| Research on NR Compound Formulas for Automotive Engine Suspension |
| Received:October 17, 2023 Revised:October 17, 2023 |
| DOI：10.12136/j.issn.1000-890X.2024.10.0754 |
| Key Words: automobile engine mounting，NR，dynamic-to-static stiffness ratio，Hot-air aging resistance |
| Author Name | Affiliation | E-mail | | XIAO Yong-ming* | BOGE Rubber & Plastics Zhuzhou Co.,Ltd. | 824097074@qq.com | | LV Xiu-feng | 博戈橡胶塑料株洲有限公司 | | | HU Qi-lin | 博戈橡胶塑料株洲有限公司 | | | GUO Chu-jie | 博戈橡胶塑料株洲有限公司 | |
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| Abstract: |
| Research on the formula of natural rubber（NR） compound for automotive engine suspension. The results showed that the NR compound with semi effective vulcanization system （sulfur/accelerator ratio of 1. 7/1. 5），carbon black N330/carbon black 774/white carbon black （ratio of 11/18/5） reinforcement system，and anti-aging agent 4020/anti-aging agent RD/anti-aging agent MB/microcrystalline paraffin （ratio
of 2/1/1） protection system had lower dynamic and static stiffness and better heat resistance to air aging；excessive vulcanization temperature and time can easily cause NR rubber to undergo vulcanization and return to its original state，resulting in an increase in its dynamic to static stiffness ratio and a decrease in its heat resistance to air aging. |
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