离子液体改性石墨烯的制备及其对ABS复合材料导热性的影响
Preparation of ionic liquid modified graphene and its effect on thermal conductivity of ABS composites
王一杰 1张金镯 1龙佳朋 1梁兵1
作者信息
- 1. 沈阳化工大学 材料科学与工程学院,辽宁 沈阳 110142
- 折叠
摘要
通过绿色直接机械球磨法,将石墨粉(G粉)与1-己基-3-氨乙基咪唑四氟硼酸盐离子液体([HAIM]BF4)相结合,制备了离子液体功能改性石墨烯(G@ILs).将G@ILs和丙烯腈-丁二烯-苯乙烯共聚物(ABS)采用熔融共混法制备了G@ILs/ABS复合材料.通过FTIR、XPS、XRD、拉曼光谱、SEM、TEM和EDS对G@ILs进行表征,对ABS复合材料的性能和形貌进行了测试和表征.结果表明,[HAIM]BF4通过阳离子-π相互作用对石墨烯进行了有效修饰,保持了石墨烯的结构完整性.G@ILs的引入使G@ILs/ABS复合材料的力学性能得到了显著改善.G@ILs质量分数为1.0%时,制备的G@ILs/ABS复合材料(记为1.0%G@ILs/ABS,下同)的拉伸强度和弯曲模量为42.4 MPa和2145.1 MPa,分别比ABS提高了8.36%和12.76%.此外,1.0%G@ILs/ABS的导热系数为0.249 W/(m·K),比ABS提高了21.5%.
Abstract
Ionic liquid modified graphene(G@ILs),prepared from graphite powder(G powder)and 1-hexyl-3-aminoethylimidazolium tetrafluoroborate ionic liquid[HAIM]BF4 via a green ball milling method,was blended with acrylonitrile-butadiene-styrene copolymer(ABS)by melt blending method to synthesize G@ILs/ABS composites.The G@ILs was characterized by FTIR,XPS,XRD,Raman spectroscopy,SEM,TEM and EDS.the properties and morphology of ABS composites were tested and characterized.The results showed that[HAIM]BF4 effectively modified graphene through cation-π interactions and maintained the structural integrity of graphene.The G@ILs/ABS composites exhibited considerable improvement in mechanical properties due to the introduction of G@ILs.When the mass fraction of G@ILs was 1.0%,the tensile strength and bending modulus of G@ILs/ABS composites(named 1.0%G@ILs/ABS)were 42.4 MPa and 2145.1 MPa,8.36%and 12.76%higher than those of ABS.In addition,the thermal conductivity of 1.0%G@ILs/ABS was 0.249 W/(m·K),which was 21.5%higher than that of ABS.
关键词
离子液体/石墨烯/ABS/复合材料/导热性/功能材料Key words
ionic liquids/graphene/ABS/composite materials/thermal conductivity/functional materials引用本文复制引用
基金项目
辽宁特聘教授基金(512003007021)
出版年
2024
NETL
NSTL
万方数据