CN106750444A - A kind of fibre reinforced vinyl ester resin SMC prepregs and preparation method thereof and application method - Google Patents
A kind of fibre reinforced vinyl ester resin SMC prepregs and preparation method thereof and application method Download PDFInfo
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- CN106750444A CN106750444A CN201611251408.1A CN201611251408A CN106750444A CN 106750444 A CN106750444 A CN 106750444A CN 201611251408 A CN201611251408 A CN 201611251408A CN 106750444 A CN106750444 A CN 106750444A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
- C08L63/10—Epoxy resins modified by unsaturated compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
- C08J2363/10—Epoxy resins modified by unsaturated compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2433/10—Homopolymers or copolymers of methacrylic acid esters
- C08J2433/12—Homopolymers or copolymers of methyl methacrylate
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Abstract
A kind of fibre reinforced vinyl ester resin SMC prepregs and preparation method thereof and application method, it is related to a kind of chopped carbon fiber enhancing SMC and preparation method thereof application method.The purpose of the present invention will solve the problems, such as that the processing characteristics of existing glass fiber reinforcement sheet molding compound cannot meet the demand of automobile industry.A kind of fibre reinforced vinyl ester resin SMC prepregs are from top to bottom followed successively by film layer, sandwich layer and lower film layer.Preparation method：First, material is weighed；2nd, resin paste is prepared；3rd, using pressure roll repeatedly roll pressing for impregnating resin chopped carbon fiber；4th, thickening curing obtains fibre reinforced vinyl ester resin SMC prepregs.Application method：Cut out and be stacked in mould, pressurize solidification obtains carbon fiber SMC composites.Advantage：The impact flexibility of carbon fiber SMC composites is significantly improved.Carbon fiber SMC composites prepared by the present invention are mainly used in being used as automotive material.
Description
Technical field
The invention belongs to auto industry high-performance SMC preparation fields, and in particular to a kind of chopped carbon fiber enhancing SMC and
Its preparation method application method.
Background technology
Sheet molding compound (SMC) compression molding is a kind of advanced polymer matrix composites forming method.Its preparation method
It is larger pre- compared with stable sheet to form a kind of viscosity by thickening first by thermosetting resin, reinforcing fiber and various auxiliary agents
Batch mixing, then the premix is cut into certain size, lay and be molded in mould.The composite material and preparation method thereof is molded
Cycle is short, low production cost, good work environment, the basic waste without leftover pieces, and the properties of product are more excellent.Institute
Automobile, health care, sports goods, building, chemical anticorrosion, electronic/electrical gas even Aero-Space are just subject to once coming out
Deng the favor in field.
Obtained using glass fiber reinforcement unsaturated-resin more than initial SMC, this SMC meets to a certain extent
The automotive light weight technology requirement of specific period.But the fast-developing performance to sheet molding compound of auto industry is proposed more in recent years
The lightweight requirements sheet molding compound of requirement high, particularly automobile continues to develop towards the direction of high-strength light.Based on this biography
The glass fiber reinforcement sheet molding compound of system can not meet the demand of automobile industry.
The content of the invention
The processing characteristics that the purpose of the present invention will solve existing glass fiber reinforcement sheet molding compound cannot meet garage
The problem of the demand of industry, and a kind of fibre reinforced vinyl ester resin SMC prepregs and preparation method thereof and user are provided
Method.
A kind of fibre reinforced vinyl ester resin SMC prepregs are from top to bottom followed successively by film layer, sandwich layer and lower film layer；
The upper film layer is identical with the material of lower membrane, is polyethylene film or polyester film；The sandwich layer is by weight by 100
Part vinyl ester resin, 20~50 parts of low shrinkage additives, 60~180 parts of chopped carbon fibers, 1~2 part of A classes thickener, 2~25
Part B classes thickener, 0.8~1.2 part of high-temperature curing agent, 0.2~0.4 part of low temperature curing agent, 0.05~0.1 part of polymerization inhibitor and 1~2
Part inner pattern releasing agent applicable is prepared from.
