{"id":3014,"date":"2020-08-24T07:41:55","date_gmt":"2020-08-24T07:41:55","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=3014"},"modified":"2026-04-28T11:19:22","modified_gmt":"2026-04-28T11:19:22","slug":"why-the-fluorescent-whitening-agent-looks-yellow-and-the-solution","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/tr\/why-the-fluorescent-whitening-agent-looks-yellow-and-the-solution\/","title":{"rendered":"Floresan beyazlatma maddesi neden sar\u0131 g\u00f6r\u00fcn\u00fcyor ve \u00e7\u00f6z\u00fcm"},"content":{"rendered":"\n

Quick answer:<\/strong> For fluorescent-whitening and food-contact discussions, buyers usually focus on specification fit, migration risk, regulatory boundaries, and how the additive behaves in the finished plastic system rather than treating it as a simple color question.<\/p>\n\n\n\n

\u00dcretimin beyazl\u0131\u011f\u0131n\u0131 art\u0131rmak i\u00e7in, hedefe ula\u015fmak i\u00e7in beyazlat\u0131c\u0131 madde miktar\u0131n\u0131 art\u0131rmak istiyoruz, ancak sonu\u00e7 beyaz de\u011fil sararm\u0131\u015f kuma\u015f, verileri kontrol ederek ve nedenlerini analiz ederek, bir\u00e7ok deneyden sonra sararma noktas\u0131n\u0131 ve \u00e7\u00f6z\u00fcm\u00fc bulduk.<\/h4>\n\n\n\n\n

1\u3001 Floresan beyazlatma maddesinin prensibi<\/strong><\/h2>\n\n\n\n

Floresan beyazlatma maddesi \u00e7e\u015fitleri vard\u0131r, \u00e7e\u015fitli liflerin beyazlat\u0131lmas\u0131 farkl\u0131 beyazlatma maddesi markas\u0131na ihtiya\u00e7 duyar, ancak \u00e7e\u015fitli beyazlatma maddesinin kimyasal yap\u0131s\u0131 ve \u00f6zellikleri farkl\u0131d\u0131r, ancak lif veya kuma\u015f\u0131n beyazlatma prensibi ayn\u0131d\u0131r. Beyazlatma prensibi esas olarak toplam konjugat \u00e7ift ba\u011f sistemi i\u00e7eren beyazlat\u0131c\u0131 molek\u00fcller, iyi d\u00fczl\u00fck, g\u00fcne\u015f \u0131\u015f\u0131\u011f\u0131 alt\u0131ndaki \u00f6zel molek\u00fcler yap\u0131 g\u00fcne\u015f \u0131\u015f\u0131\u011f\u0131n\u0131, ultraviyole \u0131\u015f\u0131\u011f\u0131 (300 ~ 400nm dalga boyu) ve mor \u0131\u015f\u0131\u011f\u0131 (420 ~ 500nm dalga boyu) emebilir veya menek\u015fe \u0131\u015f\u0131\u011f\u0131 ve kuma\u015f \u00fczerindeki sar\u0131 \u0131\u015f\u0131kla kar\u0131\u015ft\u0131r\u0131lm\u0131\u015f elyaf beyaz bir \u0131\u015f\u0131\u011fa d\u00f6n\u00fc\u015f\u00fcr, B\u00f6ylece elyaf veya kuma\u015f fark edilir derecede beyaz olur.<\/h4>\n\n\n\n

2 \u3001 Beyazl\u0131\u011f\u0131n azalmas\u0131n\u0131n nedeni<\/strong><\/h2>\n\n\n\n

(1) Kuma\u015f \u00fczerindeki sar\u0131 \u0131\u015f\u0131\u011f\u0131n yo\u011funlu\u011fu s\u0131n\u0131rl\u0131 oldu\u011fundan, ultraviyole \u0131\u015f\u0131\u011f\u0131 emen floresan beyazlatma maddesi taraf\u0131ndan yay\u0131lan tamamlay\u0131c\u0131 renk \u0131\u015f\u0131\u011f\u0131 - mavi ve mor \u0131\u015f\u0131k - da sar\u0131 \u0131\u015f\u0131\u011f\u0131 dengelemek i\u00e7in s\u0131n\u0131rl\u0131d\u0131r (ana dalga boyu yakla\u015f\u0131k 570nm'dir).<\/h4>\n\n\n\n

(2) Floresan parlat\u0131c\u0131n\u0131n beyazlatma etkisi sadece optik parlatma ve tamamlay\u0131c\u0131d\u0131r ve kimyasal a\u011fartman\u0131n yerini alamaz. Bu nedenle, floresan parlat\u0131c\u0131n\u0131n beyazlatma etkisi a\u011fartmas\u0131z kuma\u015f i\u00e7in ideal de\u011fildir.<\/h4>\n\n\n\n

