CIESC Journal ›› 2012, Vol. 63 ›› Issue (2): 653-657.DOI: 10.3969/j.issn.0438-1157.2012.02.045

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Properties of waterborne polyurethane with phosphorusnitrogen synergy effects

LI Fen1, 2, 3, LUO Yunjun1, LI Xiaomeng1, LI Jie1   

  1.  1School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China;
    2Department of Chemistry and Chemical Engineering, Huainan Normal University, Huainan 232001, Anhui, China; 
    3School of Material Science and Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China
  • Received:2011-01-29 Revised:2011-10-09 Online:2012-02-05 Published:2012-02-05

磷-氮协效阻燃水性聚氨酯的性能

李芬1, 2, 3,罗运军1,李晓萌1,李杰1   

  1.   1北京理工大学材料科学与工程学院,北京100081;2淮南师范学院化学与化工系,安徽 淮南 232001;3安徽理工大学材料科学与工程学院,安徽 淮南 232001
  • 通讯作者: 李芬

Abstract: A flame retardant waterborne polyurethane(PU)was prepared by using N,N-bis(2-hydroxymethyl)aminoethyl phosphonic acid dimethyl ester and toluene diisocynateThe performance of the PU was studied with oxygen index (LOI), thermogravimetric analysis (TG), scanning electron microscopy (SEM)and differential scanning calorimetry (DSC).The results showed that with 15% flame retardant in the PU, the LOI of the PU reached 302%, making the polyurethane from flammable level reduced to flame retardant levelCompared with unmodified waterborne polyurethane, the thermodecomposition temperature of the PU was reduced, but the maximum decomposition rate dropped by 389% and the amount of carbon residue increased by 1075%The surface of carbon residue was compact and smooth without holes, which would be good for separating oxygen and heatPhase separation with increasing flame retardant content showed regular changesWith increasing content of flame retardant, tensile strength increased and elongation at break decreased

Key words: waterborne polyurethane, flame retardancy, phosphorus-nitrogen synergy effects

关键词: 水性聚氨酯, 阻燃, 磷氮协效