High Whiteness Aluminum Hydroxide: Key Applications and Benefits
Aluminum hydroxide (Al(OH)₃), a versatile inorganic compound, serves as a critical material across pharmaceuticals, construction, plastics, and more. Its high-whiteness variant—High Whiteness Aluminum Hydroxide—boasts superior purity (>99.6% Al(OH)₃), exceptional brightness (93–97.5% whiteness), and low iron/impurity content, making it indispensable for applications demanding optical excellence and safety compliance.
Performance Advantages
1. Optical & Physical Properties: With a refractive index of 1.57 and ultra-fine particle size (adjustable to 800–325 mesh), it integrates seamlessly into resins and polymers, enhancing surface gloss and reducing viscosity during curing. This enables smoother finishes in artificial marble, acrylic fixtures, and composite materials.
2. Eco-Friendly Flame Retardancy: When exposed to heat (>200°C), it decomposes endothermically, releasing water vapor without toxic gases. This suppresses combustion, reduces smoke, and achieves UL94 V-0 ratings in plastics, rubber, and epoxy resins.
3. Multi-Functional Additive: Beyond flame resistance, it improves mechanical strength in cables, arc resistance in electrical insulation, and abrasion durability in silicones.
Industry-Specific Uses
- Construction Composites: As a primary filler in artificial marble and SMC/BMC molding, it accelerates curing, boosts structural integrity, and delivers UV-stable whiteness for countertops and facade panels.
- Polymers & Coatings: In PVC, epoxy, and polyolefins, it provides halogen-free flame retardancy (40–60% loading) while maintaining fluidity for injection molding. It also enhances ink adhesion and smoothness in premium coated papers.
- Consumer Goods: Serves as a gentle abrasive in toothpaste (replacing calcium carbonate) and a stabilizer in cosmetics. Its chemical inertness ensures compatibility with fluorides and fragrances.
- Specialty Applications: Acts as a catalyst carrier, smoke-suppressant filler for low-voltage cables, and anti-tracking agent in silicone rubber insulators.
Sustainability & Market Trends
High Whiteness Aluminum Hydroxide supports green manufacturing: non-toxic, recyclable, and compliant with REACH/ROHS. Its role in low-smoke, zero-halogen materials aligns with global safety standards for electronics and building materials.
With consistent demand growth (5% YoY in adhesives/sealants alone), this material remains vital for innovations in fire safety, sustainable design, and high-visibility consumer products. Its adaptability across sectors—from medical (acid neutralizers) to ceramics—cements its status as a multifunctional industrial cornerstone.
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