| 紫外线吸收剂 |
| 添加时间：2017/12/1 16:25:00 浏览次数： |
| 摘要:紫外线吸收剂是光稳定剂的一种，目前市场上有很多品种在销售。按结构分大致可分为以下几类：水杨酸酯类、苯酮类、苯并三唑类、取代丙烯腈类、三嗪类和其他类。 Abstract: ultraviolet absorbent is a kind of light stabilizer. At present, there are many varieties in the market. According to the structure, it can be divided into the following categories: salicylate, benzoin, benzo three azole, substituted acrylonitrile, three azine and other classes. 一.前言： First. Preface: 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， 而使用紫外线吸收剂对受保护的物体可以实施有效的防止,或削弱其对颜色的破坏。 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), the molecular decomposition and finally color fading, using UV absorber on the protected objects can effectively prevent, or weaken the destruction of color. 二．介绍： Two. Introduction: 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。塑料和其他高分子材料在日光和荧光下，因紫外线的作用，产生自动氧化反应，导致聚合物的降解而劣化，使外观及机械性能变坏。加入紫外线吸收剂后可选择性地吸收这种高能量的紫外线，使之变成无害的能量而释放或消耗。由于聚合物的种类不同，使其劣化的紫外线波长也不相同，不同的紫外线吸收剂可吸收不同波长的紫外线，使用时，应根据聚合物的种类选择紫外线吸收剂。 The ultraviolet absorber is a light stabilizer that absorbs the ultraviolet part of the sunlight and the fluorescent light source, and does not change itself. Plastics and other polymer materials produce automatic oxidation reaction under UV and sunlight, resulting in degradation and deterioration of polymers, resulting in deterioration of appearance and mechanical properties. After adding ultraviolet absorbents, this high energy ultraviolet ray can be selectively absorbed to make it become harmless energy and release or consume. Due to the different kinds of polymers, the UV wavelengths of their degradation are also different. Different ultraviolet absorbers can absorb different wavelengths of ultraviolet. When applied, UV absorbers should be selected according to the type of polymer. 紫外线吸收剂应该具备以下条件：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。 The ultraviolet absorbent should meet the following conditions: 1 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 occurred adverse reaction; the good miscibility. Can be uniformly dispersed in the material, no blooming, 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; we do not dissolve, or difficult to dissolve in water. 紫外线吸收剂用于塑料、涂料、染料、汽车挡风玻璃、化妆品、药物、防晒剂等。 UV absorbers are used in plastics, coatings, dyes, car windshield, cosmetics, drugs, sunscreen and so on. 三．分类： Three. Classification: 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、三嗪类和其他类。以下是几种常见的紫外线吸收剂简介。 UV absorbers can be divided into the following categories according to their chemical structure: salicylate, benzophenone, benzo three azole, substituted acrylonitrile, three azine and other classes. The following are several common introduction of ultraviolet absorbents. 商品名 水杨酯苯酯 Salicylate benzyl ester 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 (odour of Holly oil). The density of 1.250g/cm3 43, melting point, boiling point (1.6kPa) 173. Soluble in ether, benzene and chloroform, soluble in ethanol, almost insoluble in water and glycerin. The content is 99%. 本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。 This product is a kind of ultraviolet absorbent, used in plastic products, but the absorption wavelength range is narrow. The food and Drug Administration of the United States approved acrylic resin supplies for contact with food. 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 drum 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-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 本品为淡色针状结晶或白色粉末。水分＜0.5%。灰分＜0.5%。熔点136～149℃。溶于丙酮、甲醇、乙醇、甲乙酮、二恶烷、N-甲基吡啶酮和醋酸乙酯，极难溶于水，正庚烷和苯。本品在部分溶剂中的溶解度（g/100ml溶剂，25℃）丙酮50，苯1，乙醇＞50，水＜0.5，正庚烷＜0.5。 The performance and use of this product is light colored needle crystalline or white powder. The water is less than 0.5%. The ash is less than 0.5%. The melting point is 136~149 degrees centigrade. Soluble in acetone, methanol, ethanol, methyl ethyl ketone, two oxane, N- methylpyridone and ethyl acetate, which are extremely difficult to dissolve in water, n-heptane and benzene. The solubility of this product in some solvents (g/100ml solvent, 25 C) acetone 50, benzene 1, ethanol > 50, water < 0.5, n-heptane < 0.5. 本品为紫外线吸收剂，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%。但本品的光稳定效果并不突出。 This product is a UV absorber. It is suitable for polyvinyl chloride, polystyrene, epoxy resin, cellulose resin, unsaturated polyester, coating and synthetic rubber. The maximum absorption wavelength range is 280 ~ 340nm, and the average amount is 0.1%1%. But the light stabilization effect of this product is not outstanding. 安全注意事项 本品以在白鼠的经口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。 The safety precautions were given to the 8.6g/kg body weight of LD50 at the mouth of the rat and the LD502.336mg/kg weight of the mice. The dose of 0.19, 0.60 and 1.90g/kg had no toxic effect, and the other two groups of experimental animals had an influence on the development of the 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 本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。本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。 The performance and use of this product is 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). It dissolves in most organic solvents, such as acetone, ketone, benzene, methanol, ethyl acetate, methyl ethyl ketone and ethanol, which are insoluble in water. The solubility of the product in some solvents (g/100g solvent, 25) is 56.2 in solvent benzene, 4.3 in hexane, 95% in ethanol, 5.8 in carbon tetrachloride, 51.2 in styrene, and DOP18.7 in solvent. 本品为紫外线吸收剂，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。本品几乎不吸收可见光，故适用于浅色透明制品。本品还可用于油漆和合成橡胶。 This product is an ultraviolet absorber. It is suitable for polyvinyl chloride, polyvinylidene chloride, polymethyl methacrylate, unsaturated polyester, ABS resin and cellulose resin, and the maximum absorption wavelength is 28. 340nm, the general dosage is 0.1% ~ 1.5%, the thermal stability is good, and it is decomposed at 200. This product almost does not absorb visible light, so it is suitable for light color transparent products. This product can also be used in paint and synthetic rubber. 安全注意事项 日本、意大利规定本品用于接触食品的制品时，最大用量不得超过0.3%。 Safety precautions: when Japan and Italy stipulate that this product is used to contact food products, the maximum amount 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 本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。本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% The performance and use of this product is 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 and isopropanol, slightly soluble in two chloroethane, insoluble in water. The solubility of this product in some solvents (g/100 solvent, 25 eight), in solvent acetone, 74, benzene 72, methanol 2, and ethanol (95%) |
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