Epoxigyanta \u00e9s politiol-monomer reakci\u00f3mechanizmusa?<\/p>\n
Az epoxigyant\u00e1k \u00e9s a politiolok k\u00f6z\u00f6tti reakci\u00f3mechanizmus els\u0151sorban a tiolcsoport \u00e9s az epoxicsoport k\u00f6z\u00f6tti k\u00f6lcs\u00f6nhat\u00e1son alapul. A k\u00f6vetkez\u0151 a r\u00e9szletes reakci\u00f3mechanizmus:
\nA reakci\u00f3 beind\u00edt\u00e1sa:<\/p>\n
A politiolok \u00e9s az epoxigyant\u00e1k k\u00f6z\u00f6tti reakci\u00f3 sor\u00e1n a tercier amin megosztatlan elektronp\u00e1rja el\u0151sz\u00f6r a tiolcsoport akt\u00edv hidrog\u00e9nj\u00e9t fogja meg, ami anionos t\u00f6lt\u00e9st eredm\u00e9nyez a k\u00e9natomon.<\/p>\n
<\/p>\n
Nukleofil add\u00edci\u00f3s reakci\u00f3:<\/p>\n
A negat\u00edv t\u00f6lt\u00e9s\u0171 k\u00e9natom reakci\u00f3ba l\u00e9p az epoxigyanta alfa-sz\u00e9natomj\u00e1val egy nukleofil add\u00edci\u00f3s reakci\u00f3nak nevezett folyamat sor\u00e1n.<\/p>\n
Ez a reakci\u00f3 az epoxigyanta h\u00e1rmas epoxicsoportj\u00e1nak megny\u00edl\u00e1s\u00e1t eredm\u00e9nyezi k\u00e9t hidroxilcsoport kialakul\u00e1s\u00e1val.<\/p>\n
<\/p>\n
Tiol-oxig\u00e9n k\u00f6t\u00e9sek j\u00f6nnek l\u00e9tre:<\/p>\n
A tiolcsoportban l\u00e9v\u0151 k\u00e9natom nukleofil add\u00edci\u00f3s reakci\u00f3ban reag\u00e1l az epoxicsoport oxig\u00e9natomj\u00e1val, \u00e9s k\u00e9n-oxig\u00e9n k\u00f6t\u00e9st hoz l\u00e9tre, ami a kem\u00e9nyed\u00e9si folyamat kulcsfontoss\u00e1g\u00fa l\u00e9p\u00e9se.<\/p>\n
<\/p>\n
T\u00e9rh\u00e1l\u00f3s szerkezet kialakul\u00e1sa:<\/p>\n
Az epoxigyant\u00e1ban k\u00e9pz\u0151d\u00f6tt k\u00e9t hidroxilcsoport tov\u00e1bb reag\u00e1l a politiolban l\u00e9v\u0151 merkapt\u00e1ncsoportokkal, hogy t\u00e9rh\u00e1l\u00f3s szerkezetet k\u00e9pezzen.<\/p>\n
Ez a t\u00e9rh\u00e1l\u00f3s szerkezet a politiolt az epoxigyant\u00e1hoz k\u00f6ti.<\/p>\n
<\/p>\n
Gy\u00f3gy\u00edt\u00e1si eredm\u00e9nyek:<\/p>\n
A fenti reakci\u00f3 r\u00e9v\u00e9n a politiol \u00e9s az epoxigyanta egy szil\u00e1rd anyagot alkot, amely ellen\u00e1ll a kop\u00e1snak, a korr\u00f3zi\u00f3nak \u00e9s a magas h\u0151m\u00e9rs\u00e9kletnek.<\/p>\n
<\/p>\n
Reakci\u00f3jellemz\u0151k:<\/p>\n
A poliszulfiddal vulkaniz\u00e1lt epoxi kem\u00e9nyed\u00e9si ideje \u00e1ltal\u00e1ban n\u00e9h\u00e1ny perc \u00e9s n\u00e9h\u00e1ny \u00f3ra k\u00f6z\u00f6tt van, \u00e9s nem ig\u00e9nyel magas h\u0151m\u00e9rs\u00e9kleten vagy nagy nyom\u00e1son t\u00f6rt\u00e9n\u0151 kezel\u00e9st, ami miatt sz\u00e9les k\u00f6rben haszn\u00e1lj\u00e1k az ipari termel\u00e9sben.<\/p>\n