(3) Floresan beyazlatma maddesi prensibine g\u00f6re, beyazlatma maddesinin beyazlatma etkisi esas olarak g\u00fcne\u015f \u0131\u015f\u0131\u011f\u0131ndaki UV i\u00e7eri\u011fine ve elyaf veya kuma\u015f \u00fczerindeki floresan beyazlatma maddesi konsantrasyonuna ba\u011fl\u0131d\u0131r.UV i\u00e7eri\u011fi yeterli oldu\u011funda, kuma\u015f \u00fczerindeki floresan beyazlatma maddesi konsantrasyonu belirli bir aral\u0131kta de\u011fi\u015fir ve kuma\u015f \u00fczerindeki beyazlatma maddesi konsantrasyonunun artmas\u0131yla beyazlatma etkisi artar ve mavi menek\u015fe \u0131\u015f\u0131k yo\u011funlu\u011fu da artar, b\u00f6ylece kuma\u015f \u00fczerindeki baz\u0131 sar\u0131 \u0131\u015f\u0131\u011f\u0131 dengelemek i\u00e7in ve kuma\u015f daha beyaz ve daha beyaz hale gelir.Beyazlat\u0131c\u0131 madde konsantrasyonu belirli bir uygun konsantrasyona y\u00fckseldi\u011finde, yayd\u0131\u011f\u0131 mavi menek\u015fe \u0131\u015f\u0131\u011f\u0131n yo\u011funlu\u011fu, kuma\u015f \u00fczerindeki sar\u0131 \u0131\u015f\u0131\u011f\u0131n yo\u011funlu\u011fu ile tam olarak ayn\u0131d\u0131r, bu da birbirini tam olarak iptal eder ve beyazlatma etkisi en iyisidir ve beyazl\u0131k de\u011feri en y\u00fcksektir.Ancak, beyaz ajan\u0131n dozaj\u0131n\u0131 optimum konsantrasyondan daha fazla artt\u0131r\u0131rsan\u0131z, menek\u015fe \u0131\u015f\u0131k yo\u011funlu\u011fu derecelerinin emilimindeki kuma\u015f, sar\u0131 \u0131\u015f\u0131\u011f\u0131n g\u00fcc\u00fc \u00fczerindeki kuma\u015f\u0131 dengelemekten daha fazla, yans\u0131yan bariz bir beyazlat\u0131c\u0131 ajan mavi menek\u015fe \u0131\u015f\u0131\u011f\u0131d\u0131r, ayn\u0131 zamanda her t\u00fcrl\u00fc beyaz ajan grubunun farkl\u0131 gruplara y\u00fckseltilmesi nedeniyle, i\u015flenen farkl\u0131 tonlar (ye\u015fil \u0131\u015f\u0131k moru, k\u0131rm\u0131z\u0131, mavi vb.) a\u00e7\u0131k\u00e7a g\u00f6sterilir, yukar\u0131daki fakt\u00f6rlerin birle\u015fik eyleminin bir sonucu, gri kuma\u015f\u0131n artmas\u0131, beyazl\u0131\u011f\u0131 daha sonra azal\u0131r.<\/h4>\n\n\n\n

(4) A\u011fart\u0131lm\u0131\u015f kuma\u015f\u0131n depolama yerlerinde asit veya klor gaz\u0131 oldu\u011funda, nem i\u00e7eri\u011fi y\u00fcksektir, suyun s\u0131v\u0131 olmas\u0131 nedeniyle suyu emmesi kolayd\u0131r, Hidrofilik gruplar\u0131n molek\u00fcler \u00e7ekimi alt\u0131nda, Kuma\u015f \u00f6rt\u00fcs\u00fcn\u00fcn nem geri kazan\u0131m\u0131n\u0131n dengelenme e\u011filimi vard\u0131r, kuma\u015f\u0131n sararmas\u0131n\u0131n ve par\u00e7alara ayr\u0131lmas\u0131n\u0131n, kuma\u015f\u0131n nokta nokta lekelenmesinin ve kuma\u015flar\u0131n \u00fcst ve alt katmanlar\u0131nda kanaman\u0131n nedeni budur.<\/h4>\n\n\n\n

(5) Saf olmayan su kalitesi, y\u00fcksek su sertli\u011fi veya a\u011f\u0131r metaller beyazlatma etkisini etkileyebilir.<\/h4>\n\n\n\n

