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Silicon dioxide Nanopowder
2024.11.28
Silicon dioxide Nanopowder
Product Overview
The basic structure of nano silica is SiO2, which is in the form of amorphous white powder. The microstructure can be spherical, flocculent, or network like quasi particle structure. Its surface contains unsaturated residual bonds and hydroxyl groups with different bonding states, which make it excellent in various applications. There are three main methods for preparing nano silica, including precipitation method: high-temperature hydrolysis of silicon halides in a hydrogen oxygen flame to generate nano silica. Sol gel method: take silanolate as precursor, hydrolyze and condense in solvent to form sol and gel, and then dry and calcine to obtain nano silica. Gas phase method: Nano silica is generated by high-temperature hydrolysis of silicon halides in a hydrogen oxygen flame.
technical parameter
Form: White powder
Purity: 99%
Particle size: 20 nm
Specific surface area: 145-160 m2/g
This product has a high surface hydroxyl group and good water absorption
Product Features
High specific surface area: Due to its small particle size, nano silica has a very high specific surface area, which provides it with more active sites.
Reflective ability: It can effectively reflect ultraviolet, visible, and infrared light, making it very useful in many applications that require UV protection.
Biocompatibility: Nano silica has good biocompatibility and can be used in the biomedical field.
Product application
Electronic packaging materials: Due to their high dielectric, high heat resistance, and high filling capacity, they are widely used in the electronic and electrical industry.
Rubber modification: Improve the tensile strength, tear resistance, and wear resistance of rubber products, significantly improving the performance of rubber.
Coatings and adhesives: used to improve the rheological and thixotropic properties of coatings and adhesives, enhance their anti settling and thickening effects.
In the field of optoelectronics, it has wide applications in optical sensors, solar cells, display technology, etc., such as improving the photoelectric conversion efficiency of dye-sensitized solar cells.
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