高电压技术2012，Vol.38Issue(3)：684-690,7.
MgO/LDPE纳米复合材料制备及其空间电荷特性
Preparation of MgO/LDPE Nanocomposites and Its Space Charge Property
摘要
Abstract
To decrease the accumulation of space charge in low density polyethylene（LDPE）,we prepared magnesium oxide（MgO）/ LDPE nanocomposites by mixing melted LDPE and MgO nano-powder.The dispersion and particle size of MgO in MgO/LDPE nanocomposites were characterized by scanning electron microscope（SEM）,the crystallinity of MgO/LDPE nanocomposites with different contents of MgO was determined by using differential scanning calorimetry（DSC）,the space charge distribution of MgO/LDPE nanocomposites with different content of MgO was measured by using pulse electro-acoustic（PEA）,and the tensile properties were measured.The experimental results reveal MgO particles with diameters of about 50 nm are well dispersed in MgO/LDPE nanocomposites.The elastic modulus and tensile strength of LDPE/MgO nanocomposites with different content of MgO are higher than those of pure LDPE,and reach the maximum at the MgO loading of 2%.The crystallinity of MgO/LDPE nanocomposites with different contents of MgO is higher than that of pure LDPE.The space charge injection and mobility of MgO/LDPE nanocomposite can be suppressed by nano MgO loading,and the space charge of MgO/LDPE nanocomposite is effectively suppressed at the MgO loading of 3%.关键词
纳米复合材料/氧化镁/低密度聚乙烯/空间电荷/拉伸性能/结晶度Key words
nanocomposite/magnesium oxide/low density polyethylene/space charge/tensile property/crystallinity分类
化学化工引用本文复制引用
徐明忠,赵洪,吉超,杨佳明,张文龙..MgO/LDPE纳米复合材料制备及其空间电荷特性[J].高电压技术,2012,38(3):684-690,7.基金项目
国家自然科学基金 （）
