摘要
文章研究碳纤维(CF)/聚氯乙烯(PVC)复合材料的力学性能和热学性能。研究表明,当CF的质量分数不超过12%时,CF能够均匀分布于PVC基体中,从而使CF/PVC复合材料的力学性能和热学性能提高。CF的质量分数继续增加,CF/PVC复合材料的弯曲强度、冲击强度和压缩强度均先增大后降低,导热系数和维卡软化温度(VST)不断增加,热膨胀系数逐渐降低。CF提高了CF/PVC复合材料的导热性能、VST、体积稳定性以及热力学性能。当CF的质量分数为12%时,CF/PVC复合材料的综合性能最好,此时CF分布均匀,与PVC相比,20℃时的弯曲强度、冲击强度和压缩强度分别提高45.2%、44.0%和132.1%,导热系数增大57.4%,VST提高4.3℃,热膨胀系数降低70.4%。70℃时的弯曲强度、冲击强度和压缩强度分别是PVC的2.04、1.60、2.40倍,80℃时的弯曲强度、冲击强度和压缩强度分别是PVC的2.02、1.61、2.51倍。
The article investigated the mechanical and thermal properties of carbon fiber(CF)/polyvinyl chloride(PVC)composites.The results showed that when the mass fraction of CF did not exceed 12%,CF could be evenly distributed in the PVC matrix,thereby improving the mechanical and thermal properties of CF/PVC composites.As the mass fraction of CF continued to increase,the flexural strength,impact strength,and compressive strength of CF/PVC composites first increased and then decreased.The thermal conductivity and the Vicat softening temperature(VST)increased,and the coefficient of thermal expansion gradually decreased.CF improved the thermal conductivity,VST,volume stability and thermodynamic properties of CF/PVC composites.When the mass fraction of CF was 12%,the comprehensive performance of CF/PVC composites was the best,with CF distribution being uniform.The flexural strength,impact strength,and compressive strength at 20℃increased by 45.2%,44.0%and 132.1%,respectively.The thermal conductivity increased by 57.4%,the VST increased by 4.3℃,and the thermal expansion coefficient decreased by 70.4%compared with PVC.Additionally,the flexural strength,impact strength,and compressive strength at 70℃were 2.04,1.60,2.40 times that of PVC,respectively,and at 80℃,they were 2.02,1.61,2.51 times that of PVC,respectively.
作者
韩荣
王云鹤
HAN Rong;WANG Yunhe(Shanxi Vocational University of Engineering Science and Technology,Taiyuan 030000,China;School of Civil Engineering and Transportation,Guangzhou University,Guangzhou 510006,China)
出处
《塑料科技》
北大核心
2025年第9期78-82,共5页
Plastics Science and Technology
基金
山西省科技战略研究专项课题(202204031401128)。
