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

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...