Epoksi re\u00e7ine ve politiol monomerinin reaksiyon mekanizmas\u0131?<\/p>\n
Epoksi re\u00e7ineler ve politiyoller aras\u0131ndaki reaksiyon mekanizmas\u0131 temel olarak tiyol grubu ve epoksi grubu aras\u0131ndaki etkile\u015fimi i\u00e7erir. A\u015fa\u011f\u0131da detayl\u0131 reaksiyon mekanizmas\u0131 verilmi\u015ftir:
\nReaksiyon ba\u015flatma:<\/p>\n
Politiyoller ve epoksi re\u00e7ineler aras\u0131ndaki reaksiyon s\u0131ras\u0131nda, tersiyer amin \u00fczerindeki payla\u015f\u0131lmam\u0131\u015f elektron \u00e7ifti ilk olarak tiyol grubunun aktif hidrojenini yakalayacak ve bu da s\u00fclf\u00fcr atomu \u00fczerinde anyonik bir y\u00fcke neden olacakt\u0131r.<\/p>\n
<\/p>\n
N\u00fckleofilik ekleme reaksiyonu:<\/p>\n
Negatif y\u00fckl\u00fc s\u00fclf\u00fcr atomu, n\u00fckleofilik ekleme reaksiyonu ad\u0131 verilen bir s\u00fcre\u00e7te epoksi re\u00e7ine \u00fczerindeki alfa karbon atomu ile reaksiyona girer.<\/p>\n
Bu reaksiyon epoksi re\u00e7inenin \u00fc\u00e7l\u00fc epoksi grubunun iki hidroksil grubu olu\u015fturacak \u015fekilde a\u00e7\u0131lmas\u0131yla sonu\u00e7lan\u0131r.<\/p>\n
<\/p>\n
Tiyol-oksijen ba\u011flar\u0131 olu\u015fur:<\/p>\n
Tiyol grubundaki s\u00fclf\u00fcr atomu, epoksi grubundaki oksijen atomu ile n\u00fckleofilik bir ekleme reaksiyonunda reaksiyona girerek k\u00fcrleme i\u015fleminde \u00f6nemli bir ad\u0131m olan bir s\u00fclf\u00fcr-oksijen ba\u011f\u0131 olu\u015fturur.<\/p>\n
<\/p>\n
\u00c7apraz ba\u011f yap\u0131s\u0131 olu\u015fumu:<\/p>\n
Epoksi re\u00e7inede olu\u015fan iki hidroksil grubu, \u00e7apraz ba\u011fl\u0131 bir yap\u0131 olu\u015fturmak i\u00e7in politiolde bulunan merkaptan gruplar\u0131 ile reaksiyona girer.<\/p>\n
Bu \u00e7apraz ba\u011flanma yap\u0131s\u0131 politiol\u00fc epoksi re\u00e7ineye ba\u011flar.<\/p>\n
<\/p>\n
K\u00fcrleme Sonu\u00e7lar\u0131:<\/p>\n
Yukar\u0131daki reaksiyon sayesinde, politiyol ve epoksi re\u00e7ine birle\u015ferek a\u015f\u0131nmaya, korozyona ve y\u00fcksek s\u0131cakl\u0131klara dayan\u0131kl\u0131 kat\u0131 bir malzeme olu\u015fturur.<\/p>\n
<\/p>\n
Reaksiyon \u00d6zellikleri:<\/p>\n
Polis\u00fclfitle sertle\u015fen epoksinin k\u00fcrlenme s\u00fcresi genellikle birka\u00e7 dakika ile birka\u00e7 saat aras\u0131ndad\u0131r ve y\u00fcksek s\u0131cakl\u0131k veya y\u00fcksek bas\u0131n\u00e7 i\u015flemi gerektirmez, bu da end\u00fcstriyel \u00fcretimde yayg\u0131n olarak kullan\u0131lmas\u0131n\u0131 sa\u011flar.<\/p>\n
K\u00fcrlenmi\u015f malzeme, a\u015f\u0131nma direnci, korozyon direnci, iyi yal\u0131t\u0131m ve di\u011fer \u00f6zellikler gibi m\u00fckemmel fiziksel ve kimyasal \u00f6zelliklere sahiptir.<\/p>\n
