Effect of blend and extrusion on breakdown for low-density polyethylene

There are many reports that the technique of polymer blending is a useful method to obtain a new insulating material. We have used two kinds of low-density polyethylene (LDPE) with different densities, 0.9174 and 0.9180 g/cm³ and their blends with different blend ratios. There are two XRD peaks due to the different crystallinity, (110) and (020) peaks, respectively. The crystal size estimated from the (020) peak depends upon the blend ratio. We assume that F_Blmp of LDPE with a blend ratio of 50 wt% is associated with the crystal size estimated from the (020) peak. We also prepare specimens with different mixture methods in order to investigate the relationship between morphology and blending in detail