Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (09): 28-34.doi: 10.13475/j.fzxb.20180807707

• Fiber Materials • Previous Articles     Next Articles

Air filtration performance and morphological features of polyethylene glycol/polypropylene composite fibrous materials with embedded structure

ZHANG Heng1, ZHEN Qi2, LIU Yong3(), SONG Weimin4, LIU Rangtong2, ZHANG Yifeng1   

  1. 1. School of Textiles, Zhongyuan University of Technology, Zhengzhou, Henan 451191, China
    2. School of Garment, Zhongyuan University of Technology, Zhengzhou, Henan 451191, China
    3. School of Textile Science and Engineering,Tiangong University, Tianjin 300387, China
    4. Suzhou Doro New Material Technology Co., Ltd., Suzhou, Jiangsu 215600, China
  • Received:2018-08-31 Revised:2019-03-12 Online:2019-09-15 Published:2019-09-23
  • Contact: LIU Yong E-mail:liuyong@tjpu.edu.cn

Abstract:

In order to develop micro-nanofibers fibrous with efficient air filtration performance, the micro-nanofiber fibrous nonwovens were formed by one step method of high speed hot gas flow drafting based on melt blown technology with polyethylene glycol/polypropylene (PEG/PP) as the materials. The relationships between fiber arrangement, fineness distribution, porosity and filtration efficiency, filtration resistance and mass factor were analyzed experimentally. Results show that the fibers with diameter less than 800 nm are interspersed among fibers with diameter more than 4 000 nm, showing the embedded feature of the macro superposition in the direction of thickness and the micro quasi continuous branch in the horizontal direction. With the increasing of the PEG mass ratio from 0% to 8%, the fiber embedding rate of the fibers with diameter less than 800 nm increases from 0.00% to 784.66%. At the same time, the filtration efficiency increases by about 1.12 times and the mass factor shows a gradual increasing trend. It is shown that the embedded structure of the micro nanofiber material is beneficial to the capture of fine particles in the continuous fluid, which is helpful to improve capturing the fine particles in continuous fluids.

Key words: nonwoven, bionic structure, embedded structure, air filtration performance, polypropylene, polyethylene glycol, melt blown technology

CLC Number: 

  • TS167

Fig.1

Forming mechanism of embedded PP/PEG micro/nanofiber materials based on melt blowing"

Tab.1

Process parameters of PP/PEG samples"

样品编号 PEG质量分数/% 接收距离/cm
1# 0 20
2# 5 20
3# 8 20
4# 10 20
5# 12 20
6# 15 20
7# 10 10
8# 10 15
9# 10 25
10# 10 30

Fig.2

Surface and cross section SEM images of PP/PEG samples with different PEG mass ratios. (a)Surface of 2#;(b)Surface of 4#;(c)Surface of 6#;(d)Cross section of 6#"

Fig.3

Embedding rate varition of PP/PEG with PEG mass ratios"

Fig.4

SEM images of sample surfaces with different receiving distancs"

Fig.5

Porosity varation of PP/PEG with receiving distance"

Fig.6

Filtration properties of PP/PEG samples with different PEG mass fractions(a) and receiving distances(b)"

Tab.2

Specification parameters of PP/PEG"

样品编号 面密度/(g·m-2) 平均厚度/mm 孔隙率/%
1# 11.16 0.096 88.26
2# 11.42 0.107 88.29
3# 10.95 0.096 88.56
4# 10.07 0.102 88.52
5# 10.57 0.091 88.36
6# 10.40 0.102 88.88
7# 10.70 0.069 83.04
8# 10.37 0.089 86.12
9# 10.71 0.098 88.61
10# 11.08 0.102 89.11

Fig.7

Quality factor varying with PEG mass fraction(a) and receiving distance(b)"

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