A kikem\u00e9ny\u00edtett anyag kiv\u00e1l\u00f3 fizikai \u00e9s k\u00e9miai tulajdons\u00e1gokkal rendelkezik, mint p\u00e9ld\u00e1ul kop\u00e1s\u00e1ll\u00f3s\u00e1g, korr\u00f3zi\u00f3\u00e1ll\u00f3s\u00e1g, j\u00f3 szigetel\u00e9s \u00e9s egy\u00e9b jellemz\u0151k.<\/p>\n
\u00d6sszefoglalva, az epoxigyanta \u00e9s a politiol reakci\u00f3mechanizmusa egy \u00f6sszetett, de rendk\u00edv\u00fcl hat\u00e9kony folyamat, amely a k\u00e9t anyag szoros k\u00f6t\u00e9s\u00e9t \u00e9s kikem\u00e9nyed\u00e9s\u00e9t nukleofil add\u00edci\u00f3s reakci\u00f3val \u00e9s t\u00e9rh\u00e1l\u00f3s szerkezet kialakul\u00e1s\u00e1val val\u00f3s\u00edtja meg.<\/p>\n
<\/p>\n
A legelterjedtebb UV-formul\u00e1ci\u00f3k \u00fagy k\u00e9sz\u00fclnek, hogy el\u0151sz\u00f6r a f\u0151v\u00e1zat v\u00e1lasztj\u00e1k ki, majd a reakt\u00edv monomercsomagot a hordoz\u00f3hoz, a kik\u00f6t\u00e9si m\u00f3dhoz \u00e9s a felhaszn\u00e1l\u00e1s sor\u00e1n fell\u00e9p\u0151 ig\u00e9nybev\u00e9telekhez igaz\u00edtj\u00e1k. Ez \u00e1ltal\u00e1ban stabilabb eredm\u00e9nyt hoz, mint ha puszt\u00e1n a viszkozit\u00e1s vagy az \u00e1r alapj\u00e1n v\u00e1lasztan\u00e1nk meg az anyagokat.<\/p>\n
Egy UV-monomer vagy gyanta megoldhat minden formul\u00e1ci\u00f3s probl\u00e9m\u00e1t?<\/strong> Mi\u00e9rt kell a monomereket az oligomerekkel egy\u00fctt vizsg\u00e1lni?<\/strong> <\/p>\n <\/p>\n Gyors v\u00e1lasz:<\/strong> A gyakorlati UV-k\u00e9sz\u00edtm\u00e9nyek \u00f6ssze\u00e1ll\u00edt\u00e1s\u00e1n\u00e1l a gyanta \u00e9s a monomer kiv\u00e1laszt\u00e1sa a v\u00e9gfelhaszn\u00e1l\u00e1si tulajdons\u00e1gokkal kezd\u0151dik, majd ezek k\u00f6r\u00e9 hangolja a viszkozit\u00e1st \u00e9s a k\u00f6t\u00e9si reakci\u00f3t. A v\u00e1s\u00e1rl\u00f3k \u00e1ltal\u00e1ban n\u00e9h\u00e1ny \u00f6sszeill\u0151 csomagot sz\u0171k\u00edtenek le, nem egyetlen csodael\u0151anyagot.<\/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
\u00c1ltal\u00e1ban nem. A kereskedelmileg er\u0151s formul\u00e1k att\u00f3l f\u00fcggenek, hogyan m\u0171k\u00f6dik egy\u00fctt t\u00f6bb komponens a kikem\u00e9nyed\u00e9s, tapad\u00e1s, foly\u00e1s \u00e9s tart\u00f3ss\u00e1g kiegyens\u00falyoz\u00e1s\u00e1ra.<\/p>\n
Mivel a monomerek megv\u00e1ltoztathatj\u00e1k a viszkozit\u00e1st, a k\u00f6t\u00e9si sebess\u00e9get, a zsugorod\u00e1st \u00e9s az aljzat viselked\u00e9s\u00e9t annyira, hogy befoly\u00e1solj\u00e1k ugyanazon alapgyanta v\u00e9gs\u0151 rangsorol\u00e1s\u00e1t.<\/p>\nL\u00e9pjen kapcsolatba vel\u00fcnk most!<\/b><\/strong><\/h2>\n
