| NR原位改性炭黑对NR胶料性能的影响 |
| Influence of in-situ modification of carbon black on the properties of NR compounds |
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| DOI： |
| 中文关键词: NR 炭黑 结合橡胶 交联密度 原位改性 |
| 英文关键词: NR carbon black bound rubber cross-linking density in-situ modification |
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| 中文摘要: |
| 分别采用高温转矩流变仪和常温两辊开炼机制备NR原位改性炭黑（GCB）和NR/炭黑共混物（KCB），并制备GCB/NR和KCB/NR硫化胶，对其性能进行研究。结果表明，与KCB相比，GCB的耐热性能提高，结合橡胶质量分数增大；当炭黑用量相同时，与KCB/NR硫化胶相比，GCB/NR硫化胶的交联密度、定伸应力、压缩永久变形和储能模量较大，拉伸强度和回弹值较小；当炭黑用量小于60份时，GCB/NR硫化胶耐疲劳性能优于KCB/NR硫化胶。 |
| 英文摘要: |
| The carbon black was in-situ modified by NR at high temperature by using rheomix mixer to prepare GCB，and NR/carbon black blend(KCB) was prepared by using two-roll mill at room temperature.The GCB/NR and KCB/NR vulcanizates were prepared，and their properties were investigated.The results showed that，the thermal stability of GCB was better and its bound rubber content was higher when compared with KCB；the cross-linking density，modulus，compression set and storage modulus of GCB/NR vulcanizates were higher，and tensile strength and resilience were lower when compared with KCB/NR vulcanizates at the same addition level of carbon black；the fatigue resistance of GCB/NR vulcanizates were better than that of KCB/NR vulcanizates when the addition level of carbon black was less than 60 phr. |
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