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- 저자 : Ipek Yalcin-Enis (검색결과 1 건)
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Semih Ozkur,Hande Sezgin,Ipek Yalcin-Enis 한국섬유공학회 2022 Fibers and polymers Vol.23 No.5
Today, depending on the interest in finding ways to reduce dependence on fossil raw materials, the search foralternative bio-based materials to these raw materials is increasing. In this respect, thermoset resin composite materials,which are relatively difficult to recycle and leave large amounts of waste behind, draw attention when it comes tosustainability. This situation highlights the importance of the studies carried out to use bio-based thermoset resins in the mosteffective way, instead of petroleum-based resins. For the biocomposites produced in this study, a more sustainable resinsystem is optimized by adding acrylated epoxized soybean oil (AESO) to epoxy resin. Jute fabric reinforced composites areproduced by vacuum infusion method, and the effect of adding different amounts of AESO (0, 30, 50, 70, 100 % wt.) toepoxy resin on the properties of the composite is examined by changing the curing (20 °C, 90 °C), and post-curing (120 °C)temperatures. Charpy and drop-weight impact resistance, flexural and tensile strength properties are tested, as well asmeasuring fiber weight ratio, water absorption rate and water contact angle of the samples. The results show that the impactresistance gradually decreases with curing and post-curing processes especially in samples containing 0-50 % AESO resinwhile the flexural strength increases by heat treatment. On the other hand, there is an increment in elastic modulus of pureepoxy samples with curing at 90 ° and post-curing at 120 °C. The water absorption rates of almost all samples have beenreduced by heat treatment and the hydrophobicity of the samples including more than 50 % AESO increases with curing andpost-curing processes.
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