Intumescent Phosphorus and Triazole-Based Flame-Retardant Polyurethane Foams from Castor Oil.

ABSTRACT: Synthesis of a novel phosphorus and triazole-functionalized flame-retardant (FR) monomer (PTFM) using azide-alkyne "click" reaction between triprop-2-ynyl phosphate and 2-azidoethanol that can impart intumescent FR property to polyurethane foams (PUFs) has been reported. Polyurethane triazole foams (PUTFs) were prepared using the as-synthesized PTFM and a hydroxylated castor polyol with a hydroxyl value of ∼310 mg KOH/g for application as reactive FR rigid foams. PTFM and the castor polyol were characterized for structural elucidation using Fourier transform infrared and ¹H, ¹³C, and ³¹P NMR. PUTFs with a varying loading content of PTFM were subjected to the lab-scale flame test, cone calorimetry test, Underwriters Laboratory 94 Vertical burning test (UL 94

SUBMITTER: Sykam K 

PROVIDER: S-EPMC6647972 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature