紫外线吸收剂作用简介

Introduction of the effect of ultraviolet absorbents

作用

Effect

紫外线吸收剂是一种光稳定剂，能吸收阳光及荧光光源中的紫外线部分，而本身又不发生变化。

UV absorber is a light stabilizer that absorbs ultraviolet light from sunlight and fluorescent light sources, but does not change itself.

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.

Because the sun's light contains a large amount of ultraviolet light that is harmful to colored objects, its wavelength is about 290-460 nanometers, and the harmful ultraviolet light is finally discoloured by chemical redox (Redox reaction).

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.

The way to prevent harmful ultraviolet rays from damaging colors is 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.

Here is only a brief introduction to the chemical method, that is, using ultraviolet absorbers to prevent effective protection of objects or weaken their damage to colors.

紫外线吸收剂应该具备以下条件

The UV absorbers should have the following conditions

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) strong absorption of ultraviolet (especially wavelength 290-400nm); (2) thermal stability is good, even in the process of processing will not change because of heat, heat volatility is small; (3) chemical stability, no adverse reactions to the material components in the products; 4. Good miscibility, can be evenly distributed in materials, no frost, no exudation; The absorbents themselves have good photochemical stability, do not decompose, and do not change color; (6) colorless, non-toxic, odorless; withstand the immersion washing; cheap, easy to get, 9. insoluble, or difficult to dissolve 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.

According to the chemical structure, the UV Absorbents can be divided into the following categories: salicylate, benzoin, benzo three azole, substituted acrylonitrile, three azine and hindered amines.

紫外线吸收剂常见类型编辑

Common types of ultraviolet absorbents

商品名 水杨酸苯酯

Commercial name benzyl salicylate

成 分 邻羟基苯甲酸苯酯

Benzoate phthalate

性能及用途 无色结晶粉末。具有令人愉快的芳香气味（冬青油气味）。密度1.250g/cm3，溶点43，沸点（1.6kPa）173。易溶于乙醚、苯和氯仿，溶于乙醇，几乎不溶于水和甘油。含量99%。

Performance and use of colorless crystalline powder. It has a pleasant aroma (smell of Holly oil). Density 1.250g/cm3, melting point 43, boiling point (1.6kPa) 173. Soluble in ether, benzene and chloroform, soluble in ethanol, almost insoluble in water and glycerin. The content is 99%.

该品为一种紫外线吸收剂，用于塑料制品，但吸收波长范围较窄。美国食品药物管理局批准用于接触食品的丙烯酸树脂用品。

The product is an ultraviolet absorber for plastic products, but its absorption wavelength is narrow. The US Food and Drug Administration approved acrylic resins for food contact.

包装及贮运 纸桶内衬塑料袋包装。按一般化学品规定贮运。

Packaging and storage and transportation paper barrels are lined with plastic bags. Storage and transportation according to the regulations of the general chemicals.

商品名 紫外线吸收剂UV-P

Product name UV absorber UV-P

成 分2-（2ˊ-羟基-5ˊ-甲基苯基）苯并三氮唑

Composition 2- (2 - hydroxyl -5 - methyl phenyl) benzo three azole

性能及用途 外观为无色或淡黄色结晶。能溶于汽油、苯、丙酮等多种有机溶剂。在水中溶解度极小，不被浓碱、浓酸分解。它可以和重金属离子化合成盐。能吸收270～280nm波长的紫外线。溶点130～131。

The appearance and performance are colorless or yellowish crystalline. Soluble in gasoline, benzene, acetone and other organic solvents. The solubility in water is very small, and it is not decomposed by strong alkali and concentrated acid. It can be combined with heavy metal ions to form salt. It can absorb ultraviolet light from 270 to 280nm wavelengths. The dissolve point is 130~131.

该品主要用于聚酯、含氯聚酯、醋纤、聚氯乙烯、聚苯乙烯、有机玻璃、聚丙烯腈等树脂中。在透明制品中的稳定性较在着色制品是更好。在制品中的用量为0.%～0.5%。

This product is mainly used in polyester, chlorinated polyester, acetate fiber, polyvinyl chloride, polystyrene, plexiglass, polyacrylonitrile and other resins. The stability in transparent products is better than that in coloured products. The amount of work in the product is 0% - 0.5%.

商品名 紫外线吸收剂UV-O

Product name UV absorber UV-O

成 分 2，4-二羟基二苯甲酮

Component 2, 4- two hydroxyl two Benzophenone

性能及用途 该品为淡色针状结晶或白色粉末。水分<0.5%。灰分100ml溶剂，25℃）丙酮50，苯1，乙醇>50，水<0.5，正庚烷<0.5。

Properties and uses of this product are light needle shaped crystals or white powder. The water is <0.5%. Ash 100ml solvent, 25 C) acetone 50, benzene 1, ethanol >50, water <0.5, n-heptane <0.5.

该品为紫外线吸收剂，适用于聚氯乙烯、聚苯乙烯、环氧树脂、纤维素树脂、不饱和聚酯、涂料和合成橡胶等。最大吸收波长范围280～340nm，一般用量0.1%1%。但该品的光稳定效果并不突出。

The product is UV absorber, which is suitable for polyvinyl chloride, polystyrene, epoxy resin, cellulose resin, unsaturated polyester, paint and synthetic rubber. The maximum absorption wavelength ranges from 280 to 340nm, and the general consumption is 0.1%1%. But the light stability of the product is not outstanding.

安全注意事项 该品以在白鼠的经口LD50为8.6g/kg体重，小白鼠LD502.336mg/kg体重。以0.19、0.60、1.90g/kg的剂量未见毒害作用，其他两组剂量实验动物的发育有影响，血相有变化。

Safety precautions: the weight of the product is LD50 in the white mouse, 8.6g/kg in LD502.336mg/kg, and body weight in white mice. The dosage of 0.19, 0.60 and 1.90g/kg had no toxic effect, and the other two groups had an effect on the development of experimental animals and the blood phase changed.

商品名 紫外线吸收剂UV-9

Product name UV absorber UV-9

成 分 2-羟基-4-甲氧基二苯甲酮

Component 2- hydroxyl -4- methoxy two Benzophenone

性能及用途 该品为浅黄色或白色结晶粉末。密度1.324g/cm3（2℃5）。熔点62～66℃。沸点150～160℃（0.67kPa），220℃（2.4kPa）。溶于丙酮、酮、苯、甲醇、醋酸乙酯、甲乙酮和乙醇等大多数有机溶剂，不溶于水。该品在部分溶剂中的溶解度（g/100g溶剂，25），在溶剂苯中56.2、正己烷4.3、乙醇（95%）5.8、四氯化碳34.5、苯乙烯51.2、DOP18.7。

Properties and uses of this product are light yellow or white crystalline powder. The density is 1.324g/cm3 (2 centigrade 5). The melting point is 62~66 degrees centigrade. The boiling point is 150~160 C (0.67kPa), 220 C (2.4kPa). Dissolved in acetone, ketone, benzene, methanol, ethyl acetate, methyl ethyl ketone and ethanol, most organic solvents are insoluble in water. The solubility of the product in some solvents (g/100g solvent, 25), in solvent benzene 56.2, n-hexane 4.3, ethanol (95%) 5.8, carbon tetrachloride 34.5, styrene 51.2, DOP18.7.

该品为紫外线吸收剂，适用于聚氯乙烯、聚偏二氯乙烯、聚甲基丙烯酸甲酯、不饱和聚酯、ABS树脂和纤维素树脂等多种塑料，最大吸收波长范围为28。340nm，一般用量为0.1%～1.5%，热稳定性好，在200℃时为分解。该品几乎不吸收可见光，故适用于浅色透明制品。该品还可用于油漆和合成橡胶。

The product is a UV absorber. It is suitable for polyvinyl chloride, polyvinylidene chloride, polymethyl methacrylate, unsaturated polyester, ABS resin and cellulose resin and so on. The maximum absorption wavelength range is 28. 340nm, the general dosage is 0.1% ~ 1.5%, the thermal stability is good, decomposes at 200 degrees. This product hardly absorbs visible light, so it is suitable for light colored transparent products. The product can also be used for paint and synthetic rubber.

安全注意事项 日本、意大利规定该品用于接触食品的制品时，最大用量不得超过0.3%。

Safety precautions Japan and Italy stipulate that when the product is used for food products, the maximum dosage should not exceed 0.3%.

商品名 紫外线吸收剂UV-531

Product name UV absorber UV-531

成 分 2-羟基-4-正辛氧基二苯甲酮

Component 2- hydroxyl -4- n octyl two Benzophenone

性能及用途 该品为浅黄色或白色结晶粉末。密度1.160g/cm3（25℃）。熔点48～49℃。溶于丙酮、苯，乙醇、异丙醇，微溶于二氯乙烷，不溶于水。该品在部分溶剂中的溶解度（g/100溶剂，25八），在溶剂丙酮中为74、苯72、甲醇2、乙醇（95%）2.6、正庚烷40、正己烷40.1，水0.5。

Properties and uses of this product are light yellow or white crystalline powder. The density is 1.160g/cm3 (25 degrees C). The melting point is 48~49 degrees centigrade. Soluble in acetone, benzene, ethanol, isopropanol, slightly soluble in two chloroethane, insoluble in water. The solubility of the product in some solvents (g/100 solvent, 25 eight), in solvent acetone, 74, benzene 72, methanol 2, ethanol (95%) 2.6, n-heptane 40, hexane 40.1, and water 0.5.

该品为紫外线吸收剂，能够强烈地吸收波长为270330nm的紫外线，可用于各种塑料，特别是聚乙烯、聚丙烯、聚苯乙烯、ABS树脂、聚碳酸酯、聚氯乙与树脂的相容性好，挥发性小。一般用量为0.1%～1%。与少量4，4-硫代双（6-叔丁基对甲酚）并用有良好的协同效应。该品还可用作各种涂料的光稳定剂。

The product is a UV absorber, which can absorb ultraviolet light with a wavelength of 270330nm. It can be used in various kinds of plastics, especially polyethylene, polypropylene, polystyrene, ABS resin, polycarbonate, polychloroethylene and resin, and the volatility is small. The general dosage is 0.1% ~ 1%. It has good synergistic effect with a small amount of 4 4- thiobis (6- tert butylcresol). The product can also be used as a light stabilizer for all kinds of coatings.

安全注意事项

Safety precautions