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Rheological investigations in fire retardancy: application to ethylene–vinyl‐acetate copolymer–magnesium hydroxide/zinc borate formulations
Author(s) -
Carpentier Fabien,
Bourbigot Serge,
Le Bras Michel,
Delobel René
Publication year - 2000
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/1097-0126(200010)49:10<1216::aid-pi515>3.0.co;2-s
Subject(s) - zinc borate , fire retardant , zinc , boron , materials science , cone calorimeter , ethylene vinyl acetate , magnesium , copolymer , blowing agent , magnesium acetate , zinc hydroxide , chemical engineering , hydroxide , vinyl acetate , polymer chemistry , organic chemistry , composite material , chemistry , polymer , metallurgy , char , engineering , pyrolysis , polyurethane
Abstract In this work, zinc borate is used as synergistic agent in EVA–Mg(OH) 2 flame‐retardant (FR) formulations. High zinc borate content leads to a significant improvement of flame retardancy during cone calorimeter experiments. Blowing measurements reveal significant modification of the structure due to the presence of zinc borate. To estimate the resistance of this structure under strength, blowing measurements were carried out under two different pressures. Viscosity measurements helped to elucidate the foaming process. Finally, zinc borate can be understood to be a binder (flux agent). © 2000 Society of Chemical Industry