| Effect of Curing Conditions on Static Stiffness and Spring Ratio of NR Foam |
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| DOI： |
| Key Words: NR；foam；curing condition |
| Author Name | Affiliation | | TAN Yu | Zhuzhou Times New Material Technology Co.，Ltd | | HU Qing-hua | Zhuzhou Times New Material Technology Co.，Ltd | | HU Tian-hui | Zhuzhou Times New Material Technology Co.，Ltd | | CHEN Ping | Zhuzhou Times New Material Technology Co.，Ltd | | HUANG Zi-hua | Zhuzhou Times New Material Technology Co.，Ltd |
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| Abstract: |
| The effects of curing temperature，time and pressure on the static stiffness(Ks) and spring ratio(Kd/Ks) of NR foam were investigated.The results showed that，at the first curing stage，as the curing temperature，time and pressure increased，the Ks of NR foam increased；the Kd/Ks increased as the curing temperature increased，decreased as the curing time prolonged，and stayed almost unchanged as the curing pressure increased.At the second curing stage，when the curing temperature and time increased，the Ks and Kd/Ks of NR foam decreased.When the curing pressure increased，the Ks and Kd/Ks increased at first and then decreased.The optimized curing conditions were 115 ℃/10 MPa×15 min and 150 ℃/10 MPa×10 min for the first and second curing stage，respectively.The NR foam prepared at the optimized conditions met the technical requirements of damping plate. |
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