Low Oil Absorption for High-Performance Sealants
Sealant Silica Powder is a functional filler made from high-purity crystalline quartz. It has very low oil absorption and great chemical inertness. This means it can boost the hardness and strength of the sealant without making it too thick. Many architectural sealant makers have told us our product improved their product's movement capability and aging resistance. This is a direct result of our focus on quality.
Batch Consistency for Uninterrupted Production
Batch-to-batch stability is everything for sealant producers. Our Sealant Silica Powder goes through a strict quality system. From raw material grading to final packaging, every step is monitored. Before shipping, every batch is checked for particle size, oil absorption, and moisture. This keeps performance differences between batches very small. For 25 years, this care for detail has kept our product a trusted choice in the global sealant market.
Complete Technical Specifications
|
Parameter |
Typical Value / Range |
Test Standard |
|
Main Content (SiO₂) |
≥ 98.5% |
Chemical Analysis |
|
Oil Absorption |
18 - 26 g/100g |
Scraper Method |
|
Particle Size (D50) |
5μm - 20μm (Customizable) |
Laser Diffraction |
|
Moisture Content |
≤ 0.30% |
Oven Drying Method |
|
Loss on Ignition |
≤ 0.50% |
High-Temperature Ignition |
|
pH (Water Suspension) |
6.5 - 7.5 |
Potentiometric Method |
|
Residue on 45μm |
≤ 0.02% |
Sieve Analysis |
Versatile Use in Many Sealant Systems
Sealant Silica Powder is widely used in many systems. In building silicone sealants, it gives good reinforcement. It keeps the sealant stable under long outdoor exposure. In automotive polyurethane sealants and glass adhesives, it raises the cohesive strength. It also works well in butyl sealants for insulating glass and in thermally conductive silicone sealants for electronics. We offer custom production services. You can order your target particle size and oil absorption. With a 1-ton minimum order, our Sealant Silica Powder is easy to try and scale up.
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