HDPE/CNTs复合材料的制备及性能研究  

Study on Preparation and Properties of HDPE/CNTs Composites

作　　者：马连湘[1] 程凯[1] 何燕[1] 高江姗 

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061

出　　处：《塑料科技》2017年第4期25-30,共6页Plastics Science and Technology

基　　金：国家自然科学基金(51276091)

摘　　要：以高密度聚乙烯(HDPE)为基体、碳纳米管(CNTs)为导热填料,通过熔融共混法和溶液共混法制备了HDPE/CNTs导热复合材料;研究了CNTs添加量和尺寸对复合材料力学性能、热导率、维卡软化温度和熔体流动速率的影响,并对比了两种制备方法对复合材料力学性能和热导率的影响。结果表明:随着CNTs用量的增加,复合材料的拉伸强度、弯曲强度和热导率均明显提高;直径大的CNTs更有利于复合材料性能的提升;加入10%的CNTs后,复合材料的拉伸强度、弯曲强度和热导率分别提高了33.43%、36.31%和52.59%(测试温度60℃);采用熔融共混法制备的复合材料的性能提高更明显。With high density polyethylene（HDPE） as matrix, carbon nanotubes（CNTs） as conductive filler, the thermal conductive HDPE/CNTs composites were prepared by melt blending and solution blending methods. The effects of CNTs content and size on mechanical properties, thermal conductivity, Vicat softening temperature and melt flow rate of the composites were studied. And the effects of the two processing methods on mechanical properties and thermal conductivity of the composites were compared. The results show that with the increase of CNTs content, the tensile strength, bending strength and thermal conductivity of the composites increase obviously. CNTs with big diameter are more favorable for the improvement of the performance. The tensile strength, bending strength and thermal conductivity of the composites are increased by 33.43%, 36.31% and 52.59%（60℃） respectively when CNTs content is 10%. The improvements for the properties of the composites prepared by melt blending method are more obvious.

关 键 词：高密度聚乙烯 碳纳米管 熔融共混法 溶液共混法 热导率 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]