文章摘要
Effect of Vulcanization Process Parameters on Adhesives Properties and Humidity and Heat Aging Resistance of NR Compound Shock-absorbing Bushing for Automobile
Received:December 02, 2020  Revised:December 02, 2020
DOI：10.12136/j.issn.1000-890X.2022.06.0466
Key Words: shock-absorbing bushing；automotive；NR；vulcanization process parameter；adhesive property；maximum destructive force；humidity and heat aging resistance
Author NameAffiliationE-mail
HE Fangke* Jianxin Zhao’s Group Corp. hefangke@126.com 
HU Yuyou Jianxin Zhao’s Group Corp.  
DING Binxuan Jianxin Zhao’s Group Corp.  
LI　Jian Jianxin Zhao’s Group Corp.  
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Abstract:
      The effects of vulcanization process parameters on the adhesive properties and humid heat aging resistance of the natural rubber（NR） compound shock-absorbing bushing for automobile were studied by orthogonal experiments.The results showed that，the shore A hardness of the NR compound increased after the humid heat aging，and the tensile strength and elongation at break decreased.The vulcanization process parameters to achieve the best and stable adhesive properties of the NR compound shock-absorbing bushing were as follows：vulcanization time 600 s，vulcanization temperature 155 ℃，injection pressure 21 MPa.After the humid heat aging under a temperature of 70 ℃ and a relative humidity of 85%～100% for 504 h，the average value of the maximum destructive force of the NR compound shock-absorbing bushing was 22. 74 kN，and the rubber covering percentage after damage was 100%，which met the requirements of the adhesion between the rubber material and metal framework of the NR compound shock-absorbing bushing.
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