A kind of preparation method of fibre reinforced vinyl ester resin SMC prepregs, is specifically realized by the following steps：
First, weigh by weight 100 parts of vinyl ester resins, 20~50 parts of low shrinkage additives, 60~180 parts be chopped
Carbon fiber, 1~2 part of A classes thickener, 2~25 parts of B classes thickeners, 0.8~1.2 part of high-temperature curing agent, 0.2~0.4 part of low-temperature solid
Agent, 0.05~0.1 part of polymerization inhibitor and 1~2 part of inner pattern releasing agent applicable；
2nd, 20~50 parts of low shrinkage additives will being weighed in step one, 0.05~0.1 part of polymerization inhibitor, take off in 1~2 part
Mould agent, 0.8~1.2 part of high-temperature curing agent, 0.2~0.4 part of low temperature curing agent, 1~2 part of A classes thickener and 2~25 parts of B classes increase
During thick dose sequentially adds the 100 parts of vinyl ester resins weighed in step one, and stir, obtain resin paste；
3rd, the resin paste prepared by 60~180 parts of chopped carbon fibers and step 2 that will be weighed in step one is uniformly distributed
Between upper film layer and lower film layer, and resin paste thorough impregnation is set to be chopped carbon using film layer on pressure roll repeatedly roll-in and lower film layer
Fiber, forms " sandwich " structure, and winds, and obtains the chopped carbon fiber of impregnating resin；
4th, the chopped carbon fiber of the impregnating resin for obtaining step 3 is placed in carries out thickening curing in curing chamber, obtain carbon
Fiber reinforced vinyl ester resin SMC prepregs.
A kind of application method of fibre reinforced vinyl ester resin SMC prepregs, is specifically realized by the following steps：
Size according to cavity body of mould is calculated and weighs fibre reinforced vinyl ester resin SMC prepregs, then to carbon
Fiber reinforced vinyl ester resin SMC prepregs are cut out, by the upper film of fibre reinforced vinyl ester resin SMC prepregs
Layer and lower film layer are stacked in after throwing off and are preheated in 110 DEG C~150 DEG C of mould, and 3.0MPa~10.0MPa is forced into after matched moulds,
And the heat-insulation pressure keeping solidification in the case where temperature is 110 DEG C~150 DEG C and pressure is 3.0MPa~10.0MPa, per the carbon fiber of 1mm thickness
The hardening time of SMC composites is 30s~60s, obtains carbon fiber SMC composites.
Advantage of the present invention：First, the present invention is with carbon fiber and vinyl ester resin as main raw material(s), and uses composite thickening
Agent and composite curing agent, the prepared SMC prepregs thickening time is short, period of storage is long, and solidification temperature needed for molding is low, solidification
Time is short；2nd, up to 60wt%, proportion is 1.2~1.6 to the carbon fiber content of carbon fiber SMC composites prepared by the present invention,
When carbon fiber SMC thickness of composite material is 6mm, its stretch modulus reaches 30~50GPa, and tensile strength reaches 200~
300MPa, bending modulus reaches 30~60GPa, and bending strength reaches 350~500MPa, and impact flexibility reaches 300~500KJ/
m2。
Carbon fiber SMC composites prepared by the present invention are mainly used in being used as automotive material.
Specific embodiment
Specific embodiment one：Present embodiment is a kind of fibre reinforced vinyl ester resin SMC prepregs by up to
Under be followed successively by film layer, sandwich layer and lower film layer；The upper film layer is identical with the material of lower membrane, is polyethylene film or polyester
Film；The sandwich layer is chopped by 100 parts of vinyl ester resins, 20~50 parts of low shrinkage additives, 60~180 parts by weight
Carbon fiber, 1~2 part of A classes thickener, 2~25 parts of B classes thickeners, 0.8~1.2 part of high-temperature curing agent, 0.2~0.4 part of low-temperature solid
Agent, 0.05~0.1 part of polymerization inhibitor and 1~2 part of inner pattern releasing agent applicable are prepared from.
