Overview
Modified Transparent Powder is a high-performance inorganic filler engineered to improve the optical and mechanical properties of polymer-based products. It is derived from natural minerals (e.g., silica or calcium carbonate) and undergoes surface modification to enhance compatibility with resins. The powder is favored in industries requiring transparency without compromising strength or cost-effectiveness. Unlike conventional fillers, modified versions reduce light scattering due to optimized refractive indices. This makes them ideal for applications like clear coatings and films, where clarity is critical. The product is also valued for its sustainability, as it often replaces more expensive raw materials like titanium dioxide.
Physical and Chemical Properties
Modified Transparent Powder exhibits a fine particle size (typically 5-20 microns) and a narrow size distribution, ensuring uniform dispersion in matrices. Its density ranges between 2.6-2.8 g/cm³, and it is chemically inert, resisting reactions with most solvents and resins. The surface modification (e.g., silane or stearic acid treatment) reduces agglomeration and improves wettability in hydrophobic systems. Key metrics like oil absorption (≤30 g/100g) and brightness (≥90%) are critical for quality assessment. The powder’s refractive index (~1.55) closely matches many polymers, minimizing haze.
Main Applications
In coatings, the powder enhances clarity and scratch resistance while reducing VOC content. It is widely used in wood varnishes, automotive clear coats, and UV-curable systems. For plastics, it improves tensile strength and reduces shrinkage in transparent films, packaging, and PVC products. The adhesive industry leverages its low viscosity impact to maintain bond strength without opacity. Ink formulations benefit from its smooth texture and stability. Emerging uses include 3D printing resins and LED encapsulants, where optical performance is paramount.
Safety and Storage
While non-toxic, prolonged inhalation of dust may cause respiratory irritation. Use PPE (masks, goggles) during handling. Store in sealed containers away from humidity to prevent caking. Bulk storage should prioritize ventilation and avoid contamination with acids or alkalis. Spills can be swept up dry; avoid water to prevent slurry formation. Disposal follows general inert solid waste regulations, though local guidelines should always be checked. Suppliers typically provide SDS (Safety Data Sheets) with detailed hazard information.
B2B Procurement Guide
Buyers should prioritize suppliers with ISO certification and batch consistency guarantees. Key specifications to verify include particle size distribution (via laser diffraction), moisture content (<0.5%), and surface treatment type (e.g., hydrophilic vs. hydrophobic). Request samples for compatibility testing with your base materials. Pricing varies by volume; bulk orders (1+ tons) often attract discounts. Lead times depend on customization needs—standard grades are typically ready for shipment within 1-2 weeks. Consider regional logistics to minimize moisture exposure during transit.
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