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Silica Precipitation as a Thickening Agent for Paints
Product: silicon dioxide for paiting and coating
Model No.:JS-280C
CAS. NO.: 7631-86-9
Silica precipitation is a widely used method to produce high-quality silicon dioxide. Due to its unique properties, such as high surface area, large specific pore volume, and excellent mechanical properties, silica is used in various industrial applications. One of the most common applications of silica is to act as a thickening agent in paints.
Paints are commonly used to safeguard and enhance the aesthetic appeal of structures, automobiles, and other equipment. In order to achieve good performance, the viscosity of the paint must be high enough to prevent sagging and running but not so high that it is difficult to apply. With the addition of silica, the viscosity of paint can be increased to achieve the necessary thickness, while still maintaining good flow and leveling characteristics.
Silica is ideal as a thickening agent for paints due to its particle size and shape. The smaller particle size of silica ensures that it will spread evenly throughout the paint while maintaining good flow properties. Additionally, the shape of silica particles is beneficial, as it allows for the formation of a network of particles that can hold the paint in place, avoiding sagging or running. Furthermore, the high surface area of silica provides an excellent substrate for bonding with other materials present in the paint.
Using silica as a thickening agent in paints provides several benefits. Firstly, it ensures the paint will stay in place, helping prevent runs and sagging. Secondly, the increased viscosity of the paint ensures it will have good leveling characteristics. Finally, the addition of silica improves the mechanical and chemical properties of the paint, making it more durable and resistant to wear and tear.
Specification:
JS-280
|
Test Methods |
Properties |
Units |
Target Values (Spec Limits) |
Actual Values |
|
HG/T3065-2008 |
Loss on drying (2Hrs,105℃)加热减量 |
% |
Max.5.5 |
4.85 |
|
HG/T3066-2008 |
Ignition loss 1000℃ 灼烧减量 |
% |
Max.7.0 |
3.96 |
|
HG/T3072-2008 |
DBP absorption value DBP吸收值 |
cm3/g |
3.1-3.5 |
3.20 |
|
HG/T3067-2008 |
pH value (10%aqueous suspension) pH值 |
- |
6.0-8.0 |
6.77 |
|
HG/T3062-2008 |
SiO2 (Dry Basis) 二氧化硅(干基) |
% |
Min.98 |
98.1 |
|
HG/T3073-1999 |
BET specific surface area BET比表面积 |
m2/g |
260-300 |
282 |
|
|
Soluble salt (Na2SO4) 可溶性盐 |
% |
Max.0.5 |
0.26 |
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