摘要
借助HAAKE转矩流变仪,采用熔融共混法制备了一系列Cu粉含量不同的Cu/丙烯腈-丁二烯-苯乙烯共聚物(ABS)复合材料,采用多层叠压法制备了内部Cu粉含量逐渐变化的板状Cu/ABS复合导电梯度功能材料,并对其结构和性能进行了表征。结果表明,所制备导电梯度功能材料的性能与均质复合材料存在很大差异。电性能测试结果显示,随着Cu粉含量沿板材厚度方向的梯度增加,其导电性能发生逾渗转变,体积电阻率从一侧的1016Ω.cm降低到另一侧的105Ω.cm。弯曲性能测试表明,富含ABS树脂的一侧表现出较高的弯曲强度,仅比纯ABS的弯曲强度低6%;而富含填料的另一侧则表现出较高的模量,比纯ABS高约20%。实验证明,将导电复合材料做成梯度结构可以兼顾材料的导电性能和力学性能。
In order to prepare conductive functionally gradient material（CFGM）,a series of Cu/acrylouitrile butadiene styrene copolymer（ABS） composites with different Cu content were prefabricated by use of HAAKE torque rheometer.The Cu/ABS conductive functionally gradient materials were prepared successfully by laminate molding through changing the content of the Cu filler of each layer.The structure and performane of the materials were investigated.The experimental results indicate that the performance of the materials changes gradually along the thickness direction based on the content of Cu,which shows great difference from the homogeneous composites.Conductivity test shows that the percolation phenomenon takes place in the CFGM and the corresponding volume resistivity changes from 1016Ω·cm of one side to 105Ω·cm of another side.Bending tests indicate that the ABS rich side shows better bending strength,which is 6% lower than neat ABS only;and that the filler rich side show good bending modulus,which is 20% higher than neat ABS.The experimental facts demonstrate that CFGM can effectively match the mechanical performance with conductive performance of the conductive composites.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2010年第6期146-151,共6页
Acta Materiae Compositae Sinica
基金
北京市教委人才强教中青年骨干教师培养计划资助项目(PXM2009-014213-073628)
关键词
梯度功能材料
复合
导电
制备
性能
functionally gradient materials（FGM）
composite
conductive
preparation
performance
作者简介
通讯作者：温变英，教授，主要从事聚合物基梯度功能材料及高分子材料功能化改性研究Email：wenbianying@tsinghua．org．cn
