CN103448168A - Method for de-molding particle-reinforced and fiber-reinforced double-element composite material - Google Patents
Method for de-molding particle-reinforced and fiber-reinforced double-element composite material Download PDFInfo
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- CN103448168A CN103448168A CN2013103938813A CN201310393881A CN103448168A CN 103448168 A CN103448168 A CN 103448168A CN 2013103938813 A CN2013103938813 A CN 2013103938813A CN 201310393881 A CN201310393881 A CN 201310393881A CN 103448168 A CN103448168 A CN 103448168A
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Abstract
The invention discloses a method for de-molding a particle-reinforced and fiber-reinforced double-element composite material and belongs to the technical field of composite materials. The method comprises the steps of mold cleaning, epoxy resin mixing, adhesive mixing, adhesive coating, adhesion, fixing, curing and de-molding. By virtue of the method, the particle-reinforced and fiber-reinforced double-element composite material can be quickly de-molded.
Description
Technical field
The invention belongs to technical field of composite materials, be specifically related to the release method of a kind of particle, fiber double base reinforced composite.
Background technology
The general ejection technique of composite is to apply releasing agent on the surface of metal die, and the rear formation release agent coating that is heating and curing possesses good in imitating fruit, the demoulding of assisted recombination material.
Particle, fiber double base reinforced composite are a kind of of composite, and it is for the outer heat shield of type product.This composite is in solidification process, through 200 ℃, the HTHP effect of 10MPa, the solid particle of composite the inside under pressure, can destroy the release agent coating of die surface, occur directly to contact with mould, and under high temperature action, produce adhesion with the metal die performance, cause the final goods can't the demoulding, or piece occurs collapsing during the demoulding, lack the defects such as material, goods can't be used.Through market survey with to having the on probation of releasing agent product now, existing ten several releasing agents, as LPT-02, FE012-27763,1129,1325,1425A, W-4005 etc., all can't solve the release problems of this composite.
Summary of the invention
The objective of the invention is to address the above problem and provide a kind of can be by the method for the mould separating of particle, fiber double base reinforced composite and its composite.
The technical solution adopted in the present invention is:
The release method of a kind of particle, fiber double base reinforced composite comprises the following steps:
(1) particle, fiber double base reinforced composite mould are cleaned to described with industrial alcohol, then dried at normal temperatures;
(2) epoxy resin, dibutyl phthalate (DBP) and triethylene tetramine mixed and stir, forming epoxy resin composition, the mass percent between described epoxy resin, dibutyl phthalate (DBP) and triethylene tetramine is 100:5:12～15;
(3) ba phenolic resin mixed and stirs with the epoxy resin composition that step (2) obtains, forming adhesive, the mass percent between described ba phenolic resin and described epoxy resin composition is 1:1;
(4) adhesive step (3) obtained evenly is coated in the surface of polytetrafluoroethylene (PTFE) release cloth;
(5) polytetrafluoroethylene (PTFE) release cloth step (4) obtained pastes the working face of described particle, fiber double base reinforced composite mould, with vacuum bag, is fixed;
(6) particle step (5) obtained, fiber double base reinforced composite mould are heated and are solidified, and described heating and condition of cure are: heat up 2 hours from room temperature to 100 ℃, then under 100 ℃, be incubated 2 hours;
(7) when particle step (6) obtained, fiber double base reinforced composite mould naturally cool to not higher than 30 ℃ of room temperatures, vacuum bag is removed, working face at particle, fiber double base reinforced composite mould forms the solid separation layer, and particle, fiber double base reinforced composite mould complete the demoulding.
Further, in described step (1), with clean hairbrush, dip the working face that industrial alcohol cleans particle, fiber double base reinforced composite mould, until the working face of particle, fiber double base reinforced composite mould is without visible pollution, dust etc.
Preferably, the epoxy resin in described step (2) is E-51 epoxy resin.
Further, in described step (4), the polytetrafluoroethylene (PTFE) release cloth that cuts size is laid on clean Polypropylence Sheet, presses 100g/m
2ratio with hairbrush, described adhesive evenly is coated in to the surface of described polytetrafluoroethylene (PTFE) release cloth.
