Overview
High-temperature resistant modified PC material is a polycarbonate (PC) engineered with additives like glass fibers, flame retardants, or thermal stabilizers to withstand continuous operating temperatures up to 150°C. Unlike standard PC, it maintains mechanical properties under thermal stress, making it ideal for demanding environments. Developed in response to automotive and electronics industry needs, this material combines PC's inherent impact resistance with enhanced thermal performance. Major producers include Covestro, SABIC, and Mitsubishi Engineering-Plastics, offering grades tailored for specific heat resistance levels and regulatory compliance.
Physical and Chemical Properties
The material typically exhibits a heat deflection temperature (HDT) of 130-150°C at 1.82 MPa, significantly higher than standard PC's 130°C. Its tensile strength ranges from 60-100 MPa, with glass-filled variants reaching higher values. Electrical insulation properties remain stable even at elevated temperatures. Chemical resistance includes tolerance to oils, greases, and dilute acids, though prolonged exposure to alkalis or aromatic hydrocarbons should be avoided. UV-stabilized versions are available for outdoor applications. The modification process may reduce transparency but improves dimensional stability under heat.
Main Applications
Automotive applications dominate usage, particularly in under-hood components like sensor housings, connectors, and LED headlight parts where temperatures exceed 100°C. The electronics industry employs it for power supply housings and circuit board insulators. Industrial applications include machinery guards and hot air ducting. Medical grade variants serve sterilizable equipment. Recent innovations include 5G antenna housings requiring both heat resistance and signal transparency. The material often replaces metals or thermosets to reduce weight and enable complex geometries.
Safety and Storage
While generally safe at processing temperatures (260-320°C), adequate ventilation is required to prevent inhalation of decomposition products. Storage should avoid moisture absorption (max 0.02% water content before processing) to prevent hydrolysis during molding. Regulatory compliance often includes UL94 V-0 flame ratings and FDA/EC food contact approvals for specific grades. Material safety data sheets (MSDS) should be consulted for handling guidelines, particularly concerning dust generation during machining operations.
B2B Procurement Guide
Key specifications to request include heat deflection temperature (HDT) at your required load, CTI (Comparative Tracking Index) for electrical applications, and color stability data. Volume discounts typically apply at 1-ton quantities, with lead times of 2-6 weeks for custom formulations. Quality verification should include certificates for RoHS, REACH, and manufacturer-specific testing reports. Consider regional suppliers to reduce logistics costs for bulk orders. Sample testing under actual operating conditions is strongly recommended before large-scale procurement.
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