Electrophoretic Coating Kaolin in Shanxi Hengyuan High Purity for Coating Applications

‌Product Overview‌

Shanxi Hengyuan Electrophoretic Coating Kaolin is a premium-grade, ultra-refined kaolin clay meticulously engineered to meet the exacting demands of electrophoretic deposition (EPD) processes. With a purity level exceeding 99.5% and a controlled particle size distribution (D50: 2–4 μm), this specialized kaolin is designed to enhance coating uniformity, corrosion resistance, and adhesion in cathodic or anodic electrocoating systems. Ideal for automotive primers, electronic component coatings, and industrial machinery finishes, Hengyuan’s kaolin ensures exceptional dispersion stability, low conductivity, and compatibility with epoxy, acrylic, and polyurethane resin systems.

Processed via advanced beneficiation and surface modification technologies, this kaolin grade minimizes defects such as cratering, pinholes, and uneven film thickness while optimizing deposition efficiency. Its low ionic impurity profile (Na⁺, K⁺ <50 ppm) and tailored zeta potential (-35 to -45 mV) make it indispensable for high-voltage EPD applications requiring precision and repeatability. Backed by ISO 9001 and IATF 16949 certifications, Shanxi Hengyuan delivers a sustainable, high-performance solution for manufacturers prioritizing coating quality, process efficiency, and compliance with global environmental standards.

‌Key Features & Advantages‌

1. ‌Ultra-High Purity & Consistency‌

   • ‌SiO₂/Al₂O₃ Ratio: 1.8–2.2‌ – Minimizes interference with resin crosslinking and ensures stable bath conductivity.
   • ‌Ionic Impurities <100 ppm‌ – Precludes electrolysis-induced coating defects in high-voltage EPD systems.
   • ‌Brightness ≥92% ISO‌ – Critical for light-colored automotive primers and electronic coatings.

2. ‌Optimized Electrophoretic Performance‌

   • ‌Controlled Zeta Potential (-35 to -45 mV)‌ – Enhances particle mobility and deposition uniformity across complex geometries.
   • ‌Low Conductivity (<50 μS/cm)‌ – Reduces energy consumption and improves throw power in recessed areas.
   • ‌High Surface Area (20–25 m²/g)‌ – Maximizes resin adsorption for improved film density and adhesion.

3. ‌Enhanced Coating Durability‌

   • ‌Salt Spray Resistance (1,000+ hours)‌ – Meets ASTM B117 standards for automotive and marine applications.
   • ‌Thermal Stability (Up to 220°C)‌ – Withstands curing ovens without cracking or yellowing.
   • ‌Flexural Strength ≥15 MPa‌ – Resists chipping and abrasion in industrial equipment coatings.

4. ‌Sustainability & Compliance‌

   • ‌Zero VOC, REACH & RoHS Compliant‌ – Safe for eco-label-certified coatings (e.g., EU Ecolabel, Blue Angel).
   • ‌Closed-Loop Water Recycling‌ – Aligns with ISO 14001 environmental management standards.
   • ‌Reduced Bath Contamination‌ – Extends EPD bath life by 30–50%, lowering waste disposal costs.

‌Applications‌

Hengyuan Electrophoretic Coating Kaolin is a cornerstone material for industries requiring defect-free, high-performance coatings:

‌1. Automotive & Transportation‌

• ‌Cathodic Electroprimers‌ – Corrosion-resistant underbody coatings for cars, trucks, and rail components.
• ‌Aluminum Wheel Coatings‌ – Uniform, glossy finishes with UV and road salt resistance.
• ‌EV Battery Casings‌ – Dielectric coatings for thermal management and EMI shielding.

‌2. Electronics & Electrical‌

• ‌PCB Coatings‌ – Insulating layers for circuit boards, connectors, and heat sinks.
• ‌Motor Windings‌ – Enhances dielectric strength and thermal conductivity in electric motors.
• ‌Semiconductor Components‌ – Anti-static coatings for wafer handling equipment.

‌3. Industrial Machinery & Appliances‌

• ‌Agricultural Equipment‌ – Abrasion-resistant coatings for harvesters and plows.
• ‌White Goods (Refrigerators, Washers)‌ – Scratch-resistant, aesthetically uniform finishes.
• ‌Hydraulic Systems‌ – Anti-corrosion coatings for pistons and valves.