3\u3001 Beyazlat\u0131c\u0131 maddenin sar\u0131 lekeleri<\/strong><\/h2>\n\n\n\n

Beyazlat\u0131c\u0131 maddenin optimum konsantrasyonuna beyazlat\u0131c\u0131 maddenin sararma noktas\u0131 denir. \u00e7e\u015fitli floresan beyazlat\u0131c\u0131lar\u0131n sararma noktalar\u0131 farkl\u0131d\u0131r. \u00f6rne\u011fin, floresan beyazlat\u0131c\u0131 madde DT'nin (polyester i\u00e7in kullan\u0131l\u0131r) sararma noktas\u0131 0.8%'dir, yani DT beyazlat\u0131c\u0131 madde miktar\u0131 0'\u0131 a\u015ft\u0131\u011f\u0131nda.Floresan beyazlatma ajan\u0131 VBL'nin (saf pamuklu kuma\u015f i\u00e7in kullan\u0131l\u0131r) sararma noktas\u0131 0,5 %'dir Floresan beyazlatma ajan\u0131 DCB'nin (akrilik elyaf\u0131 beyazlatmak i\u00e7in kullan\u0131l\u0131r) sararma noktas\u0131 0,8%'dir Floresan beyazlatma ajan\u0131 CH'nin (akrilik d\u00f6kme iplik i\u00e7in kullan\u0131l\u0131r) sararma noktas\u0131 3,3 %'dir. BlankophorBBU (s\u0131v\u0131, Bayer \u00fcr\u00fcnleri, saf pamuklu kuma\u015flar i\u00e7in) 1.26%; Uvite ERN - P (polyester kuma\u015fta kullan\u0131lan CGY firmas\u0131n\u0131n bir \u00fcr\u00fcn\u00fc) 0.8%; Uvite EBF 250 %C hamur MCGY \u00fcr\u00fcnleri, polyester kuma\u015flarda kullan\u0131l\u0131r) 3 % sararma noktas\u0131na sahiptir.<\/h4>\n\n\n\n

4\u3001 \u00c7\u00f6z\u00fcmler<\/strong><\/h2>\n\n\n\n

(1) \u00dcretim s\u00fcrecinde bir dizi ilgili \u00f6nlem al\u0131nmal\u0131d\u0131r, \u00f6rne\u011fin kaynatma ve a\u011fartma s\u00fcrecinde, asitleme sonras\u0131 y\u0131kama yeterli olmal\u0131d\u0131r; Sabun kal\u0131nt\u0131s\u0131n\u0131 en aza indirmek i\u00e7in sabunlama; Beyazlatmak i\u00e7in yumu\u015fak su kullan\u0131lmal\u0131 ve pH de\u011feri alkali olmal\u0131d\u0131r (pH8 ~ 9).Floresan beyazlatma ajan\u0131, Uvitex RT, CF, BT (ciba -jiagi \u015firketi); Tinopal2B, SP (ciba -jiaggi), Leucophor B (sandex); BlankophorBBU (Bayer, inc.) ve benzeri gibi asit direnci iyi olan \u00fcr\u00fcnleri se\u00e7melidir.<\/h4>\n\n\n\n

(2) Geleneksel i\u015flem: ovma ve a\u011fartma - s\u0131cak suyla y\u0131kama - asit - deoksidasyon - suyla y\u0131kama Glasiyal asetik asit s\u0131cak sudan sonra y\u0131kan\u0131r Glasiyal asetik asit u\u00e7ucu asittir, ge\u00e7irgenli\u011fi zay\u0131ft\u0131r, kostik soday\u0131 sadece elyaf y\u00fczeyinde n\u00f6tralize edebilir, elyaf\u0131n i\u00e7ine n\u00fcfuz etmesi zordur.\u00d6zellikle kal\u0131n kuma\u015flar, genellikle i\u00e7 elyafta art\u0131k kostik soda b\u0131rak\u0131r, bu nedenle n\u00f6tralize edici asit sadece elyaf y\u00fczeyindeki kostik soday\u0131 n\u00f6tralize etmekle kalmaz, ayn\u0131 zamanda elyaf i\u00e7indeki kostik soday\u0131 da n\u00f6tralize eder, b\u00f6ylece tam n\u00f6tralizasyon etkisi elde edilebilir. Bu arada, tamamen n\u00f6tralize etmek i\u00e7in a\u015f\u0131r\u0131 asitlik s\u00fcresi ve s\u0131cakl\u0131\u011f\u0131 s\u0131k\u0131 bir \u015fekilde kontrol edilmelidir. Bu nedenle, a\u015f\u0131r\u0131 asitlik s\u00fcresi 15 dakikadan 30 dakikaya de\u011fi\u015ftirilmelidir. 190 g\/m2 veya daha fazla k\u00fctleye sahip a\u011f\u0131r kuma\u015flar\u0131n a\u011fart\u0131lmas\u0131 i\u00e7in bu \u00f6zellikle \u00f6nemlidir.<\/h4>\n\n\n\n

