A kind of polysilane tire release agent

A polysilane and release agent technology, which is applied in the field of polysilane tire release agents, can solve the problems of insufficient compatibility between silicone and substrate, poor isolation effect, and low frequency of continuous demoulding, so as to improve the overall surface activity, Enhance adhesion, improve the effect of low surface energy effect

Active Publication Date: 2022-06-21
浙江昂扬新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, as an important auxiliary agent in the production process of rubber tires, the isolation and release agent for rubber tires can improve the appearance and performance of the product. However, the commonly used isolation and release agents mainly include waxes, silicone oils, soaps, etc. They Each has its own characteristics, but there are deficiencies, such as the low frequency of continuous demoulding after one painting
Further analysis concluded that the poor isolation effect was due to insufficient compatibility of the silicone in the film with the substrate

Method used

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  • A kind of polysilane tire release agent
  • A kind of polysilane tire release agent
  • A kind of polysilane tire release agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The polysilane-based tire release agent of the present embodiment includes the mass percentage of the following components:

[0048] Long-chain alkyl-grafted polysilane: 12%; cross-linking agent: 1.0%; emulsifier: 2.0%; stabilizer: 0.7%, and the rest is deionized water; the structural formula of long-chain alkyl-grafted polysilane is as follows: formula I Compound:

[0049]

[0050] In formula I, when R is selected from butyl group, a is selected from an integer of 2-14, b is selected from an integer of 1-4, and c is an integer of 1-5; wherein the cross-linking agent is 1,4-xylylene Thiol, glycerol monostearate as emulsifier, zinc calcium stabilizer as stabilizer, and ingredients of the above-mentioned release agent are prepared according to a total mass percentage of 100%.

[0051] For the preparation method of the above-mentioned release agent, it can be obtained by the following method: the corresponding mass percentage of long-chain alkyl graft polysilane is slo...

Embodiment 2

[0055] The polysilane-based tire release agent of the present embodiment includes the mass percentage of the following components:

[0056] Long-chain alkyl-grafted polysilane: 16%; cross-linking agent: 1.0%; emulsifier: 1.5%; stabilizer: 0.6%, and the rest is deionized water; the structural formula of long-chain alkyl-grafted polysilane is as follows: formula I Compound:

[0057]

[0058] In formula I, R is selected from C 1 -C 4 The straight-chain alkyl group, a is selected from the integers of 2-14, b is selected from the integers of 1-4, c is the integer of the average number of 1-5; the cross-linking agent is 4,4-dimercaptostilbene , the emulsifier adopts fatty alcohol polyoxyethylene ether, the stabilizer adopts polyethylene glycol, and the components of the above-mentioned release agent are prepared according to a total mass percentage of 100%. The specific preparation method of the above-mentioned long-chain alkyl-grafted polysilane can be the same as the corresp...

Embodiment 3

[0061] The polysilane-based tire release agent of the present embodiment includes the mass percentage of the following components:

[0062] Long-chain alkyl-grafted polysilane: 14%; cross-linking agent: 0.8%; emulsifier: 1.0%; stabilizer: 0.4%, and the rest is deionized water; the structural formula of long-chain alkyl-grafted polysilane is as follows: formula I Compound:

[0063]

[0064] In formula I, R is selected from methyl, a is 4, b is 1, and c is 3; the cross-linking agent is 2,2'-thiobis(ethanethiol), the emulsifier is Tween 60, and the stable The agent adopts sodium polyacrylate, and the components of the above-mentioned release agent are prepared according to a total mass percentage of 100%. The specific preparation method of the above-mentioned long-chain alkyl-grafted polysilane can be the same as the corresponding method in Example 1, and will not be repeated here.

[0065] The preparation method of the above-mentioned release agent in this embodiment is the...

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Abstract

The invention relates to a polysilane tire release agent, which belongs to the technical field of release materials. In order to solve the existing problem of poor mold release performance, a polysilane tire release agent is provided, which includes the following components in parts by weight: long-chain alkyl grafted polysilane: 12% to 16%; crosslinking agent : 0.8% ~ 1.0%; emulsifier: 1.0% ~ 2.0%; stabilizer: 0.4% ~ 0.7%, the rest is water. The invention can effectively improve the overall surface activity of the release agent so that it is strictly oriented to the surface of the coating, so that the material can obtain better low surface energy effects, and the polysiloxane side chain is also grafted with an alkyl group that can Enhance the adhesion between the coating and the substrate more effectively.

Description

technical field [0001] The invention relates to a polysilane tire release agent, which belongs to the technical field of mold release materials. Background technique [0002] The molding and vulcanization process of tires generally involves inserting a tire blank into a mold and pressing it against the surface of the mold with a heated mold (bladder or diaphragm), and then vulcanizing it with the help of temperature, which requires a heated film It must be able to slide within the blank and must also be able to ensure separation or demolding of the tire after vulcanization. At present, in order to improve the demoulding ability of the tire, the surface of the mold is usually treated by brushing or spraying or coating a release agent or a release agent, which is equivalent to requiring a filler as a release agent between the bladder or the mold and the tire blank. , to improve the demoulding ability. On the one hand, as an important auxiliary agent in the production process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/64B29L30/00
CPCB29C33/64B29L2030/00
Inventor 舒立金罗大鹏杨世敏
Owner 浙江昂扬新材料科技有限公司
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