\u00d6zet olarak, epoksi re\u00e7ine ve politiol\u00fcn reaksiyon mekanizmas\u0131, n\u00fckleofilik ekleme reaksiyonu ve \u00e7apraz ba\u011fl\u0131 yap\u0131 olu\u015fumu yoluyla iki malzemenin yak\u0131n ba\u011flanmas\u0131n\u0131 ve k\u00fcrlenmesini ger\u00e7ekle\u015ftiren karma\u015f\u0131k ancak olduk\u00e7a verimli bir s\u00fcre\u00e7tir.<\/p>\n
<\/p>\n
En ba\u015far\u0131l\u0131 UV form\u00fclasyonlar\u0131, \u00f6nce ana iskeleti se\u00e7ip ard\u0131ndan reaktif monomer paketini alt tabaka, k\u00fcrleme y\u00f6ntemi ve son kullan\u0131m gerilimine g\u00f6re ayarlayarak olu\u015fturulur. Bu, genellikle yaln\u0131zca viskozite veya fiyata g\u00f6re malzeme se\u00e7mekten daha istikrarl\u0131 bir sonu\u00e7 verir.<\/p>\n
Tek bir UV monomeri veya re\u00e7inesi her form\u00fclasyon sorununu \u00e7\u00f6zebilir mi?<\/strong> Monomerler neden oligomerlerle birlikte taranmal\u0131d\u0131r?<\/strong> <\/p>\n <\/p>\n H\u0131zl\u0131 cevap:<\/strong> Pratik UV form\u00fclasyon \u00e7al\u0131\u015fmalar\u0131nda, re\u00e7ine ve monomer se\u00e7imi \u00f6ncelikle hedeflenen son kullan\u0131m \u00f6zelli\u011finden yola \u00e7\u0131k\u0131larak yap\u0131l\u0131r, ard\u0131ndan viskozite ve k\u00fcrlenme tepkisi bu hedefe g\u00f6re ayarlan\u0131r. Al\u0131c\u0131lar genellikle tek bir sihirli ham madde yerine, birbirine uyan birka\u00e7 paketi k\u0131sa listeye al\u0131rlar.<\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>","protected":false},"excerpt":{"rendered":" The reaction mechanism between epoxy resins and polythiols mainly involves the interaction between the thiol group and the epoxy group. The following is the detailed reaction mechanism: Reaction initiation: During<\/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-7479","post","type-post","status-publish","format-standard","hentry","category-uv-light-curing-series"],"yoast_head":"\n
Genellikle hay\u0131r. Ticari olarak g\u00fc\u00e7l\u00fc form\u00fcller, k\u00fcrlenme, yap\u0131\u015fma, ak\u0131\u015f ve dayan\u0131kl\u0131l\u0131\u011f\u0131 dengelemek i\u00e7in \u00e7e\u015fitli bile\u015fenlerin nas\u0131l birlikte \u00e7al\u0131\u015ft\u0131\u011f\u0131na ba\u011fl\u0131d\u0131r.<\/p>\n
\u00c7\u00fcnk\u00fc monomerler viskoziteyi, k\u00fcrlenme h\u0131z\u0131n\u0131, b\u00fcz\u00fclmeyi ve alt tabaka davran\u0131\u015f\u0131n\u0131, ayn\u0131 ana re\u00e7inenin nihai s\u0131ralamas\u0131n\u0131 de\u011fi\u015ftirecek kadar etkileyebilir.<\/p>\n\u015eimdi Bize Ula\u015f\u0131n!<\/b><\/strong><\/h2>\n