(3) Katyonik yumu\u015fat\u0131c\u0131, zay\u0131f katyonik yumu\u015fat\u0131c\u0131 ve normal silikon ya\u011f\u0131 beyaz kuma\u015flarda farkl\u0131 derecelerde sararmaya neden olabilir Anyon yumu\u015fat\u0131c\u0131 genellikle sararmaya neden olmaz ve beyaz kuma\u015flar i\u00e7in tercih edilir.<\/h4>\n\n\n\n

(4) Kuma\u015f, asit veya klor gibi gazlarla temastan ka\u00e7\u0131nmal\u0131d\u0131r.<\/h4>\n\n\n\n

(5) Yumu\u015fak su kullan\u0131lmal\u0131d\u0131r, y\u00fcksek su sertli\u011fi beyazlatma etkisini azaltacakt\u0131r. Sudaki asit, serbest klor ve bak\u0131r ve demir gibi a\u011f\u0131r metal iyonlar\u0131 beyazlatma etkisini \u00f6nemli \u00f6l\u00e7\u00fcde etkileyebilir.<\/h4>\n\n\n\n

(6) Floresan beyazlatma maddesinin dozaj\u0131n\u0131 kontrol edin.<\/h4>\n\n\n\n

<\/p>\n\n\n\n

Bu makale Longchang Kimya Ar-Ge Departman\u0131 taraf\u0131ndan yaz\u0131lm\u0131\u015ft\u0131r. Kopyalaman\u0131z ve yeniden basman\u0131z gerekiyorsa, l\u00fctfen kayna\u011f\u0131 belirtin.<\/h4>\n\n\n\n

A\u015fa\u011f\u0131da firmam\u0131z taraf\u0131ndan sat\u0131lan floresan parlat\u0131c\u0131 serisi \u00fcr\u00fcnler yer almaktad\u0131r.<\/h4>\n\n\n\n
Optik Parlat\u0131c\u0131 OB-1<\/a><\/td>1533-45-5<\/td><\/tr>
Floresan Parlat\u0131c\u0131 OB<\/a><\/td>7128-64-5<\/td><\/tr>
Floresan Parlat\u0131c\u0131 ER-II<\/a><\/td>13001-38-2<\/td><\/tr>
Optik Parlat\u0131c\u0131 CBS-X<\/a><\/td>27344-41-8<\/td><\/tr>
Optik Parlat\u0131c\u0131 FP-127<\/a><\/td>40470-68-6<\/td><\/tr>
I\u015f\u0131k Sabitleyici-944<\/a><\/td>70624-18-9<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

How buyers usually evaluate specialty additives in compliance-sensitive plastics<\/h2>\n

Food-contact and compliance-sensitive additive projects usually need a tighter screen than general industrial formulations. The strongest path usually combines specification review, migration thinking, and validation in the real polymer system.<\/p>\n

    \n
  • Start from the regulatory boundary:<\/strong> customer and market requirements often decide the screening route before formulation optimization begins.<\/li>\n
  • Check the polymer and processing route:<\/strong> the same additive can behave differently across resin systems, temperatures, and contact conditions.<\/li>\n
  • Review appearance together with compliance:<\/strong> visual performance still needs to be balanced against safety and documentation needs.<\/li>\n<\/ul>\n

    FAQ for buyers and formulators<\/h3>\n

    Why do compliance-sensitive plastic additives need more than a basic specification check?<\/strong>
    Because end-use exposure, migration limits, and customer requirements can change whether an additive is commercially acceptable.<\/p>\n

    Is visual effect enough to justify additive selection in food-contact plastics?<\/strong>
    Usually no. Appearance needs to be reviewed together with processing, documentation, and compliance fit.<\/p>\n","protected":false},"excerpt":{"rendered":"

    In order to improve the whiteness of the production, we want to increase the amount of whitening agent to achieve the goal, but the result is not white but yellowing<\/p>","protected":false},"author":1,"featured_media":3016,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3014","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"\nWhy the fluorescent whitening agent looks yellow and the solution - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"In order to improve the whiteness of the production, we want to increase the amount of whitening agent to achieve the goal, but the result is not white...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangchemical.com\/tr\/why-the-fluorescent-whitening-agent-looks-yellow-and-the-solution\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why the fluorescent whitening agent looks yellow and the solution - 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