| 紫外线吸收剂作用与原理 |
| 添加时间：2017/12/9 17:02:39 浏览次数： |
| 目前较为理想的紫外线吸收剂/光稳定剂多为复配型的，特别是以水杨酸酯类、苯酮类、苯并三唑类、取代丙烯腈类、三嗪类与受阻胺类复配，可取得比任何单独紫外线吸收剂更为理性的效果。紫外线吸收剂的使用领域：聚合物（塑料等）,涂料（汽车喷漆，建筑物涂饰）,印刷油墨，染色/印花纺织品的后处理，防晒化妆品。 At present the ideal ultraviolet absorbent / light stabilizer for compound, especially with salicylic acid esters, ketones, benzene and benzene, three triazole substituted acrylonitrile, three triazine and hindered amine compound, can be achieved than any individual UV absorber more rational effect. The application field of UV absorber is polymer (plastic, etc.), paint (automotive spray paint, building coating), printing ink, dyed / printed textile post-processing, sunscreen cosmetics. 由于太阳光线中含有大量对有色物体有害的紫外光，其波长约290-460纳米，这些有害的紫外光通过化学上的氧化还原作用（Redox reaction），使颜色分子最后分解褪色.紫外线吸收剂防止有害的紫外光对于颜色的破坏的方法既有物理的，也有化学的. Because the sun contains lots of harmful ultraviolet light colored objects, its wavelength is about 290-460 nm, these harmful ultraviolet light by chemical reduction oxidation (Redox reaction), make the color fade. Finally molecular ultraviolet absorbent decomposition method to prevent harmful ultraviolet light color for destruction of both the physical and chemical.. 这里只简单介绍以化学的方法，即使用紫外线吸收剂对受保护的物体实施有效的防止，或削弱其对颜色的破坏. This is only a brief introduction to the chemical method, that is, the use of UV absorbers to effectively prevent or weaken the damage to the color of the protected object. 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. It can strongly absorb ultraviolet light (especially wavelength 290-400nm); second, good thermal stability, but also will not change due to heat even in the machining process, the heat of low volatility and good chemical stability; and the products of material components of adverse reaction; the good miscibility, can evenly dispersed in the material. Do not spray, cream, no exudation; the absorbent itself good photochemical stability, does not decompose, do not change color; the colorless, non-toxic, odorless and resistant; immersion; the cheap and 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. UV absorbers can be divided into the following categories according to their chemical structure: salicylate, benzophenone, benzo three azole, substituted acrylonitrile, three azine and hindered amines. |
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