Fabrication;;mechanical and electrical study of sandwich biocomposites of epoxy resin of 1,1' -bis (3 -methyl-4-hydroxyphenyl)cyclohexane

摘要

"A 70 % matrix of reinforcement and 20% TEA of the matrix are used in the present investigation. Jute-wild almond (JWA-EMCT-20);;jute-coconut (JCN-EMCT-20);;jute-groundnut(JGN-EMCT-20);;jute-wheat(JW-EMCT-20);;jute-banana(JBN-EMCT-20) and jute-sugarcane (JSC-EMCT-20) sandwich biocomposites of epoxy resin of l,l'-bis(3-methyl-4-hydroxy phenyl)cyclohexane have been fabricated by hand layup technique at 150 C and under 27.6 MPa pressure for 4 h using a 20% triethylamine as a curing agent. Sandwich biocomposites possess 6-26 MPa tensile strength;;2.8-53 MPa flexure] strength;;0.5-1.9 kV/mm electric strength and 1.4×10~(10) - 2.7×l0~(15) ohm.cm volume resistivity. JWA-EMCT-20 and JW-EMCT-20 showed better tensile strength;;while JWA-EMCT-20;;JCN-EMCT-20 and JBN-EMCT-20 showed better flexural strength due to their better stiffness property. Sandwich biocomposites possess fairly good electric strength (except JW-EMCT-20 and JBN-EMCT-20) and excellent volume resistivity (JW-EMCT-20 and JCN-EMCT-20) indicating their usefulness for low load bearing applications especially for housing units and as insulating materials.