CNTs/ABS复合材料流变及拉伸性能研究  

Study on Rheological and Tensile Properties of CNTs/ABS Composites

作　　者：张堃 辛勇[1] ZHANG Kun;XIN Yong(School of Mechanical and Electrical Engineering,Nanchang University,Nanchang 330031,China)

机构地区：[1]南昌大学机电工程学院,南昌330031

出　　处：《高分子通报》2022年第3期45-53,共9页Polymer Bulletin

基　　金：国家自然科学基金(51365038)。

摘　　要：以碳纳米管(CNTs)和丙烯腈-丁二烯-苯乙烯(ABS)为原料,通过熔融共混法制备CNTs/ABS复合材料,利用旋转流变仪研究其流变行为、拉伸试验机研究其拉伸性能,并得出部分适宜的加工工艺以期为今后实际生产提供参考。结果表明:复合材料的黏度随温度的上升而下降,且有明显的剪切变稀行为;CNTs的加入会提高复合材料的流动性;CNTs能降低复合材料的储能模量、损耗模量、复数黏度,当CNTs含量为1%(wt)时均为最低,此时复合材料的可塑性最好;复合材料的拉伸强度先随CNTs含量增加而增加,在超过3%(wt)后未现明显影响;断裂伸长率随CNTs含量增加而表现为先提高后降低,3%(wt)时达到峰值。Using carbon nanotubes(CNTs) and acrylonitrile-butadiene-styrene(ABS) to produce the CNTs/ABS composite materials by melt blending method. The rheological behavior of the CNTs/ABS composite was studied by rotary rheometer and the tensile properties was studied by tensile testing machine. The suitable processing parameters can be analyzed by experimental results in order to provide reference for factories in the future. The results show that the viscosity of the composites decreases with the increase of temperature, and the shear thinning behavior is obvious. The addition of CNTs can improve the fluidity of composites. CNTs can reduce the energy storage modulus, loss modulus and complex viscosity of the composites. When the content of CNTs is 1%(wt), all the values are the lowest, and the plasticity of the composites is the best;the tensile strength of the composite material increases with the rise of the CNTs content, and it is hardly affected by the continuous increase of the CNTs content after 3%(wt);the elongation at break varies increase at first and then decrease with the rise of the content of CNTs, and reaching the peak at 3%(wt).

关 键 词：碳纳米管 熔融共混 流变行为 拉伸强度 

分 类 号：TB332[一般工业技术—材料科学与工程]