Improving the flame retardance of polyisocyanurate foams by dibenzo[d,f][1,3,2]dioxaphosphepine 6-oxide-containing additives

Loading...
Thumbnail Image
Date
2019
Volume
11
Issue
8
Journal
Polymers
Series Titel
Book Title
Publisher
Basel : MDPI
Link to publishers version
Abstract

A series of new flame retardants (FR) based on dibenzo[d,f][1,3,2]dioxaphosphepine 6-oxide (BPPO) incorporating acrylates and benzoquinone were developed previously. In this study, we examine the fire behavior of the new flame retardants in polyisocyanurate (PIR) foams. The foam characteristics, thermal decomposition, and fire behavior are investigated. The fire properties of the foams containing BPPO-based derivatives were found to depend on the chemical structure of the substituents. We also compare our results to state-of-the-art non-halogenated FR such as triphenylphosphate and chemically similar phosphinate, i.e. 9,10-dihydro-9-oxa-10- phosphaphenanthrene-10-oxide (DOPO), based derivatives to discuss the role of the phosphorus oxidation state.

Description
Keywords
Collections
License
CC BY 4.0 Unported