| 硫化温度对天然橡胶/顺丁橡胶/反式丁戊橡胶并用胶性能的影响 |
| Influence of Vulcanization Temperature on Properties of NR/BR/TBIR Blend |
| 投稿时间：2022-07-14 修订日期：2022-07-14 |
| DOI：10.12136/j.issn.1000-890X.2024.01.0019 |
| 中文关键词: 天然橡胶 顺丁橡胶 反式丁戊橡胶 硫化温度 相容性 耐疲劳性能 |
| 英文关键词: NR BR TBIR vulcanization temperature compatibility fatigue resistance |
| 基金项目:国家重点研发计划项目（SQ2022YFB3700063）；山东省重大科技创新工程项目（2021CXGC010901） |
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| 中文摘要: |
| 研究硫化温度对天然橡胶（NR）/顺丁橡胶（BR）/反式丁戊橡胶（TBIR）并用胶（并用比35/45/20）性能的影响，并与NR/BR并用胶（并用比为45/55）进行对比。结果表明：随着硫化温度由140 ℃升至180 ℃，NR/BR和NR/BR/TBIR胶料的硫化曲线平坦性变差，t10和t90明显缩短，交联密度降低；NR/BR和NR/BR/TBIR硫化胶的硬度和定伸应力降低，拉断伸长率提高，撕裂强度变化不大，回弹值略有减小，压缩温升略有升高；在较宽的硫化温度范围内，TBIR可明显改善NR/BR并用胶的相容性和耐疲劳性能。 |
| 英文摘要: |
| The influence of vulcanization temperature on the properties of natural rubber（NR）/cis-
1，4-polybutadiene rubber（BR）/trans-1，4-poly（butadiene-co-isoprene） rubber（TBIR） blend（blend
ratio of 35/45/20） was investigated，and compared with that of NR/BR blend（blend ratio of 45/55）.
The results showed that the flatness of the vulcanization curves of the NR/BR blends and NR/BR/TBIR
blends decreased with the increase of the vulcanization temperature from 140 ℃ to 180 ℃，the t10 and t90
were significantly shortened，and the cross-linking density was reduced. The hardness and tensile stress
at a given elongation of NR/BR blend and NR/BR/TBIR vulcanizates decreased，the elongation at break
increased，the tear strength changed little，the rebound value decreased slightly，and the compression heat
build-up increased slightly. TBIR could improve the compatibility and fatigue resistance of NR/BR blend
significantly over a wide range of vulcanization temperatures. |
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