Influences of Annealing Method on the Space Charge Properties in LDPE

Publisher Summary This chapter presents the influences of annealing method on the space charge properties in low-density polyethylene (LDPE). LDPE films are prepared by three kinds of annealing methods, which are different in cooling velocity. The crystallinity of the LDPE samples are measured and compared. Surfaces of samples are observed. Higher cooling velocity results in lower crystallinity. High DC negative voltage is applied on the samples and then samples are open-circuit. Space charge formed in samples is measured during the above procedure. The space charge properties based on crystallinity and morphology are discussed.