Nanometer silica's application

Silica is one of the important inorganic new materials, especially the nano-sized silica due to its small particle size, pore, specific surface area, surface strong adsorption, surface energy, high chemical purity, good dispersion performance, heat resistance, resistance has specific performance, with its excellent stability, reinforcing, thickening and thixotropic.

Silicon dioxide is widely used in many subjects and fields

Electronic packaging materials  

The curing time (2.0-2.5h) and curing temperature can be reduced to room temperature, which can significantly improve the sealing performance of the device and increase the service life of the device.  

Resin composite materials  

The properties of resin base materials can be improved by fully and uniformly dispersing nano silica particles into resin materials.  Including: A improved strength and elongation;  B improve wear resistance and improve the surface finish of the material;  C Aging resistance.  

Plastics  

The use of nano silicon dioxide light transmittance, small particle size, can make plastic become more dense, adding silicon dioxide in polystyrene plastic film, can improve its transparency, strength, toughness, waterproof performance and anti-aging performance.  The main technical indexes (water absorption, insulation resistance, compressive residual deformation, flexural strength, etc.) of polypropylene, a common plastic, have reached or exceeded those of nylon 6.  

Coating  

It can improve the suspension stability, thixotropy, weather resistance, washing resistance, etc., so that the combined strength of the film and the wall is greatly improved, the hardness of the film is increased, and the surface self-cleaning ability is also improved.  

Rubber  

Silica is known as white carbon black, adding a small amount of nano-sio2 in ordinary rubber, the strength, wear resistance and anti-aging properties of the product have reached or exceeded high-grade rubber products, and can keep the color unchanged for a long time.  Nano modified color EPDM waterproof roll material, its wear resistance, tensile strength, flexural resistance, aging resistance are improved obviously, and the color is bright, excellent color retention effect.  

Yan (dye) material  

By adding nano-sio2 to the surface modification of organic pigment (dyeing) material, not only the anti-aging performance of the pigment (dyeing) material is greatly improved, but also the brightness, hue and saturation index are also improved to a certain extent, greatly expanding the grade and application range of organic pigment (dyeing) material.  

Ceramics  

Nano SiO2 instead of nano Al2O3 can not only play the role of nano particles, but also the second phase of the particle, can improve the strength, toughness and hardness of ceramic materials, elastic modulus and other properties.  Using nano-sio2 composite ceramic substrate, the density, toughness and finish of the substrate are improved, and the sintering temperature is greatly reduced.  

Sealant, binder  

The addition of nano-sio2, coated with a layer of organic material on the surface, forming a network structure, forming a silica structure, so that it has hydrophobicity, can inhibit colloidal flow, accelerate the curing speed, improve the bonding effect, increase the sealing and impermeability of the product.  

FRP products  

The grafting and bonding of nano-particles with organic polymer can increase the toughness, tensile strength and impact strength, and heat resistance.  

Drug carrier  

Nano SiO2 as a carrier can play a good sustained release effect.  

Cosmetics  

Nano SiO2 is inorganic composition, easy to be compatible with other components of cosmetics, non-toxic, tasteless, white, strong uv reflection ability, good stability, is not decomposed after ultraviolet radiation, does not change color, and will not react with other components in the formula, for the upgrading of sunscreen cosmetics laid a good foundation.  

Antibacterial materials  

Using the large specific surface area, multi-mesoporous structure, super adsorption capacity and strange physical and chemical properties of nano-sio2, functional ions such as silver ions are uniformly designed into the mesoporous surface of nano-SiOX, and the nano-antibacterial powder with high efficiency, durability, high temperature resistance and broad spectrum of antibacterial is developed.  Can be widely used in bills, medical and health, chemical building materials, home appliances, functional fibers, plastic products and other industries.