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Composite resin plate, preparation method and application of composite resin plate in preparation of EPS foam-resin composite mold

A composite resin and mold technology, used in the field of preparation, composite resin board, and EPS foam-resin composite mold preparation, can solve the problems of insufficient tensile strength and flexural strength, so as to solve the problem of insufficient tensile strength and flexural strength, and improve the resistance to Tensile and flexural strength, effect of increasing adhesion

Pending Publication Date: 2020-12-25
广西长城机械股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a composite resin board, a preparation method and its use in preparing EPS foam-resin composite molds, so as to solve the problems of insufficient tensile strength and bending strength of the resin board prepared in the prior art

Method used

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  • Composite resin plate, preparation method and application of composite resin plate in preparation of EPS foam-resin composite mold
  • Composite resin plate, preparation method and application of composite resin plate in preparation of EPS foam-resin composite mold
  • Composite resin plate, preparation method and application of composite resin plate in preparation of EPS foam-resin composite mold

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preparation example Construction

[0034] The preparation method of the composite reinforcing agent comprises the following steps: in parts by weight, adding 6-10 parts of alumina fiber and fatty alcohol polyoxyethylene ether sodium sulfate to 25-36 parts of dodecanedioic acid copolyester 0.5-1 part, and then stirred for 1.5-2.5 hours at a microwave power of 200-300W, a temperature of 232-250°C, and a rotation speed of 200-400r / min to obtain a composite reinforcing agent;

[0035] Described whipping agent is azodicarbonamide;

[0036] The foam regulator is an acrylate foam regulator;

[0037] The preparation method of described EPS foam, comprises the following steps:

[0038] 1-1) Send EPS particles and PTFE into a high-speed mixer and mix them thoroughly for 20-30 minutes;

[0039] 1-2) Preheat the mixed particles to 135-145°C, add dispersant, plasticizer, composite reinforcing agent, foaming agent, and foaming regulator and mix for 1.5-2.5 hours;

[0040] 1-3) The above-mentioned mixture is sent into the ...

Embodiment 1

[0062] A method for making an EPS foam-resin composite mold, comprising the following steps:

[0063] (1) According to the layered size of the EPS foam mold, it is cut by flat plate cutting;

[0064] The EPS foam, in parts by weight, includes the following raw materials: 96 parts of EPS particles, 24 parts of polytetrafluoroethylene, 1 part of dispersant, 2 parts of plasticizer, 1.6 parts of composite reinforcing agent, 1 part of foaming agent, 0.4 part of foam regulator;

[0065] The dispersant is dispersant 5040;

[0066] The plasticizer is an aliphatic dibasic acid ester plasticizer;

[0067] The preparation method of the composite reinforcing agent comprises the following steps: in parts by weight, adding 6 parts of alumina fibers and 0.6 parts of fatty alcohol polyoxyethylene ether sodium sulfate to 28 parts of dodecanedioic acid copolyester, and then Stir at a microwave power of 200W, a temperature of 235°C, and a rotation speed of 200r / min for 2.3h to prepare a compo...

Embodiment 2

[0094] A method for making an EPS foam-resin composite mold, comprising the following steps:

[0095] (1) According to the layered size of the EPS foam mold, it is cut by flat plate cutting;

[0096] The EPS foam, in parts by weight, includes the following raw materials: 106 parts of EPS particles, 28 parts of polytetrafluoroethylene, 1.6 parts of dispersant, 3 parts of plasticizer, 2 parts of composite reinforcing agent, 1.3 parts of foaming agent, 0.5 part of foam regulator;

[0097] The dispersant is dispersant 5040;

[0098] The plasticizer is an aliphatic dibasic acid ester plasticizer;

[0099] The preparation method of the composite reinforcing agent comprises the following steps: in parts by weight, adding 8 parts of alumina fiber and 0.9 part of fatty alcohol polyoxyethylene ether sodium sulfate to 30 parts of dodecanedioic acid copolyester, and then Stir for 1.8h at a microwave power of 300W, a temperature of 246°C, and a rotation speed of 400r / min to prepare a co...

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Abstract

The invention discloses a composite resin plate, a preparation method and application of the composite resin plate in preparation of an EPS (expandable polystyrene) foam-resin composite mold, and thecomposite resin plate comprises the following raw materials: bisphenol A epoxy resin, inorganic powder, dicyclohexyl peroxydicarbonate, methacrylamide, m-Isopropenyl-2, 2-Dimethylbenzoyl isocyanate, 2-ethylhexyl methacrylate and a curing agent; the composite resin plate is prepared through the steps of mixing, microwave vibration treatment, standing, curing, heat preservation and the like. The tensile strength of the prepared composite resin plate reaches 309.7 MPa or above, the bending strength reaches 485.6 MPa or above, and the tensile strength and the bending strength are obviously higherthan those of an existing resin plate; by the adoption of the composite resin plate, rapid drawing can be achieved, the composite resin plate is not disengaged, and a mold is not deformed; an existingresin plate is used, the resin plate slightly falls off, and the mold has little deformation.

Description

technical field [0001] The invention belongs to the technical field of casting and producing wear-resistant castings, and in particular relates to a composite resin board, a preparation method and its application in preparing EPS foam-resin composite moulds. Background technique [0002] Sand casting is a casting method that produces castings in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting. Because the molding materials used in sand casting are cheap and easy to obtain, the casting mold is easy to manufacture, and it can adapt to the single-piece production, batch production and mass production of castings. It has been the basic process in casting production for a long time. [0003] At present, the mold materials used for casting and producing wear-resistant castings such as high manganese steel mainly include cast iron and wood. Metal molds and wooden molds (fir) have a long service life, castings, smooth product surfaces, a...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L51/08C08K3/26C08F283/10C08F220/54C08F220/18C08F212/14B22C7/02
CPCC08L63/00C08F283/10B22C7/023C08K2003/265C08L51/08C08K3/26C08F220/54C08F220/1808C08F212/26
Inventor 周正赵四勇廖钊康健田辉
Owner 广西长城机械股份有限公司
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