Crosslinking Dependence of Direct Current Breakdown Performance for XLPE-PS Composites at Different Temperatures.

Compared with pure LDPE, the addition of 1 phr PS increases the elastic modulus in the test temperature range of 10~100 °C, but after crosslinking, the elastic modulus of composites is decreased and with the increase of DCP content, the elastic modulus of composites shows a decreasing trend.

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Results show that with the increase of the degree of crosslinking, the crystallinity of XLPE-PS composites decreases gradually, but their DC breakdown strength demonstrates an increasing trend at 30~90 °C and the enhancement also increases with the rise of temperature.

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