文章摘要
Study on Accelerated Aging Test Conditions of EPDM Cushion Blocks of Automobile Engine Cover Based on Hallberg-Peck Model
Received:August 17, 2020  Revised:August 17, 2020
DOI：10.12136/j.issn.1000-890X.2021.06.0459
Key Words: EPDM；cushion block；automobile engine cover；Hallberg-Peck model；accelerated aging test；natural exposure test
Author NameAffiliationE-mail
WANG Weijian* Guangzhou Automobile Group Co.，Ltd wangweijian@gacrnd.com 
CHEN Yanfei Guangzhou Automobile Group Co.，Ltd  
LI Shupeng Guangzhou Automobile Group Co.，Ltd  
LI Bo Guangzhou Automobile Group Co.，Ltd  
YU Yan Guangzhou Automobile Group Co.，Ltd  
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Abstract:
      Based on the Hallberg-Peck model，the accelerated aging test conditions of ethylene-propylene-diene rubber（EPDM） cushion blocks for automobile engine cover were studied.Using the natural exposure test data of the Hainan test site，the laboratory accelerated aging test conditions of the aging failure of EPDM cushion due to the precipitation of white matter（benzothiazole accelerator） were obtained，which was aging under the relative humidity of 95% and temperature of 70 ℃ for 168 h.It was verified that the accelerated aging test results under this condition were accurate.
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