| SSBR/SiO_2混炼胶的动态黏弹行为 |
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| 引用本文： | 宋义虎,孙晋,郑强.SSBR/SiO_2混炼胶的动态黏弹行为[J].高分子学报,2009,0(8):729-734. |
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| 作者姓名： | 宋义虎 孙晋 郑强 |
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| 作者单位： | 高分子合成与功能构造教育部重点实验室,浙江大学高分子科学与工程学系,杭州,310027 |
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| 摘 要： | 研究了白炭黑(SiO2)填充溶液聚合丁苯橡胶(SSBR)的动态流变行为,考察了时间-浓度叠加(time-concentration superposition,TCS)原理在粒子填充橡胶中的应用,获得以未填充SSBR为基准的流变叠加曲线.流变叠加曲线在低频下呈现模量平台,复数黏度呈现剪切变稀行为,而损耗因子tanδ在特定频率下出现峰值.基于刚性粒子所导致的应变放大效应以及SiO2粒子间SSBR分子的受限运动,探讨了TCS模量平移因子AG与频率平移因子Aω随SiO2体积分数φ的变化.AG与Aω均为φ的标度函数,但AG～φ关系不符合粒子聚集体团聚(cluster-cluster aggregation,CCA)模型.讨论了偶联剂3-辛酰基硫代-1-丙基三乙氧基硅烷(NXT)对动态流变行为的影响.NXT不影响性叠加曲线的低频平台模量与剪切变稀幂律指数.然而,与不含偶联剂的混炼胶相比,NXT造成SSBR特征弛豫时间缩短,稠度与A增大.
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| 关 键 词： | 溶聚丁苯橡胶 白炭黑 动态黏弹性 时间-浓度叠加(time-concentration superposition TCS)原理 应变放大效应 |
| 收稿时间： | 2009-02-02 |
DYNAMIC RHEOLOGICAL BEHAVIOR OF SSBR/SiO_2 COMPOUNDS |
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| SONG Yihu,SUN Jin,ZHENG Qiang.DYNAMIC RHEOLOGICAL BEHAVIOR OF SSBR/SiO_2 COMPOUNDS[J].Acta Polymerica Sinica,2009,0(8):729-734. |
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| Authors: | SONG Yihu SUN Jin ZHENG Qiang |
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| Institution: | Key Laboratory of Macromolecular Synthesis and Functionalization, Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027 |
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| Abstract: | Dynamic rheological behaviors of silica white (SiO2) filled solution-polymerized styrene-butadiene rubber (SSBR) compounds were investigated,and application of the time-concentration superposition (TCS) principle to this system was verified.Master curves were obtained by shifting the frequency sweep rheological data of the filled compounds with respect to the unfilled SSBR.The master curves disclosed the existence of modulus plateaus in the low frequency region while the complex viscosity exhibited marked s... |
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| Keywords: | superposition |
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