Mechanical and electrical properties of natural rubber and nitrile rubber blends filled with multi-wall carbon nanotube: Effect of preparation methods
Mechanical and electrical properties of natural rubber and nitrile rubber blends filled with multi-wall carbon nanotube: Effect of preparation methods
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DOI：
10.1016/j.polymertesting.2013.03.002
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发表时间：
2013-06-01
期刊：
影响因子：
5.1
通讯作者：
Rattanasom, Nittaya
中科院分区：
文献类型：
--
作者：
Kueseng, Pattana;Sae-oui, Pongdhorn;Rattanasom, Nittaya
通过预分散和常规方法制备的碳纳米管/NR母粒与丁腈橡胶混合，制备了50/50填充的CNT /NBR共混物。共混物中碳纳米管的含量从0到6phr不等。在一定的碳纳米管负载下，预分散法制备的母粒共混物的硬度、模量、拉伸强度和撕裂强度均显著高于常规法制备的母粒。这仅仅是因为碳纳米管在共混物中的分散性更好。动态力学结果表明，采用预分散法制备的母粒硫化胶的最大tan 8小于常规样品。这表明用预分散法制备的母粒具有较强的补强效果。此外，仅加入2 phr碳纳米管时，P共混物的体积电阻率比相应的C共混物低约2个数量级。此外，具有4 phr MWCNT的P共混物的导热系数比常规方法制备的相应样品高1.7倍。(C) 2013 Elsevier Ltd.版权所有。
Carbon nanotube (CNT)/NR masterbatches prepared by predispersing and conventional methods were mixed with NBR for preparing CNT-filled 50/50 NR/NBR blends. The amount of CNT in the blends was varied from 0 to 6 phr. At a given CNT loading, hardness, modulus, tensile strength and tear strength of the blends containing the masterbatches prepared by the predispersing method were significantly higher than those prepared by the conventional method. This was simply due to the better CNT dispersion in the blends. Additionally, dynamic mechanical results showed that the maximum tan 8 of the vulcanizates containing the masterbatches prepared by the predispersing method was lower than that of the corresponding conventional samples. This behaviour indicated the stronger reinforcing efficiency when the masterbatch prepared by the predispersing method was utilized. In addition, the volume resistivity of the P blends was lower than that of the corresponding C blend by about 2 orders of magnitude when only 2 phr of CNT was added. Moreover, thermal conductivity of the P blend having 4 phr of MWCNT was 1.7 times higher than that of the corresponding sample prepared by the conventional method. (C) 2013 Elsevier Ltd. All rights reserved.