磷酸硼掺杂硅溶胶对蚕丝织物的阻燃整理

Flame retardant finishing of silk fabrics with boron phosphate doped silica sol

为获得具有良好阻燃性能的蚕丝织物,在硅溶胶中加入磷酸硼阻燃剂,采用轧—烘—焙的方法对蚕丝织物进行阻燃整理。同时采用扫描电子显微镜、能谱仪、极限氧指数、红外光谱等手段对整理前后蚕丝织物的表观形态、元素分布和阻燃性能等进行测试和表征。结果表明:将100 mL硅溶胶、50 mL去离子水、30 g/L磷酸硼、50 g/L柠檬酸、40 g/L酒石酸、45 g/L次亚磷酸钠于80℃搅拌3 h后制得掺杂改性硅溶胶,把蚕丝织物浸入制备的硅溶胶中一定时间后取出,于170℃焙烘3 min,此时得到的蚕丝织物具有最佳的阻燃性能,其极限氧指数LOI值为30.6%,且具有较好的耐水洗性。

In order to obtain silk fabric with good flame retardancy,silk fabric was finished with boron phosphate doped silica sol by pad-dry-cure process.The surface morphologies,flame retardant properties and element distribution of the silk fabric were tested and characterized by scanning electron microscopy,oxygen index,energy spectrometer and infrared spectroscopy.The results show that the silk fabric finished by immersing silk fabric in the doped modified silica sol and drying 170 ℃ for 3 min has best flame retardancy,and the doped modified silica sol was prepared from 100 mL of silica sol,50 mL of deionized water,30 g/L of boron phosphate,50 g/L citric acid,40 g/L of tartaric acid,45 g/L of sodium phosphinate by stirring at 80 ℃ for 3 h.The limit oxygen index of the silk fabric is 30.6% and has good washing durability.