is 35%, fast-curing epoxy resin composition and methyl diphenylene diisocyanate thickener The fast-curing epoxy resin paste weight percent obtained after mixing is 65%;Wherein, fast-curing epoxy resin composition and The weight ratio of polyhydric isocyanate compound thickener is 100:20.
A kind of production technology of rapid shaping epoxy chopped carbon fiber felt prepreg, including following process:
A, by epoxy resin, the reactive diluent containing three epoxy-functionals, polyethylene glycol, hydrazides curing agent, organic urea With modified imidazole curing accelerator, size, defoaming agent and inner pattern releasing agent applicable are added in twin shaft resin mixing machine and stir to get quickly Cured epoxy resin compositions store in resin storage tank;
B, by fast-curing epoxy resin composition and methyl diphenylene diisocyanate thickener with the weight ratio of 100:9 It is added separately in resin charging pump and thickener charging pump, stirs at low speed 10~15min, be uniformly mixed, while by taking out online Vacuum plant carries out vacuum defoamation processing, obtains fast-curing epoxy resin paste;
C, epoxy paste is coated uniformly on the upper and lower of mylar carrier film using scraper, form 0.25~ The epoxy paste film layer of 0.26mm;
It d, is 400g/m by surface density2ELG recycling chopped carbon fiber felt A3 blowing is laid on underlying epoxy paste film, Then upper layer epoxy paste film is covered on carbon fiber felt surface, builds up epoxy paste film+chopped carbon fiber felt+asphalt mixtures modified by epoxy resin Rouge pastes film three-decker, is overpressurized and is vented, and so that epoxy paste is sufficiently infiltrated carbon fiber and forms chopped carbon fiber felt resin Composite sheet, then winding or packing-box design;
E, the drying chamber maturation process by the chopped carbon fiber felt resin compounded sheet material of winding or packing-box design at 50 DEG C 40hrs thickens epoxy paste, obtains chopped carbon fiber felt prepreg.
The performance test of chopped carbon fiber felt prepreg:
1. being thickened using TADHR-2 rheometer test fast-curing epoxy resin composition and polyhydric isocyanate compound Initial viscosity of the epoxy paste that agent is mixed to get in proportion at 25 DEG C is 12Pa.s.
2. epoxy resin of the chopped carbon fiber felt prepreg after maturation process can be recycled using TADHR-2 rheometer test Pasting the viscosity at 25 DEG C is 21328Pa.s.
3. respectively cutting size in left, center, right position is 10 × 10cm2Recyclable chopped carbon fiber felt prepreg, weighing Quality is M, takes the chopped carbon fiber felt of same size, and weighing quality is m, calculates recyclable chopped carbon fiber by formula Felt prepreg resin content:Carbon fiber content: Obtaining resin average content is R/C=60.9%, carbon fiber content weight ratio are 42%.
4. hot plate is heated to 150 ± 1 DEG C using hot plate method, ring contained by chopped carbon fiber felt prepreg is can be recycled in test 2g The gel time of oxygen resin is 45sec.
Embodiment 4:
A kind of rapid shaping epoxy chopped carbon fiber felt prepreg, including surface density are 260g/m2The beautiful T700 in east is chopped The weight percent of carbon fiber felt B is 40%, fast-curing epoxy resin composition and methyl diphenylene diisocyanate thickening The fast-curing epoxy resin paste weight percent obtained after agent mixing is 60%;Wherein, fast-curing epoxy resin composition Weight ratio with polyhydric isocyanate compound thickener is 100:9.
A kind of production technology of rapid shaping epoxy chopped carbon fiber felt prepreg, including following process:
A, by epoxy resin, the reactive diluent containing three epoxy-functionals, polyethylene glycol, hydrazides curing agent, organic urea With modified imidazole curing accelerator, size, defoaming agent and inner pattern releasing agent applicable are added in twin shaft resin mixing machine and stir to get quickly Cured epoxy resin compositions store in resin storage tank;
B, by fast-curing epoxy resin composition and methyl diphenylene diisocyanate thickener with the weight ratio of 100:9 It is added separately in resin charging pump and thickener charging pump, stirs at low speed 10~15min, be uniformly mixed, while by taking out online Vacuum plant carries out vacuum defoamation processing, obtains fast-curing epoxy resin paste;
C, epoxy paste is coated uniformly on the upper and lower of polyethylene support film using scraper, forms 0.17~0.18mm Epoxy paste film layer;
It d, is 260g/m by surface density2The beautiful T700 chopped carbon fiber felt B blowing in east is laid on underlying epoxy paste film, Then upper layer epoxy paste film is covered on carbon fiber felt surface, builds up epoxy paste film+chopped carbon fiber felt+asphalt mixtures modified by epoxy resin Rouge pastes film three-decker, is overpressurized and is vented, and so that epoxy paste is sufficiently infiltrated carbon fiber and forms chopped carbon fiber felt resin Composite sheet, then winding or packing-box design;
E, the drying chamber maturation process by the chopped carbon fiber felt resin compounded sheet material of winding or packing-box design at 50 DEG C 40hrs thickens epoxy paste, obtains chopped carbon fiber felt prepreg.
