Manufacturing Industry
Automotive polymers resist high heat and humidity.
Advanced Materials & Processes, July, 2000
Polymer technology to improve high-temperature/high-humidity performance for automotive applications has reportedly been developed at GE Plastics, Pittsfield, Mass. Thermoplastic polyesters, nylons, and nylon alloys are traditional choices for primary automotive applications. However, to help support the now-standard ten-year warranty requirement, new tests have been recommended by the Electric Wiring Component Applications Partnership (EWCAP) to improve the materials so that they can withstand higher temperatures and higher humidity for longer periods of time.
Two major sections of the EWCAP test procedure include the 1008-hour heat aging and temperature / humidity cycling. For example, class 4 materials must now be able to withstand ambient temperatures of...
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