The application and contribution of silica in the field of environmental protection are mainly reflected in the following aspects:

1. As an environmentally friendly rubber reinforcing agent

As a rubber reinforcing agent, silica can significantly improve the tensile strength, tear strength and wear resistance of rubber, while improving the elasticity and heat resistance of rubber. In tire manufacturing, silica, as a tread reinforcing agent, can reduce rolling resistance and maintain excellent anti-slip performance, thereby saving fuel and reducing automobile exhaust emissions. This application not only improves the performance of rubber products, but also promotes the development of environmentally friendly products such as green tires, and has a positive effect on environmental protection.

2. Stabilizer in wind blade adhesive

In the field of wind power generation, silica is used as a stabilizer for wind blade adhesives. The adhesive used for wind blades is a highly polar epoxy resin system, which has extremely high requirements for bonding performance and strength, and also needs to have good viscosity, anti-sagging performance and anti-settling performance. Traditional hydrophilic fumed silica is prone to solvent-based effects, resulting in performance degradation. The strongly hydrophobic modified nano-scale fumed silica has stronger stability and can avoid the occurrence of solvent-based effects, thereby ensuring the bonding performance and strength of wind blades, providing strong support for the development of wind power generation, an environmentally friendly green new energy.

3. Removal agents in biofiltration

Biofiltration is a typical air pollution control process for treating volatile organic compounds. However, the mass transfer of hydrophobic volatile organic compounds to biofilms is limited, resulting in low removal efficiency of biofilms. In order to enhance the migration of hydrophobic organic compounds, hydrophobic fumed silica (a type of silica) can be added to the biofilter to improve the removal effect of hydrophobic organic compounds such as pentane. This application helps to reduce the emission of volatile organic compounds, improve air quality, and is of great significance to environmental protection.

4. Other environmental protection applications

In addition, silica is also widely used in various environmental protection fields. For example, it can be used as a catalyst carrier, a decolorizer, a matting agent in petrochemicals, and a plastic filler. These applications help reduce the emission of pollutants and the waste of resources, thereby promoting the development of environmental protection.

In summary, the application and contribution of silica in the field of environmental protection are multifaceted. It not only improves the performance and environmental friendliness of rubber products, but also provides strong support for the development of new energy sources such as wind power generation; at the same time, through applications such as biofiltration, silica also helps to reduce the emission of air pollutants and improve air quality. These applications and contributions fully demonstrate the importance and potential of silica in the field of environmental protection.