Extrudate swell behavior of polypropylene composites filled with microencapsulated red phosphorus
Extrudate swell behavior of polypropylene composites filled with microencapsulated red phosphorus
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DOI：
10.1002/app.39114
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发表时间：
2013-09
影响因子：
3
通讯作者：
Ji‐Zhao Liang;Jinxin Feng;C. Tsui;C. Tang
中科院分区：
文献类型：
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作者：
Ji‐Zhao Liang;Jinxin Feng;C. Tsui;C. Tang
采用双螺杆挤出法制备了微囊化红磷填充聚丙烯（PP）复合材料。利用熔体流动指数研究了载荷和温度对PP/MRP复合熔体挤出膨胀行为的影响。试验温度为180 ~ 205℃，载荷为2.16 ~ 12.5 kg。结果表明：复合熔体的模胀比(B)随载荷的增加大致呈线性增加，随温度的升高略有下降；复合熔体的模胀比对载荷的敏感性是显著的。当试验温度或载荷一定时，随着MRP质量分数的增加，复合熔体的B值略有下降。研究结果可为这些复合材料的加工提供有用的信息。©2013 Wiley期刊公司j:。变异较大。科学。, 2013年
The microencapsulated red phosphorus (MRP) filled polypropylene (PP) composites were prepared using a twin-screw extruder. The effects of load and temperature on the extrudate swell behavior of the PP/MRP composite melts were investigated by means of a melt flow indexer. The test temperatures and loads were varied from 180 to 205°C and from 2.16 to 12.5 kg, respectively. The results showed that the die-swell ratio (B) of the composite melts increased roughly linearly with increasing load while decreased slightly with a rise of test temperature. The sensitivity of the die-swell ratio of the composite melts to load was significant. When the test temperature or load was constant, the values of the B of the composite melts decreased slightly with increasing MRP weight fraction. The findings can provide useful information for processing of these composites. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013