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Preparation method of dealcoholized sealant

A sealant and dealcoholization-type technology, applied in the direction of adhesives, etc., can solve problems affecting product yield and performance, product curing in the reactor, production troubles, etc., to reduce the viscosity peak, improve quality and production efficiency, process simple effect

Active Publication Date: 2020-06-09
广东盛唐新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the dealcoholized silicone one-component sealants currently on the market use hydroxyl-terminated silicones, such as 107 glue (α, ω-dihydroxypolydimethylsiloxane) as raw materials, through hydroxyl-terminated organic silicon The silicone sealant prepared from silicon is highly active, and there will be a viscosity peak in the process of producing dealcoholized silicone sealant, which will affect the yield and performance of the product, and at the same time bring trouble to production, and may even cause product failure. Risks of curing in the reactor

Method used

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  • Preparation method of dealcoholized sealant
  • Preparation method of dealcoholized sealant

Examples

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Embodiment 1

[0027] A preparation method of dealcoholized sealant, comprising the following steps:

[0028] (1) Mix 10g of diethylaminomethyltriethoxysilane and 10g of dichloromethyltriethoxysilane evenly, and react at 25°C for 50 minutes to obtain a pretreated product;

[0029] (2) 20 g of the pretreated product and 100 g of 107 glue with a viscosity of 1000 cps (25° C., 50% RH) were mixed, evacuated to a vacuum degree of 0.1 MPa, and reacted for 1 hour to obtain a dealcoholized sealant.

Embodiment 2

[0031] A preparation method of dealcoholized sealant, comprising the following steps:

[0032] (1) Mix 10g of diethylaminomethyltriethoxysilane and 5g of dichloromethyltriethoxysilane evenly, and react at 25°C for 50 minutes to obtain a pretreated product;

[0033] (2) 15g of the pretreated product and 100g of 107 glue with a viscosity of 1000cps (25°C, 50%RH) were mixed, evacuated to a vacuum degree of 0.1MPa, and reacted for 2 hours to obtain a dealcoholized sealant.

Embodiment 3

[0035] A preparation method of dealcoholized sealant, comprising the following steps:

[0036] (1) Mix 10g of diethylaminomethyltriethoxysilane and 5g of dichloromethyltriethoxysilane evenly, and react at 80°C for 50 minutes to obtain a pretreated product;

[0037] (2) 15g of the pretreated product and 100g of 107 glue with a viscosity of 1000cps (25°C, 50%RH) were mixed, evacuated to a vacuum degree of 0.1MPa, and reacted for 1 hour to obtain a dealcoholized sealant.

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Abstract

The invention particularly relates to a preparation method of a dealcoholized sealant. The invention relates to the preparation method of the dealcoholized sealant, which comprises the following steps: (1) uniformly mixing diethylaminomethyl triethoxysilane and an alpha silane coupling agent, and reacting to obtain a pretreated product; and (2) mixing the pretreated product and a base material, vacuumizing and reacting to obtain the dealcoholized sealant. According to the preparation method disclosed by the invention, no viscosity peak is generated or only slight viscosity peak is generated inthe preparation process of the dealcoholized sealant, the quality and production efficiency of the product can be effectively improved, and the preparation method is simple in process, convenient andhigh in efficiency and has a prospect in preparation and production of the sealant.

Description

technical field [0001] The invention particularly relates to a preparation method of dealcoholized sealant. Background technique [0002] The types of commonly used silicone sealants mainly include deacidification type, dealcoholization type and deketoxime type, among which dealcoholization type sealants are neutral, clean, non-toxic, non-corrosive, low cost and It has the advantages of good bonding performance for glass and metal and other materials. [0003] In recent years, with the rapid development of the electrical and electronic industry, the dealcoholized silicone one-component sealant (RTV-1) has attracted the attention of the industry and the favor of researchers because of its above-mentioned performance advantages. However, most of the dealcoholized silicone one-component sealants currently on the market use hydroxyl-terminated silicones, such as 107 glue (α, ω-dihydroxypolydimethylsiloxane) as raw materials, through hydroxyl-terminated organic silicon The sili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/08C08G77/26C08G77/24C08G77/06
CPCC08G77/06C08G77/24C08G77/26C09J183/08
Inventor 唐双武崔少伟
Owner 广东盛唐新材料技术有限公司