Further, in described step (5), described polytetrafluoroethylene (PTFE) release cloth is pasted to the working face of described particle, fiber double base reinforced composite mould, must bubble between the two is emptying.
Further, in described step (5), after being fixed with vacuum bag, vacuumized, described vacuum bag and described particle, fiber double base reinforced composite mould are fitted fully.
Further, in described step (6), described heating is carried out in baking oven.
The present invention has the following advantages:
The invention solves existing releasing agent and can not solve the problem that particle, fiber double base reinforced composite can not the demouldings from its mould.The method can not destroyed particle, fiber double base reinforced composite itself simultaneously, can not collapse the problems such as piece, scarce material during the demoulding, guarantees that this particle, fiber double base reinforced composite can be used.
The accompanying drawing explanation
The polytetrafluoroethylene (PTFE) release cloth that Fig. 1 provides for the embodiment of the present invention 1 pastes the structural representation of working face of the mould of particle, fiber double base reinforced composite.
The specific embodiment
Below in conjunction with drawings and embodiments, the present invention is further detailed explanation.
Embodiment 1
With reference to Fig. 1, the present embodiment provides the release method of a kind of particle, fiber double base reinforced composite, comprises the following steps:
(1) dip industrial alcohol with clean hairbrush and clean particle, fiber double base reinforced composite mould 2 working faces, until then the working face of particle, fiber double base reinforced composite mould 2 dries at normal temperatures without visible pollution, dust etc.This step cleans up the working face of particle, fiber double base reinforced composite mould 2, has guaranteed the effect of the later stage demoulding;
(2) E-51 epoxy resin, dibutyl phthalate (DBP) and triethylene tetramine mixed and stir, forming epoxy resin composition, the mass percent between epoxy resin, dibutyl phthalate (DBP) and triethylene tetramine is 100:5:12.This step has obtained epoxy resin composition, is a basic thing in the later stage adhesive, has guaranteed in the adhesive to also have the characteristic of epoxy resin;
(3) ba phenolic resin mixed and stirs with the epoxy resin composition that step (2) obtains, forming adhesive, the mass percent between ba phenolic resin and epoxy resin composition is 1:1;
(4) the polytetrafluoroethylene (PTFE) release cloth 1 that will cut size is laid on clean Polypropylence Sheet, presses 100g/m
2the adhesive that step (3) obtained with hairbrush of ratio evenly be coated in the surface of polytetrafluoroethylene (PTFE) release cloth 1.The polytetrafluoroethylene (PTFE) release cloth 1 of rubber cover stick is requisite article in knockout course;
(5) the polytetrafluoroethylene (PTFE) release cloth 1 step (4) obtained pastes the working face of particle, fiber double base reinforced composite mould 2, must bubble between the two is emptying; Finally with vacuum bag, be fixed, after vacuum bag is fixed, vacuumized, vacuum bag and particle, fiber double base reinforced composite mould 2 are fitted fully.Emphasize in this step that polytetrafluoroethylene (PTFE) release cloth 1 and working face are adjacent to, do not leave bubble, with vacuum bag, be fixed, after vacuum bag is fixed, vacuumized, the purpose of doing like this is to allow the tightr of the working face of polytetrafluoroethylene (PTFE) release cloth 1, particle, fiber double base reinforced composite mould 2 and vacuum bag combination, has guaranteed later stage heating and the carrying out of solidifying;
(6) particle step (5) obtained, fiber double base reinforced composite mould 2 are heated and are solidified in baking oven, and heating and condition of cure are: heat up 2 hours from 25 ℃ (room temperatures) to 100 ℃, then under 100 ℃, be incubated 2 hours.Heating and condition of cure are controlled accurately, have guaranteed that later stage particle, fiber double base reinforced composite itself can not collapse the problems such as piece, scarce material;
(7) when particle step (6) obtained, fiber double base reinforced composite mould 2 naturally cool to not higher than 55 ℃, vacuum bag is removed, working face at particle, fiber double base reinforced composite mould 2 forms the solid separation layer, and particle, fiber double base reinforced composite mould 2 complete the demoulding.
