Strengthening acrylonitrile-butadiene-styrene (ABS) with nano-sized and micron-sized calcium carbonate
Strengthening acrylonitrile-butadiene-styrene (ABS) with nano-sized and micron-sized calcium carbonate
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DOI：
10.1016/j.polymer.2004.11.001
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发表时间：
2005-01-06
期刊：
影响因子：
4.6
通讯作者：
Ang, LS
中科院分区：
文献类型：
--
作者：
Jiang, L;Lam, YC;Ang, LS
用微米级(TMCC)和纳米级沉淀碳酸钙(NPCC)粒子通过熔融共混的方法增强ABS。与纯ABS相比，MCC/ABS复合材料具有较高的定伸应力和较低的拉伸强度和冲击强度。相反，NPCC提高了ABS的模数，同时在一定的NPCC加载范围内保持甚至提高了其冲击强度。扫描电子显微镜分析表明，与MCC相比，NPCC颗粒/团聚体在复合材料中的分布尺寸要小得多。NPCC/ABS复合材料力学性能提高的主要原因是NPCC与ABS之间较大的界面面积和韧带中空化诱导的剪切屈服。NPCC/ABS还表现出与MCC/ABS完全不同的流变行为，如牛顿区消失、低频高G‘和屈服现象的出现。复合材料中形成了一种NPCC网络结构，并导致了这些类固体的流变行为。(C)2004爱思唯尔有限公司。保留所有权利。
ABS was reinforced by both micron-sized (TMCC) and nano-sized precipitated calcium carbonate (NPCC) particles through melt compounding. The MCC/ABS composites were found to have higher modulus but lower tensile and impact strength than neat ABS. In contrast, NPCC increased modulus of ABS whilst maintained or even increased its impact strength for a certain NPCC loading range. SEM examinations revealed that NPCC particles/agglomerates were distributed in much smaller sizes in the composites than its MCC counterparts. The larger interfacial area between NPCC and ABS and cavitation-induced shear yielding in the ligament are believed to be the main reasons of the mechanical property improvement of the NPCC/ABS composites. NPCC/ABS also shows completely different rheological behavior from MCC/ABS, such as the loss of Newtonian region, high G' at low frequencies and the appearance of yield phenomenon. A NPCC network structure was believed to be formed in the composites and induced these pseudo-solid-like rheological behaviors. (C) 2004 Elsevier Ltd. All rights reserved.