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Sealing silicone glue with low moisture permeability for hollow glass and its production process

A technology of silicone sealant and water vapor transmission rate, which is applied in chemical instruments and methods, adhesives, and other chemical processes, can solve the problems of unfriendly environment, reluctance to use, and low air permeability, and achieve environmental friendliness, Improved service life and excellent adhesion

Active Publication Date: 2008-01-02
CHENGDU GUIBAO SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Polysulfide glue and polyurethane glue, although elastic and low air permeability, are not as good as silicone glue in terms of UV resistance, heat resistance, and cold resistance, which is the fundamental reason for their service life.
At the same time, people are more and more reluctant to use it due to the smell and environmental unfriendliness.
[0006] Ordinary silicone sealant is usually 50g / m because of its high water vapor transmission rate 2 d. After research, petroleum resin has a good effect in reducing the water vapor transmission rate of silicone sealant, and there is no report in this regard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1: Component A: 100 parts by mass of α, ω-dihydroxypolydimethylsiloxane with a viscosity of 10 Pa·S at a temperature of 25°C, C 55 parts by weight of petroleum resin, 80 parts by weight of light calcium carbonate processed by fatty acid, 40 parts by weight of quartz powder, 25 parts by weight of glass hollow microspheres whose surface is treated with hexamethyldisilazane and whose bulk density is 0.8g / ml, adding Stir evenly in a high-speed planetary mixer;

[0042] Component B: 60 parts by weight of ethyl orthosilicate, 1 part by weight of dibutyl tin dilaurate, 10 parts by weight of γ-(2,3 glycidoxy) propyl trimethoxysilane, γ-aminopropyl 10 parts by weight of triethoxysilane and 5 parts by weight of polydimethylsiloxane with a viscosity of 1 Pa·S at a temperature of 25° C. were added into a planetary mixer at a vacuum degree of 0.08 MPa and a rotation speed of 400 rpm to stir evenly.

[0043] At room temperature, the two components A and B are mixed according...

Embodiment 2

[0044] Example 2 A component: 100 parts by weight of α, ω-dihydroxypolydimethylsiloxane with a viscosity of 5 Pa·S at a temperature of 25°C, C 5 20 parts by weight of petroleum resin, 120 parts by weight of light calcium carbonate processed by fatty acid, 20 parts by weight of quartz powder, 10 parts by weight of glass hollow microspheres whose surface is treated with vinyltrimethoxysilane and whose bulk density is 0.4g / ml add and knead machine, stir evenly;

[0045] Component B: 40 parts by weight of propyl orthosilicate, 0.5 parts by weight of dibutyl tin diacetate, 20 parts by weight of γ-aminopropyltriethoxysilane, and a polymer with a viscosity of 0.7 Pa·S at a temperature of 25°C. Add 20 parts by weight of dimethylsiloxane into a planetary mixer at a vacuum degree of 0.09 MPa and a rotation speed of 200 rpm to stir evenly.

[0046] At room temperature, the two components A and B are mixed according to the weight ratio A:B=12:1 before use.

Embodiment 3

[0047] Example 3 Component A: 50 parts by weight of α, ω-dihydroxypolydimethylsiloxane with a viscosity of 10 Pa·S at a temperature of 25°C and α, ω-dihydroxypolydimethylsiloxane with a viscosity of 5 Pa·S at a temperature of 25°C 50 parts by weight of hydroxypolymethylphenylsiloxane, C 7 15 parts by weight of petroleum resin, 100 parts by weight of light calcium carbonate treated with rosin acid, 20 parts by weight of quartz powder, 10 parts by weight of glass hollow microspheres whose surface is treated with vinyltrimethoxysilane and whose bulk density is 0.7g / ml Kneader, stir evenly;

[0048] Component B: 50 parts by weight of polyethyl silicate, 0.8 parts by weight of dibutyl tin dioctoate, 10 parts by weight of γ-(2,3 glycidoxy) propyl trimethoxysilane, N-(β ammonia 5 parts by weight of ethyl)-γ-aminopropyltrimethoxysilane, 25 parts by weight of polydimethylsiloxane with a viscosity of 1Pa·S at a temperature of 25°C, added to a planetary mixer at a vacuum degree of 0.07M...

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Abstract

The sealing silicone glue with low moisture permeability for hollow glass contains two components, component A and component B. The component A is prepared with poly(alpha, omega-dihydroxy siloxane 100 weight portions, petroleum resin 5-20 weight portions, active calcium carbonate 80-120 weight portions, quartz powder 20-50 weight portions and hollow glass bead 10-30 weight portions, and through mixing in a kneading machine or high speed planetary stirrer. The component B is prepared with silicate ester 40-60 weight portions, catalyst 0.5-1 weight portions, silane coupler 5-20 weight portions and silicon oil 20-40 weight portions, and through mixing inside a planetary stirrer at vacuum degree 0.06-0.099 MPa and rotation speed 20-600 rpm. When the glue is used, component A and component B are mixed I the ratio of 11-13 at room temperature.

Description

technical field [0001] The invention relates to a low water vapor transmission rate silicone sealant for insulating glass and a manufacturing method thereof, belonging to the field of polymer sealing materials and its manufacturing. Background technique [0002] With the rapid development of national industrialization and urban construction, my country's energy resources are already facing huge challenges, and building energy conservation is imminent. For the entire building, the area of ​​doors and windows accounts for more than 20% of the building area, and glass accounts for about 70%. From the perspective of energy saving, about 50% of the energy loss of the entire building is on the doors and windows. Therefore, it is urgent to reduce the energy consumption of building doors, windows and exterior walls, and improve the heat insulation and air tightness of building doors, windows, and exterior walls. This puts forward stricter energy-saving requirements for the developme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/14C09K3/10C03C27/12C09J157/02
Inventor 袁素兰王有治卢麟邹百军
Owner CHENGDU GUIBAO SCI & TECH
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