丙稀酸乳液在水性色浆中起什么作用

2025年04月08日 02:10
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涂料印花增稠剂
  增稠剂是涂料印花胶料的重要组分,可使色浆增厚,促进粘合并具有乳化作用,能提高涂料印花织物的着色量和鲜艳度,从而使织物获得轮廓清晰的花纹。涂料印花增稠剂中常使用的丙烯酸酯聚合物,在低固含量下具有很高的粘度,其稳定性好,增稠力强,不易发霉,广泛用于静电植绒粘合剂,涂料印花粘合剂和水性涂料增稠剂等。
  涂层用丙烯酸酯乳液
  涂层整理是纺织品整理的一个分枝,通过涂布的方法使织物具有特种性能,固含量为40%的丙烯酸酯涂层剂抗水压和透气性好,已广泛用于涤棉风衣,涤棉、尼龙骨雪衫面料等的涂层整理,添加阻燃剂后具有阻燃效果。由丙烯酸乙酯、丁酯、N-羟甲基丙烯酰胺等聚合制得的乳胶加入其它助剂后可制成泡沫涂层剂,用于遮布窗帘,坐垫面料。将丙烯酸丁酯90份,丙烯酸5份,丙烯酸2-甲氧基乙酯10份,水160份在搅拌下加入十二烷基硫醇0.15份,乳化剂3份,2%K2S2O8水溶液5份于79℃,氮气保护下聚合3h制成聚合物乳液。使用时按织物涂层剂50、水30、增稠剂4、消泡剂适量的配比混匀并用适量的氨水将涂层剂调至pH为9-10即可。
  纺织经纱上浆
  浆料丙烯酸酯浆料是以丙烯酸,甲基丙烯酸及其酯类为主体的均聚物或共聚物及其部分皂化成的少量的丙烯酸及(甲基)内烯酸盐等构成的。自交联丙烯酸酯乳液形成的浆膜耐磨性好,强度大,韧性好,耐水,对尼龙、涤纶的粘附力强。聚丙烯酸酯类浆料是合成纤维,长丝上浆的主要浆料,最先使用的是丙烯酸与丙烯酸及盐类的共聚物,现已加入硬单体如甲基丙烯酸甲酯进行改性以提高共聚物的玻璃化温度,其甲酯浆料的制法是将丙烯酸甲酸、乙酯和丙烯酸按配比进行乳液聚合,其中过氧化苯甲酰为引发剂,用量为1%,在非离子表面活性剂(1%)存在下于80℃反应,产物用氨水中和,其丙烯酸的含量应控制在12%左右,成品固含量为14%。

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