1. Semiconductor manufacturing: In the semiconductor industry, high-concentration silica sol is widely used in the chemical mechanical polishing (CMP) process. As the main component of the polishing liquid, it can effectively remove impurities and damage on the surface of silicon wafers and improve the smoothness and flatness of silicon wafers.
2. Coatings industry: High-concentration silica sol can be used as a film-forming substance for coatings and compounded with acrylic esters, vinyl acetate resin emulsions, etc. This kind of coating is not only green and environmentally friendly, but also has excellent weather resistance, water resistance and washability. It is widely used in construction, automobiles, furniture and other fields.
3. Precision casting: In the precision casting industry, high-concentration silica sol is used as an adhesive to significantly improve the quality and precision of castings. Compared with traditional water glass or ethyl silicate hydrolyzate, silica sol has higher bonding strength and better high temperature resistance, so it is widely used in high-end manufacturing fields such as aviation, aerospace, and automobiles.
4. Other fields: In addition to the above fields, high-concentration silica sol is also widely used in refractory materials, textile industry, papermaking industry, catalyst carriers and other fields. In refractory materials, silica sol can significantly improve the product's resistance to high temperatures and thermal shock; in the textile industry, silica sol can be used as an antistatic agent, softener, etc.; in the papermaking industry, silica sol can improve the strength and smoothness of paper.