| TBIR改性NR硫化胶的研究 |
| Modification of NR with Trans-1,4-Poly(butadiene-co-isoprene) Rubber |
| 投稿时间：2017-02-22 修订日期：2017-02-22 |
| DOI： |
| 中文关键词: 反式丁戊橡胶 天然橡胶 高性能轮胎 橡胶减震 动态疲劳性能 滚动阻力 |
| 英文关键词: trans-1,4- poly(butadiene-co-isoprene) rubber nature rubber high performance tire anti-vibration products anti fatigue properties rolling resistance |
| 基金项目:国家973计划，项目编号2015CB654700（2015CB654706），国家自然科学基金（51473083)，山东省重点研发计划（2015GGX102019），泰山学者工程及黄河三角洲学者工程专项经费资助。 |
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| 中文摘要: |
| 研究了两种牌号反式-1,4-丁二烯-异戊二烯共聚橡胶(TBIR)改性天然橡胶(NR),结果表明,10~50份TBIR与NR共混,并用胶焦烧时间(t10)和工艺正硫化时间(t90)略有延长。相比NR硫化胶,NR/TBIR并用硫化胶力学强度保持在较高范围,屈挠疲劳性能大幅度提高,其中NR/TBIR-20=50/50硫化胶一级屈挠疲劳寿命可提高28.6倍,六级屈挠疲劳寿命可提高11.9倍。DMA结果表明,NR与TBIR具有优异的相容性。RPA及DMA 结果均表明NR/TBIR并用硫化胶具有更低的滚动阻力。综合可知,TBIR是一种高性能的合成橡胶新材料,可显著改善NR的综合性能。 |
| 英文摘要: |
| Modification of nature rubber (NR) with two different trans-1,4-poly(butadiene-co-isoprene) copolymer rubbers (TBIR) were studied. It was found that, the scorch time (t10) and the optimum curve time (t90) of the NR/TBIR blends with 10~50 phr TBIR were slightly delayed. The mechanical properties of NR/TBIR vulcanizates were kept at a high level, and the anti-flex fatigue properties of NR/TBIR vulcanizates improved significantly. Compared with NR vulcanizates, the first-grade flex fatigue life of NR/TBIR-20=50/50 vulcanizate increased 28.6 times, and the sixth grade flex fatigue life increased 11.9 times. NR has a better compatibility with TBIR, and the Tg value of NR/TBIR blends decreased based on the DMA tests. The rolling resistance of NR/TBIR blends decreased obviously when compared to NR, which were supported from both the RPA and DMA results. TBIR is a novel synthetic rubber with high performance, which can improve the comprehensive properties of NR. |
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