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Cov yam ntxwv ntawm UV curable resin

Nws yog tsim los ntawm monomer thiab oligomer thiab muaj cov pab pawg ua haujlwm.Nws tuaj yeem pib cov tshuaj tiv thaiv polymerization los ntawm lub teeb pib hauv qab UV irradiation los tsim cov zaj duab xis insoluble.Lub teeb kho resin, tseem hu ua photosensitive resin, yog oligomer uas tuaj yeem hloov pauv lub cev thiab tshuaj sai sai hauv lub sijhawm luv luv tom qab raug irradiated los ntawm lub teeb, thiab tom qab ntawd crosslink thiab kho.UV curable resin yog ib hom photosensitive resin nrog qis tus txheeb ze molecular hnyav.Nws muaj cov pab pawg reactive uas tuaj yeem ua UV kho tau, xws li unsaturated ob daim ntawv cog lus lossis epoxy pawg.UV curable resin yog matrix resin ntawm UV curable txheej.Nws yog compounded nrog photoinitiator, nquag diluent thiab ntau yam additives los tsim UV curable txheej.

UV curable resin yog tsim los ntawm monomer thiab oligomer.Nws muaj cov pab pawg ua haujlwm nquag thiab tuaj yeem pib cov tshuaj tiv thaiv polymerization los ntawm lub teeb pib hauv qab UV irradiation los tsim cov zaj duab xis insoluble.Bisphenol A epoxy acrylate muaj cov yam ntxwv ntawm kev kho kom ceev ceev, cov tshuaj hnyav hnyav thiab siab hardness.Polyurethane acrylate muaj cov yam ntxwv ntawm kev yooj yim thiab hnav tsis kam.Lub teeb kho cov khoom sib xyaw ua ke yog ib qho khoom siv uas feem ntau siv thiab kho cov khoom hauv Department of Stomatology.Vim nws cov xim zoo nkauj thiab qee lub zog compressive, nws plays lub luag haujlwm tseem ceeb hauv kev siv tshuaj kho mob.Peb tau ua tiav cov txiaj ntsig zoo hauv kev kho ntau yam tsis xws luag thiab kab noj hniav ntawm cov hniav anterior.

Kev sib piv ntawm kev kho qhov ncauj

Rau cov cheeb tsam loj hauv cov kab mob sib sib zog nqus, ntau txoj kev kho dua tshiab muaj lawv tus kheej qhov zoo thiab qhov tsis zoo: amalgam muaj qhov nyuaj siab thiab muaj zog compression tsis kam, tab sis tsis muaj adhesion (tsis muaj ob txoj kev traction), tsuas yog tso siab rau txhua yam embedment, muaj creep, thiab muaj. qee yam corrosiveness thiab toxicity.Kev soj ntsuam ntawm cov tshuaj yaj yeeb qhia tau hais tias Mercury, nyiaj, tooj liab thiab zinc yog yaj [2];iav ionomer cement muaj adhesion zoo, tab sis nws muaj qhov tsis zoo hardness, tsis hnav-resistant thiab yooj yim hloov xim;Inlay (xws li hlau, yas thiab plooj (porcelain) kho dua tshiab, lub rooj zaum tom qab lub rooj zaum tseem ceeb kho dua tshiab, lub plhaub plhaub hlau thiab cov plooj (porcelain fused to metal crown restoration) tau siv dav hauv kev kho mob, tab sis kev npaj cov hniav muaj kev hnav loj, cov txheej txheem nyuaj thiab tus nqi siab.

UV curable composite resin yog dav siv hauv tsev kho mob.Nws muaj kev ua tau zoo, xim zoo nkauj thiab kav ntev, kev ua haujlwm yooj yim, tus nqi qis thiab nrov heev.Tab sis photosensitive resin muaj phototropism.Txoj kev ua tiav ncaj qha rau hauv lub qhov ncauj yog saws, thiab lub teeb ci los ntawm ib qho kev taw qhia, uas yog khi ua rau cov resin polymerization nyob rau hauv qab thiab phab ntsa ntawm lub qhov tsua tsis zoo li qhov chaw, ua rau tawg ntawm qhov sib txuas. ntawm cov hniav hauv qab [3].Qee qhov kev tshawb fawb tau pom tias qhov kev kho kom zoo ntawm cov khoom sib xyaw tom qab lub teeb kho yog 43% ~ 64% [3].Qhov tseeb, cov fillers no tsuas yog ua si 1/2 ~ 2/3 ntawm lawv cov khoom siv.Yuav kom daws tau qhov teeb meem no, txheej txheej filling (2 hli rau txhua txheej) feem ntau yog siv rau lub teeb kho hauv tsev kho mob, tab sis txhua txheej ntawm txoj kev no tau raug rau qhov chaw ntub dej hauv qhov ncauj, yog li muaj pawg n- 1 "txheej txheem" ​​nyob rau hauv lub filling uas yog ib txheej.Tam sim no nws yog dav siv nyob rau hauv coatings thiab inks.

kho tau resin

 


Post lub sij hawm: Lub Xya hli ntuj-19-2022