The performance test of chopped carbon fiber felt prepreg:
1. being thickened using TADHR-2 rheometer test fast-curing epoxy resin composition and polyhydric isocyanate compound Initial viscosity of the epoxy paste that agent is mixed to get in proportion at 25 DEG C is 11Pa.s.
2. epoxy resin of the chopped carbon fiber felt prepreg after maturation process can be recycled using TADHR-2 rheometer test Pasting the viscosity at 25 DEG C is 1270Pa.s.
3. respectively cutting size in left, center, right position is 10 × 10cm2Recyclable chopped carbon fiber felt prepreg, weighing Quality is M, takes the chopped carbon fiber felt of same size, and weighing quality is m, calculates recyclable chopped carbon fiber by formula Felt prepreg resin content:Carbon fiber content: Obtaining resin average content is R/C=61.7%, carbon fiber content weight ratio are 50%.
4. hot plate is heated to 150 ± 1 DEG C using hot plate method, ring contained by chopped carbon fiber felt prepreg is can be recycled in test 2g The gel time of oxygen resin is 46sec.
5. rapid shaping is prepared and tested with embodiment 1 with epoxy chopped carbon fiber felt prepreg composite plate, survey Obtain the 0 ° of direction tensile strength 317MPa, stretch modulus 22.8GPa, bending strength 361Mpa of composite board, bending modulus 22.0Gpa;90 ° of direction tensile strength 331MPa, stretch modulus 26.8GPa, bending strength 441Mpa, bending modulus 27.8Gpa, Good mechanical properties;DMA is used to measure Tg with three-point bending mode as 121 DEG C.
Embodiment 5:
A kind of rapid shaping epoxy chopped carbon fiber felt prepreg, including surface density are 300g/m2The beautiful T700 recycling in east The weight percent of chopped carbon fiber felt C is 50%, fast-curing epoxy resin composition and methyl diphenylene diisocyanate The fast-curing epoxy resin paste weight percent obtained after thickener mixing is 50%;Wherein, fast-curing epoxy resin group The weight ratio for closing object and polyhydric isocyanate compound thickener is 100:9.
A kind of production technology of rapid shaping epoxy chopped carbon fiber felt prepreg, including following process:
A, by epoxy resin, the reactive diluent containing three epoxy-functionals, polyethylene glycol, hydrazides curing agent, organic urea With modified imidazole curing accelerator, size, defoaming agent and inner pattern releasing agent applicable are added in twin shaft resin mixing machine and stir to get quickly Cured epoxy resin compositions store in resin storage tank;
B, by fast-curing epoxy resin composition and methyl diphenylene diisocyanate thickener with the weight ratio of 100:9 It is added separately in resin charging pump and thickener charging pump, stirs at low speed 10~15min, be uniformly mixed, while by taking out online Vacuum plant carries out vacuum defoamation processing, obtains fast-curing epoxy resin paste;
C, epoxy paste is coated uniformly on the upper and lower of polyethylene support film using scraper, forms 0.19~0.20mm Epoxy paste film layer;
It d, is 300g/m by surface density2The beautiful T700 recycling chopped carbon fiber felt C blowing in east is laid in underlying epoxy paste On film, upper layer epoxy paste film is then covered on carbon fiber felt surface, build up epoxy paste film+chopped carbon fiber felt+ Epoxy paste film three-decker, is overpressurized and is vented, and so that epoxy paste is sufficiently infiltrated carbon fiber and is formed chopped carbon fiber Felt resin compounded sheet material, then winding or packing-box design;
E, the drying chamber maturation process by the chopped carbon fiber felt resin compounded sheet material of winding or packing-box design at 50 DEG C 40hrs thickens epoxy paste, obtains chopped carbon fiber felt prepreg.
The performance test of chopped carbon fiber felt prepreg:
1. being thickened using TADHR-2 rheometer test fast-curing epoxy resin composition and polyhydric isocyanate compound Initial viscosity of the epoxy paste that agent is mixed to get in proportion at 25 DEG C is 21Pa.s.
