Overview
Black TPU (Thermoplastic Polyurethane) is a high-performance elastomer engineered for flexibility, durability, and resistance to oils, abrasion, and extreme temperatures. Its rubber-like elasticity and thermoplastic processability make it ideal for injection molding, extrusion, and 3D printing. The black pigmentation provides UV stability and aesthetic appeal, expanding its use in consumer and industrial markets. TPU is synthesized from diisocyanates, polyols, and chain extenders, with formulations adjusted for hardness (Shore 60A–80A). Unlike vulcanized rubber, TPU can be recycled, aligning with sustainability goals. Its versatility bridges gaps between plastics and rubbers in B2B supply chains.
Physical and Chemical Properties
Black TPU exhibits a density of 1.10–1.25 g/cm³ and melts between 120–200°C, depending on hardness. It maintains elasticity at temperatures as low as -40°C and resists degradation up to 120°C. The material’s tensile strength ranges from 30–60 MPa, with elongation at break exceeding 500% in some grades. Chemically, TPU resists oils, greases, and ozone but may swell in ketones or esters. Its black colorant enhances UV resistance, critical for outdoor applications. Unlike PVC, TPU is phthalate-free, meeting stricter regulatory standards for consumer products.
Main Applications
In automotive industries, black TPU is used for seals, gaskets, and cable sheathing due to its vibration damping and fuel resistance. Footwear brands leverage its abrasion resistance for shoe soles, while electronics manufacturers employ it for protective cases and wearable devices. Industrial applications include hydraulic hoses, conveyor belts, and machinery components requiring flexibility under load. Medical-grade black TPU meets biocompatibility standards for tubing and prosthetics. Its moldability also supports custom parts in aerospace and robotics.
Safety and Storage
Black TPU is generally non-hazardous but requires precautions during high-temperature processing. Ventilation is recommended to avoid inhalation of decomposition fumes (e.g., isocyanates). Finished products pose minimal risk under normal use. Storage should avoid prolonged UV exposure to prevent surface degradation. Keep pellets or sheets in sealed containers at <30°C and <50% humidity. Shelf life typically exceeds 12 months if stored properly. Fire safety measures align with standard plastics (combustible, emits CO when burning).
B2B Procurement Guide
Industrial buyers should specify Shore hardness, tensile strength, and additives (e.g., flame retardants, anti-static agents). Verify compliance with industry standards like ISO 10993 (medical) or SAE J2527 (automotive weathering). Supplier audits are advised to ensure consistent pigmentation and batch-to-batch uniformity. Prices fluctuate with petroleum-based raw material costs; bulk orders (20+ tons) may secure 5–10% discounts. Lead times average 4–8 weeks for custom formulations.
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