{"id":9513,"date":"2026-01-29T04:32:05","date_gmt":"2026-01-29T04:32:05","guid":{"rendered":"https:\/\/changhongchemical.com\/?p=9513"},"modified":"2026-04-27T11:16:12","modified_gmt":"2026-04-27T11:16:12","slug":"how-to-choose-a-uv-absorber","status":"publish","type":"post","link":"https:\/\/changhongchemical.com\/tr\/how-to-choose-a-uv-absorber\/","title":{"rendered":"UV Absorber Nas\u0131l Se\u00e7ilir?"},"content":{"rendered":"

UV Absorber Nas\u0131l Se\u00e7ilir?<\/strong><\/h1>\n

Hi\u00e7 uzun s\u00fcre pencere kenar\u0131nda b\u0131rak\u0131lan plastik sandalyelerin k\u0131r\u0131lganla\u015f\u0131p \u00e7atlad\u0131\u011f\u0131n\u0131 veya d\u0131\u015f mekan korkuluklar\u0131n\u0131n kaplamas\u0131n\u0131n benekli ve soluk hale geldi\u011fini fark ettiniz mi? Bunun nedeni ultraviyole (UV) \u0131\u015f\u0131\u011f\u0131n malzemeleri sessizce \"ayr\u0131\u015ft\u0131rmas\u0131d\u0131r\". UV emiciler<\/a> polimer malzemeler i\u00e7in \u00f6zel olarak tasarlanm\u0131\u015f \"g\u00f6r\u00fcnmez g\u00fcne\u015f kremi\" gibidir. G\u00fcne\u015f \u0131\u015f\u0131\u011f\u0131ndan gelen zararl\u0131 UV \u0131\u015f\u0131nlar\u0131n\u0131 emer ve onlar\u0131 zarars\u0131z \u0131s\u0131ya d\u00f6n\u00fc\u015ft\u00fcr\u00fcr, b\u00f6ylece plastikleri, kaplamalar\u0131, kau\u00e7u\u011fu ve di\u011fer malzemeleri \"g\u00fcne\u015f yan\u0131\u011f\u0131ndan\" ve ya\u015flanmadan korurlar.<\/p>\n

Do\u011fru \"g\u00fcne\u015f kremi\" se\u00e7imi \u00e7ok \u00f6nemlidir. Birka\u00e7 temel ko\u015fulu kar\u015f\u0131lamas\u0131 gerekir: 290-400nm aral\u0131\u011f\u0131nda zararl\u0131 UV \u0131\u015f\u0131nlar\u0131n\u0131n g\u00fc\u00e7l\u00fc emilimi, y\u00fcksek s\u0131cakl\u0131kta i\u015flemeye diren\u00e7, malzeme ile iyi uyumluluk ve kararl\u0131, g\u00fcvenli olmal\u0131 ve d\u0131\u015far\u0131 s\u0131zmamal\u0131d\u0131r. Farkl\u0131 malzemeler farkl\u0131 \"g\u00fcne\u015f kremi\" korumas\u0131 gerektirir. A\u015fa\u011f\u0131da, birka\u00e7 ana ak\u0131m UV emici t\u00fcr\u00fcn\u00fc inceleyece\u011fiz ve her birinin neyi korumak i\u00e7in en uygun oldu\u011funu g\u00f6rece\u011fiz.<\/p>\n

\"UV<\/p>\n

Kategori 1: Benzofenon bazl\u0131 bile\u015fikler (en yayg\u0131n kullan\u0131lan, geni\u015f uygulama yelpazesi)<\/strong><\/h3>\n

Bu tip UV emici en yayg\u0131n kullan\u0131lan\u0131d\u0131r. Temel \u00f6zellikleri iyi uyumluluk ve m\u00fckemmel \u0131s\u0131 direncidir. \u00c7o\u011fu a\u00e7\u0131k renkli veya \u015feffaf \u00fcr\u00fcnlerde kullan\u0131labilir, bu da onlar\u0131 plastik ve kaplama end\u00fcstrilerinde \"standart g\u00fcne\u015f kremi\" haline getirir.<\/p>\n

