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Silicone adhesion-promoting material and its preparation method and application

A silicone and reaction technology, applied in the direction of adhesives, polymer adhesive additives, adhesive additives, etc., can solve the problems of pressure-sensitive adhesive peeling off, poor bonding performance of the substrate, and strong odor, so as to improve the bonding performance , improve the effect of thickening, and the effect of simple preparation method

Active Publication Date: 2021-10-26
SHENZHEN ANPIN SILICONE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the bonding effect of organic silica gel itself to most substrates is not ideal, if no tackifier is added to the silica gel, which can improve the bonding performance with the substrate, it will seriously affect the application performance, including the silicone pressure-sensitive adhesive on the substrate. The bonding performance of the material is poor, and the adhesion to the substrate is far from meeting the requirements of use. During the application process, the pressure-sensitive adhesive is easy to fall off from the adhered substrate, especially in a humid environment.
Existing solutions include: 1. Prime the substrate, but this method is cumbersome and not suitable for most application scenarios; 2. Add tackifiers, but most tackifiers on the market can only be used in certain applications. The formula is used, and the odor is large, the versatility is poor, the storage stability is not good, and the bonding performance is not good. In the preparation method of the tackifier of the patent CN108795319A, deionized water is added to obtain a silicone resin, but its storage stability is poor. , resulting in limited application and poor adhesion promotion

Method used

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  • Silicone adhesion-promoting material and its preparation method and application
  • Silicone adhesion-promoting material and its preparation method and application
  • Silicone adhesion-promoting material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Under the conditions of constant temperature of 25°C and nitrogen protection, 94g of dimethyl monochlorosilane, 208g of tetrahydrofuran, 115g of allyl glycidyl ether and 0.83g of platinum catalyst (5000ppm Castel catalyst, purchased from Dongguan Huayue Keming, product Model MT-PT105) was added into the flask and kept for 12 hours. After the reaction, 0.38g of ferric chloride was added, 60g of dimethylvinylmethoxysilane, 115g of 3-methacryloyloxypropyl di Methylethoxysilane and 0.76g hydroquinone monomethyl ether were heated to 50°C to react for 3 hours, vacuumed to remove the solvent and low molecules, and filtered to obtain a silicone adhesion-promoting material. After testing, its epoxy value was 0.31 mol / 100g.

Embodiment 2

[0052] Under the conditions of constant temperature of 25°C and nitrogen protection, 94g dimethyl monochlorosilane, 65g tetrahydrofuran, 115g allyl glycidyl ether and 0.42g platinum catalyst (5000ppm Castel catalyst, purchased from Dongguan Huayue Keming, product Model MT-PT105) was added into the flask and kept for 12 hours. After the reaction, 0.07g of ferric chloride was added, 82g of dimethylvinylmethoxysilane, 69g of 3-methacryloyloxypropyl di Methylethoxysilane and 0.02g of hydroquinone monomethyl ether were heated to 50°C to react for 4 hours, vacuumed to remove the solvent and low molecules, and filtered to obtain a silicone adhesion-promoting material. After testing, its epoxy value was 0.33 mol / 100g.

Embodiment 3

[0054] Under the conditions of constant temperature of 25°C and nitrogen protection, 94g of dimethyl monochlorosilane, 100g of tetrahydrofuran, 115g of allyl glycidyl ether and 0.6g of platinum catalyst (5000ppm Castel catalyst, purchased from Dongguan Huayue Keming, product Model MT-PT105) was added into the flask and kept for 12 hours. After the reaction, 0.2g of ferric chloride was added, 35g of dimethylvinylmethoxysilane, 161g of 3-methacryloyloxypropyl di Methylethoxysilane and 0.4g of hydroquinone monomethyl ether were heated to 80°C to react for 3 hours, vacuumed to remove the solvent and low molecules, and filtered to obtain a silicone adhesion-promoting material. After testing, its epoxy value was 0.29 mol / 100g.

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Abstract

The invention discloses a silicone viscosifying material and its preparation method and application. The silicone viscosifying material includes low-molecular-weight polysiloxane with a special structure, and the viscosifying effect is improved by adjusting and optimizing the groups of oligomers and storage stability, and the preparation method is simple.

Description

technical field [0001] The invention belongs to the technical field of organosilicon materials, and relates to an organosilicon adhesion-promoting material and a preparation method and application thereof. [0002] technical background [0003] Silicone materials have excellent heat and ultraviolet aging properties, high light transmittance, low internal stress and other advantages, as well as better high and low temperature resistance, vulcanization resistance, and ultraviolet resistance. However, since the bonding effect of organic silica gel itself to most substrates is not ideal, if no tackifier is added to the silica gel, which can improve the bonding performance with the substrate, it will seriously affect the application performance, including the silicone pressure-sensitive adhesive on the substrate. The bonding performance of the material is poor, and the adhesion to the substrate is far from meeting the requirements of use. During the application process, the pressu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J11/08C09J183/07C09J183/04C09J183/05C08G77/20C08G77/14
CPCC08G77/14C08G77/20C08L2205/025C08L2205/035C09J11/08C09J183/04C08L83/04C08L83/06
Inventor 彭派潜吴光飞陈巧站王超游正林
Owner SHENZHEN ANPIN SILICONE MATERIAL