Definition and Composition

• Definition: Organosilicon pressure - sensitive adhesive generally refers to the pressure - sensitive adhesive with organosilicon polymer as the main body, or the acrylic and organosilicon - modified rubber - type pressure - sensitive adhesives modified by organosilicon polymers. It is a kind of colloid with permanent stickiness after curing. It is dry at room temperature and has dryness and permanent stickiness.
• Composition: It usually consists of silicone rubber, MQ resin, organic solvents and additives. Among them, silicone rubber is the raw rubber and the film - forming substance; MQ resin is dispersed in the silicone rubber in an island - like structure, providing tackifying and reinforcing effects.

Performance Characteristics

• High and Low Temperature Resistance: It can maintain stable performance in the temperature range of - 75℃ - 300℃, far exceeding the service temperature range of traditional rubber - type and acrylate - based pressure - sensitive adhesives.
• Chemical Resistance: It has excellent chemical resistance and good tolerance to chemicals such as acids, alkalis and salts, and can maintain its adhesive performance in various chemical environments.
• Electrical Insulation: It has excellent electrical properties, with a low dielectric constant and high insulation resistance. It can be used in the field of electrical insulation to ensure the safe operation of electronic equipment.
• Adhesive Performance: It can achieve good bonding with a variety of difficult - to - bond materials such as untreated polyolefins, fluoroplastics, polyimides and polycarbonates. Moreover, it has high adhesive strength and good peel force stability.
• Physiological Inertness: It is non - toxic, non - irritating, friendly to human skin, and has good biocompatibility, so it can be applied in the medical field.
• Weather Resistance: It has excellent weather resistance. When exposed to outdoor environments for a long time, it is not easily affected by natural factors such as ultraviolet light, rainwater and wind - blown sand, and its performance remains stable.