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美国TRW底盘系统公司选AmodelPPA（聚邻苯二酰胺）来造汽车ABS（防抱死刹车系统）一个关键部件。该公司为制造这一关键部件寻求一种能满足高刚度和高强度性能要求的材料。这种树脂材料必须经受从１２５℃空气中到０℃水中，从－４０℃到１２５℃工作温度的热冲击试验。由于该部
US TRW chassis systems company selected AmodelPPA (poly-phthalamide) to build automotive ABS (antilock braking system) a key component. The company sought to create a material that meets the high stiffness and strength requirements of this critical component. This resinous material must be subjected to a thermal shock test from 125 ° C in air to 0 ° C water, operating temperature from -40 ° C to 125 ° C. Due to the ministry