High-purity quartz powder (also known as silica micropowder) is an indispensable inorganic functional material in the modern electronics industry. With exceptional electrical insulation, low thermal expansion, high chemical stability and excellent dielectric properties, it serves as a critical filler and raw material for semiconductor packaging, circuit boards, new energy electronics and optical components.
As a leading supplier of precision silica powder processing equipment with 19 years of engineering expertise, JACAN delivers ultra-pure, contamination-free quartz powder production solutions that meet stringent electronic-grade standards. Our four-step core process — ultra-purification pretreatment, all-ceramic precision milling, precision classification & morphology control, and functional surface modification — enables stable production of high-quality quartz powder for diverse electronic applications.
Core Performance Requirements of Electronic-Grade Quartz Powder
Unlike ordinary industrial quartz powder, electronic-grade products have strict quality thresholds directly tied to device reliability:
- Ultra-low metallic impurities: Transition metals and alkali metals are controlled at ppm levels to avoid ion migration, insulation breakdown and signal interference
- Narrow particle size distribution (PSD): No oversized particles to prevent pinholes, circuit short circuits or uneven filling
- Controllable particle morphology: Optimized roundness to achieve high resin loading while maintaining fluidity
- Surface compatibility: Tailored molecular modification to form strong chemical bonding with polymer matrices
Key Applications in the Electronics Industry
1. Semiconductor Epoxy Molding Compound (EMC)
As the largest-volume application scenario, epoxy molding compound is the core packaging material for integrated circuits (ICs), discrete devices and memory chips. Quartz powder accounts for 70%–90% of EMC by weight and performs multiple irreplaceable functions:
- Matches the thermal expansion coefficient of silicon wafers, reduces thermal stress during packaging and reflow soldering, and prevents chip cracking and interface delamination
- Improves insulation strength and heat dissipation capacity of packaging materials, ensuring long-term stable operation of high-density chips
- Reduces material water absorption and curing shrinkage, enhancing product dimensional accuracy and environmental reliability
- Blocks alpha rays emitted by trace radioactive impurities, avoiding soft errors in high-end memory chips
Advanced semiconductor packaging requires spherical ultra-pure quartz powder with extremely low uranium, thorium and sodium contents. JACAN’s all-ceramic milling and precision classification technology produces spherical silica with high roundness and narrow PSD, supporting high-fill, low-viscosity EMC production for advanced packaging processes.
2. High-Frequency High-Speed Copper Clad Laminate (CCL)
With the popularization of 5G communication, high-performance computing and automotive electronics, PCB substrates demand strict low dielectric constant (Dk) and low dielectric loss (Df) performance.
Filled into epoxy resin, PTFE and other high-performance substrate systems, high-purity quartz powder:
- Reduces the overall dielectric constant and loss tangent of the substrate, minimizing signal delay and transmission loss in high-frequency circuits
- Improves the dimensional stability of PCB boards, reduces thermal warpage, and ensures precise alignment of fine-line circuits
- Enhances mechanical rigidity and chemical corrosion resistance of substrates for long service life
JACAN’s functional surface modification process optimizes the interfacial bonding between quartz powder and resin matrices, making the material ideal for 5G base station PCBs, server motherboards and automotive high-frequency circuit boards.
3. Lithium Battery Safety & Insulation Systems
In new energy electronic systems represented by power lithium batteries, quartz powder plays a critical role in safety protection and structural insulation:
- Battery separator ceramic coating: High-purity quartz ceramic powder coated on polyolefin separators significantly improves high-temperature resistance (no shrinkage above 180°C), effectively preventing internal short circuits caused by thermal runaway
- Battery module potting & thermal interface materials: Filled into adhesives and thermal gels to improve insulation performance, thermal conductivity and aging resistance, ensuring safe operation of battery modules and packs
JACAN’s metal-free precision processing technology ensures ultra-low iron and conductive impurity content in quartz powder, avoiding self-discharge and safety hazards in battery systems. Our solutions are trusted by leading new energy enterprises including CATL and Shanshan Technology.
4. Electronic Potting Adhesives & Protective Encapsulants
For power modules, automotive sensors, optoelectronic devices and industrial control electronics, potting adhesives filled with quartz powder provide reliable insulation, heat dissipation and environmental protection:
- Spherical quartz powder achieves high filling density while maintaining good fluidity of the adhesive system, reducing production viscosity and improving dispensing efficiency
- Reduces curing shrinkage of the adhesive layer, avoids internal stress damage to precision electronic components, and extends service life
- Improves arc resistance and weather resistance of packaging materials, adapting to harsh working conditions such as high temperature, humidity and vibration
5. High-Purity Quartz Components for Semiconductor Manufacturing
Ultra-high-purity quartz powder is the core raw material for manufacturing process consumables in front-end wafer production:
- Quartz crucibles for monocrystalline silicon pulling: Made from high-purity fused quartz powder, they carry polysilicon raw materials in high-temperature crystal growth, requiring ppb-level metal impurity content to avoid contaminating silicon wafers
- Quartz process parts: Quartz boats, diffusion tubes and cleaning tanks for wafer etching and diffusion processes rely on the high temperature resistance, acid corrosion resistance and ultra-clean properties of quartz, making them irreplaceable consumables in semiconductor fabs
Why JACAN Equipment for Electronic-Grade Quartz Powder Production
As China’s premier provider of precision silica powder processing equipment, JACAN powers over 55% of top-tier electronic-grade silica powder manufacturers (statistics as of November 2025). Our solutions deliver unique advantages for electronic material producers:
- Zero secondary contamination: Full high-purity quartz or ceramic linings and grinding media eliminate iron pollution during milling, keeping metallic impurities at ppm levels
- Precision quality control: Multi-stage high-efficiency air classification guarantees narrow PSD and zero oversized particles, eliminating hidden defects in electronic products
- Customizable full-process solutions: From ultra-purification to functional surface modification, we tailor production lines for crystalline silica, spherical silica and fused silica products
- Reliable service guarantee: Equipment delivered within 30–60 days, with on-site installation, professional operator training and 24/7 global technical support to ensure zero production downtime
Quartz powder is a foundational supporting material running through the entire electronics industry chain, from front-end wafer manufacturing and semiconductor packaging to high-frequency circuit boards and new energy electronic systems. The continuous upgrading of electronic products puts forward increasingly high requirements for the purity, particle size control and surface performance of quartz powder.
With nearly 20 years of technical accumulation, 150+ professional R&D engineers and three intelligent manufacturing bases covering 50,000 m², JACAN provides reliable, cost-effective quartz powder processing solutions for global electronic material manufacturers, helping partners produce high-quality electronic-grade quartz powder that meets international advanced standards.
