Silicon Dioxide (SiO2) Nanopowder/Nanoparticles, Purity: 99.5+%, Size: 15 nm, KH570 Coated

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Silicon Dioxide (SiO2) Nanopowder/Nanoparticles

Purity: 99.5+%, Size: 15 nm, KH570 Coated  

Silicon Dioxide (SiO2) Nanopowder is a surface-functionalized, high-purity amorphous silica nanomaterial treated with a premium methacryloxy silane coupling agent (KH570). Characterized by its ultra-fine nanometer scale and exceptional specific surface area, this specialized powder is meticulously engineered to overcome the natural agglomeration tendencies of untreated silica. The reactive methacrylate functional groups on the surface create a powerful chemical bridge, making the nanoparticles highly compatible with organic polymers, monomers, and solvent systems, particularly acrylics, vinyls, and unsaturated polyesters. This surface modification ensures seamless dispersion, lowers system viscosity, and promotes robust covalent bonding at the organic-inorganic interface. Backed by flexible surface-treatment load customization tailored to client specifications, this advanced material acts as a high-performance reinforcer that significantly upgrades the mechanical and optical properties of the host matrix.

Technical Properties

Applications

• UV-Cured Coatings, Acrylic Paints & Inks: Extensively utilized as a high-performance additive in UV-curable coatings, clearcoats, automotive finishes, and radical-polymerized acrylic inks. The methacrylate groups on the KH570-treated silica directly participate in the cross-linking network during radiation curing. This integration drastically improves the final film's scratch resistance, surface hardness, and anti-graffiti properties while maintaining absolute optical clarity and preventing phase separation.
• Unsaturated Polyester & Vinyl Ester Resins: Functions as an advanced reinforcing and thixotropic filler in fiberglass compounds, gel coats, and structural composite matrices. It optimizes complex rheological properties, offering superior anti-sagging and non-slump characteristics during application. Simultaneously, it eliminates micro-voids and enhances inter-laminar shear strength, fracture toughness, and fatigue resistance in heavy-duty composite parts.
• Dental Composites & Precision Polymers: Integrated into professional dental restorative resins, glass ionomers, and high-end medical-grade polymers. The 15 nm spherical base particles provide exceptional packing density, allowing for a smooth surface polish that mirrors natural tooth enamel. The KH570 coating ensures that the silica binds perfectly with the dental resin matrix, substantially reducing polymerization shrinkage and increasing long-term wear resistance.
• Optical Adhesives & Electronic Encapsulants: Applied in high-tech optical adhesives, structural sealants, and electronic potting compounds where moisture barrier properties and structural integrity are critical. By improving interface adhesion, it significantly reduces the thermal expansion coefficient of the composite framework, stabilizing sensitive electronic and photonic components against thermal stresses and harsh environmental aging.