‌4. Aerospace & Defense‌

• ‌Aircraft Components‌ – Lightweight, fire-retardant coatings for engine parts and fuselage.
• ‌Military Hardware‌ – Chemical-resistant finishes for armored vehicles and naval equipment.

‌Technical Specifications‌

‌Production Process‌

Hengyuan’s kaolin is refined through a proprietary 8-stage process to meet electrophoretic coating standards:

1. ‌Ore Selection‌ – Mined from low-iron, high-alumina deposits in Shanxi Province.
2. ‌Hydraulic Classification‌ – Removes coarse particles (>10 μm) via hydrocyclones.
3. ‌Magnetic Separation‌ – Reduces Fe₂O₃ content to <0.2% using high-gradient magnets.
4. ‌Delamination‌ – Ultrasonic treatment to achieve nano-scale platelet dispersion.
5. ‌Surface Modification‌ – Silane coupling agents optimize resin compatibility.
6. ‌Spray Drying‌ – Low-temperature drying preserves particle structure and surface area.
7. ‌Quality Control‌ – Real-time SEM-EDS analysis for particle morphology and purity.
8. ‌Batch Homogenization‌ – Ensures ±2% consistency in zeta potential and conductivity.

‌Processing Guidelines‌

• ‌EPD Bath Preparation:‌
  • Disperse kaolin at 5–15% wt. in deionized water with <10 μS/cm conductivity.
  • Add dispersants (e.g., polycarboxylates) and mix at 1,500–2,000 rpm for 30 minutes.
  • Adjust pH to 5.5–6.5 using organic acids (e.g., acetic acid) for cathodic systems.
• ‌Deposition Parameters:‌
  • Voltage: 100–300 V (cathodic) / 50–200 V (anodic).
  • Bath Temperature: 25–35°C.
  • Deposition Time: 2–5 minutes (varies with film thickness requirements).
• ‌Post-Coating Curing:‌
  • Bake at 160–220°C for 20–40 minutes, depending on resin system.

‌Packaging & Storage‌

• ‌Packaging:‌ 25 kg multi-layer anti-static bags with moisture-proof aluminum liners.
• ‌Bulk Options:‌ 500 kg FIBCs with desiccant packs for humidity-sensitive regions.
• ‌Storage:‌ Keep in a dry, ventilated area at 10–30°C; shelf life 24 months.
• ‌Transportation:‌ Non-hazardous classification; complies with IMDG/IATA regulations.

‌Why Choose Shanxi Hengyuan?‌

1. ‌Industry-Specific Expertise‌

   • Over 20 years of kaolin R&D focused on electrophoretic and advanced coating technologies.
   • Custom formulations for specific voltage ranges, resin types, or substrate materials.

2. ‌Quality Assurance‌

   • IATF 16949-certified production for automotive-grade reliability.
   • Batch-specific CoA with traceability from mine to final product.

3. ‌Technical Support‌

   • On-site EPD process optimization and defect troubleshooting.
   • Joint development programs for novel coating applications.

4. ‌Sustainability Commitment‌

   • Carbon-neutral production via solar-powered drying facilities.
   • Zero-waste mining with land rehabilitation partnerships.

TDD-Global.com is a professional China chemical B2B marketplace operated by IBI Company, dedicated to promoting global communication, business negotiation, and market expansion in the chemical industry. With a strong network of China chemical product suppliers and international buyers, TDD-Global creates a dynamic and efficient platform for sourcing, trading, and cooperation.

Under the brand name TUDUODUO, TDD-Global has built a trusted reputation among suppliers and buyers in sectors such as fine chemicals, raw materials, industrial additives, and advanced chemical solutions. We offer a wide range of services including product listing, online promotion, supply chain solutions, and international marketing support.

Our platform connects hundreds of verified China chemical suppliers with buyers worldwide, fostering transparent transactions, better business opportunities, and high-value partnerships. Whether you are looking for bulk commodities, specialty chemicals, or customized procurement services, TDD-Global is your go-to platform.

Driven by the innovative spirit of IBI Company, we are committed to building a smarter, faster, and more reliable global chemical trade ecosystem.

If you are interested in cooperation, strategic partnerships, or customized chemical sourcing, please feel free to contact us. Let's shape the future of the chemical industry together!