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Free radical, moisture and UV triple curable sealant and preparation method thereof

A triple curing and sealant technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of high temperature, long curing time, high volatile content, etc., and achieve the effect of reducing the initiation temperature

Inactive Publication Date: 2020-04-03
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the silicone sealants commonly used in the market are single-component, which are vulcanized at room temperature by moisture in the air, with long curing time and high volatile content; traditional free radical curing systems require higher temperatures; UV curing systems have "dark areas" ; Hydrosilylation system one-component sealant requires low temperature storage

Method used

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  • Free radical, moisture and UV triple curable sealant and preparation method thereof
  • Free radical, moisture and UV triple curable sealant and preparation method thereof
  • Free radical, moisture and UV triple curable sealant and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] Functional MQ resin, functional methyl silicone oil, vinyltrimethoxysilane, spherical hollow glass microspheres (true density 0.38~0.42g / cm 3 , particle size D90 is 40-70μm), white carbon black (specific surface area is 160-200m 2 / g of hydrophobic silica), benzoyl peroxide, dibutyltin dilaurate, 2-hydroxy-2-methyl-1-phenyl-1-acetone, black color paste according to 20:30:3: Mix in a weight ratio of 10:5:3:2:1:0.03. After vacuum defoaming, it was cured at 100°C for 0.5h. The performance of the sample is shown in Table 1, and the test method is shown in Table 1.

Embodiment 2

[0033] Functional MQ resin, functional methyl silicone oil, vinyltrimethoxysilane, spherical hollow glass microspheres (true density 0.38~0.42g / cm 3 , particle size D90 is 40-70μm), white carbon black (specific surface area is 160-200m 2 / g of hydrophobic silica), benzoyl peroxide, dibutyltin dilaurate, 2-hydroxy-2-methyl-1-phenyl-1-acetone, black color paste according to 20:30:3: Mix in a weight ratio of 10:5:3:2:1:0.03. After vacuum defoaming, first cure at 100°C for 0.5h, and then place it in room temperature and 50% humidity environment for 2h. The performance of the sample is shown in Table 1, and the test method is shown in Table 1.

Embodiment 3

[0035] Functional MQ resin, functional methyl silicone oil, vinyltrimethoxysilane, spherical hollow glass microspheres (true density 0.38~0.42g / cm 3 , particle size D90 is 40-70μm), white carbon black (specific surface area is 160-200m 2 / g of hydrophobic silica), benzoyl peroxide, dibutyltin dilaurate, 2-hydroxy-2-methyl-1-phenyl-1-acetone, black color paste according to 20:30:3: Mix in a weight ratio of 10:5:3:2:1:0.03. After vacuum defoaming, first cure at 100°C for 0.5h, and then under natural light for 2h, the performance of the sample is shown in Table 1, and the test method is shown in Table 1.

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Abstract

The invention relates to a free radical, moisture and UV triple curable sealant. The free radical, moisture and UV triple curable sealant is a single-component adhesive, wherein a functional MQ resin,a functional methyl silicone oil, a silane coupling agent, spherical hollow glass beads, white carbon black, a peroxide catalyst, a moisture curing catalyst, a UV curing catalyst and a black color paste are mixed according to the weight ratio of (20-35): (40-50): (3-7): (10-15): (4-15): (3-9): (1-6): (0.5-4): (0.02-0.1). The adopted functional MQ resin and functional methyl silicone oil can reduce the peroxide initiation temperature of traditional vinyl silicone resin and vinyl silicone oil; moisture curing and UV curing can make up the defect of incomplete curing caused by inhibition of oxygen on peroxide curing from multiple aspects; due to the introduction of the spherical hollow glass beads, the glue density is reduced, and a promising application prospect in the field of pursuing light-weight devices is achieved.

Description

technical field [0001] The invention relates to a free radical, moisture and UV triple curing sealant and a preparation method thereof, belonging to the field of organic silicon resin modification. [0002] technical background [0003] Silicone sealants have achieved unprecedented development, and have played an important role in various fields related to human clothing, food, housing, and transportation, such as aerospace, rail transit, and new energy. It has the functions of anti-leakage, waterproof, anti-vibration, sound insulation and heat insulation. [0004] Most of the silicone sealants commonly used in the market are single-component, which are vulcanized at room temperature by moisture in the air, with long curing time and high volatile content; traditional free radical curing systems require higher temperatures; UV curing systems have "dark areas" ; Hydrosilylation system one-component sealants require low temperature storage. Contents of the invention [0005]...

Claims

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Application Information

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IPC IPC(8): C09J183/06C09J11/04C09J11/06C09J11/08C08G77/20C08G77/38C08G77/12
CPCC08G77/12C08G77/20C08G77/38C08K2201/003C08K2201/006C08L2205/025C09J11/04C09J11/06C09J11/08C09J183/06C08L83/06C08K13/04C08K7/28C08K7/26C08K5/5425
Inventor 王传萍王建斌陈田安
Owner YANTAI DARBOND TECH
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