Ha sz\u00fcks\u00e9ge van Price-ra, k\u00e9rj\u00fck, t\u00f6ltse ki el\u00e9rhet\u0151s\u00e9g\u00e9t az al\u00e1bbi \u0171rlapon, \u00e1ltal\u00e1ban 24 \u00f3r\u00e1n bel\u00fcl felvessz\u00fck \u00d6nnel a kapcsolatot. \u00d6n is k\u00fcldhet nekem e-mailt info@longchangchemical.com<\/a><\/span> munkaid\u0151ben ( 8:30-18:00 UTC+8 H.-Szombat ) vagy haszn\u00e1lja a weboldal \u00e9l\u0151 chatj\u00e9t, hogy azonnali v\u00e1laszt kapjon.<\/b><\/strong><\/h4>\n
\n\n\n
\n Politiol\/Polimerkapt\u00e1n<\/strong><\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n DMES monomer<\/a><\/span><\/td>\n Bis(2-merkaptoetil)szulfid<\/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-MERKAPTOPROPION\u00c1T)<\/td>\n 7575-23-7<\/td>\n<\/tr>\n \n PM839 Monomer<\/a><\/span><\/td>\n Polioxi(metil-1,2-et\u00e1ndiil)<\/td>\n 72244-98-5<\/td>\n<\/tr>\n \n Monofunkci\u00f3s monomer<\/strong><\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n HEMA monomer<\/a><\/span><\/td>\n 2-hidroxietil-metakril\u00e1t<\/td>\n 868-77-9<\/td>\n<\/tr>\n \n HPMA monomer<\/a><\/span><\/td>\n 2-hidroxipropil-metakril\u00e1t<\/td>\n 27813-02-1<\/td>\n<\/tr>\n \n THFA monomer<\/a><\/span><\/td>\n Tetrahidrofurfuril-akril\u00e1t<\/td>\n 2399-48-6<\/td>\n<\/tr>\n \n HDCPA monomer<\/a><\/span><\/td>\n Hidrog\u00e9nezett diciklopentenil-akril\u00e1t<\/td>\n 79637-74-4<\/td>\n<\/tr>\n \n DCPMA monomer<\/a><\/span><\/td>\n Dihidrodiciklopentadienil-metakril\u00e1t<\/td>\n 30798-39-1<\/td>\n<\/tr>\n \n DCPA monomer<\/a><\/span><\/td>\n Dihidrodiciklopentadienil-akril\u00e1t<\/td>\n 12542-30-2<\/td>\n<\/tr>\n \n DCPEMA monomer<\/a><\/span><\/td>\n Diciklopenteniloxi-etil-metakril\u00e1t<\/td>\n 68586-19-6<\/td>\n<\/tr>\n \n DCPEOA monomer<\/a><\/span><\/td>\n Diciklopenteniloxi-etil-akril\u00e1t<\/td>\n 65983-31-5<\/td>\n<\/tr>\n \n NP-4EA monomer<\/a><\/span><\/td>\n (4) etoxil\u00e1lt nonylfenol<\/td>\n 50974-47-5<\/td>\n<\/tr>\n \n LA Monomer<\/td>\n Lauril-akril\u00e1t \/ dodecil-akril\u00e1t<\/td>\n 2156-97-0<\/td>\n<\/tr>\n \n THFMA monomer<\/a><\/span><\/td>\n Tetrahidrofurfuril-metakril\u00e1t<\/td>\n 2455-24-5<\/td>\n<\/tr>\n \n PHEA monomer<\/span><\/a><\/td>\n 2-FENOXI-ETIL-AKRIL\u00c1T<\/td>\n 48145-04-6<\/td>\n<\/tr>\n \n LMA monomer<\/a><\/span><\/td>\n Lauril-metakril\u00e1t<\/td>\n 142-90-5<\/td>\n<\/tr>\n \n IDA monomer<\/a><\/span><\/td>\n Izodecil-akril\u00e1t<\/td>\n 1330-61-6<\/td>\n<\/tr>\n \n IBOMA monomer<\/a><\/span><\/td>\n Izobornyl-metakril\u00e1t<\/td>\n 7534-94-3<\/td>\n<\/tr>\n \n IBOA monomer<\/a><\/span><\/td>\n Izobornyil-akril\u00e1t<\/td>\n 5888-33-5<\/td>\n<\/tr>\n \n EOEOEA Monomer<\/a><\/span><\/td>\n 2-(2-etoxietoxi-etoxi)etil-akril\u00e1t<\/td>\n 7328-17-8<\/td>\n<\/tr>\n \n Multifunkcion\u00e1lis monomer<\/strong><\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n