The influence of mold pressing parameters on the room temperature electrical resistance of high density polyethylene/carbon black composites was investigated in this paper.The low room temperature electrical resistanc...The influence of mold pressing parameters on the room temperature electrical resistance of high density polyethylene/carbon black composites was investigated in this paper.The low room temperature electrical resistance of the composites can be obtained under the mold pressing parameters:mold pressing pressure 6～14 MPa,temperature 150～160℃,mold pressing time 15～30 minutes and the time of molded specimen cooling to room temperature for 30 minutes.The positive temperature coefficient effect of the sample prepared under optimized mold pressing parameters is 7.7,while the negative temperature coefficient effect is only 0.9.The thermal analysis and the microstructure of the samples can be analyzed using the DSC and SEM respectively.展开更多
文摘The influence of mold pressing parameters on the room temperature electrical resistance of high density polyethylene/carbon black composites was investigated in this paper.The low room temperature electrical resistance of the composites can be obtained under the mold pressing parameters:mold pressing pressure 6～14 MPa,temperature 150～160℃,mold pressing time 15～30 minutes and the time of molded specimen cooling to room temperature for 30 minutes.The positive temperature coefficient effect of the sample prepared under optimized mold pressing parameters is 7.7,while the negative temperature coefficient effect is only 0.9.The thermal analysis and the microstructure of the samples can be analyzed using the DSC and SEM respectively.
