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Low-Hardness Soft Composite Silica Micro Powder

Low-Hardness Soft Composite Silica Micro Powder is a high-performance inorganic non-metallic powder material, synthesized by combining silica micro-powder with polymer materials through a specialized process. With its unique low hardness, high flexibility, and excellent dispersibility, it is widely used in coatings, rubber, plastics, electronic packaging materials, and precision ceramics, significantly enhancing processing efficiency and end-product performance.

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Product Description

Low-Hardness Soft Composite Silica Micro Powder is a high-performance inorganic non-metallic powder material, synthesized by combining silica micro-powder with polymer materials through a specialized process. With its unique low hardness, high flexibility, and excellent dispersibility, it is widely used in coatings, rubber, plastics, electronic packaging materials, and precision ceramics, significantly enhancing processing efficiency and end-product performance.

Applications

Coatings/Inks: Enhances wear resistance, anti-settling, and leveling.
Polymers: Improves impact resistance and surface finish of plastics/rubber.
Electronics: Reduces thermal expansion in chip encapsulation adhesives.
Cosmetics: Gentle exfoliant alternative to high-hardness particles.

Advantages

Reduces energy consumption and extends equipment lifespan.
Enhances flexibility and crack resistance of final products.
Compatible with multiple processes (extrusion, injection molding, spraying).

Project	Unit	Typical values
Appearance	/	White powder
Density	kg/m3	2.59×103
Mohs hardness	/	five
Dielectric constant	/	5.0（1MHz）
Dielectric loss	/	0.003（1MHz）
Linear expansion coefficient	1/K	3.8×10-6

Soft composite silicon micro powder can be classified into specifications and matched according to customer requirements based on the following characteristics:

Project	Related indicators	Explain
Chemical Composition	SiO2 content, etc	Having a stable chemical composition to ensure consistent performance
Ion Impurity	Na+, Cl -, etc	Can be as low as 5ppm or below
Particle Size Distribution	D50	D50=0.5-10 µ m optional
Particle Size Distribution	Particle size distribution	Adjustments can be made based on typical distributions as required, including multimodal distributions, narrow distributions, etc
Surface Characteristics	Hydrophobicity, oil absorption value, etc	Different functional treatment agents can be selected according to customer requirements