High Purity Precipitated Barium Sulfate

Hongjian Chemical's High Purity Precipitated Barium Sulfate adopts a precision synthesis process of "barium carbonate-sulfuric acid method", utilizing a twelve-stage purification process and crystal morphology control technology to create high-end functional powder with international competitiveness.

Key Properties: Nano-grade dispersibility (d50=0.3-0.8μm controllable), laser-grade whiteness (98.5%-99.5%), SEM-grade purity (99.95%-99.99%), blue phase optimization (b-value ≤1.0)

• High-End Automotive Topcoats: Replaces 20%-30% titanium dioxide, simultaneously improves hiding power and distinctness of image (DOI ≥95), paint film gloss ≥95GU.
• Electronic Display Coatings: Used for functional coatings like polarizers, brightness enhancement films, transmittance >91%, haze <1.5%.
• Optical Lens Coatings: Nano-grade product (d50=0.15±0.05μm) for AR/VR lens anti-reflection coatings, adjustable refractive index 1.64-1.68.

• Chip Packaging Materials: Ultra-high purity grade (99.99%) for epoxy molding compounds, alpha ray emission <0.01 count/cm²*h, thermal conductivity >1.2 W/m*K.
• Circuit Board Inks: Special grade for photoresist solder masks, UV transmittance >98%, line resolution up to 25μm.
• Battery Separator Coatings: Nano-spinning grade product for ceramic separator coatings, thermal shrinkage (130°C) <1%.

• Optical Grade Engineering Plastics: For PC/PMMA alloys, transmittance retention >98%, yellow index change <0.3.
• Medical Polymers: USP/EP dual certification grade, biocompatibility test passes ISO10993 standard, used for medical catheters, implant devices.
• Transparent Masterbatch: Replaces glass microspheres in transparent PP/PS products, haze increase <3%, tensile strength improvement 15%.

• Standard Whiteness Panels: NIST traceable reference material, whiteness value 99.5%±0.2%, for colorimeter calibration.
• Electron Microscope Standards: Monodisperse spherical product, particle size deviation <3%, for SEM/TEM instrument calibration.
• Analytical Reagents: Ultra-high purity grade for ICP-MS, total 67 metal impurities <1 ppm.

• Laser Particle Size Analysis: Malvern Mastersizer 3000, detection range 0.01-3500μm
• Whiteness Measurement: BYK Gardner spectro-guide, d/8 geometry, includes UV component
• Trace Elements: Agilent ICP-MS 7900, detection limit reaches ppt level
• Morphology Analysis: FEI SEM, resolution 1.2nm

• Cubic Crystal System Control: Aspect ratio 1.0-1.2, improves packing density and flowability
• Spheroidization Treatment: Sphericity >0.95, reduces system viscosity
• Surface Microstructure Control: Nano-scale surface roughness <5nm, optimizes light scattering performance

• Silane Grafting Technology: Functional group grafting rate >85%, contact angle with organic phase <30°
• Plasma Treatment: Surface energy adjustment range 35-65 mN/m
• Biomimetic Modification: Phospholipid bilayer modification, biocompatibility improved 3 times

• Fully Automatic pH Precision Control: Fluctuation range ±0.05
• Online Laser Particle Size Monitoring: Real-time feedback to adjust crystallization parameters
• AI Optimization System: Predicts product performance based on machine learning

• Free Sample Testing: Provides 500g customized samples and application evaluation reports
• Joint Development Projects: Co-build product development platforms with customers, share technical achievements
• Simulation Services: Simulates filler distribution in systems via Materials Studio

• Regularly holds "High-End Filler Application Technology Seminars"
• Provides online technical course "Applications of Barium Sulfate in Advanced Materials"
• Compiles "High Purity Barium Sulfate Application Technology Guide" series manuals

• ISO 17025 certified laboratory
• Each batch provides 26-item full indicator test report
• Establishes product lifecycle traceability system