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- 저자 : Menghe Miao (검색결과 1 건)
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Manufacture and Characterization of hemp-Acrodur Biocomposites: Variation of Process Parameters
Mohammad S Islam,Menghe Miao 한국섬유공학회 2022 Fibers and polymers Vol.23 No.8
In this study, hemp fibre reinforced Acrodur resin biocomposites were manufactured using nonwoven hemp fibremats by varying a range of processing parameters such as Acrodur solution to dispersion ratio, relative humidity, curing time,and temperature. Dry fibre mats using Acrodur solution to dispersion ratio of 3:1 at a temperature of 160 oC and processingtime of 20 minutes were found to be optimum condition for the manufacture of the biocomposites. These optimumparameters gave the best combination of specific tensile strength (26.4 MPa-cm3/g) and specific Young’s modulus (4.4 GPacm3/g) with a density of 0.94 g/cm3. Thermogravimetric analysis (TGA) of the optimised biocomposites showedsimilarthermal stability when compared with pristine fibres. Contact angle measurements of the optimised biocomposites showedincreased hydrophobicity of the biocomposites than those of the pristine fibres. From the water immersion test, the path ofwicking of water molecules into the biocomposites was believed to be rather straight than tortuous and A 4-week waterimmersion test of the optimised biocomposites conceded about 43.5 % loss of tensile strength and 57.1 % loss of Young’smodulus which was believed to be due to wicking of the water molecules into the fibre of the biocomposites in a straight pathrather than a tortuous path.
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