Modified Fused Silica Powder High Purity (≥ 99%)

Product Overview

Modified fused silica powder is a spherical silicon dioxide powder produced through high-temperature melting technology, followed by surface modification. It features ultra-high purity (≥99%), controllable particle size distribution (D50 0.5μm-50μm, customizable), low thermal expansion coefficient, and excellent dispersibility. Widely used in electronic packaging, polymer composites, specialty coatings, and other fields, it significantly enhances mechanical strength and thermal stability.

Key Parameters

Product Advantages

High Purity & Precision - Purity ≥99%, extremely low impurities, meeting electronic-grade material requirements.
Precise Particle Size - Strictly controlled by laser particle size analyzer, customizable in the range of 0.5-50μm.
Modification Technology - Surface-active groups enhance interfacial bonding with resins/plastics.
Stable Performance - Low thermal expansion coefficient (0.5×10^-6/ºC), excellent compatibility with plastics.
Eco-Friendly & Safe - Compliant with RoHS/REACH, free of radioactive substances.

Typical Applications

• Electronic Encapsulation: Filler for epoxy/silicone encapsulants, reducing CTE.

• Composite Materials: Reinforcement for nylon/PP/PBT engineering plastics, improving heat resistance.

• Specialty Coatings: Functional filler for wear-resistant/anti-corrosion coatings, enhancing hardness.

• Adhesives: Improves rheological properties of silicone rubber, reducing sedimentation.

• Advanced Ceramics: Sintering aid for alumina/silicon nitride ceramics.

Packaging & Storage

• 25kg/bag (moisture-proof composite bag), customizable.

• Non-hazardous, store in a dry, ventilated environment.

• Avoid contact with strong acids/bases.

Technical Support

Provides particle size distribution charts/SEM images/MSDS and other test reports.
Supports custom surface modification solutions based on customer samples.
Professional team offers material application solutions.