Glycidyl Methacrylate (GMA) ni monomer ifite imigozi ibiri ya acrylate na epoxy. Imigozi ibiri ya acrylate ifite reactivity nyinshi, ishobora gukora reaction ya polymerization, kandi ishobora no gukopororwa hamwe n'izindi monomer nyinshi; itsinda rya epoxy rishobora gukora reaction na hydroxyl, amino, carboxyl cyangwa aside anhydride, bigatuma habaho amatsinda menshi y'imikorere, bityo bikazana imikorere myinshi ku gicuruzwa. Kubwibyo, GMA ifite uburyo bwinshi cyane bwo gukoresha mu gukora synthesis ya organic, synthesis ya polymer, modification ya polymer, composite materials, ultraviolet curing materials, coating, kole, uruhu, chemical fibre papermaking, icapiro n'irangi, n'ibindi byinshi.

Gukoresha GMA mu gusiga ifu

Ifu ya acrylic ni ubwoko bunini bw'ifu ipfutse, ishobora kugabanywamo resins za hydroxyl acrylic, resins za carboxyl acrylic, resins za glycidyl acrylic, na resins za amido acrylic hakurikijwe uburyo butandukanye bwo gukangura bukoreshwa. Muri zo, resins ya glycidyl acrylic niyo resins ikoreshwa cyane yo gukangura ifu. Ishobora gukorwamo filime zifite ibikoresho byo gukangura nka aside polyhydric hydroxy, polyamines, polyols, resins polyhydroxy, na resins za polyhydroxy polyester.

Methyl methacrylate, glycidyl methacrylate, butyl acrylate, styrene bikunze gukoreshwa mu gupomesa polymerization y’urudaca mu gukora resin ya acrylic yo mu bwoko bwa GMA, naho aside dodecyl dibasic ikoreshwa nk'umuti uvura. Ifu ya acrylic ikozwe ifite imikorere myiza. Uburyo bwo gukora bushobora gukoresha benzoyl peroxide (BPO) na azobisisobutyronitrile (AIBN) cyangwa uruvange rwabyo nk'ibiyitangira. Ingano ya GMA igira ingaruka zikomeye ku mikorere ya filime yo gusiga. Iyo ingano ari nto cyane, urwego rwo guhuza rwa resin ni ruto, ingingo zo guhuza zigahinduka nke, ubucucike bw'ifishi yo gusiga ntibuhagije, kandi ubushobozi bwo kurwanya ingaruka za filime yo gusiga ni buke.

Ikoreshwa rya GMA mu guhindura polymer

GMA ishobora guterwa kuri polimeri bitewe n'uko hari acrylate double bond ifite imikorere myinshi, kandi itsinda rya epoxy riri muri GMA rishobora gukorana n'andi matsinda atandukanye y'imikorere kugira ngo rikore polimeri ifite imikorere. GMA ishobora guterwa kuri polyolefini yahinduwe hakoreshejwe uburyo nka solution grafting, melt grafting, solid phase grafting, radiation grafting, nibindi, kandi ishobora no gukora copolymers zifite imikorere hamwe na ethylene, acrylate, nibindi. Izi polimeri zifite imikorere zishobora gukoreshwa nk'ibintu bikomeza imikorere ya pulasitiki cyangwa nk'ibintu bihuza kugira ngo binoze imikoranire ya sisitemu zo kuvanga.

Igikoresho gikunze gukoreshwa mu guhindura polyolefin hakoreshejwe GMA ni dicumyl peroxide (DCP). Hari abantu bakoresha benzoyl peroxide (BPO), acrylamide (AM), 2,5-di-tert-butyl peroxide. Ibikoresho nka oxy-2,5-dimethyl-3-hexyne (LPO) cyangwa 1,3-di-tert-butyl cumene peroxide. Muri byo, AM igira ingaruka zikomeye mu kugabanya kwangirika kwa polypropylene iyo ikoreshejwe nk'igikoresho gitangira. Gushyira GMA kuri polyolefin bizatuma habaho impinduka mu miterere ya polyolefin, bizatuma habaho impinduka mu miterere y'ubuso bwa polyolefin, imiterere ya rheological, imiterere y'ubushyuhe n'imiterere ya mechanical. Polyolefin yahinduwe na GMA yongera polarity y'uruhererekane rwa molekile kandi icyarimwe yongera polarity y'ubuso. Kubwibyo, inguni yo guhuza ubuso iragabanuka uko igipimo cyo guteranya kiyongera. Bitewe n'impinduka mu miterere ya polymer nyuma yo guhindura GMA, bizagira ingaruka no ku miterere yayo ya crystalline na mechanical.

Gukoresha GMA mu gukora resin ivurwa n'imirasire ya UV

GMA ishobora gukoreshwa mu gukora resine zishobora kuvurwa na UV binyuze mu nzira zitandukanye za sintetike. Uburyo bumwe ni ukubanza kubona prepolymer irimo carboxyl cyangwa amino groups ku ruhande rw'uruhererekane binyuze muri radical polymerization cyangwa condensation polymerization, hanyuma ugakoresha GMA kugira ngo uhuze n'aya matsinda imikorere kugira ngo ushyireho amatsinda ashobora kuvurwa na foto kugira ngo ubone resine ishobora kuvurwa na foto. Muri copolymerization ya mbere, comonomers zitandukanye zishobora gukoreshwa kugira ngo ubone polymers zifite imiterere itandukanye ya nyuma. Feng Zongcai n'abandi bakoresheje 1,2,4-trimellitic anhydride na ethylene glycol kugira ngo bahuze na polymers zifite amashami menshi, hanyuma bashyiramo amatsinda ashobora kuvurwa na foto binyuze muri GMA kugira ngo amaherezo babone resine ishobora kuvurwa na foto hamwe n'uburyo bwiza bwo gushonga kwa alkali. Lu Tingfeng n'abandi bakoresheje poly-1,4-butanediol adipate, toluene diisocyanate, aside dimethylolpropionic na hydroxyethyl acrylate kugira ngo babanze bakore prepolymer ifite imigozi ibiri ikora neza, hanyuma bayishyire muri GMA. Imigozi ibiri ishobora kuvurwa n'urumuri irangizwa na triethylamine kugira ngo ibone emulsion ya polyurethane acrylate igendanwa n'amazi.