| 液体3，4-聚异戊二烯橡胶对天然橡胶/丁苯橡胶复合材料阻尼性能的影响 |
| Effect of 3，4-LIR on Damping Properties of NR/SBR Composites |
| 投稿时间：2024-04-10 修订日期：2024-04-10 |
| DOI：10.12136/j.issn.1000-890X.2026.04.0265 |
| 中文关键词: 液体3，4-聚异戊二烯橡胶 天然橡胶 丁苯橡胶 复合材料 阻尼性能 |
| 英文关键词: 3,4-LIR NR SBR composite damping property |
| 基金项目: |
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| 中文摘要: |
| 通过阴离子聚合制得液体3，4-聚异戊二烯橡胶（3，4-LIR），采用核磁共振氢谱和凝胶渗透色谱对3，4-LIR进行微观结构表征，并将3，4-LIR加入天然橡胶（NR）/丁苯橡胶（SBR）复合材料中，研究其对复合材料阻尼性能等的影响。结果表明：制得的3，4-LIR中3，4-结构含量为66.65%；随着3，4-LIR用量的增大，NR/SBR复合材料的交联密度减小，阻尼性能提升，物理性能有所下降，3，4-LIR用量为20份时复合材料的有效阻尼温域拓宽至－46.1～27.0 ℃，符合高阻尼橡胶制品的使用要求。 |
| 英文摘要: |
| The liquid 3，4-polyisoprene rubber（3，4-LIR） was prepared by anionic polymerization，the microstructure of the 3，4-LIR was characterized by nuclear magnetic resonance hydrogen spectroscopy and gel permeation chromatography，and the 3，4-LIR was incorporated into natural rubber（NR）/styrene-butadiene rubber（SBR） composites to investigate its effect on the damping properties of the composites.The results showed that the 3，4-structure content in the synthesized 3，4-LIR was 66.65%.As the 3，4-LIR dosage increased, the crosslinking density of the NR/SBR composite decreased，the damping properties were improved，while the physical properties were reduced.When 3，4-LIR dosage reached 20 phr，the effective damping temperature range of the composite expanded to －46.1 ℃ to 27.0 ℃，meeting the requirements for high-damping rubber products. |
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