Thermal and Mechanical Durability Analysis of Glass Fiber-Kenaf Fiber-PP Hybrid Composites Molded by Direct Fiber Feeding Injection Molding Method
The diverse application of natural fiber reinforced thermoplastic composites has attracted increasing attention due to recyclability and environmental concern.However,the long-term durability would have been compromised by the environmen-tal working conditions of the composites.The influence of environmental thermal fatigue effect with open-air moisture on me-chanical properties of direct fiber-fed injection-molded three different types of glass fiber-kenaf fiber-PP hybrid composites was investigated in the study.The thermal aging between 25℃to 80℃was carried out for 100 days.The environmental ag-ing influence on tensile modulus,tensile strength,and notch sensitivity was delineated in this work.As a result,it is shown that after thermal aging the tensile modulus of hybrid composites was increased significantly by 25%and 20%,respectively for 20 and 50 feeding speed of kenaf fiber roving,whereas tensile strength increased by about 5%and 15%,accordingly.Re-garding the tensile notched strength,it was found no significant effect by the aging,although notch sensitivity was negatively affected by the thermal aging.The potential changes in the microstructure of the composites due to the aging was evaluated by the XRD analysis.The thermo-gravimetric analysis was also accomplished to evaluate the composition of the hybrid speci-mens.With the specific condition of thermal aging of polypropylene hybrid composites,the mechanical properties might be improved by increasing the polymer crystallinity.
Glass fiber Kenaf fiber Direct fiber feeding injection molding Thermoplastic hybrid composites Mechanical properties
MIAH Md.Sohag YU Jianyong YANG Yuqiu YU Lichao
Key Laboratory of Textile Science&Technology,Ministry of Education,Donghua University,Shanghai 20162 College of Material and Textile Engineering,Jiaxing University,Jiaxing,Zhejiang,314001
国际会议
2021 Sino-Africa International Symposium on Textiles and Apparel (SAISTA2021)(2021中非纺织服装国际论坛)
线上
英文
289-293
2021-11-05（万方平台首次上网日期，不代表论文的发表时间）