A Modified Rheological Model of Viscosities for BR-SBS Blends

Chu Line-Hwa; Chiu Wen-Yen; Chen Chao-Hsun; Tseng Hsieng-Cheng

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A Modified Rheological Model of Viscosities for BR-SBS Blends

机译：BR-SBS共混物的粘度修正流变模型

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Blends of polybutadiene (BR) and styrene-butadiene-styrene triblock co-polymer (SBS) have been prepared by a two-roll mill.The morphologies of extruded samples from a capillary rheometer were observed by scanning electron microscopy (SEM).It is found that PS phase is dispersed in the BR phase.The glass transitiontemperature (T_g) of the blend has been examined by using differential scanning calorimetry (DSC).From the T_g behavior and the electron microscopy study,it is found that certain degree of miscibility between the polystyrene phase and the BR phase is observed.The rheological behavior of the blend has been investigated by a capillary rheometer.It is found that the viscosity of the blend increases with increased content of PS phase.The behavior is in accord with the expected behavior of filler effect.To predict the filler effect of PS phase on the BR-SBS blend,a modified model of Chen and Cheng is proposed to elucidate the rheological properties of the BR-SBS blends with different compositions.Chen and Cheng's micromechanical model derived in Part I of this series,which relates the macroscopic shear stress to the macroscopic shear rate of a rigid non-Newtonian suspension when the direct contribution of Brownian force is completely neglected.The agreement between the theoretical predictions and the experimental results is satisfactory.

机译：用两辊研磨机制备了聚丁二烯（BR）和苯乙烯-丁二烯-苯乙烯三嵌段共聚物（SBS）的共混物，通过扫描电子显微镜（SEM）观察了毛细管流变仪挤出的样品的形貌。通过差示扫描量热法（DSC）对掺混物的玻璃化转变温度（T_g）进行了研究。从T_g行为和电子显微镜研究中发现混溶性达到一定程度通过毛细管流变仪研究了共混物的流变行为，发现共混物的粘度随PS相含量的增加而增加，其行为符合预期为了预测PS相对BR-SBS共混物的填充效果，提出了一种改进的Chen和Cheng模型，以阐明BR-SBS共混物的流变性。 t和T组成。本系列第一部分中的Chen和Cheng的微观力学模型将宏观剪应力与刚性非牛顿悬架的宏观剪切速率联系起来，而完全忽略了布朗力的直接作用。理论之间的一致性预测和实验结果令人满意。

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《Journal of Applied Polymer Science》 |1999年第1期|共8页
作者
Chu Line-Hwa; Chiu Wen-Yen; Chen Chao-Hsun; Tseng Hsieng-Cheng;
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正文语种 eng
中图分类高分子化学（高聚物）;高分子化合物产品;有机化学;
关键词
viscosity model; BR-SBS Blends;

机译：粘度模型;BR-SBS共混物;

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专利

1. A Modified Rheological Model of Viscosities for BR-SBS Blends [J] . Chu Line-Hwa, Chiu Wen-Yen, Chen Chao-Hsun, Journal of Applied Polymer Science . 1999,第1期

机译：BR-SBS共混物的粘度修正流变模型
2. A Modified Rheological Model of Viscosities for BR-SBS Blends [J] . Chu Line-Hwa, Chiu Wen-Yen, Chen Chao-Hsun, Journal of Applied Polymer Science . 1999,第1期

机译：BR-SBS共混物的粘度修正流变模型
3. Asphalt/polyethylene blends: Rheological properties, microstructure and viscosity modeling [J] . Maria A. Vargas, Miguel A. Vargas, Antonio Sanchez-Solis, Construction and Building Materials . 2013,第auga期

机译：沥青/聚乙烯共混物：流变性，微观结构和粘度模型
4. Influence of a new Viscosity Modifying Admixture (VMA) on the rheological properties of cement paste [C] . Shaofeng Wang, Hui Zhou, Yao Bi, International Conference on Mechatronics, Materials, Biotechnology and Environment . 2016

机译：新粘度改性混合物（VMA）对水泥浆液流变性能的影响
5. High-Pressure Viscosity of Biodiesel, Diesel, and Biodiesel-Diesel Blends: Experimental Data and Modeling [D] . Duncan, Andrew M. 2015

机译：生物柴油，柴油和生物柴油 - 柴油混合物的高压粘度：实验数据和建模
6. Study on Compatibility and Rheological Properties of High-Viscosity Modified Asphalt Prepared from Low-Grade Asphalt [O] . Mingliang Li, Feng Zeng, Ruigang Xu, 2019

机译：低级沥青制备的高粘度改性沥青的相容性和流变性能研究
7. Stone Matrix Asphalt (SMA) is a gap-graded mix that is gaining popularity worldwide. Generally, gap graded mixes are thought to be weak in fatigue resistance. In this study, cellulose fibers were pre-blended in PG64-22 binder with fiber proportions of 0.2%, 0.4%, 0.6%, 0.8% and 1.0% by weight of aggregates. The fiber-modified binder showed improved rheological properties and showed that the PG64-22 binder can be modified and raised to PG70-22 grade. The cellulose oil palm fiber (COPF) was found to improve the diameteral fatigue performance of SMA design mix. The fatigue life increased to a maximum at a fiber content of about 0.6%, whilst the tensile stress and stiffness also showed a similar trend in performance. The initial strains of the mix were lowest at a fiber content of 0.6%. [O] . Ratnasamy Muniandy, Bujang B.K. Huat 2006

机译：石基沥青（SMA）是一种间隙分级的混合物，在全球范围内越来越受欢迎。通常，间隙梯度混合料被认为抗疲劳性较弱。在这项研究中，将纤维素纤维预先掺入PG64-22粘合剂中，纤维比例为集料重量的0.2％，0.4％，0.6％，0.8％和1.0％。纤维改性的粘合剂表现出改善的流变性能，并表明PG64-22粘合剂可以被改性并提高到PG70-22级。发现纤维素油棕纤维（COPF）可以改善SMA设计混合物的直径疲劳性能。在约0.6％的纤维含量下，疲劳寿命增加到最大值，而拉伸应力和刚度也表现出相似的性能趋势。混合物的初始应变在纤维含量为0.6％时最低。

A Modified Rheological Model of Viscosities for BR-SBS Blends

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