One-step process to make electrically conductive thermoplastic vulcanizates filled with MWCNTs
- 104 Downloads
Electrically conductive thermoplastic vulcanizates (TPVs) filled by multi-walled carbon nanotubes (MWCNTs) are prepared by a simple one-step melt mixing process, based on linear low density polyethylene (LLDPE) and ultrafine full-vulcanized rubber particles (UFRP). An ideal morphology with controlled localization of MWCNTs in continuous LLDPE matrix and appropriate size of finely-dispersed UFRP can be achieved at the same time. The controlled localization of MWCNTs in the continuous phase facilitates the formation of conductive pathway, and thus the volume resistivity of the as-prepared LLDPE/UFRP/MWCNTs thermoplastic vulcanizates is significantly decreased. The results show that both the blend ratio of LLDPE/UFRP and the loading of MWCNTs have remarkable effect on the volume resistivity. Significantly, the electrically conductive TPVs exhibit good mechanical properties duo to the fine dispersion of UFRP in LLDPE. The added MWCNTs are capable of imparting reinforcement effects to thermoplastic vulcanizates with just a slight loss of stretchability and elasticity.
KeywordsThermoplastic vulcanizates Multi-walled carbon nanotubes Ultrafine full-vulcanized rubber particles Volume resistivity Mechanical properties
Unable to display preview. Download preview PDF.
- 1.Ozawa, O. and Imada, K., 2003, U.S. Pat., 6,589,647Google Scholar
- 2.Pfeiffer, B., Heydweiller, J. and Risch, J., 1998, U.S. Pat., 5,736,603Google Scholar
- 3.Karttunen, M. and Mustonen, J., 2003, U.S. Pat., 6,638,448Google Scholar
- 8.Le, H., Heidenreich, D., Kolesov, I., Ilisch, S. and Radusch, H., J. Appl. Polym. Sci., 2010, 117: 2622Google Scholar
- 11.Qiao, J., Wei, G., Zhang, X., Zhang, S., Gao, J., Zhang, W., Liu, Y. and Li, J., 2002, U.S. Pat., 6,423,760Google Scholar