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首页> 外文期刊>Journal of Applied Polymer Science >Preparation of polypropylene/carbon nanotube composite powder with a solid-state mechanochemical pulverization process
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Preparation of polypropylene/carbon nanotube composite powder with a solid-state mechanochemical pulverization process

机译：固态机械化学粉碎法制备聚丙烯/碳纳米管复合粉末

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A solid-state mechanochemical pulverization process, that is, pan milling, was used to prepare a polypropylene (PP)/carbon nanotube (CNT) composite powder. The composite powder was then melt-mixed with a twin-roll masticator to obtain a PP/CNT composite. The morphology of the PP/CNT powder and the PP/CNT composite was investigated. The crystallization and mechanical properties of the latter were also studied. After 20 milling cycles (ca. 60 min), the average diameter of PP/3 wt % CNT composite powder particles was a few micrometers. The length of the CNTs was reduced from a few micrometers to 0.4-0.5 mum. The CNTs became straighter and more uniform in length. The effects of incorporating the CNTs into PP were as follows: (1) the crystallization rate and temperature of PP increased, (2) a strong b-plane orientation of PP was induced, and (3) the Young's modulus and yield strength of PP increased. Interfacial adhesion between PP and the CNTs was improved by the mechanical action of the solid-state pulverization process used, which favored the dispersion of the CNTs into PP. (C) 2004 Wiley Periodicals, Inc.
机译：固态机械化学粉碎过程，即平磨，用于制备聚丙烯（PP）/碳纳米管（CNT）复合粉末。然后将复合粉末与双辊咀嚼器熔融混合以获得PP / CNT复合材料。研究了PP / CNT粉末和PP / CNT复合材料的形貌。还研究了后者的结晶和机械性能。在20个研磨周期（约60分钟）后，PP / 3 wt％CNT复合粉末颗粒的平均直径为几微米。 CNT的长度从几微米减少到0.4-0.5微米。 CNT变得更直，长度更均匀。将CNT掺入PP的效果如下：（1）PP的结晶速率和温度升高;（2）诱导PP的b面取向很强;（3）PP的杨氏模量和屈服强度增加。 PP和CNT之间的界面粘合力通过所使用的固态粉碎过程的机械作用得以改善，这有助于将CNT分散到PP中。 （C）2004年Wiley Periodicals，Inc.

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