2. epoxy resin of the chopped carbon fiber felt prepreg after maturation process can be recycled using TADHR-2 rheometer test Pasting the viscosity at 25 DEG C is 1800Pa.s.
3. respectively cutting size in left, center, right position is 10 × 10cm2Recyclable chopped carbon fiber felt prepreg, weighing Quality is M, takes the chopped carbon fiber felt of same size, and weighing quality is m, calculates recyclable chopped carbon fiber by formula Felt prepreg resin content:Carbon fiber content: Obtaining resin average content is R/C=61.0%, carbon fiber content weight ratio are 50%.
4. hot plate is heated to 150 ± 1 DEG C using hot plate method, ring contained by chopped carbon fiber felt prepreg is can be recycled in test 2g The gel time of oxygen resin is 50sec.
5. rapid shaping is prepared and tested with embodiment 1 with epoxy chopped carbon fiber felt prepreg composite plate, survey Obtain ° direction tensile strength 348MPa, stretch modulus 25.4GPa, bending strength 461Mpa of composite board, bending modulus 25.3Gpa;90 ° of direction tensile strength 370MPa, stretch modulus 31.2GPa, bending strength 540Mpa, bending modulus 31.0Gpa, Good mechanical properties;DMA is used to measure Tg with three-point bending mode as 123 DEG C.
Embodiment 6:
A kind of rapid shaping epoxy chopped carbon fiber felt prepreg, including surface density are 300g/m2ELG recycles the carbon that is chopped The weight percent of fibrofelt A2 is 30%, fast-curing epoxy resin composition and methyl diphenylene diisocyanate thickener The fast-curing epoxy resin paste weight percent obtained after mixing is 70%;Wherein, fast-curing epoxy resin composition and The weight ratio of polyhydric isocyanate compound thickener is 100:11.
A kind of production technology of rapid shaping epoxy chopped carbon fiber felt prepreg, including following process:
A, by epoxy resin, the reactive diluent containing three epoxy-functionals, polyethylene glycol, hydrazides curing agent, organic urea With modified imidazole curing accelerator, size, defoaming agent and inner pattern releasing agent applicable are added in twin shaft resin mixing machine and stir to get quickly Cured epoxy resin compositions store in resin storage tank;
B, by fast-curing epoxy resin composition and methyl diphenylene diisocyanate thickener with the weight ratio of 100:9 It is added separately in resin charging pump and thickener charging pump, stirs at low speed 10~15min, be uniformly mixed, while by taking out online Vacuum plant carries out vacuum defoamation processing, obtains fast-curing epoxy resin paste;
C, epoxy paste is coated uniformly on the upper and lower of polyethylene support film using scraper, forms 0.19~0.20mm Epoxy paste film layer;
It d, is 300g/m by surface density2ELG recycling chopped carbon fiber felt A2 blowing is laid in underlying epoxy paste film layer On, upper layer epoxy paste film is then covered on carbon fiber felt surface, builds up epoxy paste film+chopped carbon fiber felt+ring Oxygen resin paste film three-decker, is overpressurized and is vented, and so that epoxy paste is sufficiently infiltrated carbon fiber and is formed chopped carbon fiber felt Resin compounded sheet material, then winding or packing-box design;
E, the drying chamber maturation process by the chopped carbon fiber felt resin compounded sheet material of winding or packing-box design at 50 DEG C 20hrs thickens epoxy paste, obtains chopped carbon fiber felt prepreg.
The performance test of chopped carbon fiber felt prepreg:
1. being thickened using TADHR-2 rheometer test fast-curing epoxy resin composition and polyhydric isocyanate compound Initial viscosity of the epoxy paste that agent is mixed to get in proportion at 25 DEG C is 27Pa.s.
2. epoxy resin of the chopped carbon fiber felt prepreg after maturation process can be recycled using TADHR-2 rheometer test Pasting the viscosity at 25 DEG C is 5500Pa.s.
3. respectively cutting size in left, center, right position is 10 × 10cm2Recyclable chopped carbon fiber felt prepreg, weighing Quality is M, takes the chopped carbon fiber felt of same size, and weighing quality is m, calculates recyclable chopped carbon fiber by formula Felt prepreg resin content:Carbon fiber content: Obtaining resin average content is R/C=65.0%, carbon fiber content weight ratio is up to 55%.
4. hot plate is heated to 150 ± 1 DEG C using hot plate method, ring contained by chopped carbon fiber felt prepreg is can be recycled in test 2g The gel time of oxygen resin is 58sec.
