Mechanical Properties and VOC Emission of Hemp Fibre Reinforced Polypropylene Composites: Natural Freezingmechanical Treatment and Interface Modification

다국어 초록 (Multilingual Abstract)

In this study, the effects of natural freezing-mechanical treatment and interface modification on the mechanicalproperties and VOC emissions of hemp fibre-reinforced polypropylene composites were investigated. To evaluate theinfluence of natural freezing-mechanical treatment on fibres and composites, several tests were performed. Natural freezingmechanicaltreatment of HF enhanced the mechanical properties and reduced the VOC emissions of HF/PP compositescompared with untreated composites. After the degumming treatment, HF was treated with urea and KH-550, and themechanical properties of the modified composites were better than those of the unmodified composites. Compared with thetensile strength, flexural strength and impact strength of the unmodified composites, the mechanical properties of the ureamodifiedcomposites were enhanced by 16.45 %, 17.32 % and 13.23 %, respectively; the mechanical properties of thecomposites modified by the coupling agent KH-550 were increased by 19.53 %, 20.40 % and 11.19 %, respectively. The totalVOC emissions of modified HF/PP composites were lower than those of the unmodified composites. The obtained resultsdemonstrated that natural freezing-mechanical treatment is an effective fibre degumming method. Combined with interfacemodification, the composite has the characteristics of low VOC emissions, high strength, and good interface bonding.

참고문헌 (Reference)

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