Fiyata ihtiyac\u0131n\u0131z varsa, l\u00fctfen a\u015fa\u011f\u0131daki forma ileti\u015fim bilgilerinizi doldurun, genellikle 24 saat i\u00e7inde sizinle ileti\u015fime ge\u00e7ece\u011fiz. Bana e-posta da g\u00f6nderebilirsiniz info@longchangchemical.com<\/a><\/span> \u00c7al\u0131\u015fma saatleri i\u00e7inde (8:30 - 6:00 UTC+8 Pzt.~Sat.) veya h\u0131zl\u0131 yan\u0131t almak i\u00e7in web sitesi canl\u0131 sohbetini kullan\u0131n.<\/b><\/strong><\/h4>\n
\n\n\n
\n Politiyol\/Polimerkaptan<\/strong><\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n DMES Monomer<\/a><\/span><\/td>\n Bis(2-mercaptoethyl) sulfide<\/td>\n 3570-55-6<\/td>\n<\/tr>\n \n DMPT Monomer<\/a><\/span><\/td>\n THIOCURE DMPT<\/td>\n 131538-00-6<\/td>\n<\/tr>\n \n PETMP Monomer<\/a><\/span><\/td>\n PENTAERITRITOL TETRA (3-MERKAPTOPROPIYONAT)<\/td>\n 7575-23-7<\/td>\n<\/tr>\n \n PM839 Monomer<\/a><\/span><\/td>\n Polioksi (metil-1,2-etanediyl)<\/td>\n 72244-98-5<\/td>\n<\/tr>\n \n Monofonksiyonel Monomer<\/strong><\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n HEMA Monomer<\/a><\/span><\/td>\n 2-hidroksietil metakrilat<\/td>\n 868-77-9<\/td>\n<\/tr>\n \n HPMA Monomer<\/a><\/span><\/td>\n 2-Hidroksipropil metakrilat<\/td>\n 27813-02-1<\/td>\n<\/tr>\n \n THFA Monomer<\/a><\/span><\/td>\n Tetrahidrofurfuril akrilat<\/td>\n 2399-48-6<\/td>\n<\/tr>\n \n HDCPA Monomer<\/a><\/span><\/td>\n Hidrojenlenmi\u015f disiklopentenil akrilat<\/td>\n 79637-74-4<\/td>\n<\/tr>\n \n DCPMA Monomer<\/a><\/span><\/td>\n Dihydrodicyclopentadienyl methacrylate<\/td>\n 30798-39-1<\/td>\n<\/tr>\n \n DCPA Monomer<\/a><\/span><\/td>\n Dihidrodisiklopentadienil Akrilat<\/td>\n 12542-30-2<\/td>\n<\/tr>\n \n DCPEMA Monomer<\/a><\/span><\/td>\n Disiklopenteniloksietil Metakrilat<\/td>\n 68586-19-6<\/td>\n<\/tr>\n \n DCPEOA Monomer<\/a><\/span><\/td>\n Disiklopenteniloksietil Akrilat<\/td>\n 65983-31-5<\/td>\n<\/tr>\n \n NP-4EA Monomer<\/a><\/span><\/td>\n (4) etoksillenmi\u015f nonilfenol<\/td>\n 50974-47-5<\/td>\n<\/tr>\n \n LA Monomer<\/td>\n Lauril akrilat \/ Dodesil akrilat<\/td>\n 2156-97-0<\/td>\n<\/tr>\n \n THFMA Monomer<\/a><\/span><\/td>\n Tetrahidrofurfuril metakrilat<\/td>\n 2455-24-5<\/td>\n<\/tr>\n \n PHEA Monomer<\/span><\/a><\/td>\n 2-FENOKSIETIL AKRILAT<\/td>\n 48145-04-6<\/td>\n<\/tr>\n \n LMA Monomer<\/a><\/span><\/td>\n Lauril metakrilat<\/td>\n 142-90-5<\/td>\n<\/tr>\n \n IDA Monomer<\/a><\/span><\/td>\n \u0130zodesil akrilat<\/td>\n 1330-61-6<\/td>\n<\/tr>\n \n IBOMA Monomer<\/a><\/span><\/td>\n \u0130zobornil metakrilat<\/td>\n 7534-94-3<\/td>\n<\/tr>\n \n IBOA Monomer<\/a><\/span><\/td>\n \u0130zobornil akrilat<\/td>\n 5888-33-5<\/td>\n<\/tr>\n \n EOEOEA Monomer<\/a><\/span><\/td>\n 2-(2-Etoksietoksi)etil