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荧光增白剂BBU的使用留意事项


网址:http://www.jilinghuagong.com  时间:2019-01-29 18:45:46

荧光增白剂BBU的使用留意事项
Notes on the Use of Fluorescent Whitening Agent BBU
增白效果常用白度表示,它除了与荧光增白剂的添加量有关外,还与树脂的相容性及塑料的耐光性有关。相容性好,耐光性好的荧光增白剂其增白效果好且耐久。检验荧光增白剂增白效果的比较间接无效的办法是停止小样实验。
The whitening effect is usually expressed by whiteness, which is related not only to the amount of fluorescent whitening agent added, but also to the compatibility of resin and the light resistance of plastics. Fluorescent whitening agent with good compatibility and light resistance has good whitening effect and durability. The most indirect and ineffective way to test the whitening effect of fluorescent whitening agent is to stop the small sample experiment.
荧光增白剂BBU的用量常用其绝对于塑料质量的百分数表示。荧光增白剂在塑料中的用量与其化学构造、分散度以及塑料配方中的增塑剂或其他添加剂的性质有关。适宜的用量应经过小样实验来确定,以满足使用要求爲准绳,并不是在什麼状况下荧光增白剂的用量越多增白效果越好,而是有一定的浓度极限,超越某一极限值,不但没有增白效果,甚至还会呈现发黄景象。过高的荧光增白剂用量还会惹起不相溶,发作迁移景象,抗老化功能降高等。
The amount of fluorescent brightener BBU is usually expressed by its absolute percentage of plastic quality. The dosage of fluorescent whitening agent in plastics is related to its chemical structure, dispersion and the properties of plasticizer or other additives in plastics formulation. Suitable dosage should be determined by a small sample experiment to meet the use requirements as the criterion. It is not that the more the dosage of fluorescent whitening agent, the better the whitening effect, but that there is a certain concentration limit, beyond a certain limit, not only no whitening effect, but also a yellowing scene. Excessive dosage of fluorescent whitening agent can also cause incompatibility, migration and aging resistance.
荧光增白剂厂家
采用两种或两种以上不同的荧光增白剂复配,如选择适宜,会使荧光光谱变宽,其荧光强度加强,到达增效的目的,同时改善其使用功能。由于荧光增白剂的作用是将紫外光转化爲可见蓝光或紫光,因此对荧光增白剂自身影响比较大的就是那些能吸收紫外光的成分,即白色颜料和紫外光波动剂。白色颜料中的钛白粉由于能吸收紫外光中的380nm光波,若存在于塑料制品中就会降低荧光增白剂的增白效果。
If two or more different fluorescent whitening agents are used, the fluorescence spectrum will be broadened, the fluorescence intensity will be strengthened, the purpose of synergism will be achieved, and the use function of fluorescent whitening agents will be improved at the same time. Because the function of fluorescent brighteners is to convert ultraviolet light into visible blue light or purple light, the components that can absorb ultraviolet light, namely white pigments and ultraviolet fluctuants, have the greatest influence on the fluorescent brighteners themselves. Titanium dioxide in white pigments can absorb 380 nm ultraviolet light. If it exists in plastic products, it will reduce the whitening effect of fluorescent whitening agent.
综上所述有山东吉凌化工有限公司提供,更多荧光增白剂厂家知识,欢迎关注我们的网站:http://www.jilinghuagong.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.jilinghuagong.com. Thank you for your support!

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