Application of Expandable Graphite and Phosphoruscontaining Flame Retardants in Rigid Polyurethane Foams

doi:10.19491/j.issn.1001-9278.2013.10.016

China Plastics ›› 2013, Vol. 27 ›› Issue (10): 73-77 .DOI: 10.19491/j.issn.1001-9278.2013.10.016

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Application of Expandable Graphite and Phosphoruscontaining Flame Retardants in Rigid Polyurethane Foams

FENG Fafei

Received:2013-04-22 Revised:1900-01-01 Online:2013-10-26 Published:2013-10-26

Abstract

Abstract: The effect of expandable graphite (EG), polyphosphate polyol oligomer (OP550), and diethylN,Nbis(2hydroxyethyl) aminomethylphosphonate WSFR6 on the flame retardancy of rigid polyurethane foam(RPUF) was investigated by means of limited oxygen index and cone calorimeter tests. RPUF exhibited a better charring ability and gave compact residual char layer after ignition in the presence of both OP550 and WSFR6. When the loading of EG in RPUF was 14 %, the limited oxygen index of RPUF system increased to 33.6 %, and the peak value of heat release rate decreased to 106.93 kW/m2.

Key words: application, rigid polyurethane foam, expandable graphite, phosphoruscontaining flame retardant, flame retardancy

FENG Fafei . Application of Expandable Graphite and Phosphoruscontaining Flame Retardants in Rigid Polyurethane Foams[J]. China Plastics, 2013, 27(10): 73-77 .

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Application of Expandable Graphite and Phosphoruscontaining Flame Retardants in Rigid Polyurethane Foams

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