EN
Precipitated barium sulfate is a fine white inorganic powder made via professional chemical precipitation reaction, different from rough natural barite ore. It features high whiteness, ultra-fine particle size, stable chemical inertness, acid and alkali resistance, low oil absorption and good dispersion. This material is non-toxic, weather-proof, radiation-resistant and non-fading, with pure texture and few impurities. Compared with common mineral fillers, precipitated barium sulfate has uniform particle distribution, better compatibility with resin and pigment, and will not affect original product color and processing performance. It serves as a cost-effective universal functional filler, widely adopted in coatings, rubber, plastics, printing ink, papermaking, petroleum drilling and medical industries. It helps manufacturers improve finished product quality, upgrade surface performance and cut overall raw material production costs.
The coatings and paint industry is the largest consumption field of precipitated barium sulfate. It acts as an extender pigment and high-performance filler for water-based paints, oil-based industrial paints, exterior wall architectural coatings, automotive topcoats and environmental powder coatings. With a moderate refractive index, it boosts paint hiding power and color uniformity, reduces the addition amount of expensive titanium dioxide so as to lower formula cost. It can improve paint film hardness, scratch resistance, anti-aging and ultraviolet resistance, preventing exterior paint from chalking, yellowing and peeling after long-term outdoor exposure. Besides, this filler optimizes paint fluidity, avoids pigment settlement and tank bottom precipitation during storage, enhances coating adhesion on metal, wall and plastic surfaces, and keeps matte and glossy paint surface delicate, flat and long-lasting for daily engineering use.
In rubber and silicone product manufacturing, precipitated barium sulfate is a ideal reinforcing and weighting filler. It fits natural rubber, synthetic rubber and soft silicone materials perfectly. It can increase rubber product density, structural stiffness and wear resistance without weakening rubber elasticity and flexibility. It is commonly added into rubber tires, waterproof rubber strips, hose pipes, rubber floor mats and household silicone accessories. Unlike hard mineral fillers that crack rubber easily, precipitated barium sulfate has soft particle texture, which does not wear rubber processing machines. It also improves rubber acid resistance and weather adaptability, slows down rubber aging deformation, and produces bright-colored light rubber products that traditional carbon black cannot make. It is especially suitable for white and colored rubber parts with high appearance requirements.
Plastic industry relies heavily on precipitated barium sulfate for performance modification. It works as a stable functional filler for PP, PE, PVC and engineering plastic materials. It improves plastic dimensional stability, reduces shrinkage deformation during injection molding and extrusion processing, and raises plastic surface smoothness and gloss. Added into plastic profiles, packaging sheets, electronic plastic shells and plastic pipe fittings, it enhances plastic hardness, corrosion resistance and radiation shielding ability. This filler has good high-temperature tolerance, does not turn yellow during plastic hot processing, and keeps transparent and milky plastic color pure. Moreover, it improves plastic anti-flame performance moderately, reduces burning smoke volume, and replaces pricey modified additives to help plastic factories control material cost steadily in mass production.
Printing ink and cultural paper industries also need high-purity precipitated barium sulfate. For offset printing ink, gravure ink and packaging color ink, it improves ink fineness, color spreadability and abrasion resistance. It prevents printed patterns from fading, peeling and blurring, ensures clear printing texture on paper, plastic film and packaging carton surfaces. For coated art paper, printing paper and kraft paper, it is used as a surface coating filler. It raises paper whiteness, flatness and ink absorption capacity, makes printing text clearer, and improves paper anti-wear performance. It is neutral and non-corrosive, will not damage paper fiber or printing equipment, fitting long-term batch printing and papermaking production demands.
It also owns special practical uses in petroleum exploitation, medical treatment and new material fields. In oil and gas well drilling, high-density precipitated barium sulfate is mixed into drilling mud to increase mud weight, balance underground rock pressure, avoid well collapse and oil blowout, and protect drilling equipment from underground corrosion. In medical diagnosis, food-grade precipitated barium sulfate is safe and water-insoluble, used as X-ray contrast medium for gastrointestinal examination, which helps doctors observe digestive tract conditions clearly without being absorbed by human body. In addition, it is used for ceramic glaze brightening, cosmetic raw material anti-caking and battery chemical auxiliary materials. In conclusion, precipitated barium sulfate is a multi-purpose industrial filler with stable quality, wide compatibility and high cost performance, supporting stable production for various downstream industries worldwide.