Fibre reinforced sheet molding compound has been increasingly becoming the focus of research.Carbon fiber sheets moulding compound does not have all the time
Obtain extensive exploitation and utilize main reason is that the expensive price of carbon fiber.The decline year by year of carbon fiber price causes that carbon is fine
Dimension enhancing sheet molding compound is applied to general-utility car on a large scale becomes possibility.In terms of resin, vinyl ester resin (VE)
The excellent curing performance of unsaturated-resin is not only provided with, epoxy resin high temperature resistant, decay resistance is also retains.Therefore, second
Alkenyl esters resin is more preferably selected as SMC resin matrixes.
In addition to resin matrix and reinforcing fiber, SMC indispensable composition also has various auxiliary agents, such as thickener, curing agent
Deng.Existing technology takes single auxiliary agent, but single auxiliary agent to tend not to meet the integration requirement to multiple performance.Example
Such as, common thickener magnesia thickening speed is slow, but solution thickening properties are good；Diisocyanate cpd thickening speed is very fast,
But solution thickening properties are poor.High-temperature curing agent can extend the period of storage of SMC, can equally improve the temperature of molding；Low temperature curing agent
Carried out at low temperature though can allow and solidify, but the storage period of SMC can be shortened.
Specific embodiment two：Present embodiment is with the difference of specific embodiment one：The vinyl ester resin
It is thickening type vinyl ester resin.Other are identical with specific embodiment one.
Specific embodiment three：One of present embodiment and specific embodiment one or two difference is：The lower shrinkage
Additive be thermoplastic polymer or block copolymer, specially polyvinyl acetate, polymethyl methacrylate, polyurethane,
One kind or wherein several mixtures in polystyrene and SBS.Other with it is specific
Implementation method one or two is identical.
Specific embodiment four：One of present embodiment and specific embodiment one to three difference is：The chopped carbon
Fiber is that length is the carbon fiber of 0.3mm~50mm.Other are identical with specific embodiment one to three.
Specific embodiment five：One of present embodiment and specific embodiment one to four difference is：The A classes thickening
Agent is II A metal oxides of activity or II A hydroxide of activity, specially magnesia, calcium oxide, magnesium hydroxide or hydrogen-oxygen
Change calcium.Other are identical with specific embodiment one to four.
Specific embodiment six：One of present embodiment and specific embodiment one to five difference is：The B classes thickening
Agent is diisocyanate and its compound, specially toluene di-isocyanate(TDI) and its compound or 4, and 4 '-diphenyl methane two is different
Cyanate and its compound.Other are identical with specific embodiment one to five.
Specific embodiment seven：One of present embodiment and specific embodiment one to six difference is：The high temperature is consolidated
Agent is peroxidized t-butyl perbenzoate, cumyl peroxide, methyl ethyl ketone peroxide and 1,1- di-tert-butyl peroxide hexamethylenes
One kind or wherein several mixtures in alkane.Other are identical with specific embodiment one to six.
Specific embodiment eight：One of present embodiment and specific embodiment one to seven difference is：The low-temperature solid
Agent is benzoyl peroxide, tert-butyl hydroperoxide -2 ethyl hexanoic acid ester and double (4- tert-butylcyclohexyls) peroxy dicarbonates
One kind or wherein several mixtures in ester.Other are identical with specific embodiment one to seven.
Specific embodiment nine：One of present embodiment and specific embodiment one to eight difference is：The polymerization inhibitor
It is the mixture of one or both of hydroquinones and 1,4-benzoquinone.Other are identical with specific embodiment one to eight.
Specific embodiment ten：One of present embodiment and specific embodiment one to nine difference is：The interior demoulding
Agent is LCFA and its salt, specially in stearic acid, lead stearate, zinc stearate, magnesium stearate and calcium stearate
Plant or wherein several mixtures.Other are identical with specific embodiment one to nine.
