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Silicone sealant as well as preparation method and application thereof

A silicone sealant and compound technology, which is applied in the direction of adhesives, natural resin chemical modification, adhesive additives, etc., can solve the problems of reducing construction efficiency, the environment and the physical impact of workers, and achieve the effect of improving the bonding effect

Pending Publication Date: 2022-03-25
GUANGZHOU JOINTAS CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the surface of the thermal insulation board is not only porous, but also alkaline, and the general sealant needs to be coated with a primer to form good adhesion
Primer coating not only adds a process, reduces construction efficiency, but also has a certain impact on the environment and the health of workers

Method used

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  • Silicone sealant as well as preparation method and application thereof
  • Silicone sealant as well as preparation method and application thereof
  • Silicone sealant as well as preparation method and application thereof

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0028] The raw materials used in embodiment and comparative example are as follows:

[0029] Base polymer-1: α,ω-dihydroxy polydimethylsiloxane, viscosity at 25°C is 20000mpa.s, purchased from Wacker Chemicals (China) Co., Ltd.;

[0030] Base polymer-2: α, ω-dihydroxy polydimethylsiloxane, viscosity at 25°C is 50000mpa.s, purchased from Momentive (Shanghai) Trading Co., Ltd.;

[0031] Simethicone-1: Viscosity at 25°C is 100mpa.s, purchased from Wacker Chemicals (China) Co., Ltd.;

[0032] Simeth...

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Abstract

The invention discloses a silicone sealant which comprises the following components in parts by weight: 100 parts of a base polymer; 5 to 20 parts of dimethyl silicone oil; 100 to 200 parts of a filling material; 9-20 parts of a cross-linking agent; 2-5.5 parts of a compound additive; based on the total weight of the silicone sealant, the content of the free chlorine element is less than or equal to 5ppm; the compound additive is prepared by reacting a compound A, rosin resin and an organic tin catalyst, and the weight ratio of the compound A to the rosin resin to the organic tin catalyst is (24-30): (7.5-3.5): 1. According to the silicone sealant, the compound A, the rosin resin and the organic tin catalyst are subjected to a reaction in advance, and then the content of free chlorine elements is inhibited to be 5 ppm or below, so that the silicone sealant can generate good adhesion to the thermal insulation integrated plate without prime coat during use.

Description

technical field [0001] The invention relates to the technical field of adhesive materials, in particular to a silicone sealant and its preparation method and application. Background technique [0002] The thermal insulation integrated board is a thermal insulation material composed of thermal insulation layer, strong composite glue, and decorative coating. It has the advantages of environmental protection, thermal insulation, waterproof and moisture-proof, and simple and convenient construction. [0003] The facing layer of the thermal insulation integrated board is calcium silicate or pressure cement board. The raw material of the calcium silicate board is a lightweight board made of silicon, calcium, pulp, fiber, etc. after high temperature pressing. Calcium silicate board has low thermal conductivity and good thermal insulation performance. The thermal insulation performance of the calcium silicate board is significantly better than that of ordinary brick walls, and it ...

Claims

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Application Information

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IPC IPC(8): C09J183/04C09J11/04C09J11/06C09J11/08C09F1/04
CPCC09J183/04C09J11/04C09J11/06C09J11/08C09F1/04C08K2201/011C08K2003/265C08K2201/003C08K2201/014C08L83/04C08L93/04C08K3/26C08K5/544
Inventor 谢丽莎徐文远黄承相石正金
Owner GUANGZHOU JOINTAS CHEM
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