摘要
本研究以二甲基亚砜(DMSO)/H_(2)O/KOH为溶剂,对芳纶纳米纤维(ANF)/氮化硼纳米片(BNNS)复合纸进行溶解,研究不同BNNS质量分数的ANF/BNNS复合纸的溶解速率差别,探究ANF/BNNS复合纸的微溶解规律。结果表明,纯ANF纸的拉伸强度为48.8 MPa,从25℃升高至70℃所需时间为6 s,溶解厚度为42.0μm,而ANF/BNNS复合纸(BNNS质量分数20%)的拉伸强度降低至34.5 MPa,从25℃升高至70℃仅需2 s,溶解时间为3 h,溶解厚度为52.5μm,较纯ANF纸的溶解厚度提升了25%,表明BNNS的加入会略微降低ANF/BNNS复合纸的机械强度,显著提升ANF/BNNS复合纸的导热性能,并促进ANF/BNNS复合纸的溶解。
In this study,DMSO/H_(2)O/KOH was used as the solvent to dissolve aramid nanofiber(ANF)/boron nitride nanosheet(BNNS)composite paper,to study the difference in the dissolution rate of ANF/BNNS composite paper with different BNNS contents,and to investigate the micro-dissolution law of ANF/BNNS composite paper.The results showed that the tensile strength of pure ANF paper was 48.8 MPa,the time required to increase from 25℃to 70℃was 6 s,and the dissolution thickness was 42.0μm,while the tensile strength of ANF/BNNS composite paper with BNNS content of 20%was reduced to 34.5 MPa,and the time required to increase from 25℃to 70℃was only 2 s.The dissolution time was 3 h,and the dissolution thickness was 52.5μm,which was 25%more than that of pure ANF paper.It was indicated that the addition of BNNS slightly reduced the mechanical strength of the ANF/BNNS composite paper,significantly improved the thermal conductivity of the ANF/BNNS composite paper,promoted the dissolution of the ANF/BNNS composite paper.
作者
姜皓明
黄吉振
刘玉新
刘梦雨
李凯
JIANG Haoming;HUANG Jizhen;LIU Yuxin;LIU Mengyu;LI Kai(Faculty of Chemical Engineering,Kunming University of Science and Technology,Kunming,Yunnan Province,650500;Yunnan Province Education Department Degradable Plastic Engineering Research Center,Kunming,Yunnan Province,650000)
出处
《中国造纸学报》
北大核心
2025年第4期93-100,共8页
Transactions of China Pulp and Paper
基金
云南省教育厅可降解塑料工程研究中心(KKPU202205001)
云南省中青年学术和技术带头人后备人才(202305AC160061)。
关键词
芳纶
芳纶纳米纤维
氮化硼纳米片
复合纸
微溶解
aramid
aramid nanofiber
boron nitride nanosheet
composite paper
micro-dissolution
