Dispersion and Rheology of Multiwalled Carbon Nanotubes in Unsaturated Polyester Resin
Dispersion and Rheology of Multiwalled Carbon Nanotubes in Unsaturated Polyester Resin
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DOI：
10.1021/ma3017844
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发表时间：
2013-02
期刊：
影响因子：
5.5
通讯作者：
E. Ureña-Benavides;Matthew J. Kayatin;V. Davis
中科院分区：
文献类型：
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作者：
E. Ureña-Benavides;Matthew J. Kayatin;V. Davis
采用流变学和光学显微镜研究了多壁碳纳米管（MWNT）在不饱和聚酯树脂（UPR）中的分散情况。实验确定的逾渗阈值为0.097体积%是非常接近的理论值0.085体积%的预期单独分散的MWNT与平均纵横比为590。流变学分析表明，分散体形成了一个开放的网络，分形维数为1.28。并与单壁碳纳米管（SWNT）和聚苯乙烯（PS）修饰的MWNT（MWNT-PS）进行了比较。SWNT形成的网络比MWNT更强，但MWNT-PS网络比未改性的MWNT弱。
Dispersions of multiwalled carbon nanotubes (MWNT) in unsaturated polyester resin (UPR) were studied by rheology and optical microscopy. The experimentally determined percolation threshold of 0.097 vol % was very close to the theoretical value of 0.085 vol % expected for individually dispersed MWNT with an average aspect ratio of 590. Rheological analysis showed that the dispersions formed an open network with a fractal dimension of 1.28. The results were compared with single-walled carbon nanotubes (SWNT) and polystyrene (PS)-modified MWNT (MWNT-PS). The SWNT formed stronger networks than MWNT, but the MWNT-PS networks were weaker than unmodified MWNT.