{"id":5596,"date":"2022-09-23T08:37:38","date_gmt":"2022-09-23T08:37:38","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=5596"},"modified":"2026-04-28T10:42:08","modified_gmt":"2026-04-28T10:42:08","slug":"uv-oligomers-used-in-light-curing-coatings","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/tr\/uv-oligomers-used-in-light-curing-coatings\/","title":{"rendered":"I\u015f\u0131kla sertle\u015fen kaplamalarda kullan\u0131lan UV oligomerleri"},"content":{"rendered":"

I\u015f\u0131kla sertle\u015fen kaplamalarda kullan\u0131lan UV oligomerleri<\/strong><\/h1>\n

<\/p>\n

Quick answer:<\/strong> UV monomers and oligomers are usually chosen by viscosity, adhesion, flexibility, shrinkage, and cure speed as a package. The most reliable formulas come from balancing those properties rather than maximizing only one.<\/p>\n

<\/p>\n

I\u015f\u0131kla sertle\u015fen kaplamalarda kullan\u0131lan oligomer, k\u00fc\u00e7\u00fck molek\u00fcl a\u011f\u0131rl\u0131\u011f\u0131na sahip, polimerizasyon gruplar\u0131n\u0131n \u00f6zelliklerine sahip, viskoziteli, \u0131\u015f\u0131kla sertle\u015fen kaplama filminin ana g\u00f6vdesi olan prepolimer olarak da bilinir. I\u015f\u0131kla k\u00fcrleme, doymam\u0131\u015f molek\u00fcller aras\u0131ndaki polimerizasyon reaksiyonudur, ba\u015flat\u0131c\u0131 ba\u015flatma mekanizmas\u0131na g\u00f6re, serbest radikal polimerizasyonu ve katyonik polimerizasyon vard\u0131r, daha yayg\u0131n olan\u0131 serbest radikal polimerizasyonudur, bu C-C polimerizasyon \u00e7apraz ba\u011flama reaksiyonu sert bir \u00e7apraz ba\u011flamad\u0131r. Serbest radikal polimerizasyon reaksiyonu h\u0131zl\u0131d\u0131r, b\u00fcz\u00fclme b\u00fcy\u00fckt\u00fcr; polimerizasyon derecesi de\u011fi\u015fimi k\u00fc\u00e7\u00fckt\u00fcr, bloke edici polimerizasyon etkisi b\u00fcy\u00fckt\u00fcr (reaksiyonu \u00f6nlemek i\u00e7in bloke edici ajan\u0131n 0.01-0.1%'si). \u00c7apraz ba\u011flama b\u00fcz\u00fclme oran\u0131n\u0131n k\u00fcrlenmesinden sonra \u0131\u015f\u0131kla sertle\u015fen kaplamalar y\u00fcksektir, \u00e7al\u0131\u015fma, \u00e7ift ba\u011f\u0131n aral\u0131\u011f\u0131 uzun oldu\u011funda polimerize olmad\u0131\u011f\u0131n\u0131, bir kez polimerize oldu\u011funda, kovalent ba\u011flar\u0131n olu\u015fumunun, aral\u0131\u011f\u0131n k\u0131sald\u0131\u011f\u0131n\u0131, hacim azalmas\u0131na neden oldu\u011funu, t\u00fcm doymam\u0131\u015f polimerizasyon \u00e7ift ba\u011f b\u00fcz\u00fclmesinin 11%'ye kadar oldu\u011funu buldu.<\/p>\n

I\u015f\u0131kla sertle\u015fen kaplama form\u00fclasyonlar\u0131, a\u015fa\u011f\u0131daki performans ile karma\u015f\u0131kl\u0131\u011fa sahiptir.<\/p>\n

