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| EPDM吊耳的动静刚度比影响因素分析 |
| Analysis of Influencing Factors of Dynamic and Static Stiffness Ratio of EPDM Lifting Lug |
| Received:October 08, 2022 Revised:October 08, 2022 |
| DOI：10.12137/j.issn.2095-5448.2023.12.0589 |
| 中文关键词: 三元乙丙橡胶 补强体系 硫化体系 含胶率 交联密度 动静刚度比 静刚度 动刚度 |
| 英文关键词: EPDM reinforcing system curing system rubber content crosslinking density dynamic and static stiffness ratio static stiffness dynamic stiffness |
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| 中文摘要: |
| 研究硫化体系、补强体系、含胶率和交联密度对三元乙丙橡胶（EPDM）吊耳动静刚度比的影响。结果表明：在硬度相同的情况下，配方含胶率越高，EPDM吊耳在180～300 Hz频率区间内的动刚度越大；100%定伸应力越小，在0～100 Hz频率区间内的动静刚度比越小；适当调整过氧化物硫化剂和助交联剂用量，平衡EPDM胶料的交联密度，可以获得合适的动静刚度比。 |
| 英文摘要: |
| The effects of curing system，reinforcing system，rubber content and crosslinking density on the dynamic and static stiffness ratio of EPDM lifting lug were studied.The results showed that，when the hardness was the same，the higher the rubber content of the formula，the larger the dynamic stiffness of EPDM lifting lug in the frequency range of 180～300 Hz.The lower the modulus at 100% elongation，the smaller the dynamic and static stiffness ratio within the frequency range of 0～100 Hz.By adjusting the dosage of peroxide vulcanizing agent and co-crosslinking agent appropriately to balance the crosslinking density of EPDM compound，a suitable dynamic and static stiffness ratio could be obtained. |
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