2,4-Dihidroksibenzofenon<\/strong><\/h3>\n

A\u00e7\u0131k renkli i\u011fne \u015fekilli kristaller veya beyaz toz olarak g\u00f6r\u00fcn\u00fcr, suda neredeyse \u00e7\u00f6z\u00fcnmez, ancak aseton ve etanol gibi organik \u00e7\u00f6z\u00fcc\u00fclerde kolayca \u00e7\u00f6z\u00fcn\u00fcr. 280-340 nm dalga boyundaki ultraviyole \u0131\u015f\u0131\u011f\u0131 absorbe edebilir, geni\u015f bir uygulama alan\u0131na sahiptir ve polivinil klor\u00fcr, polistiren, epoksi re\u00e7ine, kaplamalar ve sentetik kau\u00e7uk gibi \u00e7e\u015fitli malzemelerde kullan\u0131labilir. Geleneksel ekleme miktar\u0131 0.1%-1%'dir. Bir dezavantaj\u0131, \u0131\u015f\u0131k stabilizasyon etkisinin ola\u011fan\u00fcst\u00fc olmamas\u0131 ve genellikle di\u011fer katk\u0131 maddeleri ile birlikte kullan\u0131lmas\u0131 gerekti\u011fidir.<\/p>\n

- 2-Hidroksi-4-metoksibenzofenon (UV-9)<\/strong><\/h3>\n

A\u00e7\u0131k sar\u0131 veya beyaz kristal toz, kokusuz, iyi \u0131s\u0131 direncine sahip (200 \u00b0 C'de ayr\u0131\u015fmaz) ve g\u00f6r\u00fcn\u00fcr \u0131\u015f\u0131\u011f\u0131 neredeyse hi\u00e7 emmez, bu da onu \u00f6zellikle a\u00e7\u0131k renkli ve \u015feffaf plastik \u00fcr\u00fcnler i\u00e7in uygun hale getirir. \u00c7o\u011fu organik \u00e7\u00f6z\u00fcc\u00fcde kolayca \u00e7\u00f6z\u00fcn\u00fcr, suda \u00e7\u00f6z\u00fcnmez ve 280-340 nm ultraviyole \u0131\u015f\u0131\u011f\u0131 absorbe edebilir. Polivinil klor\u00fcr, polimetil metakrilat (pleksiglas), ABS re\u00e7inesi, sel\u00fcloz re\u00e7inesi vb. i\u00e7in 0.1%-1.5% ilave miktar\u0131 ile uygundur. Boyalarda ve sentetik kau\u00e7ukta da kullan\u0131labilir. Y\u00fcksek g\u00fcvenli\u011fe sahiptir ve baz\u0131 \u00fclkelerde, g\u0131da ile temas eden \u00fcr\u00fcnlerde kullan\u0131ld\u0131\u011f\u0131nda maksimum ekleme miktar\u0131 0.3% ile s\u0131n\u0131rland\u0131r\u0131lm\u0131\u015ft\u0131r.<\/p>\n

- 2-Hidroksi-4-n-oktiloksibenzofenon (UV-531)<\/strong><\/h3>\n

D\u00fc\u015f\u00fck yo\u011funluklu ve d\u00fc\u015f\u00fck u\u00e7uculu\u011fa sahip a\u00e7\u0131k sar\u0131 veya beyaz kristal toz. \u00c7e\u015fitli plastiklerle m\u00fckemmel uyumlulu\u011fa sahiptir ve 270-330 nm ultraviyole \u0131\u015f\u0131\u011f\u0131 g\u00fc\u00e7l\u00fc bir \u015fekilde emer. Esas olarak 0.1%-1% ilave miktar\u0131 ile polietilen, polipropilen, polistiren, ABS re\u00e7ine, polikarbonat vb. i\u00e7in uygundur. Antioksidanlarla birlikte kullan\u0131ld\u0131\u011f\u0131nda, g\u00fcne\u015ften koruma etkisi \u00f6nemli \u00f6l\u00e7\u00fcde artar. \u00c7ok d\u00fc\u015f\u00fck toksisiteye sahiptir ve bir\u00e7ok \u00fclke, farkl\u0131 malzemeler i\u00e7in belirli kullan\u0131m limitleri (0.2%-1%) ile g\u0131da ile temas eden plastik \u00fcr\u00fcnlerde (polietilen ve polipropilen kaplar gibi) kullan\u0131m\u0131na izin vermektedir.<\/p>\n

Kategori 3: Salisilat Esterleri (Y\u00fcksek Maliyet Etkililik, D\u00fc\u015f\u00fck U\u00e7lu Plastikler i\u00e7in Uygun)<\/strong><\/h3>\n

Bu UV emiciler ucuzdur ve kolayca temin edilebilir, ancak dar bir emilim dalga boyu aral\u0131\u011f\u0131na sahiptirler ve orta d\u00fczeyde g\u00fcne\u015f korumas\u0131 sa\u011flarlar. Genellikle y\u00fcksek hava ko\u015fullar\u0131na dayan\u0131kl\u0131l\u0131k gerektirmeyen plastik \u00fcr\u00fcnlerde kullan\u0131l\u0131rlar ve bu da onlar\u0131 \"ekonomik bir g\u00fcne\u015f koruma se\u00e7ene\u011fi\" haline getirir.<\/p>\n

