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A kind of acidic silicone sealant with good adhesion to stainless steel and preparation method thereof

A sealant and stainless steel technology, applied in chemical instruments and methods, adhesives, other chemical processes, etc., can solve the problems of stainless steel not having adhesive performance, poor adhesion, glass falling off, etc., and achieve significant economic benefits and social benefits Benefits, fast curing speed, and the effect of avoiding shedding

Active Publication Date: 2017-01-04
圣戈班汇杰(杭州)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But ordinary acidic silicone sealant does not have very good bonding performance to stainless steel
Especially in the process of transportation, due to poor adhesion, the glass often falls off and causes various troubles

Method used

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  • A kind of acidic silicone sealant with good adhesion to stainless steel and preparation method thereof
  • A kind of acidic silicone sealant with good adhesion to stainless steel and preparation method thereof
  • A kind of acidic silicone sealant with good adhesion to stainless steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] 1. Add a, w-dihydroxypolydimethylsiloxane 36KG and a, w-methylhydroxypolydimethylsiloxane 15KG white oil 15KG into the high-speed disperser, the vacuum degree is 0.09-0.095MPa, the speed 300 rpm, mixing for 30 minutes. Add 4.2KG of methyltriacetoxysilane into the high-speed disperser, the vacuum degree is 0.09-0.095MPa, the speed is 300rpm, mix for 30 minutes, add 6KG of fumed white carbon black, and the speed is 800rpm for 45 minutes, dibutyltin diacetate 0.04kg, the vacuum degree is 0.09-0.095MPa, the rotation speed is 400rpm, and the chemical reaction is carried out for 30 minutes. The ordinary acidic silicone sealant product was prepared, and the details of the performance test results of the product and the product in different states are shown in Table 1.

[0024] 2. Add a, w-dihydroxy polydimethylsiloxane 36KG and a, w-methylhydroxy polydimethylsiloxane 15KG white oil 15KG into the high-speed disperser, the vacuum degree is 0.09-0.095MPa, the speed 300 rpm, mix...

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Abstract

The invention discloses an acidic silicone sealant with good bonding performance on stainless steel, and a preparation method thereof. The sealant comprises the components of, by weight: 20-90 parts of a,w-dihydroxy polysiloxane, 2-10 parts of a plasticizer, 10-50 parts of a filling material, 3-10 parts of a thixotropic agent, 2-10 parts of a cross-linking agent, 1-5 parts of a tackifying agent, and 0.1-5 parts of a catalytic curing agent. Compared with prior arts, according to the invention, the novel tackifying agent is added, such that the sealant has good bonding performance on stainless steel. A silver-grey colorant is added into an acidic transparent system, such that the sealant has a shiny color that is substantially similar to that of stainless steel. Because the sealant is an acidic silicone sealant, curing speed is high. With the sealant, production efficiency can be substantially improved, bonding performance can be improved, and glass and stainless steel falling can be prevented. During the production process, energy consumption and water consumption are low, no three-waste (waste gas, waste water, and solid waste) is produced, and no environment pollution is caused. The sealant and the method has significant economic and social benefits.

Description

[0001] 【Technical field】 [0002] The invention relates to an acidic silicone stainless steel sealant and a preparation method thereof, belonging to the field of polymer building materials. [0003] 【Background technique】 [0004] Silicone sealants have excellent resistance to weather, humidity, ultraviolet rays and ozone aging. It has very good physical properties, adhesion and vulcanization properties. In recent years, silicone rubber has developed rapidly in many aspects. Especially in the application of stainless steel doors. Now people's pursuit of beauty is more and more demanding for perfection. Stainless steel doors need to use silver-gray sealant. However, although the glue of neutral calcium carbonate system has good bonding performance to stainless steel, it is difficult to adjust the shiny silver-gray. And the curing speed is slow. Silicone sealants based on neutral silica systems cure slowly. When producing stainless steel, due to the assembly line operation, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/06C09J11/06C09K3/10C08J3/24
Inventor 袁强
Owner 圣戈班汇杰(杭州)新材料有限公司
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