Ultra-fine high-purity quartz powder

Ultra-fine high-purity quartz powder

Ultrafine high-purity quartz powder is made from refined natural crystalline quartz sand. It features high purity (SiO2 content over 99%), uniform particle size distribution, high whiteness, high hardness, and low moisture content. These properties enhance the hardness and reinforcement of paint films, partially replace imported titanium dioxide, and reduce production costs.

With its excellent high-temperature resistance, acid and alkali corrosion resistance, as well as good thermal conductivity, high insulation, low expansion, and high hardness, it is one of the indispensable functional fillers in the electrical, electronic, and rubber industries. With the development of the silicon micro-powder industry and the expansion of downstream sectors, high-purity ultra-fine silicon micro-powder has become a focal point in industry development.

2. Our company's product specifications table:

3、Application industries of ultra-fine quartz powder:

Ultra-fine silicon micro-powder, produced through advanced processing of refined silicon powder, features exceptionally fine particles, narrow particle size distribution, high specific surface area, excellent anti-settling properties, and reinforcement effects. It is particularly suitable for various industries including silicone rubber, coatings, paints, precision manufacturing, ceramics, engineering plastics, adhesives, dental materials, precision casting, electronic component polishing, polishing materials, architectural interior/exterior wall coatings, road reflective coatings, and automotive primers.

IV. Chemical Composition and Physical Properties of Ultra-fine Quartz Powder:

Basic characteristics of ultrafine silicon powder:

V. Advantages of Ultra-fine Quartz Powder

1. 1. High purity, neutrality, and chemical inertness provide flexibility for formulation development

2. The low surface area reduces the resin requirement, thus achieving high addition and low viscosity.

3. Natural crystal provides excellent wear resistance and hardness.

4. Excellent particle size distribution, with application of statistical process control to ensure high-quality and stable product performance.

5. It has the characteristics of good machinability, low shrinkage, low thermal expansion, acid and alkali resistance, good solvent insulation and good mechanical properties.

6、Application Analysis of Ultrafine Quartz Powder in Epoxy Mold Compound and Plastic Industry

In epoxy molding compounds, high-purity silicon micropowder serves as the primary raw material. Due to its stable physicochemical properties, excellent light transmittance, linear expansion characteristics, and superior high-temperature performance, SiO2 is currently the most ideal filler for epoxy encapsulation materials, with a filler content of 70%-90%. Additionally, high-purity ultra-fine silicon micropowder is also the optimal substrate material for semiconductor integrated circuits. Globally, the demand for high-purity ultra-fine silicon micropowder is expected to grow rapidly alongside the development of the IC industry, with projections indicating a 20% annual growth rate over the next decade.

High-purity ultra-fine silicon micropowder significantly enhances plastic flexural and compressive strength, while also improving the load-bearing capacity of most plastic products. In rubber applications, it serves as a carbon black substitute, improving elongation, tear strength, and aging resistance. As a coating additive, it markedly boosts wear resistance and coloration performance. The most promising market applications, however, lie in plastic encapsulation materials for large-scale and ultra-large-scale integrated circuits, electronic component packaging, and epoxy resin potting compounds.

7、Application fields of ultra-fine quartz powder:

Through advanced processing techniques, the quartz powder retains its original properties while exhibiting enhanced hydrophobicity. This significantly improves its wettability and affinity in polymers and organic solvents, substantially increases the filling rate, enhances dispersion in organic materials, drastically reduces the viscosity of the mixture system, improves resin flowability, increases the density of castings, and boosts the strength of castings. These improvements meet the stringent waterproofing requirements of resin products and enhance their water resistance.

①　Construction paint and road marking paint: When mixed with TiO2, it enhances the paint's wear resistance, reduces foaming, and effectively controls color.

②　Industrial protective anti-rust paint: It has the functions of acid resistance, heat resistance and anti-rust, and has good chemical safety.

③　Silicone sealing rubber: An additive with excellent semi-reinforcing properties, compatible with various titanium dioxide fillers without compromising their vulcanization.

④　Wires and cables: heat resistance, chemical inertness and cost effectiveness.

⑤　Seam filler: It can be used as a filler in materials such as polyester, epoxy, and urethane, or mixed with rosin-formaldehyde resin.

⑥　Plastics: Used in thermoplastic molding to enhance heat resistance, stability, and reduce costs. When applied to thermosetting plastics, it provides better stability and low expansion rate. It can also be blended with various resins (such as polyester, epoxy) and high-temperature insulating materials.

⑦　Epoxy resin casting: Provides durability without chemical changes, while enhancing physical strength. In the electronics industry, it offers high load-bearing capacity and is suitable for casting IC boards and ignition coils.