akrilat<\/td>\n 7328-17-8<\/td>\n<\/tr>\n \n \u00c7ok fonksiyonlu monomer<\/strong><\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n DPHA Monomer<\/a><\/span><\/td>\n Dipentaeritritol hekzaakrilat<\/td>\n 29570-58-9<\/td>\n<\/tr>\n \n DI-TMPTA Monomer<\/a><\/span><\/td>\n DI(TRIMETILOLPROPAN) TETRAAKRILAT<\/td>\n 94108-97-1<\/td>\n<\/tr>\n \n Akrilamid monomer<\/strong><\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n ACMO Monomer<\/a><\/span><\/td>\n 4-akriloilmorfolin<\/td>\n 5117-12-4<\/td>\n<\/tr>\n \n Di-fonksiyonel Monomer<\/strong><\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n PEGDMA Monomer<\/a><\/span><\/td>\n Poli(etilen glikol) dimetakrilat<\/td>\n 25852-47-5<\/td>\n<\/tr>\n \n TPGDA Monomer<\/a><\/span><\/td>\n Tripropilen glikol diakrilat<\/td>\n 42978-66-5<\/td>\n<\/tr>\n \n TEGDMA Monomer<\/a><\/span><\/td>\n Trietilen glikol dimetakrilat<\/td>\n 109-16-0<\/td>\n<\/tr>\n \n PO2-NPGDA Monomer<\/span><\/a><\/td>\n Propoksilat neopentilen glikol diakrilat<\/td>\n 84170-74-1<\/td>\n<\/tr>\n \n PEGDA Monomer<\/a><\/span><\/td>\n Polietilen Glikol Diakrilat<\/td>\n 26570-48-9<\/td>\n<\/tr>\n \n PDDA Monomer<\/a><\/span><\/td>\n Ftalat dietilen glikol diakrilat<\/td>\n <\/td>\n<\/tr>\n \n NPGDA Monomer<\/a><\/span><\/td>\n Neopentil glikol diakrilat<\/td>\n 2223-82-7<\/td>\n<\/tr>\n \n HDDA Monomer<\/a><\/span><\/td>\n Heksametilen Diakrilat<\/td>\n 13048-33-4<\/td>\n<\/tr>\n \n EO4-BPADA Monomer<\/span><\/a><\/td>\n ETOKSILLENMI\u015e (4) BISFENOL A DIAKRILAT<\/td>\n 64401-02-1<\/td>\n<\/tr>\n \n EO10-BPADA Monomer<\/a><\/span><\/td>\n ETOKSILLENMI\u015e (10) BISFENOL A DIAKRILAT<\/td>\n 64401-02-1<\/td>\n<\/tr>\n \n EGDMA Monomer<\/a><\/span><\/td>\n Etilen glikol dimetakrilat<\/td>\n 97-90-5<\/td>\n<\/tr>\n \n DPGDA Monomer<\/a><\/span><\/td>\n Dipropilen Glikol Dienoat<\/td>\n 57472-68-1<\/td>\n<\/tr>\n \n Bis-GMA Monomer<\/a><\/span><\/td>\n Bisfenol A Glisidil Metakrilat<\/td>\n 1565-94-2<\/td>\n<\/tr>\n \n \u00dc\u00e7 Fonksiyonlu Monomer<\/strong><\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n TMPTMA Monomer<\/a><\/span><\/td>\n Trimetilolpropan trimetakrilat<\/td>\n 3290-92-4<\/td>\n<\/tr>\n \n TMPTA Monomer<\/a><\/span><\/td>\n Trimetilolpropan triakrilat<\/td>\n 15625-89-5<\/td>\n<\/tr>\n \n PETA Monomer<\/a><\/span><\/td>\n Pentaeritritol triakrilat<\/td>\n 3524-68-3<\/td>\n<\/tr>\n \n GPTA (G3POTA) Monomer<\/a><\/span><\/td>\n GLISERIL PROPOKSI TRIAKRILAT<\/td>\n 52408-84-1<\/td>\n<\/tr>\n \n EO3-TMPTA Monomer<\/a><\/span><\/td>\n Etoksillenmi\u015f trimetilolpropan triakrilat<\/td>\n 28961-43-5<\/td>\n<\/tr>\n \n Fotorezist