Cov Oligomers yog cov molecules uas muaj ob peb lub units rov ua dua, thiab lawv yog cov khoom tseem ceeb ntawm UV curable inks. UV curable inks yog cov inks uas tuaj yeem qhuav thiab kho tam sim ntawd los ntawm kev raug rau lub teeb ultraviolet (UV), uas ua rau lawv zoo tagnrho rau kev luam ntawv ceev ceev thiab txheej txheem. Oligomers ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab cov khoom thiab kev ua tau zoo ntawm UV curable inks, xws li viscosity, adhesion, flexibility, durability, thiab xim.
Muaj peb pawg tseem ceeb ntawm UV kho tau oligomers, uas yog epoxy acrylates, polyester acrylates, thiab urethane acrylates. Txhua pawg muaj nws tus kheej cov yam ntxwv thiab daim ntawv thov, nyob ntawm hom substrate, txoj kev kho, thiab qhov zoo ntawm cov khoom kawg.
Epoxy acrylates yog cov oligomers uas muaj epoxy pawg nyob rau hauv lawv lub pob txha caj qaum, thiab acrylate pawg nyob rau ntawm lawv qhov kawg. Lawv paub txog lawv cov reactivity siab, viscosity qis, thiab zoo tshuaj lom neeg tsis kam. Txawm li cas los xij, lawv kuj muaj qee qhov tsis zoo, xws li kev ywj pheej tsis zoo, kev nplaum qis, thiab kev nyiam daj. Epoxy acrylates yog qhov tsim nyog rau kev luam ntawv rau ntawm cov khoom siv tawv, xws li hlau, iav, thiab yas, thiab rau cov ntawv thov uas xav tau siab gloss thiab hardness.
Polyester acrylates yog cov oligomers uas muaj cov pawg polyester hauv lawv lub nraub qaum, thiab cov pawg acrylate ntawm lawv qhov kawg. Lawv paub txog lawv cov tshuaj tiv thaiv nruab nrab, qis shrinkage, thiab yooj ywm zoo. Txawm li cas los xij, lawv kuj muaj qee qhov tsis zoo, xws li viscosity siab, tsis tshua muaj tshuaj lom neeg, thiab tsw ntxhiab. Polyester acrylates yog qhov tsim nyog rau kev luam ntawv ntawm cov khoom siv yooj ywm, xws li ntawv, zaj duab xis, thiab ntaub, thiab rau cov ntawv thov uas xav tau kev nplaum zoo thiab elasticity.
Urethane acrylates yog cov oligomers uas muaj cov pab pawg urethane hauv lawv lub pob txha caj qaum, thiab cov pab pawg acrylate ntawm lawv qhov kawg. Lawv paub txog lawv cov tshuaj tiv thaiv qis, viscosity siab, thiab kev ywj pheej zoo heev. Txawm li cas los xij, lawv kuj muaj qee qhov tsis zoo, xws li tus nqi siab, kev tiv thaiv oxygen siab, thiab kev kho qeeb. Urethane acrylates yog qhov tsim nyog rau kev luam ntawv ntawm ntau yam substrates, xws li ntoo, tawv, thiab roj hmab, thiab rau cov ntawv thov uas xav tau kev ruaj khov thiab kev tiv thaiv kev sib txhuam siab.
Xaus lus, oligomers yog qhov tseem ceeb rau kev tsim thiab kev ua haujlwm ntawm UV curable inks, thiab lawv tuaj yeem muab faib ua peb pawg tseem ceeb, uas yog epoxy acrylates, polyester acrylates, thiab urethane acrylates. Txhua pawg muaj nws tus kheej qhov zoo thiab qhov tsis zoo, nyob ntawm daim ntawv thov thiab lub substrate. Kev tsim cov oligomers thiab UV ink yog ib qho txheej txheem txuas ntxiv mus, thiab cov hom oligomers tshiab thiab cov txheej txheem kho tau raug tshawb nrhiav kom tau raws li qhov xav tau ntawm kev lag luam ink.
Lub sijhawm tshaj tawm: Lub Ib Hlis-04-2024
