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Silyl-terminated polyether sealant and preparing method thereof

A silyl-terminated polyether and sealant technology, which is applied in the direction of polyether adhesives, adhesives, adhesive types, etc., to achieve good adhesion, excellent water resistance, and easy sizing effects

Active Publication Date: 2015-12-23
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a silyl-terminated polyether sealant with excellent water resistance and good adhesion and a preparation method thereof. The sealant prepared by the invention has good adhesion and water resistance on most substrates, especially in The effect is better on stainless steel substrates, which solves some deficiencies in existing sealants

Method used

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  • Silyl-terminated polyether sealant and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 30 parts of silane-terminated polyether S303H, 5 parts of diisononyl phthalate, 25 parts of nano-active calcium carbonate, 1 part of titanium dioxide, 1 part of bis(2,2,6,6-tetramethyl-4 -Piperidinyl) sebacate, 1 part of 2-(2'-hydroxy-3'5'-di-tert-butyl)-5-chloro-benzotriazole is added to the double planetary stirring tank in turn, at 100~ Stir and disperse at 110°C and vacuum dehydrate for 2 hours, the vacuum degree is not less than -0.098MPa, cool to below 50°C, add 1 part of polyethyl silicate Si40 into the double planetary stirring tank, and mix for 10 minutes under nitrogen protection. Then add 0.5 parts of N-β-aminoethyl-γ-aminopropyl trimethoxysilane and 0.5 parts of γ-methacryloxypropyl trimethoxysilane into the double planetary stirring tank and mix for 10 minutes under nitrogen protection , and finally add 0.5 parts of U-220H into the stirring tank and mix for 10 minutes under vacuum, the vacuum degree is not less than -0.098MPa, N 2 Just seal the package.

Embodiment 2

[0024] 50 parts of silyl-terminated polyether SAT400, 20 parts of diisodecyl phthalate, 45 parts of nano-active calcium carbonate, 10 parts of titanium dioxide, 2 parts of bis(2,2,6,6-tetramethyl-4 -Piperidinyl) sebacate, 2 parts of 2-(2'-hydroxy-3'5'-di-tert-butyl)-5-chloro-benzotriazole were sequentially added to the double planetary stirring tank, at 100~ Stir and disperse at 110°C and vacuum dehydrate for 2 hours, the vacuum degree is not less than -0.098MPa, cool to below 50°C, add 3 parts of polyethyl silicate Si40 into the double planetary stirring tank, mix for 10 minutes under nitrogen protection, Then add 2 parts of aminopropyltriethoxysilane and 1 part of γ-methacryloxypropyltrimethoxysilane into the dual planetary stirring tank and mix for 10 minutes under nitrogen protection, and finally add 2 parts of U-303 Mix in a vacuum state for 10 minutes in the stirred tank, the vacuum degree is not less than -0.098MPa, N 2 Just seal the package.

Embodiment 3

[0026] 40 parts of silane-terminated polyether MAX620, 12 parts of SAX-015, 30 parts of nano-active calcium carbonate, 5 parts of carbon black, 1.5 parts of bis(2,2,6,6-tetramethyl-4-piperidinyl) Add sebacate and 1.5 parts of 2-(2'-hydroxy-3'5'-di-tert-butyl)-5-chloro-benzotriazole into the double planetary stirring tank in sequence, and stir at 100~110°C Disperse and vacuum dehydrate for 2 hours, the vacuum degree is not less than -0.098MPa, cool to below 50°C, add 2 parts of polyethyl silicate Si40 into the double planetary stirring tank, mix for 10 minutes under the protection of nitrogen, and then add 1 part of ammonia Add propyltrimethoxysilane and 1 part of γ-methacryloxypropyl trimethoxysilane into the double planetary stirring tank and mix for 10 minutes under nitrogen protection, and finally add 1 part of stannous octoate into the stirring tank under vacuum Mix for 10 minutes, the vacuum degree is not less than -0.098MPa,N 2 Just seal the package.

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Abstract

The invention provides silyl-terminated polyether sealant excellent in waterproof performance and good in adhesion performance. The silyl-terminated polyether sealant is prepared from 30 parts to 50 parts of silyl-terminated polyether, 5 parts to 20 parts of plasticizers, 25 parts to 45 parts of reinforcing fillers, 1 part to 10 parts of pigment, 1 part to 2 parts of ultraviolet absorbers, 1 part to 2 parts of light stabilizers, 1 part to 3 parts of cross-linking agents, 1 part to 3 parts of thickening agents and 0.5 part to 2 parts of catalysts. The sealant is packaged in a single-component mode, sealant sizing is easily carried out, after the sealant is solidified, a sealant layer has high adhesive force to a base material, the adhesion performance is not obviously reduced after the sealant is soaked in water, the adhesive strength of the sealant is higher than the adhesive strength, obtained before and after universal sealant on a stainless steel base material is soaked in water, of the universal sealant, and using reliability is improved.

Description

technical field [0001] The invention relates to a silane-modified polyether sealant with excellent water resistance and good adhesion and a preparation method thereof. Background technique [0002] Silicone-terminated polyether elastic sealant is also called silicone modified polyether sealant, modified silicone sealant and MS sealant. It originated from Zhongyuan Company in Japan. It was mainly used in large buildings in the early days. Later, through the development of serialization and functional products, the terminal silyl polyether sealant can also be used in automobile manufacturing, railway transportation, containers, equipment manufacturing, and air conditioning. Especially when it is used in containers, refrigerators, washing machines and other occasions, because it is often exposed to moisture, special requirements are put forward for its water resistance. [0003] A terminal silane-based polyether sealant with excellent water resistance and good adhesion is main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J171/00C09J11/04C09J11/06C09J11/08
Inventor 林春霞王建斌陈田安解海华
Owner YANTAI DARBOND TECH
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