CNTs/PBS复合材料的制备及性能研究

doi:10.11896/cldb.19080133

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Abstract Polybutylene succinate (PBS) was as a matrix material, and carbon nanotubes (CNTs) was as a reinforcing materials. Through wet processing technology, surface modified of carboxylated carbon nanotube (CNTs_-COOH) with silane coupling agent KH570 and polyvinyl pyrrolidone(PVP) were successfully obtained, and then the different kinds of CNTs and PBS were prepared by melt blending using twin-screw extruder. The interfacial compatibility, thermal properties, crystallization properties and mechanical properties of the composites were investigated by SEM, WAXD, DSC, POM, TG and universal testing machines and cantilever beam impact testing machine. The results showed: compared with pure PBS, the agglomeration of CNTs/PBS composites was obvious, and their crystallinity, tensile strength, impact strength and flexural strength were increased by 7.77%, 3.1%, 13.2% and 15.8%, and elongation at break was decreased by 14.2%. After modification, the performance of CNTs_-COOH-KH570/PBS composites was better than that of CNTs_-COOH-PVP/PBS composites. The dispersion morphology of CNTs_-COOH-KH570/PBS composites was improved, and the crystallinity, tensile strength, impact strength and flexural strength were increased by 12.23%, 11.8%, 25.8% and 24.3%, and elongation at break was decreased by 8.1%, compared with PBS. Meanwhile, the thermal stability of PBS composites showed slightly increase with the introduction of CNTs. Moreover,compared with pure PBS, the volume resistivity of CNTs/PBS composites decreased by 56.6%, and the conductivity increased by one order of magnitude, while, the volume resistivity of CNTs_-COOH, CNTs_-COOH-KH570 and CNTs_-COOH-PVP modified PBS composites decreased by 59.8%, 60.9% and 62.5%, respectively. And, compared with pure PBS, the electrical conductivity for all of PBS-based composites modified with surface treated CNTs increased by one order of magnitude.

Key words： polybutylene succinate carbon nanotube crystallization performance mechanical properties electrical properties

Published: 06 November 2020

CLC number:

TB332

Fund:National Natural Science Foundation of China (51703121),the China Postdoctoral Science Foundation Project (2018T111050).

About author:: Qifeng Zhang, graduate student, majored in material processing engineering, School of Materials Science and Engineering, Shaanxi University of Technology, research direction is biodegradable polymer composites and electronic shielding properties.He has published more than 4 journal papers as the first author.
Shikui Jiareceived his Ph.D. degree from South China University of Technology, China in 2014. He serves currently as an associate professor and master supervisor of materials science and engineering in Shaanxi University of Technology, Shaanxi, China. He acquired the award of Excellent Postdoctoral of SCUT and is also a reviewer of several academic journals. He has published more than 50 journal papers as the first author or corresponding author, applied 11 national invention patents and 6 of them were authorized. His research interests include polymer functional materials and structures, polymer-based energy materials, polymer advanced processing and theories

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	ZHANG Qifeng
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	JIA Shikui
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Cite this article:

ZHANG Qifeng,WANG Zhong,JIA Shikui, et al. Preparation and Properties of Carbon Nanotubes/Polybutylene Succinate Composites[J]. Materials Reports, 2020, 34(20): 20152-20158.

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http://www.mater-rep.com/EN/10.11896/cldb.19080133 OR http://www.mater-rep.com/EN/Y2020/V34/I20/20152

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