I-Glycidyl Methacrylate (GMA) iyi-monomer enawo womabili amabhondi aphindwe kabili e-acrylate namaqembu e-epoxy. Ibhondi ephindwe kabili ye-Acrylate inokuphinda isebenze kabusha, ingabhekana nokusabela kwe-self-polymerization, futhi ingaphinda yenziwe i-copolymerized namanye ama-monomers amaningi; Iqembu le-epoxy lingasabela nge-hydroxyl, i-amino, i-carboxyl noma i-acid anhydride, lethule amaqembu asebenzayo amaningi, ngaleyo ndlela ilethe ukusebenza okwengeziwe emkhiqizweni. Ngakho-ke, i-GMA inohlu olubanzi ngokwedlulele lwezinhlelo zokusebenza ku-organic synthesis, polymer synthesis, polymer ukuguqulwa, izinto eziyinhlanganisela, izinto zokuphulukisa i-ultraviolet, okokunamathela, okunamathelayo, isikhumba, ukwenza iphepha kwamakhemikhali e-fiber, ukuphrinta nokudaya, neminye imikhakha eminingi.

Ukusetshenziswa kwe-GMA ku-powder coating

I-Acrylic powder coatings iyisigaba esikhulu se-powder coatings, engahlukaniswa ngama-hydroxyl acrylic resins, ama-carboxyl acrylic resins, ama-glycidyl acrylic resins, nama-amido acrylic resins ngokuya ngama-ejenti ahlukene okwelapha asetshenzisiwe. Phakathi kwazo, i-glycidyl acrylic resin iyona esetshenziswa kakhulu i-powder coating resin. Ingakhiwa ibe amafilimu anama-ejenti okwelapha afana ne-polyhydric hydroxy acid, ama-polyamines, ama-polyols, ama-polyhydroxy resins, nama-hydroxy polyester resins.

I-Methyl methacrylate, i-glycidyl methacrylate, i-butyl acrylate, i-styrene ivamise ukusetshenziselwa ukwenziwa kwe-polymerization yamahhala ukuze kuhlanganiswe i-GMA yohlobo lwe-acrylic resin, futhi i-dodecyl dibasic acid isetshenziswa njenge-ejenti yokwelapha. I-acrylic powder coating elungisiwe inokusebenza Okuhle. Inqubo yokuhlanganisa ingasebenzisa i-benzoyl peroxide (BPO) kanye ne-azobisisobutyronitrile (AIBN) noma izingxube zabo njengabaqalisi. Inani le-GMA linethonya elikhulu ekusebenzeni kwefilimu yokugqoka. Uma inani lincane kakhulu, i-crosslinking degree ye-resin iphansi, amaphuzu okuphulukisa okuphulukisayo ambalwa, ukuminyana kwe-crosslinking yefilimu yokumboza akwanele, futhi ukumelana nomthelela wefilimu yokumboza kubi.

Ukusetshenziswa kwe-GMA ekuguqulweni kwe-polymer

I-GMA ingaxhunyelelwa ku-polymer ngenxa yokuba khona kwe-acrylate double bond enomsebenzi ophezulu, futhi iqembu le-epoxy eliqukethwe ku-GMA lingasabela namanye amaqembu ahlukahlukene asebenzayo ukuze akhe i-polymer esebenzayo. I-GMA ingaxhunyelelwa ku-polyolefin eguquliwe ngezindlela ezifana nokuxhunyelelwa kwesixazululo, ukuxhunyelelwa kwencibilika, ukuxhunyelelwa kwesigaba esiqinile, ukuxhunyelelwa ngemisebe, njll., futhi ingakha ama-copolymers asebenza kahle ane-ethylene, acrylate, njll. Lawa ma-polymers asebenzayo angasetshenziswa njengama-toughening agents. ukuze uqinise amapulasitiki obunjiniyela noma njengabahambisanayo ukuze kuthuthukiswe ukuhambisana kwezinhlelo zokuhlanganisa.

Isiqalisi esivame ukusetshenziselwa ukuguqulwa kwegraft ye-polyolefin yi-GMA i-dicumyl peroxide (DCP). Abanye abantu baphinde basebenzise i-benzoyl peroxide (BPO), i-acrylamide (AM), i-2,5-di-tert-butyl peroxide. Iziqalisi ezifana ne-oxy-2,5-dimethyl-3-hexyne (LPO) noma i-1,3-di-tert-butyl cumene peroxide. Phakathi kwazo, i-AM inomthelela omkhulu ekwehliseni ukuwohloka kwe-polypropylene uma isetshenziswa njengesiqalisi. Ukuxhunyelelwa kwe-GMA ku-polyolefin kuzoholela ekushintsheni kwesakhiwo se-polyolefin, okuzobangela ukuguqulwa kwezakhiwo ezingaphezulu ze-polyolefin, izakhiwo ze-rheological, izakhiwo ezishisayo kanye nezakhiwo zemishini. I-GMA graft-modified polyolefin inyusa i-polarity yeketango lamangqamuzana futhi ngesikhathi esifanayo inyusa i-polarity yangaphezulu. Ngakho-ke, i-engeli yokuxhumana engaphezulu iyehla njengoba izinga lokuxhunyelelwa likhula. Ngenxa yezinguquko esakhiweni se-polymer ngemva kokuguqulwa kwe-GMA, izophinde ithinte izakhiwo zayo zekristalu nemishini.

Ukusetshenziswa kwe-GMA ekuhlanganisweni kwe-resin elaphekayo ye-UV

I-GMA ingasetshenziswa ekuhlanganiseni ama-resin elaphekayo e-UV ngokusebenzisa imizila eyahlukene yokwenziwa. Enye indlela ukuthola kuqala i-prepolymer equkethe i-carboxyl noma amaqembu e-amino ochungechungeni oluseceleni ngokusebenzisa i-radical polymerization noma i-condensation polymerization, bese usebenzisa i-GMA ukuze usabele ngalawa maqembu asebenzayo ukwethula amaqembu azwelayo ukuze kutholwe inhlaka efothokayo. Ku-copolymerization yokuqala, ama-comonomer ahlukene angasetshenziswa ukuthola ama-polymer anezindawo zokugcina ezahlukene. Feng Zongcai et al. isebenzise i-1,2,4-trimellitic anhydride ne-ethylene glycol ukuze isabele ekuhlanganiseni ama-polymers ane-hyperbranched, bese yethula amaqembu azwelayo nge-GMA ukuze ekugcineni ithole inhlaka ekwazi ukuthwebula enokuncibilika okungcono kwe-alkali. U-Lu Tingfeng nabanye basebenzise i-poly-1,4-butanediol adipate, i-toluene diisocyanate, i-dimethylolpropionic acid ne-hydroxyethyl acrylate ukuze bahlanganise kuqala i-prepolymer ene-photosensitive esebenzayo yamabhondi aphindwe kabili, bese beyethula nge-GMA Amabhondi aphindwe kabili alulaphekayo ancishiswa yi-triethylamine ukuze thola i-emulsion ye-polyurethane acrylate emanzini.