Definition and Basic Properties
Silicone release coatings are specialty materials with polysiloxane as their core component. They form an elastic film with low surface tension through chemical crosslinking. Their key advantages lie in their high-temperature resistance, oxidation resistance, and anti-adhesion properties, enabling stable operation in extreme operating conditions ranging from -60°C to 200°C. Compared to traditional release coatings, silicone release coatings offer longer service life, greater stability, and lower maintenance costs. They also comply with environmental standards such as ROHS, making them indispensable auxiliary materials in modern industry.

Core Functions and Applications
Protecting Pressure-Sensitive Adhesives
Serving as a barrier between the substrate and the adhesive, silicone release coatings prevent contamination and adhesive failure. For example, in baking paper, their coating prevents adhesion to baked goods while also withstanding high-temperature environments. In self-adhesive envelopes and labels, release coatings provide stable release force, supporting automated labeling processes. Improving Industrial Production Efficiency
In plastic and rubber processing, release agents sprayed on mold surfaces prevent the adhesion of materials like polyethylene and polypropylene, improving injection and extrusion molding efficiency. In composite manufacturing, they are used to release fiberglass and carbon fiber products, preventing resin residue and reducing mold wear.
Medical and Specialty Industrial Applications
The release paper coatings of medical dressings (such as bandages and sanitary napkins) rely on silicone release agents to ensure stable separation between the adhesive layer and the packaging material under sterile conditions. In the aerospace industry, silicone release agents are the preferred material for releasing composite molds due to their resistance to high temperatures and chemical corrosion.

Technical Advantages and Development Trends
Silicone release agents can achieve controlled release force from light to heavy release by adjusting the ratio of the main agent (vinyl silicone oil) to the crosslinker (hydrogenated silicone oil). In recent years, UV-curable release agents have become a hot research and development topic in the industry due to their fast curing speed, low energy consumption, and lack of solvent pollution. In the future, with the application of nano-modification technology (such as the addition of nano-silica), the wear resistance and stability of release agents will be further improved, providing innovative solutions for precision manufacturing, green packaging and other fields.