Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes

Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes

The coating of the fluorescent-lamp material inside the fluorescent tube is prone to defect such as dark line formation. A one-dimensional mathematical model based on Navier-Stokes equation, which describes the flow of drying coating on horizontal planar substrates, was developed to investigate the...

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Main Authors: Abdullah, Bawadi, Vo, Dai-Viet N., Chowdhury, Sujan
Format: Article
Published: Trans Tech Publications, Switzerland 2014
Subjects:
TP Chemical technology
Online Access:http://umpir.ump.edu.my/id/eprint/7700/
http://umpir.ump.edu.my/id/eprint/7700/
http://umpir.ump.edu.my/id/eprint/7700/
id ump-7700
recordtype eprints
spelling ump-77002018-05-14T07:34:05Z http://umpir.ump.edu.my/id/eprint/7700/ Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes Abdullah, Bawadi Vo, Dai-Viet N. Chowdhury, Sujan TP Chemical technology The coating of the fluorescent-lamp material inside the fluorescent tube is prone to defect such as dark line formation. A one-dimensional mathematical model based on Navier-Stokes equation, which describes the flow of drying coating on horizontal planar substrates, was developed to investigate the defect formation. The effect of temperature distribution on surface tension gradient was incorporated into the model, to quantify defect formation in drying coating. The results showed that, temperature-induced surface tension gradient plays a major role in defect formation while the effect of pressure gradient is insignificant. The evaporation rate and viscosity affect the defect thickness and spread, and also the defect formation time. The temperature gradient seems to have the largest influence on surface tension gradient, thus defect formation. The model developed can be used as a process analysis tool in industrial applications of fluorescent tube coating. Trans Tech Publications, Switzerland 2014 Article PeerReviewed Abdullah, Bawadi and Vo, Dai-Viet N. and Chowdhury, Sujan (2014) Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes. Advanced Materials Research, 917. pp. 181-188. ISSN 1022-6680 (print), 1662-8985 (online) http://dx.doi.org/10.4028/www.scientific.net/AMR.917.181 DOI: 10.4028/www.scientific.net/AMR.917.181
repository_type Digital Repository
institution_category Local University
institution Universiti Malaysia Pahang
building UMP Institutional Repository
collection Online Access
topic TP Chemical technology
spellingShingle TP Chemical technology
Abdullah, Bawadi
Vo, Dai-Viet N.
Chowdhury, Sujan
Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes
description The coating of the fluorescent-lamp material inside the fluorescent tube is prone to defect such as dark line formation. A one-dimensional mathematical model based on Navier-Stokes equation, which describes the flow of drying coating on horizontal planar substrates, was developed to investigate the defect formation. The effect of temperature distribution on surface tension gradient was incorporated into the model, to quantify defect formation in drying coating. The results showed that, temperature-induced surface tension gradient plays a major role in defect formation while the effect of pressure gradient is insignificant. The evaporation rate and viscosity affect the defect thickness and spread, and also the defect formation time. The temperature gradient seems to have the largest influence on surface tension gradient, thus defect formation. The model developed can be used as a process analysis tool in industrial applications of fluorescent tube coating.
format Article
author Abdullah, Bawadi
Vo, Dai-Viet N.
Chowdhury, Sujan
author_facet Abdullah, Bawadi
Vo, Dai-Viet N.
Chowdhury, Sujan
author_sort Abdullah, Bawadi
title Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes
title_short Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes
title_full Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes
title_fullStr Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes
title_full_unstemmed Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes
title_sort modeling the effect of temperature-induced surface tension gradient in coating processes
publisher Trans Tech Publications, Switzerland
publishDate 2014
url http://umpir.ump.edu.my/id/eprint/7700/
http://umpir.ump.edu.my/id/eprint/7700/
http://umpir.ump.edu.my/id/eprint/7700/
first_indexed 2023-09-18T22:04:34Z
last_indexed 2023-09-18T22:04:34Z
_version_ 1777414622398119936

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