荧光增白剂在洗衣粉中的效能研究

Study of effects of fluorescent whitening agents in washing powder

将几种常用的荧光增白剂分别配入洗衣粉中 ,通过粉体白度实验、去污实验和循环洗涤实验 ,考察了荧光增白剂在洗衣粉中的效能。实验结果表明 :荧光增白剂在洗衣粉中的添加质量分数为 0 1%时 ,不同品种的荧光增白剂可使粉体白度提高 3 49%～ 3 4 64 %。荧光增白剂CBS -X、 3 1# 、VBL、CXT对粉体的返黄点分别为 0 3 0 %、 0 2 5 %、 0 15 %和 0 15 %。与空白样相比 ,洗衣粉中加入质量分数为 0 1%的荧光增白剂时 ,可使去污力比值提高至 1 0 7～ 1 2 5。荧光增白剂在洗衣粉中的最佳添加量其质量分数分别是 :CBS -X为 0 0 5 %～ 0 10 % ,3 1# 为 0 10 %～ 0 15 % ,VBL和CXT为 0 10 %。

Several fluorescent whitening agents are respectively added into washing powder and the effects of fluorescent whitening agents in washing powder are studied through tests on whiteness for powder,detergency and cycle of washing.The results are as follows:with weight percentage being 0 1 %,different type of fluorescent whitening agents can raise the whiteness for washing powder by 3 49 %～34 64 % The respective yellowing point of CBS-X,31 #,VBL and CXT in washing powder is 0 30 %,0 25 %,0 15 % and 0 15 % Compared with blank sample,the washing powders with fluorescent whitening agent of 0 1 % can raise detergency power to 1 07～1 25 The optimum weight percentage of fluorescent whitening agent in washing powder is:0 05 %～0 1 % for CBS-X,0 1 %～0 15 % for 31 #,0 1 % for VBL and CXT respectively.