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Release agent and application thereof

A technology of release agent and emulsifier, which is applied in the direction of additives, base materials, petroleum industry, etc., and can solve the problems of large differences in product gloss and complicated construction

Inactive Publication Date: 2010-11-24
HENKELCHINAINVESTMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of complex construction and large difference in product gloss of the existing release agent with matte effect, and to provide a kind of simple construction, excellent mold release and matte effect, which can Realize semi-permanent mold release, and after multiple demoulding, the gloss of the product can remain basically constant, without affecting product performance, and a release agent with high storage stability

Method used

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  • Release agent and application thereof
  • Release agent and application thereof
  • Release agent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] At room temperature, add the ingredients in Table 1 into the high-speed dispersion tank, and stir at a speed of 1500 rpm for 20 minutes to make them evenly mixed. Then, at 1500 rpm, 31.6 g of deionized water was added dropwise at a constant speed within 30 minutes; after the dripping, continued stirring at 200 rpm for 30 minutes to obtain the final product. The release agent has a solid content of 50%, can be stored at room temperature for 1 month, and can be diluted with water when used. The release agent prepared in Example 1 is sprayed on the metal mold, which can be cured to form a film at 160°C for 10 minutes, and the EPDM rubber is released by using this release agent to obtain a rubber product with a glossiness of 0.7°. It can be demolded more than 20 times in one spraying, and the rubber gloss of each mold is constant. Demoulding thermoplastic polyurethane materials, products with a gloss of 2.7° can be obtained; demoulding polybenzoxazine materials, products w...

Embodiment 2

[0103]At room temperature, add the ingredients in Table 2 into the high-speed dispersion tank, and stir at a speed of 1500 rpm for 20 minutes to make them evenly mixed. Then, at 1500 rpm, 31.6 g of deionized water was added dropwise at a constant speed within 30 minutes; after the dripping, continued stirring at 200 rpm for 30 minutes to obtain the final product. The release agent has a solid content of 55%, can be stored at room temperature for 2 months, and can be diluted with water when used. The release agent prepared in Example 2 is sprayed on the metal mold, and it can be cured to form a film at 160 ° C for 10 minutes. Using this release agent to release the EPDM rubber, a rubber product with a gloss of 1.0° can be obtained. It can be demolded more than 20 times in one spraying, and the rubber gloss of each mold is constant.

[0104] Table 2

[0105]

[0106]

Embodiment 3

[0108] At room temperature, add the ingredients in Table 3 into the high-speed dispersion tank, and stir at a speed of 1500 rpm for 20 minutes to make them evenly mixed. Then, at 1500 rpm, add 30.4 g of deionized water dropwise at a constant speed within 30 minutes; after the dripping, continue stirring at 200 rpm for 30 minutes to obtain the final product. The release agent has a solid content of 50%, can be stored at room temperature for 1 month, and can be diluted with water when used. The release agent prepared in Example 3 is sprayed on the metal mold, which can be cured to form a film at 160° C. for 10 minutes. The release agent is used to release the EPDM rubber to obtain a rubber product with a glossiness of 2.7°. It can be demolded more than 20 times in one spraying, and the rubber gloss of each mold is constant.

[0109] table 3

[0110]

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Abstract

The invention discloses a release agent. The release agent comprises polysiloxane compound of which the molecule has more than three silicon-hydrogen (Si-H) bonds, semigloss particles, an emulsifying agent and water. The invention also provides the application of the release agent in the preparation of semigloss type rubber products, semigloss type plastic products or semigloss type composite material products. The release agent of the invention has simple construction, high release property and a good semigloss effect, and can form a harder film after being cured, so that the semigloss particles are fixed on the film without being transferred to the molded products, and semi-permanent demoulding is realized; the obtained products after multiple demoulding still have basically constant glossiness and high storage stability without being influenced on the product property. The release agent of the invention is almost suitable for all moulds, particularly has higher caking property with metal moulds and has a wide application range.

Description

technical field [0001] The invention relates to a release agent and its application. Background technique [0002] With the improvement of people's awareness of light pollution, matt products are becoming more and more popular. Usually, for products with matt requirements, such as rubber, plastics, composite materials, etc., a method commonly used in the existing technology is to use a mold to achieve matte, that is, the mold is made into an uneven surface, and then molded. Patent JP2003231150 (A) introduces a method of injecting molten resin into a mold with uneven surface, cooling and solidifying to prepare matt resin. Patent US4954297 (A) has introduced a kind of heating and pressing molding resin on the rough cast surface, prepares the matte resin with fine groove. However, the increased surface area of ​​the uneven mold is not conducive to the coating of the release agent and the cleaning of the mold, resulting in difficulty in demoulding the product and destroying th...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10M107/30C10M161/00B29C33/64C10N40/36
CPCC08G77/12B29C33/64
Inventor 徐健岩张宜荣张勇邢文涛李志明陆征
Owner HENKELCHINAINVESTMENT
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