“枝干”形貌多尺度、多层次非织造复合材料对超细颗粒过滤性能研究

批准号:
51708409
项目类别:
青年科学基金项目
资助金额:
25.0 万元
负责人:
滕堃玥
依托单位:
学科分类:
E1005.空气污染控制
结题年份:
2020
批准年份:
2017
项目状态:
已结题
项目参与者:
杨彩云、单明景、马美君、伍海明、韩乔乔
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中文摘要
非织造过滤材料以其成本低、过滤效果好等优势在空气过滤领域引起了广泛关注,但其基于筛分为主的过滤机制容易造成“对超细颗粒拦截效率与气体通量相互制约”的问题。本项目拟通过静电纺丝-同步喷射技术制备具有“枝干”形貌的超薄碳纳米管-壳聚糖(f-MWCNTs-CS)复合膜作为功能层,以聚丙烯(PP)熔喷非织造材料为支撑层,构建多尺度、多层次的复合过滤材料,实现针对超细颗粒(粒径<0.1μm)的高过滤效率与高透气量的协同设计。研究静电纺丝-同步喷射技术的工艺条件与f-MWCNTs-CS功能层结构、形貌的耦合关系,探索f-MWCNTs-CS/PP复合过滤材料的结构、形貌对超细颗粒过滤性能的影响规律,掌握复合过滤材料结构、形貌的调控方法,并揭示其对超细颗粒的过滤机制。项目将丰富非织造复合过滤材料结构设计的理论依据和实验基础,对于促进高效、低成本及环境友好的大气污染治理技术发展具有重要的理论价值和现实意义。
英文摘要
Nonwoven filter materials have received a great deal of attention in air filtration field due to its advantages, such as low cost, good filtering effect. However, filtering mechanism based on sieving always results in the contradiction between the trapping efficiency of ultrafine particles and the gas flux. To achieve high filtering efficiency for ultrafine particles (less-than 0.1μm) and high air permeability, we plan to build multi-scale, multi-level composite filter materials. We will prepare the functionalized multi-walled carbon nanotubes-chitosan (f-MWCNTs-CS) nanofiber membranes with branch-like structure via using high-pressure assisted spraying or electrospraying method as the function layer, and polypropylene (PP) melt-blown nonwoven fabrics will be taken as support layer. In this project, we will study the coupling between the parameters of spraying method and the morphology of f-MWCNTs-CS function layer, probe the effects of the morphology of f-MWCNTs-CS/PP filter materials on the filtering performance for ultrafine particles, master the method of controlling the composite morphology, and reveal the filtration mechanisms of composite filter materials. This project will provide the theoretical and experimental foundation of fabricating the nonwoven filter materials, and have great value in theory and practical significance to promote the development of efficient, low-cost and environmentally-friendly air pollution treatment technology.
针对纳米纤维膜作为过滤材料存在的过滤精度低和通量受限的问题,本项目分别采用亲水性材料涂覆、无机纳米颗粒表面修饰以及碳纳米管表面嵌入组装等方式提高了纤维膜过滤材料的过滤和渗透性能。研究了在亲水改性的聚丙烯腈(PAN)纳米纤维膜表面引入不同浓度壳聚糖(CS)的过渡层后,PAN/CS复合膜性能的演化规律及其复合膜分离、渗透性能的增强机制;探索并优化半包覆结构的二氧化钛/介孔碳纳米纤维复合膜的制备工艺,分析了复合膜对有机染料(罗丹明B)的高效催化特性。在上述研究成果的基础上,分别采用三种不同方法(静电喷涂、高压喷枪以及直接共混)将具有高比表面积的羧基化多壁碳纳米管(f-MWCNTs)引入电纺CS纳米纤维膜中,构建出一种兼具高通量及高过滤效率的“枝干”结构f-MWCNTs/CS复合膜,并探究了其对有机染料及固体颗粒物的过滤性能及其影响机理。
期刊论文列表
专著列表
科研奖励列表
会议论文列表
专利列表
High-performance forward osmosis membrane with ultra-fast water transport channel and ultra-thin polyamide layer
具有超快水传输通道和超薄聚酰胺层的高性能正渗透膜
DOI:10.1016/j.memsci.2020.118611
发表时间:2020-08
期刊:Journal of Membrane Science
影响因子:9.5
作者:Feiyue Yu;Haiting Shi;Jie Shi;Kunyue Teng;Zhiwei Xu;Xiaoming Qian
通讯作者:Xiaoming Qian
Lightweight sandwich fiber-welded foam-like nonwoven fabrics/graphene composites for electromagnetic shielding
用于电磁屏蔽的轻质三明治纤维焊接泡沫状非织造布/石墨烯复合材料
DOI:10.1016/j.matchemphys.2019.04.085
发表时间:2019-06-15
期刊:MATERIALS CHEMISTRY AND PHYSICS
影响因子:4.6
作者:Liu, Liangsen;Wang, Haibo;Xu, Zhiwei
通讯作者:Xu, Zhiwei
TiO2 seeded on nitrogen-doped porous carbon nanofibers for superior electrochemical performance as freestanding anodes of lithium-ion batteries
TiO2 接种在氮掺杂多孔碳纳米纤维上,作为锂离子电池的独立阳极具有优异的电化学性能
DOI:10.1088/1361-6528/aae12c
发表时间:2018-10
期刊:Nanotechnology
影响因子:3.5
作者:Wang Wei;Liang Yaohui;Li Fengyan;Li Nan;Xu Zhiwei;Wang Haibo;Jing Miaolei;Teng Kunyue;Niu Jiarong;Fu Hongjun
通讯作者:Fu Hongjun
Carbon-coated SnO2@carbon nanofibers produced by electrospinning-electrospraying method for anode materials of lithium-ion batteries
静电纺丝-电喷雾法制备碳包覆SnO2@碳纳米纤维用于锂离子电池负极材料
DOI:10.1016/j.matchemphys.2018.11.066
发表时间:2019-02-01
期刊:MATERIALS CHEMISTRY AND PHYSICS
影响因子:4.6
作者:Wang, Wei;Liang, Yaohui;Li, Fengyan
通讯作者:Li, Fengyan
Improvement for interface adhesion of epoxy/carbon fibers endowed with carbon nanotubes via microwave plasma-enhanced chemical vapor deposition
通过微波等离子体增强化学气相沉积提高碳纳米管环氧树脂/碳纤维的界面粘合力
DOI:10.1002/pc.24843
发表时间:2018
期刊:Polymer Composites
影响因子:5.2
作者:Zhang Ce;Liu Liangsen;Xu Zhiwei;Lv Hanming;Wu Ning;Zhou Baoming;Mai Wei;Zhao Lihuan;Tian Xu;Guo Xingfeng
通讯作者:Guo Xingfeng
国内基金
海外基金