Specific embodiment 11：Present embodiment is a kind of system of fibre reinforced vinyl ester resin SMC prepregs
Preparation Method, is specifically realized by the following steps：
First, weigh by weight 100 parts of vinyl ester resins, 20~50 parts of low shrinkage additives, 60~180 parts be chopped
Carbon fiber, 1~2 part of A classes thickener, 2~25 parts of B classes thickeners, 0.8~1.2 part of high-temperature curing agent, 0.2~0.4 part of low-temperature solid
Agent, 0.05~0.1 part of polymerization inhibitor and 1~2 part of inner pattern releasing agent applicable；
2nd, 20~50 parts of low shrinkage additives will being weighed in step one, 0.05~0.1 part of polymerization inhibitor, take off in 1~2 part
Mould agent, 0.8~1.2 part of high-temperature curing agent, 0.2~0.4 part of low temperature curing agent, 1~2 part of A classes thickener and 2~25 parts of B classes increase
During thick dose sequentially adds the 100 parts of vinyl ester resins weighed in step one, and stir, obtain resin paste；
3rd, the resin paste prepared by 60~180 parts of chopped carbon fibers and step 2 that will be weighed in step one is uniformly distributed
Between upper film layer and lower film layer, and resin paste thorough impregnation is set to be chopped carbon using film layer on pressure roll repeatedly roll-in and lower film layer
Fiber, forms " sandwich " structure, and winds, and obtains the chopped carbon fiber of impregnating resin；
4th, the chopped carbon fiber of the impregnating resin for obtaining step 3 is placed in carries out thickening curing in curing chamber, obtain carbon
Fiber reinforced vinyl ester resin SMC prepregs.
Specific embodiment 12：Present embodiment is with the difference of specific embodiment 11：Described in step
Vinyl ester resin is thickening type vinyl ester resin.Other are identical with specific embodiment 11.
Specific embodiment 13：One of present embodiment and specific embodiment 11 or 12 difference is：Step
Low shrinkage additive described in one is thermoplastic polymer or block copolymer, specially polyvinyl acetate, polymethyl
One kind in sour methyl esters, polyurethane, polystyrene and SBS is wherein several mixed
Compound.Other are identical with specific embodiment 11 or 12.
Specific embodiment 14：Present embodiment is with the difference of specific embodiment 11 to one of 13：Step
Chopped carbon fiber described in one is that length is the carbon fiber of 0.3mm~50mm.Other and the three-phase of specific embodiment ten one to ten
Together.
Specific embodiment 15：Present embodiment is with the difference of specific embodiment 11 to one of 14：Step
The thickeners of A classes described in are II A metal oxides of activity or II A hydroxide of activity, specially magnesia, oxidation
Calcium, magnesium hydroxide or calcium hydroxide.Other are identical with specific embodiment 11 to 14.
Specific embodiment 16：Present embodiment is with the difference of specific embodiment 11 to one of 15：Step
The thickeners of B classes described in are diisocyanate and its compound, specially toluene di-isocyanate(TDI) and its compound or 4,4 '-
Methyl diphenylene diisocyanate and its compound.Other are identical with specific embodiment 11 to 15.
Specific embodiment 17：Present embodiment is with the difference of specific embodiment 11 to one of 16：Step
High-temperature curing agent described in one is peroxidized t-butyl perbenzoate, cumyl peroxide, methyl ethyl ketone peroxide and the uncles of 1,1- bis-
One kind or wherein several mixtures in butyl peroxy hexamethylene.Other are identical with specific embodiment 11 to 16.
Specific embodiment 18：Present embodiment is with the difference of specific embodiment 11 to one of 17：Step
Low temperature curing agent described in one is benzoyl peroxide, tert-butyl hydroperoxide -2 ethyl hexanoic acid ester and double (4- t-butylcyclohexyls
Base) one kind in peroxy dicarbonate or wherein several mixtures.Other are identical with specific embodiment 11 to 17.
Specific embodiment 19：Present embodiment is with the difference of specific embodiment 11 to one of 18：Step
Polymerization inhibitor described in one is the mixture of one or both of hydroquinones and 1,4-benzoquinone.Other and specific embodiment 11
It is identical to 18.
Specific embodiment 20：Present embodiment is with the difference of specific embodiment 11 to one of 19：Step
Inner pattern releasing agent applicable described in one be LCFA and its salt, specially stearic acid, lead stearate, zinc stearate, magnesium stearate and
One kind or wherein several mixtures in calcium stearate.Other are identical with specific embodiment 11 to 19.
Specific embodiment 21：Present embodiment is with the difference of specific embodiment 11 to one of 20：Step
The thickness of fibre reinforced vinyl ester resin SMC prepregs described in rapid three is adjusted by the spacing of pressure roll.Other
It is identical with specific embodiment 11 to 20.
