Feature
When selecting a high-transparency silica agent for automotive E paint (presumably, you mean automotive clear coat paint),
it's crucial to prioritize properties that contribute to optical clarity, durability, and overall performance. Here's what to consider:
Optical Clarity: The silica agent should be highly transparent to ensure minimal interference with light transmission, allowing
the clear coat to maintain its transparency and glossiness.
Particle Size and Distribution: Fine particle size and uniform distribution are essential to avoid visible particles or texture in
the clear coat. Smaller particles contribute to better dispersion and smoother coatings.
Surface Modification: Surface-treated silica particles can enhance compatibility with the clear coat resin and improve dispersibility,
adhesion, and durability of the coating. Surface modification may also influence properties such as scratch resistance and surface
smoothness.
UV Stability: The silica agent itself should be UV stable to prevent degradation or discoloration of the clear coat over time when
exposed to sunlight or other UV radiation. UV-stabilized silica particles help maintain the transparency and performance of the
coating.
Chemical Resistance: Ensure that the silica agent provides chemical resistance to the clear coat, protecting against solvents,
fuels, oils, and other environmental contaminants. Chemical resistance enhances the durability and longevity of the coating in
automotive applications.
Scratch and Mar Resistance: Silica agents can enhance the scratch and mar resistance of the clear coat, helping to protect the
underlying paint layer from damage caused by abrasion or impact.
Dispersion Stability: The silica agent should disperse easily and uniformly in the clear coat formulation to achieve consistent
transparency and overall coating performance. Good dispersion stability prevents issues like settling, agglomeration, or uneven
distribution of silica particles in the coating.
Regulatory Compliance: Verify that the silica agent meets relevant regulatory standards and safety requirements for use in
automotive clear coat formulations, particularly concerning chemical composition, toxicity, and environmental impact.
| Item | HF-610D | Brand | SKYSIL |
| Content of SiO2,(dry basis) %≥ | 98 | Carbon Content % | 5.5 |
| Porosity ml/g | 2 | Particle Size(Malvent D50),um | 4.0-5.0 |
| Loss on drying (105℃,2Hrs),% | ≤6.0 | PH | 6.0-7.0 |
| Sulfate Content % | ≤0.2 | DOA Absorption g/100g | 230-280 |
| Electrical Conductivity 4%in water, us/cm | ≤200 | Specific surface area(N2) Multipoint, m2/g | 130 |
Anticorrosion Pigments, Inkjet Receptive Coating, Matting Agent