1. Fenil Salisilat<\/strong><\/h3>\n

Eter ve benzen gibi organik \u00e7\u00f6z\u00fcc\u00fclerde kolayca \u00e7\u00f6z\u00fcnen, su ve gliserolde neredeyse \u00e7\u00f6z\u00fcnmeyen, hafif keklik \u00fcz\u00fcm\u00fc ya\u011f\u0131 kokulu renksiz kristal toz. Dar bir absorpsiyon dalga boyu aral\u0131\u011f\u0131na sahiptir ve y\u00fcksek maliyet etkinli\u011fi nedeniyle \u00e7o\u011funlukla plastik \u00fcr\u00fcnlerde kullan\u0131l\u0131r. ABD G\u0131da ve \u0130la\u00e7 Dairesi (FDA) taraf\u0131ndan g\u0131da ile temas eden akrilik re\u00e7ine \u00fcr\u00fcnlerinde (akrilik sofra tak\u0131mlar\u0131 gibi) kullan\u0131m i\u00e7in onaylanm\u0131\u015ft\u0131r.<\/p>\n

2. Resorsinol Monobenzoat<\/strong><\/h3>\n

A white crystalline powder, slightly soluble in water and benzene, and easily soluble in acetone and ethanol. Its sun protection performance is similar to that of benzofenon<\/a> derivatives. Mainly used in polyvinyl chloride, cellulose resins, and polystyrene, with a typical addition amount of 1%-2%. Suitable for low-end products where cost is a concern and high weather resistance is not required.\u3002<\/p>\n

Kategori 4: Di\u011fer \u00d6zel Tipler (Belirli Senaryolara Uyarlanm\u0131\u015f)<\/strong><\/h3>\n

Bu kategori UV emiciler<\/a> \u00f6zel emilim bantlar\u0131na veya farkl\u0131 etki mekanizmalar\u0131na sahiptir ve esas olarak belirli malzemeler veya \u00f6zel gereksinimleri olan senaryolar i\u00e7in kullan\u0131l\u0131r, bu da onlar\u0131 son derece hedefli hale getirir.<\/p>\n

1. o-Nitroanilin ve p-Kresol\u00fcn Reaksiyon \u00dcr\u00fcn\u00fc<\/strong><\/h3>\n

Renksiz veya a\u00e7\u0131k sar\u0131 kristaller, suda \u00e7\u00f6z\u00fcnmez, benzin, benzen ve aseton gibi organik \u00e7\u00f6z\u00fcc\u00fclerde kolayca \u00e7\u00f6z\u00fcn\u00fcr ve konsantre asitler veya bazlar taraf\u0131ndan kolayca ayr\u0131\u015ft\u0131r\u0131lmaz. UV \u0131\u015f\u0131\u011f\u0131n\u0131 270-280 nm'de (nispeten benzersiz bir dalga boyu) emer. Esas olarak polyester, klorlu polyester, sel\u00fcloz asetat, polivinil klor\u00fcr ve poliakrilonitril gibi re\u00e7inelerde kullan\u0131l\u0131r. \u015eeffaf \u00fcr\u00fcnlerdeki stabilitesi, 0.1%-0.5% ilave miktar\u0131 ile renkli \u00fcr\u00fcnlerden daha iyidir.<\/p>\n

2. 2,2\u2032-Thiobis(4-tert-octylphenoxy)nickel (Nikel Kompleksi)<\/strong><\/h3>\n

Ye\u015fil toz, \u00f6ncelikle polietilen ve polipropilen gibi poliolefin malzemeler i\u00e7in uygundur. Plastik filmlerin ve liflerin UV hasar\u0131ndan korunmas\u0131nda \u00f6zellikle etkilidir ve malzemenin i\u015fleme performans\u0131n\u0131 da art\u0131rabilir. Di\u011fer UV emicilerle birlikte kullan\u0131ld\u0131\u011f\u0131nda, g\u00fcne\u015ften koruma etkisi \u00f6nemli \u00f6l\u00e7\u00fcde artar. Bununla birlikte, dezavantajlar\u0131 aras\u0131nda \u00fcr\u00fcn\u00fc renklendirebilen koyu rengi ve y\u00fcksek s\u0131cakl\u0131klarda \u00fcr\u00fcn\u00fc grimsi siyaha d\u00f6n\u00fc\u015ft\u00fcrme olas\u0131l\u0131\u011f\u0131 yer al\u0131r. Ayr\u0131ca toksiktir ve kullan\u0131m s\u0131ras\u0131nda ekstra dikkat gerektirir.<\/p>\n

