| 紫外线吸收剂应该具备以下条件 |
| 添加时间：2019/8/20 14:22:50 浏览次数： |
| 紫外线吸收剂应该具备以下条件 Ultraviolet absorbents should meet the following requirements ①可强烈地吸收紫外线（尤其是波长为290-400nm）；②热稳定性好，即使在加工中也不会因热而变化，热挥发性小；③化学稳定性好，不与制品中材料组分发生不利反应；④混溶性好，可均匀地分散在材料中，不喷霜，不渗出；⑤吸收剂本身的光化学稳定性好，不分解，不变色；⑥无色、无毒、无臭；⑦耐浸洗；⑧价廉、易得，；9.不溶，或难溶于水. (1) It can absorb ultraviolet radiation strongly (especially wavelength 290-400 nm); (2) it has good thermal stability, which will not change with heat even in processing, and has low thermal volatility; (3) it has good chemical stability and does not react adversely with material components in products; (4) it has good miscibility and can be evenly dispersed in materials without frost spraying and seepage; Absorbent itself has good photochemical stability, no decomposition, no color change; _colorless, non-toxic, odorless; _leaching resistance; _cheap, easy to get; 9. insoluble, or insoluble in water. 紫外线吸收剂按化学结构可分为以下几类：水杨酸酯类、苯酮类、苯并三唑类、取代丙烯腈类、三嗪类和受阻胺类. Ultraviolet absorbents can be divided into the following categories according to their chemical structure: salicylates, benzoketones, benzotriazoles, substituted acrylonitriles, triazines and hindered amines. |
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