Influence of interactions on the mechanical, morphological and thermal properties of in situ ternary composites based on fluorocarbon elastomer, acrylic elastomer and liquid crystalline polymer blends
Influence of interactions on the mechanical, morphological and thermal properties of in situ ternary composites based on fluorocarbon elastomer, acrylic elastomer and liquid crystalline polymer blends
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DOI：
10.1002/pi.1869
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发表时间：
2005-10
影响因子：
3.2
通讯作者：
E. Shivakumar;K. Pandey;S. Alam;C. Das
中科院分区：
文献类型：
--
作者：
E. Shivakumar;K. Pandey;S. Alam;C. Das
研究了氟碳弹性体(FKM)、丙烯酸酯弹性体(ACM)和液晶聚合物(LCP)的二元和三元共混物的力学、形态和热性能。通过改变LCP的用量，固定FKM和ACM的比例，制备了三元共混物。加入第三组分--与LCP相互作用的聚丙烯酸酯橡胶，通过作用于界面促进了LCP相的结构发展。三元共混物的力学性能显著提高，主要是由于ACM相互作用导致橡胶粒子在LCP原纤维上形成原纤和粘合。形态研究表明，在相同工艺条件下制备的三元共混物比FKM和LCP的二元共混物具有更明显的LCP微区纤化现象。热重分析(TGA)表明，LCP的存在提高了FKM的热稳定性，但降低了三元共混物的热稳定性。版权所有(C)2005化学工业学会
The mechanical, morphological and thermal properties of the binary and ternary blends of a fluorocarbon elastomer (FKM), an acrylic elastomer (ACM) and a liquid crystalline polymer (LCP) were investigated. The ternary blends were prepared by varying the amount of the LCP but fixing the ratio of the FKM and ACM. Addition of a third component, a polyacrylic rubber which interacted with the LCP, facilitated the structural development of the LCP phase by acting at the interface. The mechanical properties of the ternary blends were substantially improved because of both the fibril generation and adhesion of rubber particles on the LCP fibrils, which were attributed to the ACM interaction. Morphological investigations suggest that the fine fibrillation of the LCP domains is more apparent in the ternary blends than in the binary blends of FKM and LCP prepared under the same processing conditions. Thermogravimetric analysis (TGA) revealed an improved thermal stability of the FKM in the presence of the LCP for the binary blends, but a lower thermal stability for the ternary blends. Copyright © 2005 Society of Chemical Industry