Textile Coating Hexagonal Stone Powder
Overview
Hexagonal Boron Nitride (h-BN) powder, often referred to as 'white graphite,' is a synthetic ceramic material with a layered structure similar to graphite. It is chemically inert, thermally stable, and exhibits exceptional lubricity and thermal conductivity. In textile applications, h-BN is used as a functional coating additive to enhance fabric performance under high temperatures or friction. Unlike traditional graphite, h-BN is electrically insulating, making it suitable for applications where conductivity is undesirable. Its white color and non-toxic nature also allow for use in cosmetics and medical textiles. The powder is typically synthesized through high-temperature processes involving boron and nitrogen precursors.
Physical and Chemical Properties
h-BN powder is characterized by its high thermal conductivity (comparable to metals) and low coefficient of friction, which make it ideal for reducing wear in textile machinery coatings. It remains stable in air up to 1000°C and resists oxidation, unlike graphite. Chemically, h-BN is inert to most acids, alkalis, and organic solvents, ensuring durability in harsh environments. Its layered structure allows for easy shear, providing lubricity even under extreme pressures. The powder is also hydrophobic, preventing moisture absorption in textile coatings.
Main Applications
In the textile industry, h-BN powder is primarily used as a coating additive for synthetic fibers (e.g., aramid, carbon fiber) to improve heat dissipation and reduce friction during weaving or knitting. It is also applied to protective garments for firefighters or industrial workers, where thermal resistance is critical. Beyond textiles, h-BN serves as a release agent in composite molding, a filler in thermally conductive plastics, and a lubricant in high-temperature machinery. Its electrical insulation properties are leveraged in electronics packaging and heat sinks.
Safety and Storage
While h-BN is non-toxic and non-flammable, prolonged inhalation of its fine powder may cause respiratory irritation. Use personal protective equipment (PPE) such as masks and gloves during handling. Storage should be in sealed containers away from moisture to prevent clumping. Disposal follows general industrial waste guidelines, though recycling is preferred due to its high value. Spills can be swept up without chemical treatment, but avoid creating airborne dust.
B2B Procurement Guide
When sourcing h-BN powder for textile coatings, prioritize suppliers with ISO certifications and batch-specific purity analysis (≥98%). Particle size should align with application needs: finer powders (1–5 µm) for uniform coatings, while coarser grades (5–10 µm) suit thicker layers. Pricing varies with purity and volume, with bulk orders (100+ kg) often discounted. Request samples to test compatibility with your coating formulations. Logistics should ensure moisture-proof packaging to maintain product integrity.
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