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On the intumescence of ethylene-acrylate copolymers blended

Krämer, Roland; Blomqvist, Per LU ; Van Hees, Patrick LU and Gedde, Ulf (2007) In Polymer Degradation and Stability 92(10). p.1899-1910
Abstract
The combustion and melt dripping of poly(ethylene-co-butyl acrylate) (EBA), EBA blended with polypropylene (EBAePP) and poly (ethylene-co-methacrylic acid) (EMAA), each blended with calcium carbonate and polydimethylsiloxane, were studied. In situ measurement of the temperature gradient in the cone calorimeter were combined with infrared spectroscopy measurements on specimens withdrawn and quenched at different times of the experiment. The reactions that govern the degradation at the high heating rates met in the combustion could be determined and the gap to analytical techniques such as thermogravimetry bridged. The interplay of mechanical char integrity and heat feedback by the flame determined how much time the specimen dwells in... (More)
The combustion and melt dripping of poly(ethylene-co-butyl acrylate) (EBA), EBA blended with polypropylene (EBAePP) and poly (ethylene-co-methacrylic acid) (EMAA), each blended with calcium carbonate and polydimethylsiloxane, were studied. In situ measurement of the temperature gradient in the cone calorimeter were combined with infrared spectroscopy measurements on specimens withdrawn and quenched at different times of the experiment. The reactions that govern the degradation at the high heating rates met in the combustion could be determined and the gap to analytical techniques such as thermogravimetry bridged. The interplay of mechanical char integrity and heat feedback by the flame determined how much time the specimen dwells in temperature range of 300 to 420 C where char expansion due to calcium salt formation is effective and thereby affects the heat release rate strongly. Vertical cone calorimeter and vertical flame testing were used to assess melt dripping and char stability under flaming combustion. Plateeplate rheological measurements proofed to be of limited use to compare the effect of different degradation atmospheres on the melt viscosity. The EMAA formulation had the most effective intumescent process with a low heat release rate and good char stability even in vertical configuration. Electron-beam irradiated EMAA specimens with different levels of

cross-links were tested in the cone calorimeter in order to understand the role of cross-links for the intumescent process. (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Chalk, Intumescence, Polyolefin, Acrylic, Flame retardant, Halogen-free
in
Polymer Degradation and Stability
volume
92
issue
10
pages
1899 - 1910
publisher
Elsevier
external identifiers
  • Scopus:34948885154
ISSN
1873-2321
DOI
10.1016/j.polymdegradstab.2007.06.014
language
English
LU publication?
no
id
c792b9b5-628d-4d06-8217-8a3a82360805 (old id 834197)
date added to LUP
2008-01-07 12:28:03
date last changed
2016-10-13 04:37:13
@misc{c792b9b5-628d-4d06-8217-8a3a82360805,
  abstract     = {The combustion and melt dripping of poly(ethylene-co-butyl acrylate) (EBA), EBA blended with polypropylene (EBAePP) and poly (ethylene-co-methacrylic acid) (EMAA), each blended with calcium carbonate and polydimethylsiloxane, were studied. In situ measurement of the temperature gradient in the cone calorimeter were combined with infrared spectroscopy measurements on specimens withdrawn and quenched at different times of the experiment. The reactions that govern the degradation at the high heating rates met in the combustion could be determined and the gap to analytical techniques such as thermogravimetry bridged. The interplay of mechanical char integrity and heat feedback by the flame determined how much time the specimen dwells in temperature range of 300 to 420 C where char expansion due to calcium salt formation is effective and thereby affects the heat release rate strongly. Vertical cone calorimeter and vertical flame testing were used to assess melt dripping and char stability under flaming combustion. Plateeplate rheological measurements proofed to be of limited use to compare the effect of different degradation atmospheres on the melt viscosity. The EMAA formulation had the most effective intumescent process with a low heat release rate and good char stability even in vertical configuration. Electron-beam irradiated EMAA specimens with different levels of<br/><br>
cross-links were tested in the cone calorimeter in order to understand the role of cross-links for the intumescent process.},
  author       = {Krämer, Roland and Blomqvist, Per and Van Hees, Patrick and Gedde, Ulf},
  issn         = {1873-2321},
  keyword      = {Chalk,Intumescence,Polyolefin,Acrylic,Flame retardant,Halogen-free},
  language     = {eng},
  number       = {10},
  pages        = {1899--1910},
  publisher    = {ARRAY(0x9695448)},
  series       = {Polymer Degradation and Stability},
  title        = {On the intumescence of ethylene-acrylate copolymers blended},
  url          = {http://dx.doi.org/10.1016/j.polymdegradstab.2007.06.014},
  volume       = {92},
  year         = {2007},
}