Market application of silica powder

Release date: 2023-08-04

Microsilica powder is a powder made of crystalline quartz, fused silica, etc. as raw materials, and processed by a microsilica powder mill, precision grading, and impurity removal. Silica powder products have excellent properties such as high heat resistance, high insulation, low linear expansion coefficient and good thermal conductivity, and are an inorganic non-metallic material with excellent performance. Guilin Hongcheng, as a manufacturer of microsilica powder grinding mills, will introduce you to the market application of microsilica powder today.

Market application of silica powder-Raymond mill hc1300

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Microsilica powder can be widely used in copper clad laminates for electronic circuits, epoxy molding compounds for chip packaging, electrical insulation materials, adhesives, ceramics, coatings and other fields. From the perspective of the proportion of downstream applications, building materials are the most widely used fields of microsilica powder, and the application proportions of advanced building materials and coatings can reach 55.1% and 21.7%, respectively, but the overall quality requirements for microsilica powder are not high. Although the application of copper clad laminates and epoxy molding compounds accounted for only about 20% of the total, their terminal application fields have higher requirements on the quality and performance of silicon micropowder, and strong technical barriers, which are key demand areas for silicon micropowder.

1. Copper Clad Laminate: Microsilica powder can be used as an inorganic filler in copper clad laminates. At present, microsilica powder used in copper clad laminates can be divided into crystalline silica powder, fused silica powder, spherical silica powder and composite silica powder. As a filler for copper clad laminates, crystalline silica powder can be used in industries with lower production requirements, the price is lower, and it can improve the thermal stability, stiffness, thermal expansion coefficient and other aspects of copper clad laminates. Therefore, in practical applications It is more common to use high-purity crystalline silica powder in the process.

2. Epoxy molding compound: Epoxy molding compound is the key material used to package chips, and the type and dosage of filler affect the heat dissipation performance of the molding compound. Silica powder is the main functional filler of epoxy molding compounds, accounting for more than 90% of all fillers. As a filler, it can significantly reduce the linear expansion coefficient of epoxy molding compounds, and its expansion performance is close to that of monocrystalline silicon, which can greatly improve the performance of electronic products. reliability. Generally, the low-end epoxy molding compounds use angular silica powder, while the high-end epoxy molding compounds mainly use spherical silica powder, and spherical silica powder is conducive to improving flow performance and increasing the amount of filler, which can reduce the coefficient of thermal expansion. Reduce wear and tear on equipment and molds.

3. Rubber: Rubber is a highly elastic polymer material with reversible deformation, which can be widely used in many fields such as electronics, automobiles, civil engineering, national defense, medical and health, and daily necessities. In the rubber preparation process, adding a certain amount of inorganic fillers can not only reduce the production cost of rubber, but also significantly improve the comprehensive physical properties and dynamic mechanical properties of rubber composites. Microsilica powder has the advantages of small particle size, large specific surface area, good heat resistance and wear resistance, etc. It can be used as a filler to improve the wear resistance, tensile strength and modulus, and high tear performance of rubber composite materials.

4. Plastics: Silica powder can be used as a filler in polyethylene, polyvinyl chloride, polypropylene, polyphenylene ether and other materials in the process of making plastics. Widely used in many fields such as construction, automobile, electronic communication, insulation material, agriculture, daily necessities, national defense and military industry.

5. Coatings: Microsilica powder can be used as a filler in the coatings industry. It can not only reduce the cost of preparing coatings, but also improve the properties of coatings such as high temperature resistance, acid and alkali resistance, abrasion resistance, and weather resistance. It can be widely used in building materials, automobiles, etc. , pipes, hardware, household appliances and other fields.

6. Electrical insulating material: Electrical insulating material is a composite material that insulates electrical components and between components and the ground. It is widely used in power transmission, rail transit, aerospace, wind energy, nuclear energy and other electrical fields. In the process of using insulating materials in different industries, there are certain requirements for their heat resistance, insulation and corrosion resistance. Using silica powder as a filler to prepare insulating materials can effectively improve their mechanical and electrical properties.

The silica powder mills produced by Guilin Hongcheng mainly include Raymond mills, ultra-fine vertical mills and other models. Among them, Raymond mill is mainly used to produce building material grade silica powder. Because the building material industry does not have high requirements for the quality of microsilica powder, the general fineness is about 120-325 mesh, which is in line with the processing range of Raymond mill. The ultra-fine vertical mill is used in the processing of micro-silica powder in higher-precision industries, such as coatings, plastics and other industries, and can process 3-45μm ultra-fine micro-silica powder. If you have demand for microsilica powder production, please leave us a message to learn more about the equipment.

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