| 液体聚异戊二烯橡胶对天然橡胶/反式聚异戊二烯橡胶并用胶性能的影响 |
| Effect of LIR on Properties of NR/TPI Blends |
| 投稿时间：2021-04-23 修订日期：2021-04-23 |
| DOI：10.12136/j.issn.1000-890X.2022.09.0659 |
| 中文关键词: 液体聚异戊二烯橡胶 天然橡胶 反式聚异戊二烯橡胶 硫化特性 结晶性 物理性能 动态力学性能 |
| 英文关键词: LIR NR TPI vulcanization characteristics crystallinity physical property dynamic mechanical property |
| 基金项目: |
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| 中文摘要: |
| 研究液体聚异戊二烯橡胶（LIR-50）用量对未填充和填充填料的天然橡胶（NR）/反式聚异戊二烯橡胶（TPI）（并用比85/15）并用胶硫化特性、结晶性、物理性能和动态力学性能的影响。结果表明：NR/TPI并用胶的t10和t90随着LIR-50用量的增大而延长，且加工流动性变好；在NR/TPI并用胶中TPI的结晶受到抑制，LIR-50用量对NR/TPI并用胶的结晶性影响不大；随着LIR-50用量的增大，NR/TPI并用胶的邵尔A型硬度、300%定伸应力、拉伸强度及储能模量减小；加入3份LIR-50的并用胶的撕裂强度最大、综合物理性能较好；LIR-50加入对NR/TPI并用胶的耐磨性能、抗湿滑性能以及滚动阻力基本无影响。 |
| 英文摘要: |
| The effects of the amount of liquid polyisoprene rubber （LIR-50 ） on the vulcanization
characteristics，crystallinity，physical properties and dynamic mechanical properties of the unfilled and filled
NR/TPI（85/15 of blend ratio） blends were studied. The results showed that，the t10 and t90 of the NR/TPI
blends were extended with the increase of the amount of LIR-50，and the processing fluidity became better.
The crystallization of TPI in the NR/TPI blend was inhibited，and the amount of LIR-50 had little effect on
the crystallinity of the NR/TPI blends. With the increase of the amount of LIR-50，the Shore A hardness，
tensile stress at 300% elongation，tensile strength and storage modulus of the NR/TPI blends decreased. The
NR/TPI blends with 3 phr LIR-50 had the largest tear strength and better comprehensive physical properties.
The addition of LIR-50 had little effect on the wear resistance，wet skid resistance and rolling resistance of
the NR/TPI blends. |
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