Synthesis and application of phosphate fire retardant liquid on cotton

Interior decoration materials are mostly made of flammable materials,such as cotton,wood and so on,which can likely cause fire,casualties and property losses. Therefore,the study on the combustion performance of interior decoration materials is very necessary. Phosphate flame retardant,an additive flame retardant,can improve the flame retardant efficiency of the cotton,wood,and so on by spraying or dipping. Phosphate fire retardant liquid is synthesized with diammonium phosphate and ammonium dihydrogen phosphate as the reagents. Nine mass ratios of diammonium phosphate and ammonium dihydrogen phosphate are 9∶1,8∶2,7∶3,6∶4,5∶5,4∶6,3∶7,2∶8,1∶9,respectively. These phosphate flame retardant liquids are applied on cotton,and then these samples are characterized by a microcomputer differential thermal balance and CONE. The results indicate that the cotton treated by the ratio of 2∶8 has the longest ignition time and the best flame retardant effect. The current investigation is helpful to improve the flame retardant property of the phosphate fire retardant liquid and explore the effects of its performance factors.