Specific embodiment 22：Present embodiment is with the difference of specific embodiment 11 to one of 21：
The temperature of curing is thickened in step 4 for 30~50 DEG C, the time for thickening curing is 5h~10h.Other and specific embodiment ten
One to 21 is identical.
Specific embodiment 23：Present embodiment is a kind of fibre reinforced vinyl ester resin SMC prepregs
Application method, is specifically realized by the following steps：
Size according to cavity body of mould is calculated and weighs fibre reinforced vinyl ester resin SMC prepregs, then to carbon
Fiber reinforced vinyl ester resin SMC prepregs are cut out, by the upper film of fibre reinforced vinyl ester resin SMC prepregs
Layer and lower film layer are stacked in after throwing off and are preheated in 110 DEG C~150 DEG C of mould, and 3.0MPa~10.0MPa is forced into after matched moulds,
And the heat-insulation pressure keeping solidification in the case where temperature is 110 DEG C~150 DEG C and pressure is 3.0MPa~10.0MPa, per the carbon fiber of 1mm thickness
The hardening time of SMC composites is 30s~60s, obtains carbon fiber SMC composites.
The present invention uses following verification experimental verifications effect of the present invention
Embodiment 1：A kind of fibre reinforced vinyl ester resin SMC prepregs are from top to bottom followed successively by film layer, sandwich layer
With lower film layer；The upper film layer is identical with the material of lower membrane, is polyethylene film or polyester film；The sandwich layer is by weight
Number by 100 parts of vinyl ester resins, 20 parts of low shrinkage additives, 160 parts of chopped carbon fibers, 1.2 parts of magnesia, 3 part two it is different
Cyanate, 1.2 parts of high-temperature curing agents, 0.3 part of low temperature curing agent, 0.05 part of hydroquinones and 1.5 parts of zinc stearates are prepared from.
The vinyl ester resin is thickening type vinyl ester resin.
The low shrinkage additive is polymethyl methacrylate.
The chopped carbon fiber is that length is the carbon fiber of 25mm.
The high-temperature curing agent is peroxidized t-butyl perbenzoate.
The low temperature curing agent is benzoyl peroxide.
Embodiment 2：A kind of preparation method of fibre reinforced vinyl ester resin SMC prepregs, specifically by following step
Rapid completion：
First, weigh by weight 100 parts of vinyl ester resins, 20 parts of low shrinkage additives, 160 parts of chopped carbon fibers,
1.2 parts of magnesia, 3 parts of diisocyanate, 1.2 parts of high-temperature curing agents, 0.3 part of low temperature curing agent, 0.05 part of hydroquinones and 1.5
Part zinc stearate；
2nd, 20~50 parts of low shrinkage additives will being weighed in step one, 0.05~0.1 part of polymerization inhibitor, take off in 1~2 part
Mould agent, 0.8~1.2 part of high-temperature curing agent, 0.2~0.4 part of low temperature curing agent, 1~2 part of A classes thickener and 2~25 parts of B classes increase
During thick dose sequentially adds the 100 parts of vinyl ester resins weighed in step one, and stir, obtain resin paste；
3rd, the resin paste prepared by 60~180 parts of chopped carbon fibers and step 2 that will be weighed in step one is uniformly distributed
Between upper film layer and lower film layer, and resin paste thorough impregnation is set to be chopped carbon using film layer on pressure roll repeatedly roll-in and lower film layer
Fiber, forms " sandwich " structure, and winds, and obtains the chopped carbon fiber of impregnating resin；
4th, the chopped carbon fiber of the impregnating resin for obtaining step 3 is placed in carries out thickening curing in curing chamber, obtain carbon
Fiber reinforced vinyl ester resin SMC prepregs.
Vinyl ester resin described in step one is thickening type vinyl ester resin.
Low shrinkage additive described in step one is polymethyl methacrylate.
Chopped carbon fiber described in step one is that length is the carbon fiber of 25mm.
High-temperature curing agent described in step one is peroxidized t-butyl perbenzoate.
Low temperature curing agent described in step one is benzoyl peroxide.