\u0130lk olarak, bir\u00e7ok monomer t\u00fcr\u00fc ve bir\u00e7ok baz oligomer (re\u00e7ine) t\u00fcr\u00fc vard\u0131r. \u015eu anda, fonksiyonel gruplar\u0131n sentezine g\u00f6re doymam\u0131\u015f polyester s\u0131n\u0131f\u0131 PE, epoksi EA, poli\u00fcretan s\u0131n\u0131f\u0131 PUA, polyester s\u0131n\u0131f\u0131 PEA, amino s\u0131n\u0131f\u0131, polieter s\u0131n\u0131f\u0131, organosilikon s\u0131n\u0131f\u0131, fosfat ester s\u0131n\u0131f\u0131, kar\u0131\u015f\u0131k s\u0131n\u0131f vb.<\/p>\n

\u0130kinci olarak, re\u00e7inede yayg\u0131n olarak kullan\u0131lan \u0131\u015f\u0131kla sertle\u015fen kaplamalar\u0131n i\u015flevine g\u00f6re a\u015fa\u011f\u0131daki kategorilere sahiptir.<\/p>\n

1\u3001Sert re\u00e7ine-Y\u00fcksek Tg, y\u00fcksek sertlik, iyi kimyasal \u00f6zellikler, \u00e7o\u011fu k\u00fcrlenme h\u0131z\u0131. Standart bisfenol A EA gibi; y\u00fcksek fonksiyonel grup PUA ve k\u00fc\u00e7\u00fck molek\u00fcler a\u011f\u0131rl\u0131kl\u0131 2fPUA; y\u00fcksek fonksiyonel grup amino akrilat; metakrilat oligomerleri, vb.<\/p>\n

2, yumu\u015fak re\u00e7ine - Tg k\u00fc\u00e7\u00fck, iyi esneklik, yava\u015f k\u00fcrlenme h\u0131z\u0131, d\u00fc\u015f\u00fck \u00e7apraz ba\u011f yo\u011funlu\u011fu. Modifiye epoksi - epoksi soya fasulyesi ya\u011f\u0131 akrilat\u0131 vb. gibi; uzun zincirli polyester akrilat; ortalama molek\u00fcler a\u011f\u0131rl\u0131\u011f\u0131 1200 PUA'dan fazla olan d\u00fcz zincirli yap\u0131; baz\u0131 saf akrilat oligomerleri vb.<\/p>\n

3, polar re\u00e7ine, aktif hidrojen i\u00e7eren veya hidrojen ba\u011flar\u0131 olu\u015fturmas\u0131 kolay oligomerdir, polariteyi veya y\u00fczey gerilimini de\u011fi\u015ftirebilir. Fosfat akrilat gibi; silikon oligomerler; karboksil akrilat oligomerler, vb.<\/p>\n

4, su bazl\u0131 UV oligomerleri, yayg\u0131n em\u00fclsiyon tipi, su-dispersiyon tipi, suda \u00e7\u00f6z\u00fcn\u00fcr tip.<\/p>\n

5, \u0131\u015f\u0131kla sertle\u015fen kaplamalar\u0131n form\u00fclasyonunda \u00e7apraz ba\u011flanmayan s\u0131n\u0131f re\u00e7ineler bir dolgu rol\u00fcne sahiptir, \u00e7apraz ba\u011flanma yo\u011funlu\u011funu artt\u0131r\u0131r, yap\u0131\u015fmay\u0131 artt\u0131r\u0131r, esnekli\u011fi de\u011fi\u015ftirir, \u0131slanabilirli\u011fi ve di\u011fer rolleri artt\u0131r\u0131r. Genellikle bu re\u00e7ineler uzun ya\u011fl\u0131 alkid re\u00e7inesi; termoplastik akrilat re\u00e7inesi; aldehit ve keton re\u00e7inesi; petrol re\u00e7inesi vb.dir.<\/p>\n

\u00dc\u00e7\u00fcnc\u00fc olarak, re\u00e7ine se\u00e7imi yap\u0131l\u0131rken \u0131\u015f\u0131kla sertle\u015fen (UV) kaplama form\u00fcl\u00fcn\u00fcn tasar\u0131m\u0131.<\/p>\n

