In‐process ultrasonic measurements of orientation and disorientation relaxation of high‐density polyethylene/polyamide‐6 composites with compatibilizer
In‐process ultrasonic measurements of orientation and disorientation relaxation of high‐density polyethylene/polyamide‐6 composites with compatibilizer
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DOI：
10.1002/app.31566
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发表时间：
2010-04
影响因子：
3
通讯作者：
Congmei Lin;Huimin Sun;Shanshan Wang;Jian Huang;Jiang Li;Shaoyun Guo
中科院分区：
文献类型：
--
作者：
Congmei Lin;Huimin Sun;Shanshan Wang;Jian Huang;Jiang Li;Shaoyun Guo
采用实时超声技术研究了高密度聚乙烯(HDPE)接枝马来酸酐(HDPE-g-MAH)的增容剂前驱体(CP)增容高密度聚乙烯(HDPE)和尼龙6(PA6)共混物熔体在受限通道中的取向和脱取向的松弛过程。实验结果表明，HDPE/PA6共混物在取向和脱取向过程中的声速变化可以用指数方程来描述，由此可以得到最大取向度和松弛时间。随后，研究了Cp对取向和失定向弛豫过程的影响。此外，通过扫描电子显微镜分析和流变学测试，研究了CP含量与聚合物形态和粘度的关系。《威利期刊》公司，《应用波利姆科学》，2010
The relaxation processes of orientation and disorientation of melts of high-density polyethylene (HDPE) and polyamide-6 (PA6) blends compatibilized with a compatibilizer precursor (CP) of HDPE-grafted maleic anhydride (HDPE-g-MAH) were investigated in a restricted channel using real-time ultrasonic technique. The experimental results showed that the evolution of ultrasonic velocity of HDPE/PA6 blends during the orientation or disorientation processes could be described by the exponential equation from which the maximum orientation degree and relaxation time could be obtained. Subsequently, the effects of CP on the relaxation processes of orientation and disorientation were studied. In addition, the relations of the CP content and the morphology and viscosity were investigated by scanning electron microscope analysis and rheological tests. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010