Utilize above-mentioned seven steps can complete fast and effectively the demoulding of particle, fiber double base reinforced composite mould 2, particle, fiber double base reinforced composite itself can be not destroyed.
The present embodiment provides the release method of a kind of particle, fiber double base reinforced composite, comprises the following steps:
(1) dip with clean hairbrush the working face that industrial alcohol cleans particle, fiber double base reinforced composite mould 2, until then the working face of the mould 2 of particle, fiber double base reinforced composite dries at normal temperatures without visible pollution, dust etc.;
(2) E-51 epoxy resin, dibutyl phthalate (DBP) and triethylene tetramine mixed and stir, forming epoxy resin composition, the mass percent between epoxy resin, dibutyl phthalate (DBP) and triethylene tetramine is 100:5:15;
(3) ba phenolic resin mixed and stirs with the epoxy resin composition that step (2) obtains, forming adhesive, the mass percent between ba phenolic resin and epoxy resin composition is 1:1;
(4) the polytetrafluoroethylene (PTFE) release cloth 1 that will cut size is laid on clean Polypropylence Sheet, presses 100g/m
2the adhesive that step (3) obtained with hairbrush of ratio evenly be coated in the surface of polytetrafluoroethylene (PTFE) release cloth 1;
(5) the polytetrafluoroethylene (PTFE) release cloth 1 step (4) obtained pastes the working face of particle, fiber double base reinforced composite mould 2, must bubble between the two is emptying; Finally with vacuum bag, be fixed, after vacuum bag is fixed, vacuumized, vacuum bag and particle, fiber double base reinforced composite mould 2 are fitted fully;
(6) particle step (5) obtained, fiber double base reinforced composite mould 2 are heated and are solidified in baking oven, and heating and condition of cure are: heat up 2 hours from 30 ℃ (room temperatures) to 100 ℃, then under 100 ℃, be incubated 2 hours;
(7) when particle step (6) obtained, fiber double base reinforced composite mould 2 naturally cool to not higher than 60 ℃, vacuum bag is removed, working face at particle, fiber double base reinforced composite mould 2 forms the solid separation layer, and particle, fiber double base reinforced composite mould 2 complete the demoulding.
Embodiment 3
The present embodiment provides the release method of a kind of particle, fiber double base reinforced composite, comprises the following steps:
(1) dip with clean hairbrush the working face that industrial alcohol cleans particle, fiber double base reinforced composite mould 2, until then the working face of the mould 2 of particle, fiber double base reinforced composite dries at normal temperatures without visible pollution, dust etc.;
(2) E-51 epoxy resin, dibutyl phthalate (DBP) and triethylene tetramine mixed and stir, forming epoxy resin composition, the mass percent between epoxy resin, dibutyl phthalate (DBP) and triethylene tetramine is 100:5:14;
(3) ba phenolic resin mixed and stirs with the epoxy resin composition that step (2) obtains, forming adhesive, the mass percent between ba phenolic resin and epoxy resin composition is 1:1;
(4) the polytetrafluoroethylene (PTFE) release cloth 1 that will cut size is laid on clean Polypropylence Sheet, presses 100g/m
2the adhesive that step (3) obtained with hairbrush of ratio evenly be coated in the surface of polytetrafluoroethylene (PTFE) release cloth 1;
(5) the polytetrafluoroethylene (PTFE) release cloth 1 step (4) obtained pastes the working face of particle, fiber double base reinforced composite mould 2, must bubble between the two is emptying; Finally with vacuum bag, be fixed, after vacuum bag is fixed, vacuumized, vacuum bag and particle, fiber double base reinforced composite mould 2 are fitted fully;
(6) particle step (5) obtained, fiber double base reinforced composite mould 2 are heated and are solidified in baking oven, and heating and condition of cure are: heat up 2 hours from 25 ℃ (room temperatures) to 100 ℃, then under 100 ℃, be incubated 2 hours;
(7) when particle step (6) obtained, fiber double base reinforced composite mould 2 naturally cool to not higher than 55 ℃, vacuum bag is removed, working face at particle, fiber double base reinforced composite mould 2 forms the solid separation layer, and particle, fiber double base reinforced composite mould 2 complete the demoulding.
