Overview
Fushun polyurethane board is a rigid foam insulation material derived from polyurethane (PU), a polymer composed of organic units joined by carbamate (urethane) links. It is renowned for its exceptional thermal insulation properties, making it a staple in energy-efficient construction and industrial applications. The board is manufactured through a controlled chemical reaction between polyols and isocyanates, resulting in a lightweight yet durable product. Produced primarily in Fushun, China, these boards are tailored to meet stringent industry standards. They are available in various thicknesses and densities, catering to diverse insulation needs. The material's closed-cell structure minimizes heat transfer, while its moisture resistance enhances longevity in humid environments.
Physical and Chemical Properties
Fushun polyurethane boards exhibit a low thermal conductivity (typically 0.022-0.028 W/m·K), outperforming many traditional insulation materials like polystyrene or fiberglass. Their density ranges from 30 to 50 kg/m³, balancing structural integrity with ease of handling. The boards are chemically stable, resisting degradation from oils, solvents, and mild acids, though prolonged exposure to UV radiation may cause surface deterioration. Fire resistance varies by formulation; some grades incorporate flame retardants to achieve Class B1 or Class B2 fire ratings. The material's closed-cell structure also provides inherent moisture resistance, reducing the risk of mold growth or thermal bridging. However, mechanical properties like compressive strength (150-300 kPa) should be verified for load-bearing applications.
Main Applications
In construction, Fushun polyurethane boards are widely used for wall, roof, and floor insulation in residential and commercial buildings. Their high R-value per inch makes them ideal for space-constrained projects. Cold storage facilities leverage the material's low thermal conductivity to maintain consistent temperatures, reducing energy consumption. Industrial applications include insulation for pipelines, tanks, and refrigeration units. The boards are also employed in transportation (e.g., refrigerated trucks) and HVAC systems. Specialty grades with enhanced fire resistance are specified for projects requiring compliance with stringent safety codes, such as high-rise buildings or industrial plants.
Safety and Storage
Polyurethane boards are generally safe when handled properly, but cutting or sanding may generate dust that irritates the respiratory system. Workers should use PPE such as masks and goggles. The material is non-toxic once cured, though uncured components (isocyanates) require careful handling to avoid skin or eye contact. Storage conditions are critical to maintaining performance. Boards should be kept flat and dry, stacked no higher than recommended to prevent deformation. Avoid exposure to temperatures above 50°C or open flames, as thermal degradation may release harmful gases. Fireproof storage is advised for large quantities.
B2B Procurement Guide
When sourcing Fushun polyurethane boards, prioritize suppliers with ISO or ASTM certifications to ensure quality consistency. Key specifications to confirm include thermal conductivity (λ-value), fire rating, and dimensional stability. Request samples to verify surface finish and density uniformity. Bulk buyers should negotiate MOQs and lead times, as production cycles may vary. Consider logistical factors like palletization and weatherproof packaging for long-distance shipping. For customized orders (e.g., pre-cut sizes or laminated surfaces), provide detailed technical drawings and allow for extended production schedules. Price fluctuations in raw materials like MDI (diphenylmethane diisocyanate) may impact quotations, so lock in contracts during stable market periods.
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