The spacing of pressure roll described in step 3 is 1mm.
The temperature of curing is thickened in step 4 for 40 DEG C, the time for thickening curing is 5h.
Embodiment 3：A kind of application method of fibre reinforced vinyl ester resin SMC prepregs, specifically by following step
Rapid completion：
Size according to cavity body of mould is calculated and weighs fibre reinforced vinyl ester resin SMC prepregs, then to carbon
Fiber reinforced vinyl ester resin SMC prepregs are cut out, by the upper film of fibre reinforced vinyl ester resin SMC prepregs
Layer and lower film layer are stacked in after throwing off and are preheated in 140 DEG C of mould, and 3.0MPa is forced into after matched moulds, and are 140 DEG C in temperature
It is heat-insulation pressure keeping solidification under 3.0MPa with pressure, hardening time is 6min, obtains the carbon fiber SMC composites that thickness is 6mm.
Fibre reinforced vinyl ester resin SMC prepregs described in embodiment 3 are prepared by embodiment 2.
It is to thickness prepared by existing glass fibre SMC (GF-SMC), existing carbon fiber SMC (CF-SMC) and embodiment 3
The mechanical property of carbon fiber SMC composites (CF/VE-SMC) of 6mm detected, as shown in table 1.
By the thickening time needed for the fibre reinforced vinyl ester resin SMC prepregs that table 1, this implementation are used
Short, period of storage is long；Temperature needed for molding is low, and pressure is small, and the dwell time is short；Obtained carbon fiber SMC Compound Material Engineerings
Can be excellent, particularly impact flexibility is significantly improved, and to increased it be used for the security of automotive material.
Table 1
Claims (10)
1. a kind of fibre reinforced vinyl ester resin SMC prepregs, it is characterised in that the fibre reinforced vinyl esters tree
Fat SMC prepregs are from top to bottom followed successively by film layer, sandwich layer and lower film layer；The upper film layer is identical with the material of lower membrane,
It is polyethylene film or polyester film；The sandwich layer is added by 100 parts of vinyl ester resins, 20~50 parts of lower shrinkages by weight
Plus agent, 60~180 parts of chopped carbon fibers, 1~2 part of A classes thickener, 2~25 parts of B classes thickeners, 0.8~1.2 part of hot setting
Agent, 0.2~0.4 part of low temperature curing agent, 0.05~0.1 part of polymerization inhibitor and 1~2 part of inner pattern releasing agent applicable are prepared from.
2. a kind of fibre reinforced vinyl ester resin SMC prepregs according to claim 1, it is characterised in that the second
Alkenyl esters resin is thickening type vinyl ester resin；The low shrinkage additive is thermoplastic polymer or block copolymer, tool
Body is common for polyvinyl acetate, polymethyl methacrylate, polyurethane, polystyrene and s-B-S block
One kind or wherein several mixtures in polymers.
3. a kind of fibre reinforced vinyl ester resin SMC prepregs according to claim 1, it is characterised in that described short
It is the carbon fiber of 0.3mm~50mm for length to cut carbon fiber.
4. a kind of fibre reinforced vinyl ester resin SMC prepregs according to claim 1, it is characterised in that the A
Class thickener is II A metal oxides of activity or II A hydroxide of activity, specially magnesia, calcium oxide, magnesium hydroxide
Or calcium hydroxide；The B classes thickener is diisocyanate and its compound, specially toluene di-isocyanate(TDI) and its compound
Or 4,4 '-methyl diphenylene diisocyanate and its compound.
5. a kind of fibre reinforced vinyl ester resin SMC prepregs according to claim 1, it is characterised in that the height
Warm curing agent is peroxidized t-butyl perbenzoate, cumyl peroxide, methyl ethyl ketone peroxide and 1,1- di-tert-butyl peroxides
One kind or wherein several mixtures in hexamethylene；The low temperature curing agent is benzoyl peroxide, tert-butyl hydroperoxide -2-
One kind or wherein several mixtures in ethylhexoate and double (4- tert-butylcyclohexyls) peroxy dicarbonates；The resistance
Poly- agent is the mixture of one or both of hydroquinones and 1,4-benzoquinone.
