High-temperature-resistant adhesive tape as well as high-temperature-resistant release film and high-temperature-resistant adhesive used by high-temperature-resistant adhesive tape

Abstract

The invention relates to a high-temperature-resistant adhesive tape as well as a high-temperature-resistant release film and a high-temperature-resistant adhesive used by the high-temperature-resistant adhesive tape. A raw material formula of the high-temperature-resistant adhesive comprises the following components: 40-80 parts of ethylene glycol dimethacrylate, 20-30 parts of octadecyl acrylate, 5-10 parts of phenyltrimethoxysilane, 5-10 parts of vinyltriisopropenyloxysilane, 2-10 parts of nano-silica, 1-5 parts of aluminium hexafluoroacetylacetonate, 2-6 parts of polyvinyl alcohol, 2-5 parts of an emulsifier, 1-3 parts of an initiator and 200-350 parts of deionized water. A raw material formula of a film spraying material of the high-temperature-resistant release film comprises the following components: 60-80 parts of polyimide, 10-30 parts of 1,3,5-tris(3,3,3-trifluoropropyl)methylcyclotrisiloxane, 5-25 parts of polybutylene terephthalate, 2-10 parts of an ethylene vinyl acetate copolymer, 2-8 parts of vinyl phenyl silicon oil, 1-3 parts of dioctyl sebacate and 1-4 parts of dibutyltin dilaurate. The heat-resistant pressure sensitive adhesive tape prepared by the invention can work at 70-160 DEG C and can resist the high temperature of 600 DEG C or above in a short time.

Description

technical field [0001] The invention relates to a high-temperature-resistant adhesive tape, a high-temperature-resistant release film and a high-temperature-resistant adhesive used therein, and belongs to the technical field of adhesive materials. Background technique [0002] With the rapid development of the economy, heat-resistant tapes have been used as heat preservation and high-temperature paint products resistant to 100°C-200°C, protective tapes for engine or engine room mechanical components, and metal welding fields. Adhesive tape generally consists of base material, release film and adhesive. There is a strong demand for adhesive tapes with excellent heat resistance in the market. [0003] The release film used in traditional tapes can be divided into three categories according to raw materials: glassine release film, polyethylene coated release film (PEK) and kaolin coated release film. Among them, polyethylene coated release film is because of its Dimensional s...

AI Technical Summary

Problems solved by technology

[0003] The release film used in traditional tapes can be divided into three categories according to raw materials: glassine release film, polyethylene coated release film (PEK) and kaolin coated release film. Among them, polyethylene coated release film is because of its Dimensional stability and other advantages, mass-produced in China, and widely used in tapes, advertising and other industries, but the melting point of polyethylene is low, it will soften at about 80 ° C, thereby degrading, and such as polyvinyl chloride, polycarbonate Although , polyurethane and nylon can also be used in different fields, their common disadvantage is that they are poor in high temperature resistance. Industry is not allowed

[0004] Traditional adhesives include acrylic adhesives, natural rubber adhesives and synthetic rubber adhesives. Among the three adhesives, synthetic rubber adhesives have the worst high temperature resistance, while acrylic adhesives have better high temperature resistance, but at higher temperatures, acrylic adhesives The heat resistance becomes worse and worse. As the temperature rises to 100°C, the peel strength of the tape will gradually decrease and the holding force will also decrease significantly.