Glycidyl Methacrylate (GMA) yog monomer muaj ob qho tib si acrylate ob daim ntawv cog lus thiab epoxy pawg. Acrylate ob daim ntawv cog lus muaj qhov ua haujlwm siab, tuaj yeem ua rau tus kheej-polymerization cov tshuaj tiv thaiv, thiab tuaj yeem ua copolymerized nrog ntau lwm cov monomers; epoxy pawg tuaj yeem hnov ​​​​mob nrog hydroxyl, amino, carboxyl lossis acid anhydride, qhia ntau pab pawg ua haujlwm, yog li nqa ntau cov haujlwm rau cov khoom. Yog li ntawd, GMA muaj ntau yam kev siv nyob rau hauv cov organic synthesis, polymer synthesis, polymer modification, composite cov ntaub ntawv, ultraviolet curing cov ntaub ntawv, coatings, adhesives, tawv, tshuaj fiber ntau papermaking, printing thiab dyeing, thiab ntau lwm yam teb.

Daim ntawv thov ntawm GMA hauv hmoov txheej

Acrylic hmoov txheej yog ib pawg loj ntawm cov hmoov txheej, uas tuaj yeem muab faib ua hydroxyl acrylic resins, carboxyl acrylic resins, glycidyl acrylic resins, thiab amido acrylic resins raws li cov neeg ua haujlwm sib txawv siv. Ntawm lawv, glycidyl acrylic resin yog cov hmoov txheej siv ntau tshaj plaws. Nws tuaj yeem tsim rau hauv cov yeeb yaj kiab nrog cov tshuaj tua kab mob xws li polyhydric hydroxy acids, polyamines, polyols, polyhydroxy resins, thiab hydroxy polyester resins.

Methyl methacrylate, glycidyl methacrylate, butyl acrylate, styrene feem ntau yog siv rau dawb radical polymerization los ua ke GMA hom acrylic resin, thiab dodecyl dibasic acid yog siv los ua tus neeg sawv cev kho. Acrylic hmoov txheej npaj muaj kev ua tau zoo. Cov txheej txheem synthesis tuaj yeem siv benzoyl peroxide (BPO) thiab azobisisobutyronitrile (AIBN) los yog lawv cov khoom sib xyaw ua cov pib. Tus nqi ntawm GMA muaj kev cuam tshuam zoo rau kev ua haujlwm ntawm cov yeeb yaj kiab txheej. Yog tias tus nqi tsawg dhau, qhov sib txawv ntawm qhov sib txawv ntawm cov resin yog tsawg, cov ntsiab lus curing crosslinking muaj tsawg, qhov sib txawv ntawm qhov sib txawv ntawm cov yeeb yaj kiab txheej tsis txaus, thiab qhov cuam tshuam ntawm cov yeeb yaj kiab txheej yog qhov tsis zoo.

Kev siv GMA hauv kev hloov pauv polymer

GMA tuaj yeem raug grafted rau hauv cov polymer vim muaj cov acrylate ob daim ntawv cog lus nrog kev ua haujlwm siab dua, thiab epoxy pawg muaj nyob rau hauv GMA tuaj yeem cuam tshuam nrog ntau yam ntawm lwm pab pawg ua haujlwm los tsim cov khoom siv polymer. GMA tuaj yeem raug grafted los hloov polyolefin los ntawm txoj kev xws li tshuaj grafting, yaj grafting, khoom theem grafting, hluav taws xob grafting, thiab lwm yam., thiab nws kuj muaj peev xwm tsim functionalized copolymer nrog ethylene, acrylate, thiab lwm yam. toughen engineering plastics los yog ua compatibilizers los txhim kho kev sib raug zoo ntawm kev sib xyaw tshuab.

Tus thawj coj nquag siv rau kev hloov pauv ntawm polyolefin los ntawm GMA yog dicumyl peroxide (DCP). Qee tus neeg kuj siv benzoyl peroxide (BPO), acrylamide (AM), 2,5-di-tert-butyl peroxide. Initiators xws li oxy-2,5-dimethyl-3-hexyne (LPO) los yog 1,3-di-tert-butyl cumene peroxide. Ntawm lawv, AM muaj qhov cuam tshuam tseem ceeb ntawm kev txo qis ntawm polypropylene degradation thaum siv los ua tus pib. Kev grafting ntawm GMA ntawm polyolefin yuav ua rau kev hloov pauv ntawm polyolefin qauv, uas yuav ua rau kev hloov ntawm polyolefin cov khoom nto, rheological zog, thermal zog thiab txhua yam khoom. GMA graft-hloov polyolefin tsub kom lub polarity ntawm cov saw molecular thiab nyob rau tib lub sij hawm nce polarity saum npoo. Yog li ntawd, qhov kev sib cuag ntawm lub kaum sab xis yuav txo qis thaum grafting tus nqi nce. Vim tias qhov kev hloov pauv ntawm cov qauv polymer tom qab hloov kho GMA, nws tseem yuav cuam tshuam rau nws cov crystalline thiab txhua yam khoom.

Daim ntawv thov ntawm GMA nyob rau hauv lub synthesis ntawm UV curable resin

GMA tuaj yeem siv rau hauv kev sib txuas ntawm UV curable resins los ntawm ntau txoj kev hluavtaws. Ib txoj hauv kev yog thawj zaug tau txais cov prepolymer uas muaj carboxyl lossis amino pawg ntawm sab saw los ntawm radical polymerization lossis condensation polymerization, thiab tom qab ntawd siv GMA los cuam tshuam nrog cov pab pawg ua haujlwm no los qhia cov pab pawg photosensitive kom tau txais cov khoom siv photocurable. Hauv thawj copolymerization, cov comonomers sib txawv tuaj yeem siv tau kom tau cov polymers nrog cov khoom sib txawv kawg. Feng Zongcai et al. siv 1,2,4-trimellitic anhydride thiab ethylene glycol los ua kom muaj kev sib xyaw ua ke ntawm cov polymers, thiab tom qab ntawd qhia cov pab pawg photosensitive los ntawm GMA kom thaum kawg tau txais ib qho photocurable resin nrog zoo alkali solubility. Lu Tingfeng thiab lwm tus siv poly-1,4-butanediol adipate, toluene diisocyanate, dimethylolpropionic acid thiab hydroxyethyl acrylate los ua ntej synthesize ib prepolymer nrog photosensitive active ob daim ntawv cog lus, thiab ces qhia nws los ntawm GMA Ntau lub teeb-kho ob daim ntawv cog lus neutralized los ntawm triethylamine rau tau cov dej ua los ntawm polyurethane acrylate emulsion.