SiO2
|
Appearance |
Purity(%) |
Particle Size(nm) |
SSA(m2/g) |
Application |
|
White powder |
99.5 |
15 |
250-600 |
Small particle size, high content, large specific surface area and high transparency |
|
White powder |
99.5 |
20 |
300-400 |
With nano titanium dioxide as the crystal core, it has the advantages of wear resistance, good dispersion, low viscosity and constant consistency |
|
White powder |
99.5 |
30 |
250-400 |
Good dispersion, high stability and thixotropy |
|
White powder |
99.5 |
30 |
150-300 |
Good dispersion, high stability and thixotropy |
|
White powder |
99.5 |
50 |
150-300 |
Good dispersion, improve the scrub resistance, hardness, weather resistance, self-cleaning, antibacterial and so on |
performance
1. Silica has high purity, small particle size, uniform distribution, large specific surface area, high surface activity, high temperature resistance and low bulk density;
2. Silica has good dispersibility, suspension, vibration liquefaction, thixotropy, reinforcing and thickening effect, and has better hydrophilicity and lipophilicity after surface treatment;
3. There are a large number of unsaturated residual bonds and hydroxyl groups in different bonding states on the surface, which deviates from the stable silica structure due to the lack of oxygen on the surface, so it has high reactivity, low bulk density and easy to disperse;
4. It has high reflection characteristics to UV and visible light. The reflectivity to ultraviolet short wave (200 ~ 280nm) is 70% ~ 80%; to ultraviolet medium and long wave (280 ~ 400nm) is 80% ~ 85%; to visible light (400 ~ 800nm) it is more than 85%; to 800 ~ 1350 band near-infrared ray reflectivity is also more than 70%.
application
1. Rubber modification, sealant ceramic toughening, binder modification, functional fiber additive, plastic modification, anti paint aging additive;
2. Ceramic, nano ceramic and composite ceramic substrate;
3. polymer: it can increase the thermal stability and anti-aging property of polymer.
4. Flame retardant materials, coatings, advanced grinding media, cosmetics and other products;
5. The toughness, strength, elongation, bending resistance, UV aging and thermal aging resistance of color rubber products produced by adding a small amount of Nano-SiO2 into solution polymerized styrene and chlorinated polyethylene can reach or exceed EPDM rubber;
6. after adding a small amount of nano silica to the traditional coatings, the problems of poor suspension stability, poor thixotropy, poor aging resistance and poor smoothness have been solved.
