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Two-component condensation type silicone adhesive, composition forming same and application thereof

A silicone adhesive, condensation-type technology, applied in the direction of adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problems of fast curing, fast bonding performance, anti-aging performance and lack of elongation

Active Publication Date: 2021-11-23
富乐(苏州)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a two-component condensation type silicone adhesive, its composition and its application, so as to solve the problems of the existing condensation type two-component silicone rubber in fast curing, fast bonding performance, anti-aging, etc. There are still deficiencies in performance and elongation

Method used

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  • Two-component condensation type silicone adhesive, composition forming same and application thereof
  • Two-component condensation type silicone adhesive, composition forming same and application thereof

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preparation example Construction

[0024] In a preferred embodiment, the preparation method of the hydrate of trialkoxysilane a and dialkoxysilane without amino group comprises: adding trialkoxysilane a and dialkoxysilane according to a predetermined ratio Put it into the reaction vessel, fill it with nitrogen for protection, stir evenly, control the temperature of the mixture at 20-30°C, add tin catalyst, stir rapidly, control the temperature of the system at 20-40°C, add deionized water dropwise within 1-1.5h Into the reaction system, the temperature was raised to reflux, kept for 2 hours, and the co-hydrolyzed product was obtained after cooling down. Preferably, the catalyst is used in an amount of 0.2-0.35%, more preferably 0.23%, 0.25%, and 0.3%, as a percentage of the total weight of trialkoxysilane and amino group-free dialkoxysilane.

[0025] Preferably, the amount of deionized water is 7-8%, more preferably 7.2%, 7.5%, 7.7%, based on the percentage of the total weight of trialkoxysilane and dialkoxysil...

Embodiment 1

[0091] (1) Preparation of the second component

[0092] 100 parts of 1000cp methyl silicone oil, 30 parts of fumed silica treated with hexamethyldisilazane, 20 parts of methyltrimethoxysilane, 25 parts of XL-1, 30 parts of P-1, dilauric acid 0.2 parts of dibutyltin, mixed evenly in a planetary stirring tank.

[0093] (2) Preparation of two-component condensation type silicone adhesive

[0094] The above catalytic crosslinking agent (second component) is mixed with the main agent A1 (first component), and mixed evenly according to the weight ratio of catalytic crosslinking agent / main agent of 1:10, and the performance of the two-component silicone rubber is tested. The test data As in Table 1.

Embodiment 2

[0096] (1) Preparation of the second component

[0097] 100 parts of 1000cp methyl silicone oil, 20 parts of fumed silica treated with hexamethyldisilazane, 10 parts of titanium dioxide, 25 parts of methyltriethoxysilane, 25 parts of XL-1, and 25 parts of P-2 25 parts, 0.3 part of dibutyltin dilaurate, and mix uniformly in a planetary stirring tank.

[0098] (2) Preparation of two-component condensation type silicone adhesive

[0099] The above catalytic crosslinking agent (second component) is mixed with the main agent A1 (first component), and mixed evenly according to the weight ratio of catalytic crosslinking agent / main agent of 1:10, and the performance of the two-component silicone rubber is tested. The test data As in Table 1.

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Abstract

The invention provides a two-component condensation type silicone adhesive, a composition forming it and an application thereof. It comprises a first component comprising a polysiloxane having hydroxyl groups bonded to silicon atoms and water, and a second component comprising a first diluent, a first cohydrolyzate, The second co-hydrolyzate and catalyst, wherein the first co-hydrolyzate is the co-hydrolyzate of trialkoxysilane a and dialkoxysilane without amino groups, and the second co-hydrolyzate is aminosilane coupling agent and trioxane Cohydrolysis product of oxysilane b. The two-component condensation type silicone adhesive prepared by using the above composition has the advantages of fast curing speed, good elongation, good bonding performance in a short time, aging resistance and the like.

Description

technical field [0001] The invention relates to the field of silicone, in particular to a two-component condensation silicone adhesive, a composition forming it and an application thereof. Background technique [0002] Silicone rubber has excellent properties such as UV resistance, weather resistance, and temperature resistance. There are mainly two methods of room temperature vulcanization and high temperature vulcanization silicone rubber. Among them, room temperature vulcanization silicone rubber has the characteristics of curing without heating and is easy to use. The room temperature vulcanized silicone rubber includes two kinds of one-component and two-component condensation silicone rubber. Although one-component does not need to be mixed before use, it has the advantage of being convenient to use, but it has the disadvantage of slow curing speed, especially slow curing in deep parts. Therefore, in some rapidly developing industries, such as solar energy, electronic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/04C09J183/08C09J183/07C09J11/04C09J11/06C09J11/08C08G77/06C08G77/04C08G77/20C08G77/26
CPCC08G77/04C08G77/06C08G77/20C08G77/26C08K2003/265C08K2201/011C08L2205/02C08L2205/025C08L2205/035C09J11/04C09J11/06C09J11/08C09J183/04C08L83/04C08L83/08C08K13/06C08K9/06C08K7/26C08K9/04C08K3/26
Inventor 肖明王吉陈永全
Owner 富乐(苏州)新材料有限公司
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