DPHA monomer<\/a><\/span><\/td>\n Dipentaeritritol-hexakril\u00e1t<\/td>\n 29570-58-9<\/td>\n<\/tr>\n \n DI-TMPTA monomer<\/a><\/span><\/td>\n DI(TRIMETILOLPROPAN)TETRAAKRIL\u00c1T<\/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-akrilil-morfolin<\/td>\n 5117-12-4<\/td>\n<\/tr>\n \n Difunkci\u00f3s monomer<\/strong><\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n PEGDMA monomer<\/a><\/span><\/td>\n Poli(etil\u00e9nglikol)-dimetakril\u00e1t<\/td>\n 25852-47-5<\/td>\n<\/tr>\n \n TPGDA monomer<\/a><\/span><\/td>\n Tripropil\u00e9n-glikol-diacril\u00e1t<\/td>\n 42978-66-5<\/td>\n<\/tr>\n \n TEGDMA monomer<\/a><\/span><\/td>\n Trietil\u00e9nglikol-dimetakril\u00e1t<\/td>\n 109-16-0<\/td>\n<\/tr>\n \n PO2-NPGDA monomer<\/span><\/a><\/td>\n Propoxil\u00e1t neopentylenglikol-diacril\u00e1t<\/td>\n 84170-74-1<\/td>\n<\/tr>\n \n PEGDA monomer<\/a><\/span><\/td>\n Polietil\u00e9n-glikol-diacril\u00e1t<\/td>\n 26570-48-9<\/td>\n<\/tr>\n \n PDDA monomer<\/a><\/span><\/td>\n Ftal\u00e1t dietil\u00e9nglikol-diacril\u00e1t<\/td>\n <\/td>\n<\/tr>\n \n NPGDA monomer<\/a><\/span><\/td>\n Neopentil-glikol-diacril\u00e1t<\/td>\n 2223-82-7<\/td>\n<\/tr>\n \n HDDA monomer<\/a><\/span><\/td>\n Hexametil\u00e9n-diacril\u00e1t<\/td>\n 13048-33-4<\/td>\n<\/tr>\n \n EO4-BPADA monomer<\/span><\/a><\/td>\n ETOXIL\u00c1LT (4) BISZFENOL A-DIACRIL\u00c1T<\/td>\n 64401-02-1<\/td>\n<\/tr>\n \n EO10-BPADA Monomer<\/a><\/span><\/td>\n ETOXIL\u00c1LT (10) BISZFENOL A-DIACRIL\u00c1T<\/td>\n 64401-02-1<\/td>\n<\/tr>\n \n EGDMA monomer<\/a><\/span><\/td>\n Etil\u00e9nglikol-dimetakril\u00e1t<\/td>\n 97-90-5<\/td>\n<\/tr>\n \n DPGDA monomer<\/a><\/span><\/td>\n Dipropil\u00e9n-glikol-dieno\u00e1t<\/td>\n 57472-68-1<\/td>\n<\/tr>\n \n Bis-GMA monomer<\/a><\/span><\/td>\n Biszfenol A glicidil-metakril\u00e1t<\/td>\n 1565-94-2<\/td>\n<\/tr>\n \n Trifunkcion\u00e1lis monomer<\/strong><\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n TMPTMA monomer<\/a><\/span><\/td>\n Trimetilolpropan-trimetakril\u00e1t<\/td>\n 3290-92-4<\/td>\n<\/tr>\n \n TMPTA monomer<\/a><\/span><\/td>\n Trimetilolpropan-trikril\u00e1t<\/td>\n 15625-89-5<\/td>\n<\/tr>\n \n PETA monomer<\/a><\/span><\/td>\n Pentaeritritol-trikril\u00e1t<\/td>\n 3524-68-3<\/td>\n<\/tr>\n \n GPTA ( G3POTA ) Monomer<\/a><\/span><\/td>\n GLICERIL-PROPOXI-TRIAKRIL\u00c1T<\/td>\n 52408-84-1<\/td>\n<\/tr>\n \n EO3-TMPTA monomer<\/a><\/span><\/td>\n Etoxil\u00e1lt trimetilolpropan-trikril\u00e1t<\/td>\n 28961-43-5<\/td>\n<\/tr>\n \n Fotoreziszt monomer<\/strong><\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n IPAMA