3. Tris(1,2,2,6,6-pentametilpiperidinil) fosfit (Engellenmi\u015f Amin)<\/strong><\/h3>\n

Beyaz kristal toz, organik \u00e7\u00f6z\u00fcc\u00fclerde kolayca \u00e7\u00f6z\u00fcn\u00fcr, suda az \u00e7\u00f6z\u00fcn\u00fcr ve poliolefinlerle iyi uyumlulu\u011fa sahiptir. Benzersiz \u00f6zelli\u011fi, UV \u0131\u015f\u0131\u011f\u0131n\u0131 kendisinin absorbe etmemesi, ancak malzeme bozunmas\u0131 s\u0131ras\u0131nda olu\u015fan aktif serbest radikalleri yakalayabilmesidir. G\u00fcne\u015ften koruma etkinli\u011fi geleneksel UV emicilerin 2-4 kat\u0131d\u0131r ve malzemenin termal oksidatif ya\u015flanmaya kar\u015f\u0131 direncini de art\u0131rabilir. Polietilen ve polipropilen gibi plastikler i\u00e7in uygundur, d\u00fc\u015f\u00fck toksisiteye sahiptir, ancak \u0131s\u0131 direnci zay\u0131ft\u0131r. \u0130\u015flem s\u0131cakl\u0131\u011f\u0131 270\u00b0C'yi ge\u00e7memelidir ve s\u0131cak suda uzun s\u00fcreli kullan\u0131m i\u00e7in uygun de\u011fildir.<\/p>\n

4. 4-Benzoiloksi-2,2,6,6-tetrametilpiperidin (Engellenmi\u015f Amin)<\/strong><\/h3>\n

Beyaz kristal toz, iyi \u0131s\u0131 direncine sahiptir (280\u00b0C'nin \u00fczerinde bozunma s\u0131cakl\u0131\u011f\u0131), suda \u00e7\u00f6z\u00fcnmez ve toluen ve aseton gibi organik \u00e7\u00f6z\u00fcc\u00fclerde kolayca \u00e7\u00f6z\u00fcn\u00fcr. Etki mekanizmas\u0131 bir \u00f6ncekine benzerdir; ultraviyole \u0131\u015f\u0131\u011f\u0131 do\u011frudan absorbe etmez, ancak aktif serbest radikalleri etkin bir \u015fekilde temizleyerek geleneksel \u00fcr\u00fcnlerin birka\u00e7 kat\u0131 g\u00fcne\u015f koruma etkisi sa\u011flar. Polipropilen, polietilen, polistiren ve poliamid gibi \u00e7e\u015fitli plastiklerle uyumludur ve \u00f6zellikle poliolefin \u00fcr\u00fcnler i\u00e7in uygundur. Renklendirici ve kirletici de\u011fildir ve antioksidanlar ve UV emiciler ile birlikte kullan\u0131ld\u0131\u011f\u0131nda m\u00fckemmel sinerjik etkiler g\u00f6sterir.<\/p>\n

5. 2,4,6-Tris(2\u2032-n-butoxy-phenyl)-1,3,5-triazine<\/strong><\/h3>\n

Light yellow powder, slightly soluble in n-butanol, insoluble in water, and absorbs ultraviolet light in the 300-380nm range. Its sun protection performance is superior to benzophenone-based UV-9 and UV-531<\/a>. It is suitable for plastics such as polyvinyl chloride, polyoxymethylene, and chlorinated polyether, with an addition amount not exceeding 1%. Its drawbacks include slight discoloration, causing the product to have a light yellow tint, and poor compatibility with some resins.\u3002<\/p>\n

6. Heksametilfosforamid<\/strong><\/h3>\n

Hafif bal\u0131ks\u0131 ve buruk bir kokuya sahip renksiz veya a\u00e7\u0131k sar\u0131 \u015feffaf bir s\u0131v\u0131d\u0131r, \u00e7o\u011fu plastikle\u015ftirici ve \u00e7\u00f6z\u00fcc\u00fc ile kar\u0131\u015fabilir ve \"polivinil klor\u00fcr i\u00e7in olduk\u00e7a etkili bir hava ko\u015fullar\u0131na dayan\u0131kl\u0131 madde\" olarak bilinir. Polivinil klor\u00fcr filmlere eklendi\u011finde (2-5 k\u0131s\u0131m), sadece hava ko\u015fullar\u0131na ve so\u011fu\u011fa kar\u015f\u0131 direnci \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131rmakla kalmaz, ayn\u0131 zamanda i\u015fleme s\u0131cakl\u0131\u011f\u0131n\u0131 da yakla\u015f\u0131k 10\u00b0C d\u00fc\u015f\u00fcr\u00fcr. Ayr\u0131ca, poliamid, poli\u00fcretan ve polifenilen s\u00fclfid gibi polimerler i\u00e7in m\u00fckemmel bir \u00e7\u00f6z\u00fcc\u00fc olarak da kullan\u0131labilir, bu da uygulamalar\u0131n\u0131 daha da kapsaml\u0131 hale getirir.<\/p>\n

