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Method for preparing demolding agent for roducing epoxy glass fibre reinforced plastic composite material

A technology of epoxy glass fiber reinforced plastics and composite materials, which is applied in the field of preparation of release agents for the manufacture of epoxy glass fiber reinforced plastic composite materials, which can solve the problems of poor product finish, poor finish of parts, and difficulty in uniform application, etc., and achieve simple production equipment and processes , Wide range of molding temperature, easy to apply uniform effect

Inactive Publication Date: 2004-12-15
高金技术产业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, most of the demoulding methods adopted in the manufacture of epoxy FRP composite materials (laminated, molded, and casted products) are the following: (1) black stripping made of asphalt, silicone rubber, paraffin and other materials. Molding agent, this method has poor demoulding effect, and it is easy to leave traces of mold release agent on light-colored products due to uneven application, and because asphalt is used as a component, it will cause environmental pollution when brewing; (2) directly use vacuum silicon Grease and high-temperature lubricating silicone grease are applied on the surface of the mold as a release agent. This method has high raw material prices and is hard paste-like at room temperature. It is not easy to apply evenly, and the finish of the product is poor, which affects the effect of secondary coloring and spraying processing of the product; ( 3) The demoulding method using polypropylene film to isolate the workpiece from the mold, this method is only suitable for the production of simple and regular-shaped parts, and the applicable temperature is less than 160 ° C, and the finish of the parts is poor

Method used

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  • Method for preparing demolding agent for roducing epoxy glass fibre reinforced plastic composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of preparation method of mold release agent for the manufacture of epoxy fiberglass composite material, the silicone grease that is made by lithium saponified polyphenylmethylsiloxane by 5 parts of weight, the methyl vinyl silicone rubber of 10 parts by weight, 20 parts by weight The higher fatty acid salt (sodium lauryl sulfonate) of part weight, 75 parts by weight of 30 parts # The proportioning ratio of microcrystalline paraffin is taken respectively, adopting 70 # gasoline as a solvent;

[0020] Completely dissolve 5 parts of silicone grease with 200 parts of gasoline under heating and reflux as component 1, and completely dissolve 10 parts of silicone rubber with 100 parts of gasoline under heating and reflux as component 2, mix component 1 and component 2 Add 20 parts of higher fatty acid salts and 30 parts of paraffin in the reaction vessel in sequence at 50°C to 120°C, stir under reflux to dissolve each component into a homogeneous phase, and then obtain...

Embodiment 2

[0022] A kind of preparation method of release agent for the manufacture of epoxy fiberglass composite material, by the silicone grease that is made of methyl silicone oil by 20 parts by weight, the phenylvinyl silicone rubber of 60 parts by weight, the higher fatty acid salt of 120 parts by weight (sodium lauryl sulfate), 90 parts by weight of 90 # The proportioning ratio of microcrystalline paraffin is taken respectively, adopting 90 # gasoline as a solvent;

[0023] Completely dissolve 20 parts of silicone grease with 300 parts of gasoline under heating and reflux as component 1, and completely dissolve 60 parts of silicone rubber with 150 parts of gasoline under heating and reflux as component 2, mix component 1 and component 2 In the reaction vessel, add 120 parts of higher fatty acid salt and 90 parts of paraffin successively at 50°C to 120°C, stir under reflux to dissolve each component into a homogeneous phase, and then obtain the epoxy glass fiber reinforced plastic ...

Embodiment 3

[0025] A kind of preparation method of mold release agent for the manufacture of epoxy fiberglass composite material, take respectively the proportioning of 15 parts by weight of silicone grease, 30 parts of weight of silicone rubber, 60 parts of weight of higher fatty acid salt, and 60 parts of weight of paraffin wax amount, using 93 # gasoline as a solvent;

[0026] Completely dissolve 15 parts of silicone grease with 250 parts of gasoline under heating and reflux as component 1, and completely dissolve 30 parts of silicone rubber with 120 parts of gasoline under heating and reflux as component 2, mix component 1 and component 2 In the reaction vessel, add 60 parts of higher fatty acid salt and 60 parts of paraffin successively at 50 ° C ~ 120 ° C, stir under reflux to dissolve each component into a homogeneous phase, and then obtain the epoxy glass fiber reinforced plastic composite material. mold agent.

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Abstract

The demolding agent is prepared with silicone grease 5-20 weight portions, silica rubber 10-60 weight portions, higher fatty acid salt 20-120 weight portions and paraffin 30-90 weight portions and through dissolving in gasoline solvent inside a reaction container, heating at 50-120 deg.c, and reflux stirring to form homogeneous demolding agent solution. The demolding agent may be sued in producing glass fiber reinforced epoxy plastic composite material in electronic industry, plastic industry, rubber industry, etc. and has the features of good demolding effect, no corrosion, no toxicity, high heat resistance and long shelf life.

Description

technical field [0001] The present invention relates to a kind of preparation method of release agent, particularly a kind of preparation method of release agent for the manufacture of epoxy glass-steel composite material, and the obtained product is mainly used in the manufacture of epoxy glass-steel composite material (lamination, molding, casting products) as a release agent. Background technique [0002] In the prior art, most of the demoulding methods adopted in the manufacture of epoxy FRP composite materials (laminated, molded, and casted products) are the following: (1) black stripping made of asphalt, silicone rubber, paraffin and other materials. Molding agent, this method has poor demoulding effect, and it is easy to leave traces of mold release agent on light-colored products due to uneven application, and because asphalt is used as a component, it will cause environmental pollution when brewing; (2) directly use vacuum silicon Grease and high-temperature lubric...

Claims

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Application Information

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IPC IPC(8): B29C33/64
Inventor 刘锋李仕文邵亚婷
Owner 高金技术产业集团有限公司
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