Preparation and Properties of Halogen-Free Flame Retardant Polyurethane Foams

Ding Meng Chen; Yi Ping Zhao; Jia Jian Yan; Li Chen; Zhi Zhi Dong; Wei Gui Fu

doi:10.4028/www.scientific.net/AMR.418-420.540

Paper Titles

Continuous Cooling Transformation Behavior of Vercooling Austenite of Low Carbon-Manganese Steel
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Study on Foam Properties of Alkylbenzene Sulfonate Gemini Surfactants
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Research on the Confidence Interval of Indirect Detection
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Effects of the Particle Size Variety of Metal Oxide on the Absorption Property of Long-Wavelength Infrared Laser
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Preparation and Properties of Halogen-Free Flame Retardant Polyurethane Foams
p.540

Study on Dehydration Process of Wet Natural Rubber by Single Screw Dehydrator and Properties of Dry Natural Rubber
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The Assembly Success Rate and the Estimation of Assembly Time for a Flexible Assembly System
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Photocatalytic Activity of Bi₂O₃ Prepared by Different pH Value
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Study on Influence of Modified SiC Nano-Powders on the Microstructures and Work-Hardening Properties of ZGMn13
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 418-420Preparation and Properties of Halogen-Free Flame...

Preparation and Properties of Halogen-Free Flame Retardant Polyurethane Foams

Abstract:

Polyurethane foams (PUFs) filled with several halogen-free flame retardants and composite halogen-free flame retardants were prepared. The flame retardant, thermal stable and mechanical properties of the PUFs were investigated. The results of limiting oxygen index (LOI) and thermogravimetric analysis (TGA) revealed that PUFs filled with dimethyl methylphosphonate (DMMP) had better flame retardancy compared with other flame retardants and DMMP degraded at a low temperature to form several phosphorated acids which accelerated the formation of char layer. Composite flame retardant of DMMP and melamine (MA) had a synergistic effect between phosphorus and nitrogen. The combination of DMMP and MA slightly altered the density of the PUFs. Results from the mechanical analysis revealed that with the increase in concentration of MA in the composite flame retardant of DMMP and MA, the tensile strength of PUFs reduced firstly and then increased up to a constant.