Application of green silicon carbide GC wear-resistant powder in Teflon coatings
The application of green silicon carbide GC wear-resistant powder in Teflon coatings is mainly reflected in the following aspects, which integrates the functions of enhanced wear resistance, improved high-temperature stability and optimized adaptability for special scenarios:
I. Core applications and performance improvement
Wear resistance enhancement
Green silicon carbide GC micropowder has high hardness (Mohs hardness 9.4). Adding it to Teflon coatings can significantly improve the wear resistance of the coating and extend its service life. For example, in kitchenware, chemical equipment and other scenes requiring high wear resistance, green silicon carbide GC1200 mesh micropowder can enhance the surface hardness of the coating and reduce the shedding of the coating caused by friction.
High temperature resistance and thermal stability
Green silicon carbide GC has excellent oxidation resistance and thermal shock resistance, and can withstand the thermal expansion stress of Teflon coatings in high temperature environments. For example, when used as a protective coating for high-temperature industrial equipment, its high temperature resistance ensures that the coating remains structurally stable at 200-260°C.
Chemical corrosion resistance
The chemical inertness of green silicon carbide GC makes it stable in acidic and alkaline environments. After being added to Teflon coatings, it can enhance the resistance of the coating to chemical corrosive media, and is suitable for scenes with high anti-corrosion requirements such as reactors and pipelines.
2. Technical parameters and process adaptability
Particle size and dispersibility
The common mesh size of green silicon carbide GC micropowder is 1200 mesh (D50 is about 9.5±μm). The particle size is concentrated and evenly distributed, which is conducive to uniform dispersion in the coating and avoids coating defects caused by particle agglomeration during spraying.
Production process optimization
The green silicon carbide GC micropowder is treated by acid washing and water washing process, with low impurity content (magnetic content ≤30ppm), better compatibility with Teflon resin, can reduce the amount of dispersant used, and reduce production costs.
3. Application scenarios and cases Kitchenware and household appliances
For Teflon coatings such as non-stick pans and oven baking trays, the wear resistance is improved by adding green silicon carbide GC micropowder, and the anti-scratch life in daily use is extended.
Industrial anti-corrosion and high temperature resistant equipment
In chemical reaction vessels, high temperature pipelines and other equipment, green silicon carbide GC reinforced Teflon coatings can simultaneously meet the requirements of corrosion resistance, wear resistance and high temperature resistance, reducing the frequency of equipment maintenance.
Electronics and precision equipment
The high purity characteristics of green silicon carbide GC (SiC content ≥ 99%) make it suitable for the coating of precision electronic components, such as semiconductor equipment protective layer, taking into account both insulation and wear resistance.
4. Comparison with other materials
Although black silicon carbide has a lower cost, its hardness (Mohs hardness 9.15) and wear resistance are slightly lower than those of green silicon carbide GC, and it is suitable for building materials and other fields that do not require high wear resistance; and green silicon carbide GC is still the first choice for wear-resistant powder in Teflon coatings due to its better overall performance