Authors: Liping Gao Guangyao Zheng Yonghong Zhou Lihong Hu Guodong Feng
Publish Date: 2015/02/17
Volume: 120, Issue: 2, Pages: 1311-1325
Abstract
Liquefied ligninbased polyol LBP was successfully obtained by liquefying calcium lignosulphonate with a polyhydroxy alcohol mixture which can substitute 30 petroleumbased polyether polyol to prepare rigid polyurethane foam RPUF In an effort to reduce the flammability and smoke release from RPUF liquefied LBP in combination with commercial flame retardant polyol FRP polyurethane microencapsulated ammonium polyphosphate MAPP and organically modified layered double hydroxide OLDH were used to fabricate halogenfree flame retardant RPUF nanocomposite The influences of incorporating LBP FRP MAPP and OLDH into RPUF on the thermal conductivity mechanical property thermal performance flame retardancy and fire behaviors of RPUFs were comprehensively investigated It is noteworthy that simultaneously incorporating LBP FRP MAPP and OLDH into RPUF can significantly improve the mechanical property thermal performance flame retardancy and fire behavior of RPUF The improved flame retardancy and fire behavior of RPUF are attributable to combined effects among LBP FRP MAPP and OLDH in gas phase and condensed phase
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