Shanghai Daoqin Plastics Co., Ltd.

紫 outer absorption agent can absorption day light and light light 源 紫 external separation 而不改变自身, in plastics and other polymer/macromolecule material in cationic light and light lower, due to outer function, generate oxidation reaction, polymer/macromolecule degradation, appearance and force property can 变差, add outer absorption agent rear, it can selection property absorption this type of high can outer 线, make its formed is can amount 而释放 or consumption. due to polymer types type different, poor 化 紫 outer long different. different types type outer absorption agent can absorption different long outer 线, in use 时, according to polymer types type selection outer absorption agent, outer absorption agent chemical structure can separation is below/following type: water acid salt, 二苯甲 ketone, 苯并三唑, acrylonitrile, and other type 别. lower Shanghai chemical industry is large detailed introduction lower.

1, water acid salt outer absorption agent outer absorption rate ratio 二苯甲 ketone small, absorption belt/tape more narrow, and it for outer light absorption unstable, it can absorption can light, make material 质呈现黄 color, and polymer versus property good, therefore, used for light 缆, polyester, PVC, PE, poly ethylene, polystyrene (PS) and other high poly material.

2, 二苯甲 ketone outer absorption agent in 二苯甲 ketone is 邻羟基二苯甲 ketone material, this category of outer absorption agent and large more polymer tool has good versus property, good light stabilization property and heat stabilized property, in 200°C时不发生 separation understanding, rise property strong/high, therefore widely used in polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), ABS, polystyrene (PS), polyamide (PA) and other polymer and textile material.

3, 苯并三唑基紫 outer absorption agent property can excellent 于二苯甲 ketone outer absorption agent, it can absorption 310～385Pm紫 outer light and 几乎不 absorption can light, property can very stability, price relatively 贵. main/primary used for polyvinyl chloride (PVC), polystyrene (PS), saturated and polyester, polycarbonate (PC), polymethyl methacrylate (PMMA), polyethylene (PE) and other product, it resistant 皂洗, is it solvent understanding in alkali property in, make fiber 变黄.

4, acrylonitrile can absorption 310～320-m outer 线, resistant alkali property good, easy solvent 于甲苯, ketone, acid ester and other, micro solvent alcohol, alcohol, solvent water, absorption rate relatively low. therefore, suitable for poly oxygen ethylene, shrink aldehyde resin, polyolefin, ring oxygen resin, polyamide (PA), acrylic resin, polyurethane ester, aldehyde resin, fiber 素, especially suitable for PVC products.

5, type outer absorption agent for 280～380rm紫 outer light tool has relatively high absorption can force. and 苯并三唑 type stabilizer versus ratio, it is types high light absorption stabilizer, it is types 含邻羟基 2-羟基苯基三嗪衍生 material, this category of combined material outer absorption and 邻羟基 数目 has 关, 邻羟基数目越 more, absorption outer can force strong/high. different 取代基 引入 reduce ring resin alkali degree, improve/increase day degree and and resin versus property, therefore can used for high temperature color, and 印花.