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首页> 外文期刊>Journal of Applied Polymer Science >Electrical properties of nanostructured interpenetrating polymer networks based on natural rubber (NR)/polystyrene (PS)
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Electrical properties of nanostructured interpenetrating polymer networks based on natural rubber (NR)/polystyrene (PS)

机译：基于天然橡胶（NR）/聚苯乙烯（PS）的纳米结构互穿聚合物网络的电性能

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摘要

The electrical properties of nanostructured sequential interpenetrating polymer networks from natural rubber (NR) and polystyrene (PS) have been studied in the frequency range of 10(2)-10(7) Hz. The permittivity, volume resistivity, dielectric loss factor, and dissipation factor were analyzed as a function of frequency, blend composition, crosslinking level, and initiating system. It was found that the volume resistivity and dissipation factor first increase, reach a maximum around 10(3)-10(5) Hz, and then decrease gradually with the increase of frequency. As the NR content is increased from 30 to 70%, the dissipation factor (tan 8) increases. On increasing the extent of the PS phase crosslinking, the permittivity increases. However, at higher levels of PS crosslinking, the permittivity values decrease due to the agglomeration of PS phase arising from excessive crosslinking. The morphology studies using a scanning electron microscope confirmed the agglomeration of PS phase at high crosslinking level. The permittivity values are maximum at 4% of crosslinking content. The influence of initiating system on the dielectric properties was not very significant. (c) 2005 Wiley Periodicals, Inc.
机译：已经研究了在10（2）-10（7）Hz频率范围内由天然橡胶（NR）和聚苯乙烯（PS）组成的纳米结构顺序互穿聚合物网络的电学性能。介电常数，体积电阻率，介电损耗因子和耗散因子随频率，共混物组成，交联度和引发体系而变化。发现体积电阻率和耗散系数先增加，在10（3）-10（5）Hz附近达到最大值，然后随着频率的增加而逐渐减小。随着NR含量从30％增加到70％，耗散因数（tan 8）增加。随着PS相交联程度的增加，介电常数增加。然而，在较高水平的PS交联下，介电常数值由于过度交联引起的PS相团聚而降低。使用扫描电子显微镜的形态学研究证实了在高交联水平下PS相的团聚。介电常数在交联含量的4％时最大。引发体系对介电性能的影响不是很明显。 （c）2005年Wiley Periodicals，Inc.

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