6. a kind of fibre reinforced vinyl ester resin SMC prepregs according to claim 1, it is characterised in that in described
Releasing agent is LCFA and its salt, specially in stearic acid, lead stearate, zinc stearate, magnesium stearate and calcium stearate
One kind or wherein several mixtures.
7. a kind of preparation method of fibre reinforced vinyl ester resin SMC prepregs as claimed in claim 1, its feature exists
Completed according to the following steps in it：
First, 100 parts of vinyl ester resins, 20~50 parts of low shrinkage additives, 60~180 parts of chopped carbon fibres are weighed by weight
Dimension, 1~2 part of A classes thickener, 2~25 parts of B classes thickeners, 0.8~1.2 part of high-temperature curing agent, 0.2~0.4 part of low-temperature setting
Agent, 0.05~0.1 part of polymerization inhibitor and 1~2 part of inner pattern releasing agent applicable；
2nd, 20~50 parts of low shrinkage additives will being weighed in step one, 0.05~0.1 part of polymerization inhibitor, 1~2 part of inner pattern releasing agent applicable,
0.8~1.2 part of high-temperature curing agent, 0.2~0.4 part of low temperature curing agent, 1~2 part of A classes thickener and 2~25 parts of B classes thickeners according to
In the 100 parts of vinyl ester resins weighed in secondary addition step one, and stir, obtain resin paste；
3rd, the resin paste prepared by 60~180 parts of chopped carbon fibers and step 2 that will be weighed in step one is uniformly distributed in
Between film layer and lower film layer, and make the chopped carbon of resin paste thorough impregnation fine using film layer on pressure roll repeatedly roll-in and lower film layer
Dimension, forms " sandwich " structure, and winds, and obtains the chopped carbon fiber of impregnating resin；
4th, the chopped carbon fiber of the impregnating resin for obtaining step 3 is placed in carries out thickening curing in curing chamber, obtain carbon fiber
Enhancing vinyl ester resin SMC prepregs.
8. a kind of preparation method of fibre reinforced vinyl ester resin SMC prepregs according to claim 7, its feature
It is that the thickness of the SMC prepregs of fibre reinforced vinyl ester resin described in step 3 is adjusted by the spacing of pressure roll
Section.
9. a kind of preparation method of fibre reinforced vinyl ester resin SMC prepregs according to claim 7, its feature
It is that the temperature of curing is thickened in step 4 is 30~50 DEG C, the time for thickening curing is 5h~10h.
10. a kind of application method of fibre reinforced vinyl ester resin SMC prepregs as claimed in claim 1, its feature
It is that it is completed according to the following steps：
Size according to cavity body of mould is calculated and weighs fibre reinforced vinyl ester resin SMC prepregs, then to carbon fiber
Enhancing vinyl ester resin SMC prepregs are cut out, by the upper film layer of fibre reinforced vinyl ester resin SMC prepregs and
Lower film layer is stacked in after throwing off and is preheated in 110 DEG C~150 DEG C of mould, is forced into 3.0MPa~10.0MPa after matched moulds, and
Temperature is 110 DEG C~150 DEG C and pressure is heat-insulation pressure keeping solidification under 3.0MPa~10.0MPa, the carbon fiber SMC of every 1mm thickness
The hardening time of composite is 30s~60s, obtains carbon fiber SMC composites.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611251408.1A CN106750444B (en) | 2016-12-29 | 2016-12-29 | Use method of carbon fiber reinforced vinyl ester resin SMC prepreg |
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| CN201611251408.1A CN106750444B (en) | 2016-12-29 | 2016-12-29 | Use method of carbon fiber reinforced vinyl ester resin SMC prepreg |
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| CN106750444B CN106750444B (en) | 2020-04-24 |
