Organo-inorganic hybrid intumescent fire retardant coatings for thermoplastics based on poly(vinylphosphonic acid)

Kandola, Baljinder K. ORCID: 0000-0002-3621-3724, Williams, K.V. and Ebdon, John R. ORCID: 0000-0003-4176-3912 (2020) Organo-inorganic hybrid intumescent fire retardant coatings for thermoplastics based on poly(vinylphosphonic acid). Molecules, 25 (3). e688. ISSN 1420-3049

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Official URL: https://www.mdpi.com/journal/molecules

Abstract

Thin coatings of crosslinked poly(vinylphosphonic acid), PVPA, display good adhesion and excellent intumescent, fire-retardant barrier properties when applied to the surfaces of a typical thermoplastic, such as poly(methyl methacrylate), but perform relatively poorly in water-soak tests. To strengthen and further improve the barrier properties of the intumescent char and to make the coating more hydrophobic, PVPA has been complexed with various inorganic and organic species. The chars formed from coatings of some of these hybrid materials are less friable than chars from coatings synthesized from crosslinked PVPA alone, and show higher levels of water tolerance with no significant reduction in dry adhesion to the substrate.

Item Type: Article
Additional Information: This paper belongs to the special issue "Innovative Flame Retardants"
Uncontrolled Keywords: poly(vinylphosphonic acid); surface coatings; magnesium oxide; calcium silicate; chitosan; fire retardant
Divisions: University of Bolton Research Centres > Institute for Materials Research and Innovation
Depositing User: Tracey Gill
Date Deposited: 07 Feb 2020 14:00
Last Modified: 13 Feb 2020 14:27
Identification Number: 10.3390/molecules25030688
Funders: This research was funded by Lanxess (formerly the Chemtura Corporation).
URI: http://ubir.bolton.ac.uk/id/eprint/2698

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