文章摘要
Preparation and Properties of Surface Modified Carbon Nanotubes/Natural Rubber Composites
Received:March 03, 2020  Revised:March 04, 2020
DOI：10.12136/j.issn.1000-890X.2021.03.0191
Key Words: carbon nanotubes；dopamine；surface modification；NRL；NR；composite；dispersion；electrical property
Author NameAffiliationE-mail
Liu Pan Qingdao University of Science and Technology 1242734448@qq.com 
Cui Jiwen Qingdao University of Science and Technology  
Liu Ying Qingdao University of Science and Technology  
Wang Shan Qingdao University of Science and Technology  
Zhu Fengshuai Qingdao University of Science and Technology  
Han Jingjie* Qingdao University of Science and Technology hjj0812@163.com 
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Abstract:
      Dopamine modified MWCNTs（PCNT） were obtained by non-covalently modification of multi-walled carbon nanotubes（MWCNTs） with dopamine.PCNT be added into natural rubber latex（NRL） as fillers，PCNT/natural rubber（NR） composite was prepared，and its properties were studied.Transmission electron microscopy（TEM） analysis showed that the dispersion of MWCNTs in water was significantly improved after dopamine modification.The tensile strength and tear strength of PCNT/NR composites increased significantly，the tensile strength increased from 22.7 MPa to 28.4 MPa，and the tear strength increased from 26 kN·m-1 to 40 kN·m-1.PCNT with appropriate dasage of dopamine disperse more evenly in NR matrix，and the interaction between filler and rubber was stronger，good filler network structure was formed，and the surface resistance of PCNT/NR composite was significantly reduced.
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