percolative
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The percolative behavior of prepared HDPE/GN composites had been investigated.
GN的含量与HDPE/GN导电复合材料电阻率之间的关系符合渗滤导电方程。
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The studies of the electrical transport and magnetic properties of La-Pr-Mn-0 system show that metal-insulator transition temperature is less than T〓, and the resistivity also shows insulator behavior in low temperature, which is explained by percolative conduction and some local effects in low temperatures.
说明La-Pr-Mn-O是一种非常有研究潜力的电子掺杂型化合物。 6。电输运性质和磁性质的研究发现,金属—绝缘体转变温度小于居里温度Tc,并且低温出现绝缘态。
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The main contents are as following:1 The percolative behavior of HDPE/GN conducting compositesHDPE/GN conducting composites were prepared by melt blending of HDPE and GN.
本论文主要研究工作如下:(1)HDPE/GN导电复合材料渗滤导电行为研究本文以GN与HDPE熔融复合制备的HDPE/GN导电复合材料作为研究对象,研究了HDPE/GN导电复合材料的渗滤导电行为。
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Furthermore, it was found that, when the ferromagnetic phase fraction is above the percolative threshold, the metal-insulator transition temperature increases, the resistivity decreases, but no obvious changes appears in the magnetoresistance value with increasing the ferromagnetic phase fraction.
最后,我们研究了两相比例对金属—绝缘体转变温度和磁电阻效应的影响,发现在渗流阈值以上,增加铁磁相含量可以提高金属—绝缘体转变温度,降低系统的电阻率,但对磁电阻数值没有明显的影响。
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Analyses for binder phase distribution and percolative nature as well as effect of progressive substitution HAC byα-alumina on phase composition and distribution in alumina-substituted MDF composites and wet properties suggest that the contribution of the cross-linked PVA located in the interphase region to transport of moisture is limited.
通过加热MDF复合材料至不同温度点分析了其胶结相的分布和渗透特性以及掺加α—A1〓O〓对其相组成、分布和湿性能的影响,结果表明,界面相中交联PVA对湿度传递的贡献是非常有限的,而本体聚合物区域的PVA提供了湿度传递的主要途径,未反应水泥颗粒作为水的接受体,对MDF复合材料的湿抗折性能与吸湿也产生了严重的有害影响。