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| CN107778782A (en) * | 2017-12-05 | 2018-03-09 | 镇江海威新材料科技有限公司 | A kind of epoxy vinyl ester resin prepreg and preparation method thereof of rapid curing, high-performance and low-cost |
| CN108641342A (en) * | 2018-05-21 | 2018-10-12 | 江苏兆鋆新材料股份有限公司 | A kind of sheet molding compound and preparation method thereof for exempting from magnesia thickening |
| CN109608671A (en) * | 2018-12-05 | 2019-04-12 | 镇江利德尔复合材料有限公司 | A kind of preparation method of carbon fiber vinylite SMC composite material |
| CN109825040A (en) * | 2017-11-23 | 2019-05-31 | 比亚迪股份有限公司 | Resin combination and resin paste and fiber reinforced vinyl ester resin SMC and its preparation method and application and battery tray |
| CN110591406A (en) * | 2018-06-13 | 2019-12-20 | 郑州深澜动力科技有限公司 | Low-density high-flame-retardant SMC battery pack material, preparation method thereof and battery pack |
| CN111788258A (en) * | 2018-03-16 | 2020-10-16 | 三菱化学株式会社 | Sheet molding compound and carbon fiber composite material molded article |
| CN112537057A (en) * | 2020-11-26 | 2021-03-23 | 湖南碳谷新材料有限公司 | Carbon-carbon support ring preparation mold and preparation method |
| CN113444275A (en) * | 2021-06-18 | 2021-09-28 | 牧世复合材料科技(苏州)有限公司 | SMC prepreg cloth and preparation method thereof |
| CN114701227A (en) * | 2022-03-28 | 2022-07-05 | 贵州至当科技有限公司 | 0-degree or 90-degree continuous fiber reinforced CF-SMC sheet and preparation method thereof |
| CN115960455A (en) * | 2023-03-16 | 2023-04-14 | 亨弗劳恩(江苏)复合材料研发有限公司 | Colored zero-shrinkage carbon fiber reinforced SMC sheet molding compound and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109825040A (en) * | 2017-11-23 | 2019-05-31 | 比亚迪股份有限公司 | Resin combination and resin paste and fiber reinforced vinyl ester resin SMC and its preparation method and application and battery tray |
| CN107778782A (en) * | 2017-12-05 | 2018-03-09 | 镇江海威新材料科技有限公司 | A kind of epoxy vinyl ester resin prepreg and preparation method thereof of rapid curing, high-performance and low-cost |
| CN111788258A (en) * | 2018-03-16 | 2020-10-16 | 三菱化学株式会社 | Sheet molding compound and carbon fiber composite material molded article |
| US11512412B2 (en) * | 2018-03-16 | 2022-11-29 | Mitsubishi Chemical Corporation | Sheet molding compound and carbon fiber composite material molded article |
| CN108641342A (en) * | 2018-05-21 | 2018-10-12 | 江苏兆鋆新材料股份有限公司 | A kind of sheet molding compound and preparation method thereof for exempting from magnesia thickening |
| CN110591406A (en) * | 2018-06-13 | 2019-12-20 | 郑州深澜动力科技有限公司 | Low-density high-flame-retardant SMC battery pack material, preparation method thereof and battery pack |
| CN109608671A (en) * | 2018-12-05 | 2019-04-12 | 镇江利德尔复合材料有限公司 | A kind of preparation method of carbon fiber vinylite SMC composite material |
| CN112537057A (en) * | 2020-11-26 | 2021-03-23 | 湖南碳谷新材料有限公司 | Carbon-carbon support ring preparation mold and preparation method |
| CN113444275A (en) * | 2021-06-18 | 2021-09-28 | 牧世复合材料科技(苏州)有限公司 | SMC prepreg cloth and preparation method thereof |
| CN114701227A (en) * | 2022-03-28 | 2022-07-05 | 贵州至当科技有限公司 | 0-degree or 90-degree continuous fiber reinforced CF-SMC sheet and preparation method thereof |
| CN115960455A (en) * | 2023-03-16 | 2023-04-14 | 亨弗劳恩(江苏)复合材料研发有限公司 | Colored zero-shrinkage carbon fiber reinforced SMC sheet molding compound and preparation method thereof |
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Effective date of registration: 20210111 Address after: 213002 No.202 Donghai Road, Xinbei District, Changzhou City, Jiangsu Province Patentee after: Changzhou Rongxin composite material Co.,Ltd. Address before: 150001 No. 92 West straight street, Nangang District, Heilongjiang, Harbin Patentee before: HARBIN INSTITUTE OF TECHNOLOGY |