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荧光增白剂泛黄如何处理?


网址:http://www.scvc8.com  时间:2019-02-15 15:56:23

荧光增白剂泛黄如何处理?
How to deal with the yellowing of fluorescent whitening agent?
一、在消费进程中应采取一系列相应措施,如在煮漂进程中,酸洗后的水洗一定要充沛;皂洗要尽量增加皂质的残留;加白时应运用软水及控制 pH值偏碱性( pH 8-9);选用的荧光增白剂应选耐酸性较好的产品。
First, in the process of consumption, a series of corresponding measures should be taken, for example, in the process of boiling and bleaching, the water washing after pickling must be abundant; soaping should maximize the residue of soap; whitening should use soft water and control the pH value of alkaline (pH 8-9); fluorescent whitening agent should choose products with better acid resistance.
二、传统工艺流程是: 练漂 → 热水洗 → 过酸 →脱氧 → 水洗。在排液热水洗后过冰醋酸。冰醋酸是挥发性酸,浸透才能差,只能中和纤维外表的烧碱,难以浸透到纤维外部。尤其是厚重织物,往往在纤维外部残留烧碱。因而改用中和酸,中和酸不只可以中和纤维外表的烧碱,也能中和纤维外部的烧碱,可以到达完全中和的效果。同时过酸的工夫和温度也要严厉控制,以便中和彻底,因而将过酸工夫适当延伸。这对厚重织物的漂白尤其重要。
2. The traditional technological process is scouring and bleaching hot water washing peracid deoxidation water washing. Glacial acetic acid is used after hot water washing. Glacial acetic acid is a volatile acid, which can only neutralize the caustic soda on the surface of the fibers and is difficult to penetrate into the outside of the fibers. Especially for heavy fabrics, caustic soda is often left outside the fibers. Therefore, the use of neutralizing acid can not only neutralize the caustic soda on the outside of the fibers, but also neutralize the caustic soda on the outside of the fibers, so that the effect of complete neutralization can be achieved. At the same time, the time and temperature of overacid should be strictly controlled so as to neutralize thoroughly, so that overacid time can be properly extended. This is especially important for the bleaching of heavy fabrics.
荧光增白剂厂家
三、柔软剂的选择。阳离子柔软剂、弱阳离子柔软剂及普通硅油手感柔软,都会惹起白色织物不同水平的黄变。因而要对柔软剂加以选择和确认。
3. Selection of softeners. Cationic softener, weak cationic softener and ordinary silicone oil can cause yellowing of white fabrics at different levels. Therefore, softeners should be selected and confirmed.
四、加工织物应防止与酸或氯等气体接触。
4. Fabrics should be processed to prevent contact with gases such as acid or chlorine.
五、控制水质,尽量应运用软水。水质硬度高,增白效果会下降。水中如含酸、游离氯及铜、铁等重金属离子会明显影响增白效果。
5. To control water quality, soft water should be used as far as possible. Water quality has high hardness, whitening effect will decrease. Heavy metal ions such as acid, free chlorine, copper and iron in water can obviously affect the whitening effect.
综上所述有山东吉凌化工178彩票注册提供,更多荧光增白剂厂家知识,欢迎关注我们的网站:http://www.scvc8.com谢谢支持!
In summary, all the above-mentioned Shandong Jiling Chemical Co., Ltd. provides more knowledge of fluorescent brightener manufacturers. Welcome to our website: http://www.scvc8.com. Thank you for your support!

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