Monomer<\/strong><\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n IPAMA Monomer<\/a><\/span><\/td>\n 2-izopropil-2-adamantil metakrilat<\/td>\n 297156-50-4<\/td>\n<\/tr>\n \n ECPMA Monomer<\/a><\/span><\/td>\n 1-Etilsiklopentil Metakrilat<\/td>\n 266308-58-1<\/td>\n<\/tr>\n \n ADAMA Monomer<\/a><\/span><\/td>\n 1-Adamantil Metakrilat<\/td>\n 16887-36-8<\/td>\n<\/tr>\n \n Metakrilat monomer<\/strong><\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n TBAEMA Monomer<\/a><\/span><\/td>\n 2-(Tert-b\u00fctilamino)etil metakrilat<\/td>\n 3775-90-4<\/td>\n<\/tr>\n \n NBMA Monomer<\/a><\/span><\/td>\n n-B\u00fctil metakrilat<\/td>\n 97-88-1<\/td>\n<\/tr>\n \n MEMA Monomer<\/a><\/span><\/td>\n 2-Metoksietil Metakrilat<\/td>\n 6976-93-8<\/td>\n<\/tr>\n \n i-BMA Monomer<\/a><\/span><\/td>\n \u0130zob\u00fctil metakrilat<\/td>\n 97-86-9<\/td>\n<\/tr>\n \n EHMA Monomer<\/a><\/span><\/td>\n 2-Etilheksil metakrilat<\/td>\n 688-84-6<\/td>\n<\/tr>\n \n EGDMP Monomer<\/a><\/span><\/td>\n Etilen glikol Bis(3-merkaptopropiyonat)<\/td>\n 22504-50-3<\/td>\n<\/tr>\n \n EEMA Monomer<\/a><\/span><\/td>\n 2-etoksietil 2-metilprop-2-enoat<\/td>\n 2370-63-0<\/td>\n<\/tr>\n \n DMAEMA Monomer<\/a><\/span><\/td>\n N,M-Dimetilaminoetil metakrilat<\/td>\n 2867-47-2<\/td>\n<\/tr>\n \n DEAM Monomer<\/a><\/span><\/td>\n Dietilaminoetil metakrilat<\/td>\n 105-16-8<\/td>\n<\/tr>\n \n CHMA Monomer<\/a><\/span><\/td>\n Sikloheksil metakrilat<\/td>\n 101-43-9<\/td>\n<\/tr>\n \n BZMA Monomer<\/a><\/span><\/td>\n Benzil metakrilat<\/td>\n 2495-37-6<\/td>\n<\/tr>\n \n BDDMP Monomer<\/a><\/span><\/td>\n 1,4-B\u00fctandiol Di(3-merkaptopropiyonat)<\/td>\n 92140-97-1<\/td>\n<\/tr>\n \n BDDMA Monomer<\/a><\/span><\/td>\n 1,4-B\u00fctandioldimetakrilat<\/td>\n 2082-81-7<\/td>\n<\/tr>\n \n AMA Monomer<\/a><\/span><\/td>\n Alil metakrilat<\/td>\n 96-05-9<\/td>\n<\/tr>\n \n AAEM Monomer<\/a><\/span><\/td>\n Asetilasetoksietil metakrilat<\/td>\n 21282-97-3<\/td>\n<\/tr>\n \n Akrilatlar Monomer<\/strong><\/td>\n <\/td>\n<\/tr>\n \n IBA Monomer<\/a><\/span><\/td>\n \u0130zob\u00fctil akrilat<\/td>\n 106-63-8<\/td>\n<\/tr>\n \n EMA Monomer<\/a><\/span><\/td>\n Etil metakrilat<\/td>\n 97-63-2<\/td>\n<\/tr>\n \n DMAEA Monomer<\/a><\/span><\/td>\n Dimetilaminoetil akrilat<\/td>\n 2439-35-2<\/td>\n<\/tr>\n \n DEAEA Monomer<\/a><\/span><\/td>\n 2-(dietilamino)etil prop-2-enoat<\/td>\n 2426-54-2<\/td>\n<\/tr>\n \n CHA Monomer<\/a><\/span><\/td>\n sikloheksil prop-2-enoat<\/td>\n 3066-71-5<\/td>\n<\/tr>\n \n BZA Monomer<\/a><\/span><\/td>\n benzil prop-2-enoat<\/td>\n 2495-35-4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n