| HMPIB分子量及配比对IIR/HMPIB体系力学性能的影响 |
| Effect of the ratio and the molecular weight of HMPIB on HMPIB / IIR mechanical properties |
| 投稿时间：2015-01-06 修订日期：2015-01-06 |
| DOI： |
| 中文关键词: 聚异丁烯 丁基橡胶 共混 交联密度 强度 |
| 英文关键词: Polyisobutylene Butyl rubber Blends Cross-linking density Strength |
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| 中文摘要: |
| 本文研究了HMPIB分子量及用量对IIR/HMPIB共混橡胶力学性能的影响。结果表明：HMPIB能够降低门尼粘度,随用量的增加门尼粘度逐渐降低；饱和的HMPIB使IIR/HMPIB体系有效交联密度降低,进而影响硫化胶的力学性能。扯断伸长率及撕裂强度都有增加,且增幅与HMPIB的用量及分子量成正比；较高分子量的HMPIB对硫化胶拉伸强度是有利的；定伸应力随HMPIB用量的增加呈下降趋势。在交联密度水平相当的前提下,IIR/HMPIB体系比纯IIR硫化胶有更大的拉伸强度、撕裂强度和扯断伸长率,定伸应力相当或稍有下降,显示了HMPIB对IIR有一定的增强作用。 |
| 英文摘要: |
| This paper studies the effect of the HMPIB molecular weight and ratio on the mechanical properties of IIR/HMPIB blend rubber. The results show that the HMPIB can reduce the Mooney viscosity, gradually reduce with the increase of the dosage of HMPIB. Under the same curing system, adding saturated HMPIB make the effective cross-linking density of the blend rubber decreased, but the breaking elongation and tear strength of the blend rubber has increased, and growth is proportional to the HMPIB dosage and molecular weight. High molecular weight HMPIB is good for tensile strength of the vulcanizate .Tensile stress set out a downward trend with the amount of HMPIB. With the similar cross-linking density level, IIR/HMPIB has a greater tensile strength, tear strength and elongation at break than IIR. HMPB can enhance IIR. |
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