摘要
石墨烯(GN)是一种新型的二维材料,是增强高分子复合材料的理想填料.采用液相剥离法(LPE),选择十二烷基硫酸钠(SDS)以及十二烷基苯磺酸钠(SDBS)为表面活性剂,制备了少层GN,对比了SDS及SDBS的剥离GN的效果.进一步,通过熔融共混法制备了高性能GN/PA6复合材料,研究了不同添加量的GN对PA6力学性能的影响.结果表明:SDBS有更好的剥离效果,当SDBS质量浓度为10 mg/mL时,通过超声剥离6 h,可得质量浓度为0.37 mg/mL的石墨烯分散液.当GN添加量为0.3%时,断裂强度达到最大值,比纯PA6提高了29.9%.
Graphene(GN) is a new two-dimensional material and an ideal filler for reinforced polymer composites.Few-layer GN was prepared by using liquid phase exfoliated method(LPE),and sodium dodecyl sulfate(SDS)and sodium dodecyl benzene sulfonate(SDBS)were selected as surfactants. Then the exfoliation effects of SDS and SDBS on GN were compared. Furthermore,high-performance GN/PA6 composites were prepared by melt blending,and the effects of different amounts of GN on mechanical properties of PA6 were studied. The results show that SDBS has better exfoliation effect. When SDBS mass concentration is 10 mg/mL,the graphene dispersion with the concentration of 0.37 mg/mL can be obtained by ultrasonic exfoliation for 6 h. When the addition amount of GN is 0.3%,the breaking strength reaches the maximum value,which is 29.9% higher than that of pure PA6.
作者
申志浩
陈瑨
王玉周
刘长春
SHEN Zhihao;CHEN Jin;WANG Yuzhou;LIU Changchun(Institute of Chemistry,Henan Academy of Sciences,Zhengzhou 450002,China;College of Materials Engineering,Henan University of Engineering,Zhengzhou 450001,China)
出处
《河南科学》
2022年第9期1422-1426,共5页
Henan Science
基金
河南省科学院基本科研业务费(220603021)
河南省科学院杰青人才培养项目(210403024)。
关键词
石墨烯
液相剥离法
聚酰胺6
力学性能
graphene
liquid phase exfoliated method
polyamide 6
mechanical property
