【作者】 赵黎； 闫红强； 方征平；

【Author】 ZHAO Li;YAN Hongqiang;FANG Zhengping;MOE Key Laboratory of Macromolecular Synthesis and Functionalization,Department of Polymer Science and Engineering,Zhejiang University;Lab of Polymer Materials and Engineering,Ningbo Institute of Technology,Zhejiang University;

【机构】 高分子合成与功能构造教育部重点实验室,浙江大学高分子科学与工程学系； 浙江大学宁波理工学院高分子材料与工程研究所；

【摘要】 <正>苎麻纤维作为重要的纺织纤维,具有良好的吸湿性、透气性、防腐防菌防霉等其他天然纤维无法比拟的独特特点^[1]。同时,得益于其优良的力学性能,结合当下对于绿色可再生资源的需求,苎麻纤维也被广泛应用于纺织以外的航空航天、汽车、电子以及建筑等领域。然而,苎麻纤维等天然纤维共有的易燃缺点也在一定程度上制约了其应用拓展。本文针对苎麻织物特有的化学组成结构以及燃烧特点,利用聚乙烯亚胺（PEI）的正电荷性和聚磷酸铵（APP）更多还原

【Abstract】 Multilayer flame-retardant coatings consisting of opposite-charged polyelectrolyte polyethyleneimine(PEI) and ammonium polyphosphate(APP) have been constructed onto the surface of soft and porous ramie fabrics by spray-assisted layer-by-layer(LBL) technique.In comparison to the tranditional LBL dipping assembly method,the new spraying seems more convenient and less time-consuming.It is found that the char residues of the coated fabrics at high temperature during thermogravimetric analysis were significantly enhanced as compared with the untreated sample.Furthermore,the microscale combustion calorimeter revealed a deduction of both peak heat release rate(PHRR) and total heat release(THR),which largely depended on the number of deposited layers.Accordingly,it could be concluded that the spraying PEI/APP coatings imparts to the ramie fabrics flame retardancy.更多还原