Effects of Maleic Anhydride Grafted Polypropylene on the Physical, Mechanical and Flammability Properties of Wood-flour/Polypropylene/Ammonium Polyphosphate Composites 


Vol. 22,  No. 4, pp. 1137-1144, Apr.  2021
10.1007/s12221-021-0202-z


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  Abstract

In this study, maleic anhydride grafted polypropylene (MAPP) was incorporated as coupling agent in the woodflour/ polypropylene/ammonium polyphosphate composites (flame-retardant WPCs). The effects of MAPP content (5 wt.%, 10 wt.% and 15 wt.%) on the physical, mechanical and flammability properties of flame-retardant WPCs were investigated. The water soaking tests showed that the incorporation of MAPP could reduce the hygroscopicity of flame-retardant WPCs. The mechanical properties of WPCs were evaluated by three-point bending tests, unnotched Izod impact strength tests, and dynamic mechanical analysis. The results showed that the flame-retardant WPC containing 10 wt.% MAPP (WPC/APP/ MAPP-10 %) performed the best flexural properties, the highest impact strength, E value, and tan 灌 at room temperature. The limiting oxygen index (LOI) tests and cone calorimetry tests showed that the incorporation of 10 wt.% MAPP endowed the flame-retardant WPC with the highest LOI value, the lowest peak-heat release rate, total heat release, CO/CO2 weight ratio and total smoke release. Moreover, the characterization of the WPCs combustion residues performed that WPC/APP/ MAPP-10 % had the most complete carbonaceous structure with the highest graphitization degree after combustion. In general, the addition of 10 wt.% MAPP could impart the flame-retardant WPC with the optimum physical-mechanical properties and flame-retardant performance.

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  Cite this article

[IEEE Style]

W. Wang, H. Chen, J. Li, "Effects of Maleic Anhydride Grafted Polypropylene on the Physical, Mechanical and Flammability Properties of Wood-flour/Polypropylene/Ammonium Polyphosphate Composites," Fibers and Polymers, vol. 22, no. 4, pp. 1137-1144, 2021. DOI: 10.1007/s12221-021-0202-z.

[ACM Style]

Wen Wang, Hui Chen, and Jianzhang Li. 2021. Effects of Maleic Anhydride Grafted Polypropylene on the Physical, Mechanical and Flammability Properties of Wood-flour/Polypropylene/Ammonium Polyphosphate Composites. Fibers and Polymers, 22, 4, (2021), 1137-1144. DOI: 10.1007/s12221-021-0202-z.

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