Kaplama form\u00fcl\u00fcn\u00fc tasarlamadan \u00f6nce, kaplama tipi net olmal\u0131d\u0131r, yani astar, son kat veya renkli boya; ve kaplanan malzemenin polarite boyutu (y\u00fczey gerilimi), kristalizasyonlu veya kristalizasyonsuz, termoplastik veya termoset vb. gibi temel \u00f6zelliklerini anlamak. Spesifik a\u00e7\u0131klama a\u015fa\u011f\u0131daki gibidir.<\/p>\n

1, astar re\u00e7inesi se\u00e7imi. Her \u015feyden \u00f6nce, astar re\u00e7inesinin genelli\u011fi olan yap\u0131\u015fma gereklili\u011fidir; renk ve dolgu maddesinin \u0131slat\u0131lmas\u0131n\u0131 ve iki farkl\u0131 gereksinim olan alt tabakan\u0131n \u0131slat\u0131lmas\u0131n\u0131 ifade eden \u0131slanabilirlik, \u00e7\u00fcnk\u00fc alt tabakan\u0131n ve renkli dolgu maddesinin y\u00fczey gerilimi tam olarak ayn\u0131 olmayacakt\u0131r; esas olarak z\u0131mparalama ve ara katman yap\u0131\u015fmas\u0131n\u0131 i\u00e7eren esneklik.<\/p>\n

2\u3001Son kat i\u00e7in re\u00e7ine se\u00e7imi. Son kat\u0131n performans\u0131 ve re\u00e7ine se\u00e7imi a\u015fa\u011f\u0131da a\u00e7\u0131klanm\u0131\u015ft\u0131r.<\/p>\n

Filmin dolgunlu\u011fu ve d\u00fczl\u00fc\u011f\u00fc. Bu gereksinimi elde etmek i\u00e7in, iyi uyumlulu\u011fa sahip uyumlu re\u00e7ineler ve monomerler se\u00e7mek, astar ile \u0131slatma ve tesviyeyi iyile\u015ftirmek, \u00e7apraz ba\u011flanma derecesini uygun \u015fekilde art\u0131rmak ve daha y\u00fcksek bir k\u0131r\u0131lma indisi re\u00e7inesi se\u00e7mek gerekir.<\/p>\n

Tokluk, esas olarak sertlik ve a\u015f\u0131nma direncini i\u00e7erir. Bu iki \u00f6zellik birbiriyle ili\u015fkilidir ancak ayn\u0131 olmak zorunda de\u011fildir ve farkl\u0131 \u015fekilde ele al\u0131nmalar\u0131 gerekir.<\/p>\n

Ara katman yap\u0131\u015fmas\u0131. Ara katman yap\u0131\u015fma \u00e7\u00f6z\u00fcm\u00fcn\u00fcn \u0131slatma ve tesviye ile re\u00e7ine polaritesini kar\u015f\u0131lamas\u0131 gerekir.<\/p>\n

EA, PUA (polyester) iyi kimyasal dirence sahiptir, PE, polieter daha zay\u0131ft\u0131r; genellikle, alifatik PUA, saf polieter akrilat, saf C, amino s\u0131n\u0131f\u0131 iyi sararma direncine sahiptir, uygun sararma \u00f6nleyici maddenin eklenmesinin form\u00fclasyonu da son kat\u0131n sararma direncini etkili bir \u015fekilde art\u0131rabilir.<\/p>\n

Matl\u0131k gereksinimi. Molek\u00fcl a\u011f\u0131rl\u0131\u011f\u0131 biraz daha k\u00fc\u00e7\u00fck veya \u00e7ok b\u00fcy\u00fck olan baz\u0131 re\u00e7ineler belirli bir mat etkiye sahip olacakt\u0131r; baz\u0131 poli\u00fcretan re\u00e7ine mat etkisi de iyidir.<\/p>\n

<\/p>\n

How buyers usually evaluate UV monomers and resin systems<\/h2>\n

Most successful UV formulations are built by choosing the backbone first and then tuning the reactive monomer package around the substrate, cure method, and end-use stress. That usually produces a more stable result than choosing materials by viscosity or price alone.<\/p>\n