Effect of rice husk (treated/untreated) and rice husk ash on fracture toughness of epoxy bio-composite

被引:1
|
作者
Bisht, Neeraj [1 ]
Gope, Prakash Chandra [1 ]
机构
[1] G B Pant Univ Agr & Technol, Dept Mech Engn, Pantnagar 263145, Uttar Pradesh, India
关键词
rice husk; rice husk ash; fracture toughness; epoxy bio-composite; FILLED POLYPROPYLENE COMPOSITES; MECHANICAL-PROPERTIES; WATER-ABSORPTION; FIBER; POWDER;
D O I
10.1515/jmbm-2020-0018
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Present work studies the effect of particle reinforcement on fracture toughness of bio-composites. The filler used has been taken as rice husk. Epoxy resin has been taken as matrix material. Composites with varying filler loading of 10, 20, 30 and 40 wt.% were fabricated. The fracture toughness was seen to be increasing with increase in filler loading. However beyond 20% there was a decrease in fracture toughness with increase in filler loading. The effect of fibre treatment on toughness was also observed. Rice husk fibres pre-treated with NaOH were used. It was observed that fracture toughness further improved due to treatment. The increase in fracture toughness was significant. Fracture toughness increased from 1.072 to 2.7465 MPa root mm for 20% reinforcement and after treatment it increased to 2.876 MPa root mm. It was observed that concentration of treatment media also affects the fracture toughness. Further the effect of hybridization was observed by addition of rice husk ash as a secondary reinforcement. The fracture toughness of the resulting composites was remarkably higher than that of pure epoxy.
引用
收藏
页码:177 / 185
页数:9
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