Fluorescent brightener in detergent in the performance of
作者：admin时间：2020-07-22 05:58:51252 次浏览
信息摘要：
If there is a significant impact. Generally the higher the white puree, fluorescent brighteners increase the whiteness of the resulting higher, mainly due to high time when the white puree, pulp lignin content of such little competition in
If there is a significant impact. Generally the higher the white puree, fluorescent brighteners increase the whiteness of the resulting higher, mainly due to high time when the white puree, pulp lignin content of such little competition in the absorption and fluorescent brightener factors that will greatly reduce the UV, so UV light is used to stimulate the fluorescent whitening agent on the increased, thus changing the amount of fat blue fluorescence will increase. In order to achieve good whitening effect, the use of brighteners must be decontaminated before and pulp bleaching process, high purity and high brightness (75%) of the pulp to get the maximum whitening effect. The general whiteness of the pulp in 65% of f as the amount of lignin-containing mechanical pulp and more unbleached pulp) paper should not be used brightener additives and fillers cationic papermaking additives of various types of added fluorescent whitening whitening effect has a greater impact. Some of the better retention of cationic retention aid, especially high positive charge density of cationic additives (such as PEI and PAE), can lead to the whitening effect of fluorescent brighteners significantly lower. Fillers for papermaking system to add the impact of different fluorescent whitening agent. TiO, can absorb ultraviolet light, will reduce the fluorescent whitening effect: most of the clay can be offset from the fluorescence effect, reducing whitening effect; CaCO and AI (OH) can reflect ultraviolet light, can enhance the effect of 3.4 fluorescent whitening Fluorescent brightener brighteners should be kept stored in the dark to avoid sunlight and high temperatures. Withstand exposure to sunlight or high temperatures, fluorescent brighteners from the molecular structure of trans-structure of low-energy state into a high energy state structure of cis-cis-molecule fluorescent brighteners structure can not be absorbed by the ultraviolet light into visible light Blu-ray. To several commonly used fluorescent brighteners into the detergent, respectively, with the whiteness by powder experiments, experiments and recycling washing decontamination experiments examined the fluorescent brighteners in detergent performance. The results show that: Fluorescent brightener in the detergent added in the mass fraction of 01%, the different species of fluorescent brightener powder can improve the whiteness of 349% ~ 3464%. Fluorescent brightener CBS-X, 3 1 #, VBL, CXT's back to the yellow dot on the powder were 030%, 025%, 015% and 015%. Compared with the blank, add detergent to 01 wt% of the fluorescent whitening agent, can make the detergency ratio increased to 107 ~ 125.
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