| Study on Hot Air Aging Properties and Aging Mechanism of IIR Damping Materials |
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| DOI： |
| Key Words: IIR；damping materials；hot air aging；aging property；aging mechanism |
| Author Name | Affiliation | | DING Guofang | Institute of Chemical Materials of CAEP | | ZHOU Anwei | Institute of Chemical Materials of CAEP | | SHI Yaogang | Institute of Chemical Materials of CAEP | | LUO Shikai | Institute of Chemical Materials of CAEP |
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| Abstract: |
| The hot aging property and aging mechanism of IIR damping materials were investigated by means of accelerated aging test．The results showed that，the tensile strength of the damping material was increased by 1 MPa under the selected condition 65 ℃×310 d，and the whole damping capacity curve was moved to higher temperature area by 10 ℃，but the effective damping temperature range was basically unchanged.The experimental results were consistent with the simulation results.It could be used to meet the requirements of the equivalent storage condition of 25 ℃×10 a.At the same time，the changes of molecular chain structure and microstructure of damping materials under thermal oxidative aging condition were analyzed by infrared spectrometer and SEM，and the thermal air aging mechanism of IIR damping materials was obtained. |
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