Comparative example 1
A, the fast-curing epoxy resin composition each component of use and ratio are same as Example 1, but dicyandiamide cure Agent is without micronization processes, and granularmetric analysis D95 is less than 20 μm, and about 8 μm of average grain diameter, fast-curing epoxy resin paste mixing is same Embodiment 1;
B, mixed fast-curing epoxy resin paste is poured into glue groove, is coated uniformly on epoxy paste using scraper On upper and lower layer PE film, 0.19~0.20mm epoxy paste film is formed;
It c, is 300g/m by surface density2ELG recycling chopped carbon fiber felt A2 blowing is laid on underlying epoxy paste film, Then upper layer epoxy paste film is covered on carbon fiber felt surface, remaining step obtains recyclable chopped carbon fiber with embodiment 1 Tie up felt prepreg.
Rapid shaping is assessed and is tested with epoxy chopped carbon fiber felt prepreg:
1. rapid shaping epoxy chopped carbon fiber felt prepreg is prepared, there is powder residual on surface, due to curing agent Without micronization processes, partial size is chopped greatly very much carbon fiber felt filtering, can not enter inside chopped carbon fiber felt with resin;It can return Receiving epoxy paste contained by chopped carbon fiber felt prepreg uses hot plate method to test 150 DEG C of gel times as 150sec, uses Its viscosity of TADHR-2 rheometer test is 650pa.s.
2. rapid shaping epoxy chopped carbon fiber felt prepreg is prepared, there is powder residual on surface, due to curing agent Without micronization processes, partial size is chopped greatly very much carbon fiber felt filtering, can not enter inside chopped carbon fiber felt with resin;It can return Receiving epoxy paste contained by chopped carbon fiber felt prepreg uses hot plate method to test 150 DEG C of gel times as 150sec, uses Its viscosity of TADHR-2 rheometer test is 650pa.s.
3. rapid shaping is prepared with epoxy chopped carbon fiber felt prepreg composite plate and is tested with embodiment 1, but Hot pressing time is 20min, and the composite board poor appearance of preparation, residual is a large amount of to have neither part nor lot in reaction curing agent powder.
It is learnt by the above experimental data, compared with contrast groups, performance has epoxy chopped carbon fiber felt prepreg of the invention Biggish raising, the partial size including reducing composition epoxy resin, improves the viscosity of epoxy paste, when shortening hot pressing Between, made plate appearance is good, and for the waste for causing material in process flow, weatherability environmental friendliness is high, has and promotes Meaning.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention Protection scope.

Claims (10)

1. a kind of rapid shaping epoxy chopped carbon fiber felt prepreg, which is characterized in that the chopped carbon fiber felt prepreg, The chopped carbon fiber felt for being 30~50% including weight percent, the fast-curing epoxy resin that weight percent is 50~70% Paste, the fast-curing epoxy resin paste are mixed by fast-curing epoxy resin composition and polyhydric isocyanate compound thickener Obtained after conjunction, the weight ratio of fast-curing epoxy resin composition and polyhydric isocyanate compound thickener be 100:5~ 20。
2. epoxy chopped carbon fiber felt prepreg according to claim 1, which is characterized in that the chopped carbon fiber felt is adopted With one or more of the chopped silk of recycling carbon fiber, the chopped silk of continuous carbon fibre and the short silk of carbon fibre fabric side crops Mixture is made through no spinning process;Chopped carbon fiber length in the chopped carbon fiber felt is 5~200mm, and felt surface density is 100~1000g/m2
3. epoxy chopped carbon fiber felt prepreg according to claim 1 or 2, which is characterized in that the chopped carbon fiber Chopped carbon fiber length in felt is 30~100mm, and felt surface density is 200~600g/m2
4. a kind of rapid shaping according to claim 1 production technology of epoxy chopped carbon fiber felt prepreg, special Sign is, including following process:
A, epoxy resin, diluent, polyethylene glycol, epoxy hardener, promotor and auxiliary agent are added in twin shaft resin mixing machine Fast-curing epoxy resin composition is stirred to get, and is stored in resin storage tank;
B, fast-curing epoxy resin composition and polyhydric isocyanate compound thickener are added separately to resin in proportion It in charging pump and thickener charging pump, stirs at low speed, is uniformly mixed, while vacuum defoamation is carried out by online vacuum evacuation device Reason obtains fast-curing epoxy resin paste;
C, fast-curing epoxy resin paste is coated uniformly on to the surface of upper and lower carrier film using scraper, forms epoxy paste Film layer;
D, then fast-curing epoxy resin paste film layer be covered on chopped carbon fiber felt upper and lower surfaces, build up epoxy paste film+ Chopped carbon fiber felt+epoxy paste film three-decker, is overpressurized and is vented, epoxy paste is made sufficiently to infiltrate carbon fiber Chopped carbon fiber felt epoxy resin composite sheet is formed, then winding or packing-box design;
E, increase epoxy paste in drying chamber maturation process the chopped carbon fiber felt resin compounded sheet material of winding or packing-box design It is thick, obtain chopped carbon fiber felt prepreg.
