1. Microsilica powder is a neutral inorganic filler with very stable physical and chemical properties. It does not contain crystal water, does not participate in the curing reaction, and does not affect the reaction mechanism.
2. It has good wettability to various resins, good adsorption performance, easy mixing, and no agglomeration.
3. Microsilica powder has reasonable particle size distribution, strong density, high hardness, and good wear resistance. It can greatly improve the tensile, compressive, impact strength and wear resistance of the cured product, and the abrasion resistance can be increased by 0.5 -2.5 times.
4. It can increase the thermal conductivity, change the adhesiveness and increase the flame retardant performance.
5. It can reduce the exothermic peak temperature of the epoxy resin curing reaction, reduce the linear expansion coefficient of the cured product and the shrinkage rate of the cured product, thereby eliminating internal stress and preventing cracking.
6. Due to the fine particle size and reasonable distribution of microsilica powder, it can effectively reduce and eliminate precipitation and stratification phenomena.
7. Microsilica powder is pure in nature, has low impurity content, and has stable physical and chemical properties, making the cured product have good insulation properties and arc resistance.
8. The chemical composition of microsilica powder is silicon dioxide (SiO2), which is an inert substance and does not react chemically with most acids and alkali. Microsilica powder is evenly distributed and covered on the surface of objects, and has strong corrosion resistance. The cavitation resistance is increased by 3-16 times.
9. Microsilica powder has small packing density: one is between 0.2-0.8, and the other is between 1.0-2.2. As a polymer filling material, it uses less amount than other mineral fillers, has a small loading weight, and saves the amount of polymer, thus reducing product costs.
10. Frost resistance: After 300-500 rapid freezing and thawing cycles of microsilica powder, the relative elastic modulus decreases by 10-20%, while the relative elastic modulus of ordinary concrete decreases by 30-50 times after 25-50 cycles. 73%. Therefore, the frost resistance of concrete can be improved.
