Product Description
Chemical grade silica dioxide, also known as silica gel, is a commonly used additive in water-based coatings. It is a fine
white powder that is made from silicon dioxide, which is derived from natural sources such as quartz or sand.
Silica dioxide is added to water-based coatings for various reasons:
1. Thickening Agent: Silica dioxide acts as a rheology modifier, which means it helps to control the viscosity or thickness
of the coating. This allows for better application and leveling of the coating on the surface.
2. Anti-Settling Agent: Silica dioxide helps to prevent the settling of pigments and other solid particles in the coating. This
ensures that the coating remains homogeneous and maintains its desired properties over time.
3. Matting Agent: Silica dioxide can be used to create a matte or satin finish in water-based coatings. It helps to reduce the
glossiness of the coating by scattering light and creating a more diffused reflection.
4. Anti-blocking Agent: Silica dioxide helps to reduce the tendency of coated surfaces to stick together or block when in contact
with each other. This is particularly important for coatings that will be stacked or stored in close proximity.
When selecting a chemical grade silica dioxide for water-based coatings, it is important to consider its particle size, surface area,
and purity. These properties can affect the performance and effectiveness of the additive in the coating formulation.
Overall, chemical grade silica dioxide is a versatile additive that can enhance the performance and appearance of water-based
coatings. It is commonly used in various industries, including automotive, architectural, and industrial coatings.
Chemical Data
| ItemType | S-813 |
| Content of sio2(dry basis) % |
≥98.0 |
| Porosity ml/g | 1.8-2.0 |
| DOA absorption ml/100g | 260-320 |
| Particle Size(Malvent D50),um | 4.0-5.0 |
| Loss on drying(105℃，2Hrs) | ≤6.0 |
| Ignition loss(1000℃,2Hrs) | ≤10.0 |
| Whiteness | ≥90.0 |
| PH(5% Liquor) | 6-7 |
| Surface Treatment | Special |
Applications:
Water-based Wood Coatings
Water-based Industrial Coatings
Water-based Inks
Water-based Plastic Coatings
Anticorrosion Pigments,
Inkjet Receptive Coating,
Matting Agent
