化学工程2025，Vol.53Issue(11)：38-42,79,6.DOI:10.3969/j.issn.1005-9954.2025.11.007
焦磷酸钠辅助液相剥离石墨烯的制备及测试
Preparation and test of sodium pyrophosphate assisted liquid phase exfoliating graphene
摘要
Abstract
Using graphite powder as raw material,GN(graphene)dispersion was prepared by sonication in a solution of NMP(N-methyl-2-pyrrolidone)/sodium pyrophosphate.A brief study was conducted on the effects of sodium pyrophosphate concentration and ultrasound time on the concentration of GN dispersion.The morphology and structure of GN obtained under different conditions were analyzed using UV-Vis(UV Vis spectroscopy),SEM(scanning electron microscopy)and Raman spectroscopy.Then the obtained GN was introduced into a PET(polyethylene terephthalate)matrix,and GN/PET composite materials through melt extrusion injection molding to investigate the reinforcement effect of GN.The experimental results indicate that the addition of sodium pyrophosphate is beneficial for the detachment of GN,and the mass concentration of GN dispersion continuously increases with the increase of ultrasound time.When the mass ratio of sodium pyrophosphate to graphite powder is 2∶1,after ultrasonic treatment for 4 h,the was concentration of GN dispersion obtained can reach 0.080 mg/mL.The diameter of the obtained GN is relatively uniform,with dimensions ranging from 0.5 μm to 1.5 μm,and its defects are relatively low,with ID/IG value of 0.38.When GN addition amount is 0.3％,the fracture strength of GN/PET composite material is the highest,which is 12.5％higher than that of pure PET.关键词
石墨烯分散液/焦磷酸钠/液相剥离/聚酯复合材料Key words
graphene dispersion/sodium pyrophosphate/liquid phase exfoliation/PET composite material分类
能源科技引用本文复制引用
邹伟,孙婉茹,江浩庆,陈鹏,张孟良,黄河,李豪..焦磷酸钠辅助液相剥离石墨烯的制备及测试[J].化学工程,2025,53(11):38-42,79,6.基金项目
河南省科技攻关项目(242102230002) （242102230002）
河南省高层次创新人才项目(241823006) （241823006）
