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首页> 外文期刊>Indian Forester >Effect of Gamma Irradiation on Thermal and Tensile Properties of Teak Wood Flour/Cotton Stalk Flour and Polypropylene Hybrid Composites
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Effect of Gamma Irradiation on Thermal and Tensile Properties of Teak Wood Flour/Cotton Stalk Flour and Polypropylene Hybrid Composites

机译：γ辐射对柚木粉/棉秸秆粉和聚丙烯杂交复合材料热和拉伸性能的影响

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摘要

Hybrid composites of teak wood flour/cotton stalk flour and polypropylene were fabricated at a fixed plastic to fiber ratio of 80:20 and variable proportions of the two fibres by extrusion method. Maleic anhydride grafted polypropylene (MAPP) was usedas the coupling agent. The tensile specimens of neat PP and hybrid composites were prepared by injection moulding method. Hybrid composites were subjected to 25 kGy dose of gamma radiation. The tensile strength was estimated using Universal Testing Machine (UTM). Thermal analysis of the samples has been carried out at a heating rate of 10°C min~(-1), from 50°C temperature to 500°C, in an inert atmosphere. The outcome of gamma irradiation on thermal and tensile properties was analysed. A notable improvement in tensile strength and tensile modulus has been observed, with the modest decline in thermal stability. The improvement in tensile strength of hybrid composite as compared to neat PP, can be attributed to the cross linking effects of both the compatibiliser and the gamma irradiation.
机译：柚木木粉/棉茎粉和聚丙烯的杂交复合材料以固定的塑料制成80:20的纤维比和通过挤出方法可变比例。马来酸酐接枝的聚丙烯（MAPP）被使用偶联剂。通过注射成型方法制备纯PP和杂化复合材料的拉伸试样。杂交复合材料经过25kGy剂量的γ辐射。使用通用试验机（UTM）估计拉伸强度。样品的热分析已经以10℃min〜（-1），50℃温度至500℃，在惰性气氛中以10℃的加热速率进行。分析了热和拉伸性能的γ辐射的结果。已经观察到拉伸强度和拉伸模量的显着提高，热稳定性的温度下降。与纯PP相比，杂化复合材料的抗拉强度的改善可以归因于偶联剂和γ辐射的交联效应。

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