Silicon Composition Ceramic Coating

Silicon Composition Ceramic Coating

Are you confused about the composition of ceramic coating? What are the characteristics of silica/polysiloxane/silazane as a component of ceramic coating? Silica: Nano-silicon dioxide is an inorganic chemical material, commonly known as white carbon black. Because it is ultra-fine nanometer, the...
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Are you confused about the composition of ceramic coating? What are the characteristics of silica/polysiloxane/silazane as a component of ceramic coating?

Silica: Nano-silicon dioxide is an inorganic chemical material, commonly known as white carbon black. Because it is ultra-fine nanometer, the size range is 1~100nm, so it has many unique properties, such as anti-ultraviolet optical properties, and can improve the anti-aging, strength and chemical resistance of other materials. The uses are very wide. Nano-scale silica is an amorphous white powder, non-toxic, odorless, and non-polluting. Its microstructure is spherical, showing a flocculent and net-like quasi-particle structure. Its molecular and structural formulas are SiO2 and are insoluble in water.

Nanomaterials have small size effects, surface effects and macroscopic quantum tunneling effects, so they exhibit many unique properties and have broad application prospects in catalysis, light filtering, light absorption, medicine, magnetic media and new materials.

Due to the small size effect of nano-silica (SiO₂), surface interface effect, quantum size effect and macroscopic quantum tunnel effect, special optical and electrical properties, high magnetoresistance, nonlinear resistance and high strength at high temperatures , High toughness, good stability and other singularities

Nano silica (SP30) has a three-dimensional network structure, has a huge specific surface area, shows great activity, can form a network structure when the coating is dried, and at the same time increases the strength and smoothness of the coating, and improves the pigment’s Suspended, can keep the color of the paint without fading for a long time. In building interior and exterior wall coatings, if nano-silica (SP30) is added, the can-opening effect of the coating can be significantly improved. The coating does not delaminate, has thixotropy, anti-sagging, and has good construction performance, especially the anti-contamination performance. , Has excellent self-cleaning ability and adhesion. Nano SiO2 can also be used with organic pigments to obtain photochromic coatings, M. P. J. Peeters et al. synthesized a completely transparent temperature-resistant coating containing nano-silica (same as VK-SP30) by the sol-gel method. Schmidt et al. synthesized a very thick coating containing nano-SiO2, which was resistant to high temperature, and no cracks appeared at 500°C. Fayna Mamme ri et al. synthesized PMMA-SiO2 nano-coating. Significantly enhance the elasticity and strength of the coating.

Nano-silica is physiologically inert and highly absorbent. It is often used as a carrier in the preparation of bactericides. When nano-SiO2 is used as a carrier, it can absorb antibacterial ions to achieve the purpose of sterilization and antibacterial. It is reported that it can be used in refrigerator shells, computer keyboards, etc. Manufacturing.

Polysilicon (silicon) azane: resin, after curing the resin forms a three-dimensional cross-linked structure, giving the material good mechanical properties, the hardness can be as high as 9H.

Silazane polymer, generally used to prepare ceramic materials

Polysilazane for metal high temperature protection

The high temperature corrosion and oxidation resistance of metals has always been an important topic in the industry and scientific research circles. The SiO2 or SiCN formed by the conversion of polysilazane has excellent corrosion resistance. At the same time, due to the polarity of Si-N in its structure, it is easy to combine with the metal substrate, so it is a good high-temperature anti-corrosion coating material. At present, there are commercial high temperature resistant coating materials using polysilazane as the main raw material, which are mainly used in exhaust pipes, pistons, heat exchangers, etc. of automobiles and trucks.


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