推荐回答(2个)
通过酶基团作用于残存溶液中水解染料结构上的发色功能团)以及加速溶液晶中水解染料的氧化分解反应、使皂洗残液脱色、而在纤维内部未固着的水解染料的高温氧化分解反应,使皂洗残液脱色,而在纤维内部未固着的水解染料需要借助漆酶内含有的特殊高分子聚合物协同效应,经过纤维细微结构孔道萃取,纤移,溶解或分散在洗液中,经过漆酶组分中一种特殊的酵素系统作用于染料结构上的发色基团使其消色,达到去除残液中未固着水解染料的高温目的
皂洗的目的活性染料色谱齐全,色泽鲜艳,成本低,染色工艺成熟,因此,80%以上的纤维素纤维染色和印花均采用活性染料。活性染料种类繁多,化学结构多样,其反应效率也各有差异,但是它们都不能与纤维素纤维完全反应,此外,在上染固着纤维的同时,染料还会发生水解,即活性染料中的活性基被羟基所取代而形成水解染料。
这些未固着的染料和水解染料,其扩散和吸附性能与原来的活性染料非常相似,因此容易吸附在纤维表面,并扩散进入纤维。在碱剂和温度压力的情况下,这些未固着的染料和水解染料(浮色)又部分于纤维结合,容易导致渗色和再沾污,湿摩擦牢度,干摩擦牢度,水洗牢度牢度,防沾色性能均不理想。皂洗的主要目的就是去除浮色,提高产品的质量。
皂洗工艺原理
增溶:增加残余在织物上的助剂及未结合的燃料的溶解性。
螯合:与高价金属离子起螯合作用,软化洗涤用水。
分散:对固体污垢有抗凝聚作用和分散作用。
净洗:将残余在织物上的助剂及未结合的燃料洗下来。
乳化及防玷污作用:将净洗下来的助剂、燃料均匀地乳化在溶液中,形成胶束,防止再玷污到织物上。
起碱性缓冲作用:代替一般净洗中使用纯碱等碱性物质。
活性防沾印花皂洗剂Goon506是黄色透明粘稠液体,易溶于水。适用于棉纤维及其混纺织物的皂洗防沾之用。本品属于阴离子,具有优异的螯合和吸附染料的性能,同时具有很好的分散效果,在染色中使用可提高染料在染浴中的稳定性。本品不含APEO等禁用物质,符合环保要求。Goon506的特性如下:
1.具有较强分散力和防返沾能力,可以减少后处理步骤和时间
2.可以改善活性染料染物和印花物的皂洗牢度,保证色泽鲜艳度
3.对聚酯/棉皂洗时可减少聚酯沾污,对于活性染料印花可大大减少花色间的互窜,防止白底沾色
4.能去除印花织物在水洗过程中色浆与硬水作用产生的海藻酸钙沉淀物
5.生物降解性好
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