采用紫外光辐射引发接枝的技术,将自制的含磷阻燃单体甲基丙烯酰氧乙基.二乙基磷酸酯(DE.MEP)对真丝进行阻燃改性。通过研究不同工艺参数(溶剂种类、单体浓度、引发剂种类、引发剂浓度、光照距离、光照时间、照射方式以及有无石英玻璃)对接枝率的影响,测试接枝织物的白度和极限氧指数,结果表明,随着接枝率的增大,真丝白度下降,极限氧指数明显提高,阻燃效果显著。15%~20%的DMMEP添加量可使极限氧指数达26.6%~29.2%;阻燃整理后,真丝燃烧后炭渣致密平整,主要是由于磷阻燃剂促进真丝脱水成炭所致。
Self-made flame-retardant monomer diethyl methacryloyloxyethyl phosphate (DEMEP) is applied onto silk fabric by UV irradiation grafting technology. Factors exerting influence on weight gain of silk fabric are discussed, such as solvent type, photo initiator and its concentrations, irradiation distance, irradiation time, irradiation way, and the presence of quartz glass. It is revealed that with the increase of weight gain, limiting oxygen index (LOI) and flame retardancy of silk improve accordingly while the whiteness reduces a little. The LO! of treated silk fabric can attain 26.6% - 29.2% with the addition of DMMEP 15% -20%.