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Preparation method for thermosetting composite

A composite material and thermosetting technology, applied in the field of preparation of thermosetting composite materials, can solve the problems of poor surface quality of composite materials, easy generation of bubbles in the molding and curing process, etc., and achieve the effect of enhanced crack resistance, high strength and reduced bubbles

Inactive Publication Date: 2016-01-06
CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0002] With the development of society, thermosetting composite materials are used in the fields of automobiles, household appliances and electrical fields; at present, during the molding and curing process of thermosetting composite materials, air bubbles are easily generated during the molding and curing process due to easy contact with the outside air. Too many air bubbles can easily lead to poor surface quality of composite materials

Method used

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  • Preparation method for thermosetting composite

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The ratio of thermosetting epoxy resin: curing agent: accelerator: defoamer: filler = 100:3:3:1:5 (weight ratio), fully stir the above components at 35°C to obtain the resin glue liquid. Wherein the accelerator selected is triethanolamine, the defoamer is silicone oil, and the filler is aluminum hydroxide.

[0024] The three substances of water, sodium silicate and cork powder are fully stirred evenly at 90°C;

[0025] The glass fiber cloth is pretreated by drying at 90°C for 5 minutes;

[0026] Coat the mold release agent of above-mentioned gained on mold, form the gel coat layer after brushing the above-mentioned resin glue solution of above-mentioned gain again after brushing the resin glue solution of above-mentioned gain for the first time on the mold release agent, and in place After laying the glass fiber cloth obtained above on the gel coat layer and pressing it down with a pressure roller, pour unsaturated polyester resin on the surface of the glass fiber clo...

Embodiment 2

[0028] The ratio of thermosetting epoxy resin: curing agent: accelerator: defoamer: filler = 100:10:5:3:40 (weight ratio), fully stir the above components at 35°C to obtain the resin glue liquid. Wherein the accelerator selected is DMP-30, the defoamer is vegetable oil, and the filler is pigment.

[0029] Water, sodium silicate, and cork powder are fully stirred at 100°C;

[0030] The glass fiber cloth is pretreated by drying at 180°C for 3 minutes;

[0031] Coat the mold release agent of above-mentioned gained on mold, form the gel coat layer after brushing the above-mentioned resin glue solution of above-mentioned gain again after brushing the resin glue solution of above-mentioned gain for the first time on the mold release agent, and in place After laying the glass fiber cloth obtained above on the gel coat layer and pressing it down with a pressure roller, pour unsaturated polyester resin on the surface of the glass fiber cloth to form a surface layer, and cover the sur...

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Abstract

The invention relates to the technical field of a thermosetting composite, in particular to a preparation method for the thermosetting composite. The preparation method comprises the following steps: preparing a resin glue solution, an reinforcing material and a release agent; coating a mould with the obtained release agent; brushing the obtained resin glue solution on the release agent twice to form a glue coating layer, as well as laying the obtained reinforcing material on the glue coating layer, carrying out compression with a press roll, and pouring unsaturated polyester resin onto the surface of the reinforcing material to form a surface layer; coating the surface of the surface layer with cellophane, carrying out hot-pressure moulding, and then carrying out demoulding.

Description

technical field [0001] The invention relates to the technical field of thermosetting composite materials, in particular to a preparation method of thermosetting composite materials. Background technique [0002] With the development of society, thermosetting composite materials are used in the fields of automobiles, household appliances and electrical fields; at present, during the molding and curing process of thermosetting composite materials, air bubbles are easily generated during the molding and curing process due to easy contact with the outside air. Too many air bubbles can easily lead to poor surface quality of composite materials. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing a thermosetting composite material. [0004] In order to achieve the above-mentioned purpose of the invention, the technical solution of the present invention is: a method for preparing a thermosetting composite material: compris...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L83/04C08K5/17C08K3/22C08K7/14C08J5/04B29C70/34
Inventor 季小强刘时海何梦瑶袁洁静
Owner CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH
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