Preparation and Applications of High-Phosphorous-Containing Flame Retardant for Flame-Retardant Polyurethane

doi:10.19491/j.issn.1001-9278.2019.09.015

Abstract

Abstract: A type of high-phosphorous-containing flame retardant (PCDB) was synthesized, and its chemical structure was characterized with FTIR and 1H-NMR spectroscopy. The flame-retardant performance of the polyurethane foam flame-retarded with PCDB was evaluated by limiting oxygen index and cone calorimetry, and its thermal behavior was investigated by thermogravimetric analysis. Moreover, the morphology of the residual char obtained from flame retardant test was observed by SEM. The results indicated that PCDB could effectively reduce the limited oxygen index, peak heat release rate and average effective combustion heat of the flame-retardant polyurethane foam. PCDB was found to improve the carbonization ability of polyurethane foam and impart the carbon residue with a more compact microstructure.

Key words: rigid polyurethane foam, flame retardant, phosphorus

CLC Number:

TQ328.3

ZHAO Han, WEI Simiao, MA Wen, YANG Musen, BAI Yichen, XU Bo. Preparation and Applications of High-Phosphorous-Containing Flame Retardant for Flame-Retardant Polyurethane[J]. China Plastics, 2019, 33(9): 83-88.

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