Preparation method of two-component silicone sealant for laminated glass

Abstract

The invention discloses a preparation method of a two-component silicone sealant for laminated glass. The preparation method comprises the following steps: by taking a silane coupling agent as an adhesive, supporting nanometer titania onto a nano-zeolite molecular sieve by utilizing a sol-gel reaction, drying, and performing high-temperature thermal treatment so as to obtain a titania-zeolite molecular sieve composite material; and mixing with raw materials such as alpha,omega-dyhydroxyl polydimethylsiloxane, alkyl-terminated polydimethylsiloxane, methyl silicone oil, a cross-linking agent, acatalyst and the like, thereby obtaining the two-component silicone sealant for laminated glass. The two-component silicone sealant for laminated glass prepared by the method disclosed by the invention can achieve the effects of effectively reducing moisture intrusion and further well alleviating edge abhesion, bubbles and other lesions of the laminated glass, and is excellent in aging resistanceand high in durability.

Description

technical field

[0001] The invention relates to the technical field of sealing materials, in particular to a method for preparing a silicone two-component sealant for laminated glass. Background technique

[0002] Laminated glass is a product obtained by bonding two or more pieces of glass with transparent bonding materials. Most of the bonding materials are thermoplastic resins, such as PVB, EVA, SGP, TPU, etc., which have excellent safety and The permeability of light and the function of blocking ultraviolet rays are widely used in lighting roofs, canopies, doors and windows of buildings, as well as walls and interior decoration partitions. Thermoplastic resin and glass are bonded together by intermolecular adhesion. Once the bonding layer at the edge of the glass is eroded by the outside world and degumming and blistering occur, it will not only seriously affect the appearance of the laminated glass, but also cause the laminated glass to lose its quality. The mechanical ...