بررسی کاربرد و استفاده از الیاف طبیعی مهندسی شده و ضایعات مواد پلیمری در کامپوزیت ها

نوع محتوی: طرح پژوهشی
Language: Persian
استان موضوع گزارش: تهران
شهر موضوع گزارش: تهران
Document ID: R-1068190
Publish: 16 February 2019
دسته بندی علمی: علوم کشاورزی
View: 250
Pages: 64
Publish Year: 1385

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Abstract:

This study investigates the effect of maleic anhydride polypropylene (MAPP) addition as a coupling agent at four levels and also the type of cellulosic materials as a reinforcing component on processing and mechanical properties of modified Populus deltoides fiber and flour/ polypropylene composites. The results indicate that the interfacial bond between reinforcing fiber/ flour and the matrix show great influence on the mechanical properties of composites. Furthermore it has been demonstrated that the addition of coupling agent during processing significantly improves the mechanical properties of fiber/ flour polypropylene composites. The results of this investigation indicates that the highest the mechanical properties of composites are as follow; The mechanical properties of the poplar fiber with 2% MAPP is higher than poplar flour without MAPP, which proves that the addition of functional group C=O acts as a good bonding agent. The notched Impact Izod strenght value of poplar fiber with 2% MAPP is less than pure PP. But it is higher than other treatments. The results indicate that the interfacial bond between reinforcing fibers and flour with polymer matrix modified MAPP play a significant role in improving the measured mechanical properties of the composites. Paulownia wood: In this study using of Paulownia wood fibers as a material for wood fiber/ plastics composites was investigated. The effects of extractive treatments of Paulownia wood fibers in two levels of exteractives and three levels of coupling agents ( 0 , 1.5 and 2.5 percentges). The results showed that the best treatment of Mechanical properties were achived at 2.5% of coupling agent and without extractives materials. Key words: Composites, Poplar, Paulownia, MAPP, Mechanical Strenght.