silicone dioxide 200 in UPR

Fumed silica in unsaturated resins is mainly reflected in the following aspects:

1：Toughening and Enhancing Mechanical Properties: Adding fumed silica to unsaturated polyester resin can significantly improve its toughness, mechanical properties, and tensile strength. The nano particle size and abundant surface hydroxyl groups of fumed silica make it a preferred reinforcing and thixotropic agent for polymer materials. When the resin is subjected to external impact, the gas-phase silica particles and the resin matrix jointly bear the impact force, consuming some of the impact energy, thereby improving the toughness of the resin.

2：Improving thixotropy and construction performance: Gas phase silica has excellent thickening thixotropy, which can endow the resin with good thixotropy and reduce flow and dripping during use. 

3：Improving transparency and physical properties: Adding a small amount of fumed silica to unsaturated resin can endow the resin with excellent transparency and physical properties. The addition of gas-phase silica does not change the characteristics of the matrix resin, and its particle size is small, the specific surface area is large, the oil absorption value is high, and it has good compatibility with the resin and good stability.

4：Extended service life: The addition of fumed silica can improve the water and heat resistance of the resin, thereby extending its service life. After adding gas-phase silica to unsaturated resin, the water resistance and heat resistance of the resin are significantly improved, making it suitable for a wider range of applications13.

5：Specific application examples of fumed silica in unsaturated resins include:

Adhesive coating resin: The addition of fumed silica can improve the thixotropy of adhesive coating resin, making it have good tensile strength, bending resistance, water resistance, heat resistance and other properties, thereby extending its service life by 13.

Thixotropic resin: The addition of fumed silica can endow the thixotropic resin with excellent thixotropic properties, reducing the flow and dripping during use.

Atomic ash: Gas phase silica can be used as an anti settling agent, with excellent anti settling effect and excellent thixotropic performance.

In summary, the application of fumed silica in unsaturated resins not only improves the physical and construction properties of the resin, but also extends its service life, and is widely used in various industrial fields.