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Hollow glass bi-component organosilicone sealant and preparation method and application thereof

A two-component, silicone technology, used in chemical instruments and methods, adhesives, other chemical processes, etc., can solve problems such as the effect of silicone sealants in blocking water vapor transmission, etc., and meet the equipment requirements. , Simple process, good adhesion effect

Active Publication Date: 2010-09-15
西卡(江苏)工业材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that so far, there has been no technical revelation on how to improve the effect of silicone sealants in blocking water vapor penetration in published patent documents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In parts by weight, the viscosity is 80000cps and is composed of dimethylmethoxysiloxy [(CH 3 ) 2 (CH 2 O)SiO 0.5 ] 100 parts of end-blocked polydimethylsiloxane, 10 parts of plasticizer, namely methyl silicone oil, and 100 parts of filler, namely, nano-active light calcium carbonate modified by resin acid, are put into a kneader stirring tank, and the temperature is maintained at 120°C , keep the vacuum degree within the range of 0.06-0.09MPa for dehydration and blending for 90 minutes, pass through a three-roller mill for 2 times, cool to room temperature and fill to obtain component A; also by weight, 100 parts of methyl silicone oil, 20 parts of carbon black, 30 parts of crosslinking agent methyltrimethoxysilane, 20 parts of tackifier γ-aminopropyltriethoxysilane and 0.2 part of catalyst dibutyltin dilaurate were added to the high-speed dispersion stirring tank, and the vacuum Keep at 0.06-0.09MPa, keep the rotating speed at 250rpm and mix for 30min, then fill to...

Embodiment 2

[0025] Viscosity is 80000cps by weight and by trimethoxysiloxy [(H 2 o 3 ) SiO 0.5 ] 100 parts of end-capped polydimethylsiloxane, 15 parts of hydrogenated mineral oil with a distillation range of 120-150 ° C and a viscosity of 50-500 centipoise and heavy weight modified by a silane coupling agent. Put 120 parts of calcium carbonate into the stirring tank of the kneader, keep the temperature at 130°C, and keep the vacuum degree at 0.06-0.09MPa for dehydration and blending for 75 minutes, pass through the three-roller mill twice, cool to room temperature, and fill to obtain Group A Parts; also by weight parts 100 parts of methyl silicone oil, 40 parts of carbon black, 50 parts of crosslinking agent ethyltrimethoxysilane, 25 parts of tackifier γ-glycidyl etheroxypropyl trimethoxysilane and catalyst Add 1 part of dioctyltin dilaurate into a high-speed dispersion stirring tank, keep the vacuum at 0.06-0.09MPa, keep the rotation speed at 400rpm, mix for 45min, and then fill to ob...

Embodiment 3

[0027] The viscosity is 80000cps and by ethyl dimethoxysiloxy [CH 3 CH 2 (CH 2 O) 2 SiO 0.5 ] 100 parts of end-capped polydimethylsiloxane, 12 parts of plasticizer phenyl silicone oil and 200 parts of barium sulfate are placed in a kneader stirring tank, and the temperature is kept at 150 ° C, and the vacuum degree is kept within the range of 0.06 to 0.09 MPa for dehydration and blending 30min, milled twice with a three-roller mill, cooled to room temperature, and filled to obtain component A; also in parts by weight, 100 parts of methyl silicone oil, 25 parts of carbon black, cross-linking agent methyl triethoxy Add 70 parts of base silane, 40 parts of tackifier N-(β-aminoethyl)-γ-aminopropyl-methyldimethoxysilane and 2 parts of catalyst dibutyl tin diacetate into the high-speed dispersion stirring tank, Keep the vacuum at 0.06-0.09MPa, keep the rotation speed at 780rpm and mix for 35 minutes, then fill to get component B. Fully mix component A and component B at a ratio...

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PUM

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Abstract

The invention relates to a hollow glass bi-component organosilicone sealant and a preparation method and application thereof. The hollow glass bi-component organosilicone sealant comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 100 parts of terminated polydimethylsiloxane, 10-30 parts of plasticizer and 100-400 parts of filler; and the component B comprises the following raw materials in parts by weight: 100 parts of plasticizer, 20-60 parts of carbon block, 30-70 parts of cross-linking agent, 20-60 parts of thickening agent and 0.2-2 parts of catalyst. The 100 percent tensile elongation modulus is 0.3-0.5MPa, the breaking elongation rate is 300-600 percent, the moisture transmissivity is 2.5-4.5g / m<2>.d, and the hollow gas bi-component organosilicone sealant has good adhesive force on a hollow glass base material and no corrosion on the base material. The preparation method has simple process and low equipment requirement; and a reaction by-product has no corrosion and can ensure the comprehensive implementation of technical effects of the bi-component low-permeability hollow glass bi-component organosilicone sealant. The invention is applied to a hollow glass frame and can play a role of ideal moisture obstruction.

Description

technical field [0001] The invention belongs to the technical field of polymer sealing materials for buildings, and in particular relates to a two-component silicone sealant for hollow glass, and also relates to a preparation method and application of the silicone sealant. Background technique [0002] With the progress of society, the development of economy and the improvement of people's living standards, energy problems have become increasingly prominent, and energy conservation has become a global revolution, and building energy conservation is no exception. In recent years, people's requirements for improving living conditions have become higher and higher. In order to pursue lighting and living comfort, housing construction itself generally develops in the direction of large windows, but the larger the windows of the building, the worse the energy-saving effect. According to statistics in our country, the energy lost through windows accounts for about 50% of the energy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/04C09J9/00C09K3/10C03C27/10
Inventor 张建忠陈春浩
Owner 西卡(江苏)工业材料有限公司
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