Electrically and thermally conductive performance of mesocarbon microbeads/cyanate ester resin composites
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摘要: 选取M22、M15和M23三种不同粒径中间相碳微球（MCMBs）作为填料，分别以10vol%、25vol%、40vol%和50vol%体积分数填充氰酸酯树脂（CE）制备了MCMBs/CE复合材料，通过SEM、XRD、拉曼光谱仪、导热仪、体积电阻仪分析了不同粒径的MCMBs/CE复合材料的性能。结果表明：三种球形粉体都具有石墨化结构，其中M22粉体球形度最好、石墨化程度最高（ID/IG=0.23）、体积电阻率最小。三种MCMBs粉体制备的MCMBs/CE复合材料的吸水性、导热性和导电性均随填充量的增加而增大，冲击强度则先增大后减小。其中以M22在40vol%填充率下所得MCMBs/CE复合材料的综合性能最优，吸水率为0.45%，冲击强度为23.6 kJ/m2，热导率达1.28 W/（m·K），体积电阻率达1.5 Ω·cm。Abstract: The mesocarbon microbeads (MCMBs) with different size and fabrication process (M22, M15 and M23) were fabricated cyanate ester resin (CE) (MCMBs/CE) composites with volume fraction of 10vol%, 25vol%, 40vol% and 50vol% of MCMBs. The MCMBs/CE composites were characterized by SEM, XRD, Raman spectrum, thermal analyzer and resistance instrument. The results indicate that all the three spherical powders have the graphitization structure. Compared to M15 and M23, the M22 filler shows a regular spherical particle, the highest carbonization (ID/IG=0.23) and the lowest volume resistivity. The moisture resistance, thermal conductivity and electrical conductivity of the MCMBs/CE composites are enhanced with the increasing of fillers volume fraction. While, the impact strength of composites presents a marginal reduction with further increase in filler content. The MCMBs/CE composite achieves a low water absorption of 0.45%, a high impact strength of 23.6 kJ/m2, a high thermal conductivity of 1.28 W/(m·K) and a low volume resistivity of 1.5 Ω·cm containing 40vol% M22 filler.
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期刊类型引用(1)
1. 曾鹏程，肖书平，杨柳，谈灵操，徐百平. 较宽压强响应范围和较高灵敏度的聚丙烯基电容式压力传感器的研制. 机电工程技术. 2025(03): 58-63 . 
百度学术
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