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Adhesive polyolefin accelerator for addition type silicone rubber

A silicone rubber, addition molding technology, applied in the field of adhesion promoters, can solve problems such as difficult adhesion, low surface tension, and reduced production efficiency, and achieve the effect of solving adhesion problems, good adhesion effect, and cheap raw materials

Active Publication Date: 2019-05-03
浙江凌志新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no polar groups in polyolefin molecules, and the surface tension is small, making it difficult to bond
The primer can achieve good adhesion to polyolefin, and there are many mature products at present, but a production process is added in the implementation process, which greatly reduces the production efficiency

Method used

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  • Adhesive polyolefin accelerator for addition type silicone rubber

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Comparison scheme
Effect test

Embodiment approach

[0020] An adhesion polyolefin accelerator for addition molding silicone rubber, comprising two components: silane peroxide A and adhesion promoter B.

[0021] The general structural formula of silane peroxide A is R 1 m R 2 n Si(OOR 3 ) 4-m-n , Where: m, n is an integer from 0 to 3 and m+n1 , R 2 Each independently represents a substituted or unsubstituted monovalent hydrocarbon group with 1 to 5 carbon atoms, vinyl group, phenyl group, R 3 Independently represents an unsubstituted monovalent hydrocarbon group with 1 to 5 carbon atoms.

[0022] The specific preparation method of the tackifier B is: adding 660-666 parts by weight of aminopropyltriethoxysilane, 680-688 parts by weight of allyl glycidyl ether and 620-628 parts by weight of ethyl orthosilicate into a container In the process, slowly increase the temperature to 95-105°C to react for 2-4 hours, then turn on the decompression device, control the pressure to 0.1-0.15kPa, slowly increase the temperature to 135-175°C, evapor...

Embodiment 1

[0024] An adhesion polyolefin accelerator for addition molding silicone rubber, comprising two components: silane peroxide A and adhesion promoter B. Silane peroxide A is CH 2 =CHSi(OOC(CH 3 ) 3 ) 3 .

[0025] The specific preparation method of tackifier B is as follows: add 660 parts by weight of aminopropyltriethoxysilane, 680 parts by weight of allyl glycidyl ether and 620 parts by weight of ethyl orthosilicate into a container, and raise the temperature at 1°C / min Slowly increase the temperature to 95℃ and react for 4h, then turn on the decompression device, control the pressure to 0.1kPa, slowly increase the temperature to 135℃ at a heating rate of 1℃ / min, distill off low-boiling substances and unreacted components, cool down, and close the decompression device , To obtain thickener B (light yellow transparent liquid).

Embodiment 2

[0027] An adhesion polyolefin accelerator for addition molding silicone rubber, comprising two components: silane peroxide A and adhesion promoter B. Silane peroxide A is CH 3 CH 2 (CH 3 )Si(OOC(CH 3 ) 3 ) 2 .

[0028] The specific preparation method of Tackifier B is: adding 666 parts by weight of aminopropyltriethoxysilane, 688 parts by weight of allyl glycidyl ether and 628 parts by weight of ethyl orthosilicate into a container, and heating at 1°C / min Slowly increase the temperature to 105℃ and react for 2h, then turn on the decompression device, control the pressure to 0.15kPa, slowly increase the temperature to 175℃ at a heating rate of 1℃ / min, distill off low-boiling substances and unreacted components, cool down, and close the decompression device , To obtain thickener B (light yellow transparent liquid).

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Abstract

The invention discloses a polyolefin bonding promoter for addition-type silicone rubber. The polyolefin bonding promoter comprises silane peroxide A and a tackifier B. According to the invention, raw materials are cheap and easily available; a preparation process is simple; and the polyolefin bonding promoter is convenient to use and good in bonding effect and can be directly doped into the addition-type silicone rubber so as to overcome problems in bonding between the addition-type silicone rubber and polyolefin.

Description

Technical field [0001] The invention relates to an adhesion promoter, in particular to an adhesion polyolefin promoter for addition molding silicone rubber. Background technique [0002] Addition-molded silicone rubber has attracted wide attention because of its excellent properties. At present, many addition-molded silicone rubber products have been developed. However, poor adhesion limits the application of addition-molded silicone rubber. In order to solve the adhesion problem of addition-molded silicone rubber, many domestic and foreign researchers have developed a variety of adhesion promoters for addition-molded silicone rubber to achieve the adhesion of addition-molded silicone rubber to various materials. However, polyolefin materials are due to their surface The energy is relatively low, and it is difficult for silicone rubber to bond with it effectively. At present, the main ways to solve this problem are: 1. Surface treatment of polyolefin; 2. Apply a layer of primer ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C08L83/08C08K5/5425C08K5/5419C08G77/38C08G77/26C08J7/04
CPCC08G77/26C08G77/38C08J7/0427C08J2323/00C08J2483/04C08K5/5419C08K5/5425C08L83/04C08L2205/02C08L83/08
Inventor 陈世龙程大海张春晖柳时允张宝华
Owner 浙江凌志新能源科技有限公司