\"UV<\/p>\n

Sonu\u00e7: UV Absorberlerin Temel De\u011feri ve Se\u00e7im Teknikleri<\/strong><\/h3>\n

\u00d6zetle, UV emiciler<\/a> polimer malzemelerin \"uzun \u00f6m\u00fcrl\u00fcl\u00fck s\u0131rr\u0131d\u0131r\". \u0130ster g\u00fcnl\u00fck plastik sofra tak\u0131mlar\u0131 ve cihaz muhafazalar\u0131, ister d\u0131\u015f mekan plastik borular\u0131 ve kaplamalar\u0131 olsun, bunlar\u0131n korunmas\u0131 vazge\u00e7ilmezdir. Se\u00e7im yaparken, k\u00f6r\u00fc k\u00f6r\u00fcne \"y\u00fcksek performans\" pe\u015finde ko\u015fmaya gerek yoktur; \u00f6nemli olan malzeme ve uygulama senaryosuna uymakt\u0131r: poliolefinler (polietilen, polipropilen) i\u00e7in benzotriazol veya engellenmi\u015f amin t\u00fcrleri tercih edilir; \u015feffaf \/ a\u00e7\u0131k renkli \u00fcr\u00fcnler i\u00e7in benzofenon t\u00fcrleri (UV-9, UV-531) tercih edilir; d\u00fc\u015f\u00fck kaliteli \u00fcr\u00fcnler i\u00e7in salisilat t\u00fcrleri kullan\u0131labilir; ve g\u0131da ile temas eden \u00fcr\u00fcnler i\u00e7in dozaj limitlerine s\u0131k\u0131 s\u0131k\u0131ya ba\u011fl\u0131 kal\u0131nmas\u0131 gerekir.<\/p>\n

Malzeme end\u00fcstrisinin geli\u015fmesiyle birlikte UV emiciler de \"y\u00fcksek verimlilik, d\u00fc\u015f\u00fck toksisite ve geni\u015f uyumlulu\u011fa\" do\u011fru ilerlemektedir. Gelecekte, \u00e7e\u015fitli malzemelerin g\u00fcne\u015ften korunma ihtiya\u00e7lar\u0131n\u0131 daha iyi kar\u015f\u0131layacak, hayat\u0131m\u0131zdaki her polimer \u00fcr\u00fcn\u00fc koruyacak, hizmet \u00f6m\u00fcrlerini uzatacak ve m\u00fckemmel performanslar\u0131n\u0131 s\u00fcrd\u00fcrecekler.<\/p>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

Have you ever noticed that plastic chairs left by the window for a long time become brittle and crack, or that the coating on outdoor railings becomes mottled and faded? This is because ultraviolet…<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[143],"tags":[],"class_list":["post-9513","post","type-post","status-publish","format-standard","hentry","category-uv-light-curing-series"],"yoast_head":"\nHow to Choose a UV Absorber?- Changhong Chemical<\/title>\n<meta name=\"description\" content=\"Have you ever noticed that plastic chairs left by the window for a long time become brittle and crack, and the coating on outdoor railings becomes patchy and faded? Behind this phenomenon, ultraviolet (UV) radiation is silently "degrading" the materials. UV absorbers are essentially "invisible sunscreens" specifically designed for polymer materials. They absorb harmful UV rays from sunlight and convert them into harmless heat, thus protecting plastics, coatings, rubber, and other materials from "sunburn" and aging.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/changhongchemical.com\/tr\/how-to-choose-a-uv-absorber\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Choose a UV Absorber?- Changhong Chemical\" \/>\n<meta property=\"og:description\" content=\"Have you ever noticed that plastic chairs left by the window for a long time become brittle and crack, and the coating on outdoor railings becomes patchy and faded? Behind this phenomenon, ultraviolet (UV) radiation is silently "degrading" the materials. UV absorbers are essentially "invisible sunscreens" specifically designed for polymer materials. 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