中国电机工程学报2012，Vol.32Issue(16)：196-202,7.
MgO／LDPE纳米复合材料抑制空间电荷及电树枝化特性
Space Charge and Electric Treeing Resistance Properties of MgO/LDPE Nanocomposite
摘要
Abstract
Magnesium oxide （MgO）/low density polyethylene （LDPE） nano-composite was prepared by laboratory blending process after MgO nano-powder was treated by silane coupling agent. MgO particles with diameters of about 100nm were observed to be well dispersed in LDPE by means of high composition contrast scanning electron microscope （SEM） image. The results of space chargedistribution measurement by the pulse electro-acoustic （PEA） method revealed that the space charge injection of MgO/LDPE nano-composite was effectively suppressed at 4% MgO in the composite. Meanwhile, at this concentration of MgO, a much higher threshold of space charge injection was found in MgO/ LDPE nano-composite by the current voltage characteristic. Electrical treeing breakdown tests indicated a higher tree inception voltage and a restrained tree propagation process in the composite. Interracial electric charge in the boundary of the nano particles and the polymer matrix was suggested to be responsible for the improvement of electrical properties.关键词
纳米电介质/氧化镁/空间电荷/伏安特性/电树/枝化Key words
nanometric dielectrics/MgO/space charge/I- V characteristics/electric treeing分类
信息技术与安全科学引用本文复制引用
赵洪,徐明忠,杨佳明,张文龙,王暄,雷清泉..MgO／LDPE纳米复合材料抑制空间电荷及电树枝化特性[J].中国电机工程学报,2012,32(16):196-202,7.基金项目
国家自然科学基金项目（50977019）. （）
