| Effect of Nanobead Silica Amount on Properties of NR Compound for Air Spring |
| Received:September 17, 2021 Revised:September 17, 2021 |
| DOI：10.12136/j.issn.1000-890X.2023.02.0130 |
| Key Words: nanobead silica；air spring；NR；vulcanization characteristics；flexure resistance；fatigue resistance |
| Author Name | Affiliation | E-mail | | Gao Xinwen* | Zhiheng Vibration Damping Technology Co. ，Ltd | 188063845@163.com | | PEI Shipeng | Zhiheng Vibration Damping Technology Co. ，Ltd | | | ZHENG Lixia | Zhiheng Vibration Damping Technology Co. ，Ltd | |
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| Abstract: |
| The nanobead silica was added to the natural rubber（NR） compound for the air spring，and
the processing properties and physical properties of the NR compound and the fatigue resistance of the air
spring were studied. The results showed that，with the increase of nanobead silica amount，the vulcanization
characteristics and Mooney viscosity of the NR compound did not change significantly，the Shore A hardness
of the NR vulcanizate decreased first and then increased，the tensile stress at 300% elongation did not change
significantly，and the tensile strength and elongation at break both showed a decreasing trend. It was found
that when the nanobead silica amount was 10～15 phr，the flexure resistance of the NR vulcanizate was better.
With the addition of 10 phr nanobead silica in the NR compound for the air spring，the fatigue resistances of
the air spring at room temperature and at high temperature were effectively improved. |
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