In order to solve the problems of traditional waterborne polyurethane(WPU)flame retardants in unstability,poor flame retardant,and lowering mechanical properties,this study synthesized a new phos-phorus based flame retardant(FHPLC)using bisphenol fluorene(BPFL)and phenylphosphonyl chloride(BPOD).Then it was used as a chain extender to synthesize a series of intrinsic phosphorus based flame retardant waterborne polyurethane(FHWPU).The structure,heat resistance,flame retardancy,and appli-cation performance of FHPLC and FHWPU were investigated by nuclear magnetic resonance spectrosco-py,fourier transform infrared spectroscopy,X-ray diffraction,thermogravimetric analysis,UL-94 vertical combustion tester,zero cone calorimeter,adhesion tester.The results indicate that FHPLC has been suc-cessfully prepared,and a series of FHWPU films have been obtained with different contents of FHPLC.With the continuous increase of FHPLC content,the mechanical properties,heat resistance,and flame re-tardancy of FHWPU film gradually increase.FHWPU have excellent application performance.
关键词
水性聚氨酯/磷基阻燃剂/阻燃性/耐热性/苯基膦酰氯/双酚芴
Key words
waterborne polyurethane/phosphorus based flame retardant/flame retardancy/heat resist-ance/phenylphosphonyl chloride/bisphenolfluorene
万方数据