5. a kind of rapid shaping according to claim 4 production technology of epoxy chopped carbon fiber felt prepreg, special Sign is, the diluent is the reactive diluent containing more than one epoxy-functional, the epoxy hardener be aromatic amine, Dicyandiamide class, organic hydrazides, modified aromatic amine, modified dicyandiamine class, modified organic hydrazides, in linear phenolic resin It is one or more kinds of;The promotor be one or both of organic urea, modified organic urea, imidazoles and modified imidazole with On;The auxiliary agent includes size, defoaming agent and inner pattern releasing agent applicable.The epoxy hardener, promotor and auxiliary agent etc. are partial size 100 μm solid powder below.
6. a kind of rapid shaping according to claim 4 production technology of epoxy chopped carbon fiber felt prepreg, special Sign is, the diluent is the reactive diluent containing three epoxy-functionals, and the epoxy hardener is hydrazides curing agent, double One or both of cyanamide curing agent, the promotor are organic urea and modified imidazole curing accelerator, the solid powder Partial size is 4~5 μm.
7. a kind of rapid shaping according to claim 4 production technology of epoxy chopped carbon fiber felt prepreg, special Sign is that the polyhydric isocyanate compound thickener is methyl diphenylene diisocyanate.
8. a kind of rapid shaping according to claim 4 or 5 production technology of epoxy chopped carbon fiber felt prepreg, It is characterized in that, the weight ratio of fast-curing epoxy resin composition and polyhydric isocyanate compound thickener described in step b For 100:5~20, when a length of 10~15min of the stirring.
9. a kind of rapid shaping according to claim 4 production technology of epoxy chopped carbon fiber felt prepreg, special Sign is that carrier film described in step c is polyethylene film or mylar, and the thicknesses of layers is 0.02~0.06mm,.
10. a kind of rapid shaping according to claim 5 production technology of epoxy chopped carbon fiber felt prepreg, special Sign is that curing temperature is 10~70 DEG C in step e, and the time is 1~200hrs.
CN201810923453.XA 2018-08-14 2018-08-14 A kind of rapid shaping epoxy chopped carbon fiber felt prepreg and its production technology Withdrawn CN109181226A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110696220A (en) * 2019-09-20 2020-01-17 艾达索高新材料芜湖有限公司 Manufacturing process of degradable carbon felt prepreg and cover inner plate

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101096443A (en) * 2007-07-10 2008-01-02 武汉理工大学 Method for preparing epoxy sheet mould plastic
CN106808711A (en) * 2015-12-01 2017-06-09 宁波华翔汽车纤维研发有限公司 A kind of rapid shaping wet method mould pressing process of carbon fiber auto parts and components
CN107471679A (en) * 2017-08-08 2017-12-15 惠州市海龙模具塑料制品有限公司 Carbon fibre composite manufacture method
CN107685775A (en) * 2016-08-03 2018-02-13 常州中兴华达科技有限公司 Automobile water tank upper beam made of carbon fiber reinforcing plate and its manufacture method
CN108189421A (en) * 2017-11-22 2018-06-22 艾达索高新材料芜湖有限公司 Chopped carbon fiber felt composite material moulding process and its degradation and recovery method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101096443A (en) * 2007-07-10 2008-01-02 武汉理工大学 Method for preparing epoxy sheet mould plastic
CN106808711A (en) * 2015-12-01 2017-06-09 宁波华翔汽车纤维研发有限公司 A kind of rapid shaping wet method mould pressing process of carbon fiber auto parts and components
CN107685775A (en) * 2016-08-03 2018-02-13 常州中兴华达科技有限公司 Automobile water tank upper beam made of carbon fiber reinforcing plate and its manufacture method
CN107471679A (en) * 2017-08-08 2017-12-15 惠州市海龙模具塑料制品有限公司 Carbon fibre composite manufacture method
CN108189421A (en) * 2017-11-22 2018-06-22 艾达索高新材料芜湖有限公司 Chopped carbon fiber felt composite material moulding process and its degradation and recovery method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110696220A (en) * 2019-09-20 2020-01-17 艾达索高新材料芜湖有限公司 Manufacturing process of degradable carbon felt prepreg and cover inner plate

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