Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (12): 90-96.doi: 10.13475/j.fzxb.20200804808

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Evaluation of atomization quality on fabric spray sizing

WANG Bowen1, LIN Senming1, YUE Xiaoli1, ZHONG Yi2, CHEN Huimin1()   

  1. 1. College of Mechanical Engineering, Donghua University, Shanghai 201620, China
    2. Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
  • Received:2020-08-10 Revised:2021-09-16 Online:2021-12-15 Published:2021-12-29
  • Contact: CHEN Huimin E-mail:ch_huimin@dhu.edu.cn

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Abstract:

The quality of atomization is important to determine the suitability of process parameters in fabric spray sizing. In order to quantify the atomization quality of fabric sizing, the characteristics of fabric sizing liquid were first introduced, followed by description of the image acquisition method and pretreatment process in the process of fabric sizing. Spraying angles and the similarity among the continuous images were calculated for the stability evaluation of slurry atomization field. Taking the local spray images as the calculation areas which were at the same location relative to the nozzle, droplet diameters were calculated, numbers of atomized particles were counted, and drop-size distribution were analyzed to assist the uniformity evaluation of spray sizing atomization field. Results show that the stability and the uniformity evaluations of the atomized flow field are able to quantify the atomization quality of fabric spray sizing from different scales, revealing the steady motion state of the high viscosity slurry and exploring the size and distribution of the sizing liquid droplets on fabric surfaces. It provides a basis for the micro-adjustment of fabric spraying parameters and the possibility for on-line evaluation and monitoring of fabric spraying quality.

Key words: spray sizing, atomization quality, fabric sizing liquid, stability of flow field, uniformity of flow field

CLC Number: 

  • TS101.9

Fig.1

Variation of sizing liquid viscosity with change of temperature"

Fig.2

Image acquiration of sizing liquid atomization field"

Fig.3

Full images of sizing liquid atomization field. (a)At 60th second;(b)At 70th second; (c)At 80th second;(d)At 90th second"

Fig.4

Local images of sizing liquid atomization field. (a)At 60th second;(b)At 70th second;(c)At 80th second;(d)At 90th second"

Fig.5

Pretreatment full images of sizing liquid atomization field. (a)At 60th second;(b)At 70th second;(c)At 80th second; (d)At 90th second"

Fig.6

Size calibration of experimental images"

Fig.7

Pretreatment local images of sizing liquid atomization field. (a)At 60th second;(b)At 70th second; (c)At 80th second;(d)At 90th second"

Fig.8

Contours of sizing liquid atomization field. (a)At 60th second;(b)At 70th second; (c)At 80th second;(d)At 90th second"

Fig.9

Grey curves of atomizing image atdistance of 200 mm from nozzle"

Fig.10

Droplet size distributions of sizing liquid atomization field. (a)At 60th second;(b)At 70th second;(c)At 80th second;(d)At 90th second"

Tab.1

Droplet size statistics"

图序号 相对尺寸范围Δs 发散边界Δb
图10(a) 0.866 5 1.167 9
图10(b) 0.886 5 1.167 9
图10(c) 1.180 7 1.549 5
图10(d) 0.875 0 1.258 6
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