monomer<\/a><\/span><\/td>\n 2-izopropil-2-adamantil-metakril\u00e1t<\/td>\n 297156-50-4<\/td>\n<\/tr>\n \n ECPMA monomer<\/a><\/span><\/td>\n 1-etil-ciklopentil-metakril\u00e1t<\/td>\n 266308-58-1<\/td>\n<\/tr>\n \n ADAMA monomer<\/a><\/span><\/td>\n 1-Adamantil-metakril\u00e1t<\/td>\n 16887-36-8<\/td>\n<\/tr>\n \n Metakril\u00e1t monomer<\/strong><\/td>\n <\/td>\n <\/td>\n<\/tr>\n \n TBAEMA monomer<\/a><\/span><\/td>\n 2-(terc-butilamino)etil-metakril\u00e1t<\/td>\n 3775-90-4<\/td>\n<\/tr>\n \n NBMA monomer<\/a><\/span><\/td>\n n-butil-metakril\u00e1t<\/td>\n 97-88-1<\/td>\n<\/tr>\n \n MEMA monomer<\/a><\/span><\/td>\n 2-metoxietil-metakril\u00e1t<\/td>\n 6976-93-8<\/td>\n<\/tr>\n \n i-BMA monomer<\/a><\/span><\/td>\n Izobutil-metakril\u00e1t<\/td>\n 97-86-9<\/td>\n<\/tr>\n \n EHMA monomer<\/a><\/span><\/td>\n 2-etilhexil-metakril\u00e1t<\/td>\n 688-84-6<\/td>\n<\/tr>\n \n EGDMP monomer<\/a><\/span><\/td>\n Etil\u00e9nglikol bisz(3-merkaptopropion\u00e1t)<\/td>\n 22504-50-3<\/td>\n<\/tr>\n \n EEMA monomer<\/a><\/span><\/td>\n 2-etoxietil-2-metilprop-2-eno\u00e1t<\/td>\n 2370-63-0<\/td>\n<\/tr>\n \n DMAEMA monomer<\/a><\/span><\/td>\n N,M-dimetil-aminoetil-metakril\u00e1t<\/td>\n 2867-47-2<\/td>\n<\/tr>\n \n DEAM monomer<\/a><\/span><\/td>\n Dietilaminoetil-metakril\u00e1t<\/td>\n 105-16-8<\/td>\n<\/tr>\n \n CHMA monomer<\/a><\/span><\/td>\n Ciklohexil-metakril\u00e1t<\/td>\n 101-43-9<\/td>\n<\/tr>\n \n BZMA monomer<\/a><\/span><\/td>\n Benzil-metakril\u00e1t<\/td>\n 2495-37-6<\/td>\n<\/tr>\n \n BDDMP monomer<\/a><\/span><\/td>\n 1,4-But\u00e1ndiol Di(3-merkaptopropion\u00e1t)<\/td>\n 92140-97-1<\/td>\n<\/tr>\n \n BDDMA monomer<\/a><\/span><\/td>\n 1,4-but\u00e1ndioldi-oldimetakril\u00e1t<\/td>\n 2082-81-7<\/td>\n<\/tr>\n \n AMA monomer<\/a><\/span><\/td>\n Alil-metakril\u00e1t<\/td>\n 96-05-9<\/td>\n<\/tr>\n \n AAEM monomer<\/a><\/span><\/td>\n Acetilacetoxi-etil-metakril\u00e1t<\/td>\n 21282-97-3<\/td>\n<\/tr>\n \n Akril\u00e1t monomer<\/strong><\/td>\n <\/td>\n<\/tr>\n \n IBA monomer<\/a><\/span><\/td>\n Izobutil-akril\u00e1t<\/td>\n 106-63-8<\/td>\n<\/tr>\n \n EMA monomer<\/a><\/span><\/td>\n Etil-metakril\u00e1t<\/td>\n 97-63-2<\/td>\n<\/tr>\n \n DMAEA monomer<\/a><\/span><\/td>\n Dimetil-aminoetil-akril\u00e1t<\/td>\n 2439-35-2<\/td>\n<\/tr>\n \n DEAEA monomer<\/a><\/span><\/td>\n 2-(dietilamino)etil-prop-2-eno\u00e1t<\/td>\n 2426-54-2<\/td>\n<\/tr>\n \n CHA monomer<\/a><\/span><\/td>\n ciklohexil prop-2-eno\u00e1t<\/td>\n 3066-71-5<\/td>\n<\/tr>\n \n BZA monomer<\/a><\/span><\/td>\n benzil-prop-2-eno\u00e1t<\/td>\n 2495-35-4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n