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Modified organic silicon sealant and application thereof

A sealant and silicone technology, which is applied in the direction of adhesives, polyether adhesives, non-polymer adhesive additives, etc., can solve low production efficiency, large human error, initial adhesion of silane alkoxy polyether Low force and other problems, to achieve the effect of improving production efficiency, excellent adhesion, and good extrusion

Active Publication Date: 2021-12-28
江苏矽时代材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional touch screen bonding process requires more labor, has low efficiency, and has large human operation errors, making it difficult to realize automation and mechanization. How to effectively improve production efficiency requires an urgent need to find a solution
Conventional silicone sealants contain relatively high content of low molecular weight (D3-D10), and when applied to optical components such as touch screens, volatilization of low molecular weight will easily cause pollution and failure in the later stage
Ordinary silane-terminated alkoxy polyether has low initial tack and low production efficiency

Method used

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  • Modified organic silicon sealant and application thereof
  • Modified organic silicon sealant and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] This embodiment provides a modified silicone sealant for bonding touch screens, which consists of the following components in parts by weight: 60 parts of acrylic-modified siloxy polyether, 40 parts of plasticizer, 10 parts of thixotropic agent, 150 parts of filler, 1 part of water remover, 1 part of adhesion promoter, 0.4 part of catalyst.

[0026] In this embodiment, the viscosity of the acrylic acid-modified siloxy polyether is 10000cPs; the plasticizer is epoxy soybean oil; the thixotropic agent is montmorillonite; the filler is light calcium carbonate; Ethoxysilane; adhesion promoter is γ-(2,3-glycidoxy)propyltrimethoxysilane; catalyst is stannous octoate.

Embodiment 2

[0028] This embodiment provides a modified silicone sealant for bonding touch screens, which consists of the following components in parts by weight: 60 parts of acrylic-modified siloxy polyether, 40 parts of plasticizer, 8 parts of thixotropic agent, 180 parts of filler, 2 parts of water remover, 2 parts of adhesion promoter, 0.4 part of catalyst.

[0029] In this embodiment, the viscosity of the acrylic modified terminal siloxy polyether is 20000cPs; the plasticizer is tributyl citrate; the thixotropic agent is polyamide wax; the filler is silica powder; oxysilane; the adhesion promoter is γ-methacryloxypropyltrimethoxysilane; the catalyst is dioctyltin dilaurate.

Embodiment 3

[0031] This embodiment provides a modified silicone sealant for bonding touch screens, which consists of the following components in parts by weight: 60 parts of acrylic-modified siloxy polyether, 40 parts of plasticizer, 8 parts of thixotropic agent, 180 parts of filler, 2 parts of water remover, 2 parts of adhesion promoter, 0.4 part of catalyst.

[0032] In this embodiment, the viscosity of the acrylic modified terminal siloxy polyether is 20000cPs; the plasticizer is tributyl citrate; the thixotropic agent is polyamide wax; the filler is silica powder; oxysilane; the adhesion promoter is γ-aminopropyltriethoxysilane; the catalyst is dioctyltin dilaurate.

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Abstract

The invention discloses a modified organic silicon sealant as well as a preparation method and application thereof, and belongs to the technical field of sealing materials. The sealant comprises the following components in parts by weight: 50-100 parts of acrylic acid modified siloxy-terminated polyether, 10-50 parts of a plasticizer, 2-10 parts of a thixotropic agent, 20-200 parts of filler, 0.5-3 parts of a water removal agent, 1-4 parts of an adhesion promoter and 0.1-0.5 part of a catalyst. The modified organic silicon sealant can be used as a sealant for bonding a touch screen and a frame shell, replaces a traditional touch screen bonding double-sided adhesive tape, has excellent sealing performance and high initial adhesion, can improve bonding precision and production efficiency, and realizes automation and mechanization of a production line.

Description

technical field [0001] The invention relates to a modified silicone sealant and its application, belonging to the technical field of sealing materials. Background technique [0002] With the rapid development of technology in the electronic communication industry, touch screens are increasingly favored by consumers because of their beautiful appearance, convenient operation, visualization, and intelligence. In the traditional touch screen manufacturing process, double-sided tape is used for pressure bonding to the frame shell of the mobile phone (or tablet, etc.). The current pressure bonding production process requires manual tearing of the double-sided tape. And place the double-sided tape in the positioning groove consistent with the shape of the mobile phone, then attach the touch screen and the frame housing together, and then press and fix it. [0003] The traditional touch screen bonding process requires more labor, has low efficiency, and has large human operation e...

Claims

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Application Information

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IPC IPC(8): C09J171/00C09J11/04C09J11/06
CPCC09J171/00C09J11/04C09J11/06C08K3/36C08K5/544
Inventor 龙李华柯明新何亚宗
Owner 江苏矽时代材料科技有限公司