| 低温下低动静刚度天然橡胶胶料的配方研究 |
| Research on Formula of NR Compound with Low Static and Dynamic Stiffness at Low Temperature |
| 投稿时间：2022-10-14 修订日期：2022-10-14 |
| DOI：10.12136/j.issn.1000-890X.2023.08.0596 |
| 中文关键词: 天然橡胶 N-苯基马来酰亚胺 低温结晶 低动静刚度 |
| 英文关键词: NR N-phenyl maleimide imide low temperature crystallization low static and dynamic stiffness |
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| 中文摘要: |
| 对低温下低动静刚度天然橡胶（NR）胶料的配方进行研究。结果表明：N-苯基马来酰亚胺（N-PMI）具有较高
的反应活性，可在混炼或/和硫化时通过加成反应键接到NR分子主链上，降低NR分子链的规整性，从而明显降低NR的低
温结晶性；添加N-PMI的硫黄硫化体系NR胶料和过氧化物硫化体系NR胶料在－40 ℃时的弹性模量和硬度均较低，采用
这两种硫化体系NR胶料的制品在低温下表现出低动静刚度，这两种硫化体系NR胶料的N-PMI最佳用量均为5份。 |
| 英文摘要: |
| The formula of natural rubber（NR） compound with low static and dynamic stiffness at low temperatures was studied.The results showed that N-phenyl maleimide imide（N-PMI） had high reactivity and could be bonded to the main chain of NR molecules through addition reaction during mixing or/and vulcanization which reduced the regularity of NR molecular chain，and thus significantly reduced the low-temperature crystallinity of NR.The NR compounds with N-PMI cured with sulfur vulcanization system or peroxide vulcanization system had low elastic modulus and hardness at －40 ℃.The products using these two NR compounds exhibited low static and dynamic stiffnesses at low temperatures，and the optimal dosage of N-PMI for both NR compounds was 5 phr. |
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