Effects of carbon nanotubes and its functionalization on the thermal and flammability properties of polypropylene wood flour composites

Fu, Shenyuan and Song, Pingan and Yang, Haitang and Jin, Yongming and Lu, Fengzhu and Ye, Jiewang and Wu, Qiang (2010) Effects of carbon nanotubes and its functionalization on the thermal and flammability properties of polypropylene wood flour composites. Journal of Materials Science, 45 (13). pp. 3520-3528. ISSN 0022-2461

Abstract

In this article, pristine carbon nanotubes (CNTs) and hydroxylated CNTs (CNT-OH) were employed to enhance the thermal stability and flame retardancy of polypropylene (PP)/wood flour composites (WPC) compatibilzed by maleic anhydride-grafted polypropylene (PP-g-MA). Incorporating 10 wt% PP-g-MA only enhanced the mechanical and thermal properties to some extent, but did not improve the flame retardancy of WPC. Thermogravimetric analysis (TGA) showed that the thermal stability of WPC was further increased with the addition of CNTs or CNT-OH and the increase of their loading level. Cone calorimeter measurements suggested that CNTs and CNT-OH could effectively reduce the peak heat release rate (PHRR) of WPC, and the flame retardancy properties reached the optimum value when both of their loading was 1.0 wt%, for instance, a reduction in PHRR by 16.7% and 25% for CNTs and CNT-OH, respectively. In addition, CNT-OH conferred better flame retardancy on WPC relative to pristine CNTs due to the better interfacial adhesion with wood flour and PP matrix, which was evidenced by scanning electron microscopy (SEM) observations.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 08 Aug 2019 22:18
Last Modified: 09 Aug 2019 02:01
Uncontrolled Keywords: flame retardancy, heat release rate, maleic anhydride, wood flour, cone calorimeter
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified
Socio-Economic Objective: B Economic Development > 86 Manufacturing > 8699 Other Manufacturing > 869999 Manufacturing not elsewhere classified
Identification Number or DOI: 10.1007/s10853-010-4394-7
URI: http://eprints.usq.edu.au/id/eprint/35573

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