摘要
PM2.5和PM10污染物对人类健康造成巨大威胁,但传统的商业纤维难以实现对细颗粒物(PM)的高效过滤,亟需一种新型的过滤技术。利用静电纺丝技术考察了CS/PVP纤维纺丝的工艺参数,发现当CS/PVP溶液质量比为4∶5时,纤维表面光滑,并出现类蛛网结构的粗细纤维。利用纺丝膜材料进行PM过滤测试,结果显示:所获得的纳米纤维对PM具有较强的吸附力。在以香烟烟雾作为污染源的实验中,纳米纤维对PM2.5和PM10的过滤效率达99.85%、99.98%,并保持较低的压降损失。进一步采用该膜材料在杭州进行实地PM吸附试验,结果表明空气过滤膜在雾霾环境中能够保持较好的净化效果。
PM 2.5 and PM 10 pollutants are severe threats to public health, and it is difficult for traditional commercial fibers to achieve efficient filtration of particulate matter (PM), so a new filtration technology is needed urgently. Electrospinning technique was used to investigate electrospinning process parameters of CS/PVP nanofiber membrane. When 4∶5 mass ration of CV/PVP solution was used to manufacture spider-web-like nanofiber membrane, the fiber surface was smooth and the fiber with spider-web-like structure appeared. The spinning membrane material was used in PM filtration test. Results revealed that the nanofiber gained strong adsorption capacity for PM. In the experiment where smoke from the cigarette was used as the source of pollution, the filtration efficiency of nanofibers for PM 2.5 and PM 10 reached 99.85 % and 99.98 % respectively, and the low pressure drop loss was maintained. Further, the membrane material was used for field PM adsorption test in Hangzhou, and the results showed that the air filtration membrane could keep the good purifying effect in the haze environment.
作者
仲龙刚
王騊
王晟
ZHONG Longgang;WANG Tao;WANG Sheng(Key Laboratory of Advanced Textile Materials and Manufacturing Technology,Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China)
出处
《现代纺织技术》
2019年第4期1-7,共7页
Advanced Textile Technology
基金
国家自然科学基金项目(51471153)
关键词
PM
类蛛网结构
纳米纤维
空气过滤
极性
PM
spider-web-like structures
nanofiber
air filtration
polar