Method step of the present invention is simple, has solved existing releasing agent and can not solve the problem that particle, fiber double base reinforced composite can not the demouldings from its mould.The method can not destroyed particle, fiber double base reinforced composite itself simultaneously, collapses the defects such as piece, scarce material in the time of can not the demoulding occurring, and guarantees that this particle, fiber double base reinforced composite can be used.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (7)
1. the release method of a particle, fiber double base reinforced composite, is characterized in that, comprises the following steps:
(1) particle, fiber double base reinforced composite mould are cleaned to described with industrial alcohol, then dried at normal temperatures;
(2) epoxy resin, dibutyl phthalate (DBP) and triethylene tetramine mixed and stir, forming epoxy resin composition, the mass percent between described epoxy resin, dibutyl phthalate (DBP) and triethylene tetramine is 100:5:12～15;
(3) ba phenolic resin mixed and stirs with the epoxy resin composition that step (2) obtains, forming adhesive, the mass percent between described ba phenolic resin and described epoxy resin composition is 1:1;
(4) adhesive step (3) obtained evenly is coated in the surface of polytetrafluoroethylene (PTFE) release cloth;
(5) polytetrafluoroethylene (PTFE) release cloth step (4) obtained pastes the working face of described particle, fiber double base reinforced composite mould, with vacuum bag, is fixed;
(6) particle step (5) obtained, fiber double base reinforced composite mould are heated and are solidified, and described heating and condition of cure are: heat up 2 hours from room temperature to 100 ℃, then under 100 ℃, be incubated 2 hours;
(7) when particle step (6) obtained, fiber double base reinforced composite mould naturally cool to not higher than 30 ℃ of room temperatures, vacuum bag is removed, working face at particle, fiber double base reinforced composite mould forms the solid separation layer, and particle, fiber double base reinforced composite mould complete the demoulding.
2. the release method of particle according to claim 1, fiber double base reinforced composite, it is characterized in that, in described step (1), dip with clean hairbrush the working face that industrial alcohol cleans particle, fiber double base reinforced composite mould, until the working face of particle, fiber double base reinforced composite mould is without visible pollution, dust.
3. the release method of particle according to claim 1, fiber double base reinforced composite, is characterized in that, the epoxy resin in described step (2) is E-51 epoxy resin.
4. the release method of particle according to claim 1, fiber double base reinforced composite, is characterized in that, in described step (4), the polytetrafluoroethylene (PTFE) release cloth that cuts size is laid on clean Polypropylence Sheet, presses 100g/m
2ratio with hairbrush, described adhesive evenly is coated in to the surface of described polytetrafluoroethylene (PTFE) release cloth.
5. the release method of particle according to claim 1, fiber double base reinforced composite, it is characterized in that, in described step (5), described polytetrafluoroethylene (PTFE) release cloth is pasted to the working face of described particle, fiber double base reinforced composite mould, must bubble between the two is emptying.
6. the release method of particle according to claim 1, fiber double base reinforced composite, it is characterized in that, in described step (5), after being fixed with vacuum bag, vacuumized, described vacuum bag and described particle, fiber double base reinforced composite mould are fitted fully.
7. the release method of particle according to claim 1, fiber double base reinforced composite, is characterized in that, in described step (6), described heating is carried out in baking oven.
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2013
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Patent Citations (10)
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| US2958905A (en) * | 1959-02-05 | 1960-11-08 | Dow Chemical Co | Method of fabricating expandable thermoplastic resinous material |
| JPH01261251A (en) * | 1988-04-12 | 1989-10-18 | Koransha Co Ltd | Forming of powder |
| CN1061557A (en) * | 1991-09-18 | 1992-06-03 | 泸州长江化工厂 | A kind of concrete parting agent and manufacture method |
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