Title :
Research on preparation technology and properties of mLLDPE/LDPE/CB composite with PTC
Author :
Wenlong Zhang ; Xu Hu ; Weiju Wu ; Yingchun Zhang
Author_Institution :
Coll. of Mater. Sci. & Eng., Harbin Univ. of Sci. & Technol., Harbin, China
Abstract :
mLLDPE(metallocene polyethylene)/LDPE/CB(conductive carbon black) composite with positive temperature coefficient(PTC) was successfully prepared by blending. The rheology behavior and the strength of PTC of the composites were investigated through methods of rheometer test, resistance measurement, scanning electronic microscope (DSC) and scanning electron microscope (SEM) analysis. The results showed that CB can be uniformly dispersed in the mLLDPE / LDPE composite; mLLDPE/LDPE/CB composite has higher strength of PTC than this of the LDPE/CB composite. The PTC mutations temperature of mLLDPE/LDPE/CB composite increased from 358.7K to 377.3K, and also its PTC strength increased from 6.7 to 8.1 with the increasing of mLLDPE content (25wt%~75wt%) to compare with the PTC strength of traditional PTC polymer (LDPE / CB). The proper blend technology conditions of mixing rotation, temperature and time were 30r/min, 453K, 10min respectively.
Keywords :
blending; carbon; differential scanning calorimetry; filled polymers; materials preparation; polyethylene insulation; polymer blends; scanning electron microscopy; DSC; PTC polymer; SEM analysis; blend technology; blending; conductive carbon black composite; mLLDPE-LDPE-CB composite; metallocene polyethylene; mixing rotation; positive temperature coefficient; preparation technology; scanning electron microscope; scanning electronic microscope; temperature 453 K; time 10 min; Carbon; Fasteners; Rheology; PTC Properties; Preparation technology; mLLDPE;
Conference_Titel :
Properties and Applications of Dielectric Materials (ICPADM), 2012 IEEE 10th International Conference on the
Conference_Location :
Bangalore
Print_ISBN :
978-1-4673-2852-4
DOI :
10.1109/ICPADM.2012.6319031
