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Evaluation and characterization of ammoniumpolyphosphate-pentaerythritol-based systems for intumescent coatings

Andersson, Anna LU ; Lundmark, Stefan and Maurer, Frans LU (2007) In Journal of Applied Polymer Science 104(2). p.748-753
Abstract
Intumescent coatings are increasingly used as a method of passive fire protection on steel constructions. By forming a carbon network and releasing a blowing agent, the thin intumescent film swells 100-fold at elevated temperatures. The highly insulating foam effectively prevents the load bearing steel from reaching its critical temperature at which it looses its mechanical properties and collapses. The role of the carbon donor in intumescent coatings has been studied. Comparison in temperature development, foaming ratios, and rheological behavior has been performed between formulations containing pentaerythritol (penta), di-penta, and tri-penta. A simulated fire test, in which the temperature development during intumescence was studied,... (More)
Intumescent coatings are increasingly used as a method of passive fire protection on steel constructions. By forming a carbon network and releasing a blowing agent, the thin intumescent film swells 100-fold at elevated temperatures. The highly insulating foam effectively prevents the load bearing steel from reaching its critical temperature at which it looses its mechanical properties and collapses. The role of the carbon donor in intumescent coatings has been studied. Comparison in temperature development, foaming ratios, and rheological behavior has been performed between formulations containing pentaerythritol (penta), di-penta, and tri-penta. A simulated fire test, in which the temperature development during intumescence was studied, showed that the formulations containing penta were considerably more efficient in keeping a low temperature throughout the process. A more rapid temperature development was displayed when using di-penta and tripenta as the carbon donor. Rheometer tests indicate that penta formulations enter the inturnescent process at a lower temperature and stays in it for a longer time than di-penta and tri-penta formulations. Furthermore, the crossover temperature and maximum phase angle are shifted towards higher temperatures by replacing penta with di-penta and with tri-penta in the formulations, respectively. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
foam extrusion, intumescence, flame retardancy, rheology
in
Journal of Applied Polymer Science
volume
104
issue
2
pages
748 - 753
publisher
John Wiley & Sons
external identifiers
  • wos:000244587000008
  • scopus:33947672474
ISSN
1097-4628
DOI
10.1002/app.25588
language
English
LU publication?
yes
id
d1c1483c-9dd1-4d29-9c3f-a502bc0d288f (old id 541234)
alternative location
http://www3.interscience.wiley.com/cgi-bin/abstract/114096825/ABSTRACT?CRETRY=1&SRETRY=0
date added to LUP
2007-10-31 11:23:35
date last changed
2017-03-05 03:37:33
@article{d1c1483c-9dd1-4d29-9c3f-a502bc0d288f,
  abstract     = {Intumescent coatings are increasingly used as a method of passive fire protection on steel constructions. By forming a carbon network and releasing a blowing agent, the thin intumescent film swells 100-fold at elevated temperatures. The highly insulating foam effectively prevents the load bearing steel from reaching its critical temperature at which it looses its mechanical properties and collapses. The role of the carbon donor in intumescent coatings has been studied. Comparison in temperature development, foaming ratios, and rheological behavior has been performed between formulations containing pentaerythritol (penta), di-penta, and tri-penta. A simulated fire test, in which the temperature development during intumescence was studied, showed that the formulations containing penta were considerably more efficient in keeping a low temperature throughout the process. A more rapid temperature development was displayed when using di-penta and tripenta as the carbon donor. Rheometer tests indicate that penta formulations enter the inturnescent process at a lower temperature and stays in it for a longer time than di-penta and tri-penta formulations. Furthermore, the crossover temperature and maximum phase angle are shifted towards higher temperatures by replacing penta with di-penta and with tri-penta in the formulations, respectively.},
  author       = {Andersson, Anna and Lundmark, Stefan and Maurer, Frans},
  issn         = {1097-4628},
  keyword      = {foam extrusion,intumescence,flame retardancy,rheology},
  language     = {eng},
  number       = {2},
  pages        = {748--753},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Applied Polymer Science},
  title        = {Evaluation and characterization of ammoniumpolyphosphate-pentaerythritol-based systems for intumescent coatings},
  url          = {http://dx.doi.org/10.1002/app.25588},
  volume       = {104},
  year         = {2007},
}