阻燃-拒水涂层剂NPSi-FR的制备与应用

Synthesis and application of flame retardant and water repellent coating agent NPSi-FR

以羟基磷酸酯、二元异氰酸酯、三元醇和环氧基硅烷为原料,通过选择性反应制备了含有—NCO活性基的阻燃-拒水涂层剂NPS i-FR,并与交联剂PEG一起用于涤棉织物的阻燃整理。优化的整理工艺为:NPS i-FR 210 g/L,PEG-400 120 g/L,海藻酸钠60 g/L,焙烘温度140℃。织物整理后的极限氧指数为27.6%,接触角为115°,耐水洗性能较好,但白度和拉伸性能略有下降。

NPSi-FR,a flame retardant and water repellent coating agent with —NCO reactive group,is prepared using hydroxyl phosphate,diisocyanate,triol,and epoxy silane as raw materials by selective reaction.Flame retardant finish of PET/cotton blends is carried out with NPSi-FR and crosslinker PEG.The optimum finish process is NPSi-FR 210 g/L,PEG-400 120 g/L,sodium alginate 60 g/L,curing at 140 ℃.The treated fabric features excellent flame retardant property with LOI 27.6%,water contact angle 115°,and little strength loss and whiteness loss.