| 丁苯橡胶热空气老化性能变化之间的相关性 |
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| 引用本文： | 饶秋华,袁慧五,银继伟.丁苯橡胶热空气老化性能变化之间的相关性[J].合成橡胶工业,2007,30(3):172-174. |
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| 作者姓名： | 饶秋华 袁慧五 银继伟 |
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| 作者单位： | 海军工程大学,化学与材料系,湖北,武汉,430033 |
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| 摘 要： | 通过热空气老化试验,建立了丁苯橡胶(SBR)热空气老化拉伸性能变化率与邵尔A硬度变化值之间的相关性。结果表明,在热空气老化过程中,无论是普通硫化体系还是有效硫化体系,SBR硫化胶老化后的邵尔A硬度变化值随老化时间的延长而呈指数趋势增加,且老化后扯断伸长率变化率与邵尔A硬度变化值之间呈线性关系;在普通硫化体系下,硫化胶表现为老化后扯断伸长率变化率和拉伸强度变化率随老化时间的延长而呈指数趋势下降,而老化后拉伸强度变化率与邵尔A硬度变化值之间以及拉伸强度变化率与扯断伸长率变化率之间呈线性关系。
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| 关 键 词： | 丁苯橡胶 热空气老化性能 邵尔A硬度 拉伸强度 扯断伸长率 相关性 |
| 文章编号： | 1000-1255（2007）03-0172-03 |
| 修稿时间： | 2006-04-07 |
Correlation of changes of air aging properties of styrene-butadiene rubber |
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| Rao Qiuhua,Yuan Huiwu,Yin Jiwei.Correlation of changes of air aging properties of styrene-butadiene rubber[J].China Synthetic Rubber Industry,2007,30(3):172-174. |
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| Authors: | Rao Qiuhua Yuan Huiwu Yin Jiwei |
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| Affiliation: | Chemistry and Materials Department, Naval University of Engineering, Wuhan 430033, China |
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| Abstract: | The correlation between changes of tensile properties and Shore A hardness of air aged styrene-butadiene rubber(SBR) was established. The results showed that regardless of conventional vulcanization or efficient vulcanization, the change of Shore A hardness of aged SBR vulcanizates increased in exponential form with increasing aging time, and the relationship between changes of elongation at break and Shore A hardness was linear. For the conventional vulcanization system, change of elongation at break and tensile strength of aged SBR vulcanizates decreased in exponential form with increasing aging time. The relationships between changes of tensile strength and Shore A hardness or elongation at break were linear. |
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| Keywords: | styrene-butadiene rubber air aging property shore A hardness tensile strength elongation at break correlation |
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