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The Mechanical and Thermal Properties of MWCNT/ZnO/Polyethylene Composites

Xu Li, Ling Yuan, Ying Jun Zhang, You Li Yao, Chi Hui Tsou, Ya Li Sun
Published: 18 October 2021

Abstract: In this paper, multiwall carbon nanotube-ZnO (MWCNT/ZnO) was melt-blended with polyethylene (PE) by a Haake-Buchler Rheomixer. The mechanical properties, thermal stability and dispersion degree of the composite materials was characterized. Differential scanning calorimetry, X-ray diffraction analysis, thermogravimetry, tensile test and SEM were carried out. The results showed that with the addition of MWCNT/ZnO, the crystallinity and thermal degradation temperature of PE changed. 0.2phr MWCNT/ZnO/PE exhibited crystallinity that was 10% higher than PE. With the addition of MWCNT/ZnO, the tensile strength of PE decreased gradually, but the elongation at break increased first and then decreased. When MWCNT/ZnO content is 0.2phr, the elongation at break of the composite is close to 532.21%, which is 116% higher than that of pure PE.
Keywords: High-Density Polyethylene / Multiwall Carbon Nanotube / Nanocomposite Material / Zinc Oxide

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