采用静电层层自组装(LBL)技术在棉织物表面构筑了氢氧化镁/六偏磷酸钠(MH/PSP)阻燃层。利用扫描电子显微镜和傅里叶变换红外光谱仪对自组装阻燃棉织物形貌、结构进行了表征;采用热重分析仪、锥形量热仪、垂直燃烧仪对棉织物的阻燃性能、残炭性能进行了分析和测试。结果表明:采用LBL技术制备的阻燃织物,氢氧化镁均匀包覆在织物纤维表面,自组装4层的阻燃织物极限氧指数达到32.5%,峰值热释放速率和总热释放量分别为74.11kW/m2和0.52MJ/m2,与纯棉织物相比分别降低77%和92.4%,达到了良好的自熄效果。
Flame retardant layer of magnesium hydroxide (MH) and sodium polyphosphates (PSP) were constructed on the surface of cotton by using layer by layer (LBL) self-assembly technic,besides the flame retardant cotton fiber was further modified by silica.In particular,the structure and morphology of flame retardant materials and fabric were researched by the SEM and XRD.TG,CONE and VFT were further tested to analyse the anti-flame property、char residue and hydrophobic performance.The results showed that the MH was coated evenly on the surface of cotton,after 4 BL coated,the LOI reached to 32.5%,the PHRR and THR was 74.11kW/m2 and 0.52MJ/m2 with a decrement of 77% and 92.4% separately,possessed excellent self-extinguish property.
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基金资助
江苏省研究生科研与实践创新计划项目(SJCX18-0625);江苏高校优势学科建设工程资助项目(苏政办发﹝2014﹞37号);国家重点研发计划资助项目(2017YFB0309100);国家自然科学基金(51641303);中央高校基本科研业务费专项资金资助项目(JUSRP51621A)
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