超临界流体快速膨胀法分散氮化硼及防止其再团聚的研究  

Rapid Expansion of Supercritical Suspension to Exfoliate Boron Nitride and Inhibition of Re-agglomeration of Boron Nitride Nanosheets

作　　者：孙长久 王腾飞 郭红革 赵健[1,2,3] SUN Changjiu;WANG Tengfei;GUO Hongge;ZHAO Jian(College of Polymer Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;School of Light Industry Science and Engineering,Qilu University of Technology,Jinan 250353,China;State Key Laboratory of Polymer Materials Engineering,Chengdu 610065,China)

机构地区：[1]青岛科技大学高分子科学与工程学院,山东青岛266042 [2]齐鲁工业大学轻工科学与工程学院,山东济南250353 [3]四川大学高分子材料工程国家重点实验室,四川成都610065

出　　处：《青岛科技大学学报（自然科学版）》2019年第4期73-77,共5页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：山东省重点研发计划项目(2017GGX20132);国家自然科学基金资助项目(51873096);山东省自然科学基金项目(ZR201807060363,ZR2019MEM001);高分子材料工程国家重点实验室开放课题项目(sklpme2019-4-29);有机硅化学及材料技术教育部重点实验室开放基金项目(KFJJ2019004)

摘　　要：以六方氮化硼(h-BN)为原料,利用超临界状态下二氧化碳快速膨胀(RESS)来分散氮化硼,电子显微镜表征证实,RESS可以有效实现氮化硼的分散,制得氮化硼纳米片。同时,为了解决氮化硼分散后再团聚问题,提出对氮化硼表面进行高分子包覆法防止再团聚,实验证实起到良好的效果。Hexagonal boron nitride nanosheets (BNNS) have great potential in many applications due to their excellent properties. However, the production of large-scale BNNSs remains a great challenge. In this paper, boron nitride (BN) is used as a raw material to obtain boron nitride nanosheets by rapid expansion of supercritical suspension (RESS) of carbon dioxide. The degree of exfoliation were studied by electron microscopy. It was found that the RESS effectively exfoliated BN to obtain boron nitride nanosheets. In order to prevent re-agglomeration, the polymer-wrapping decorating method is proposed. The experimental results showed the method is very effective.

关 键 词：氮化硼纳米片 超临界流体 分散 快速膨胀 

分 类 号：O613[理学—无机化学]