I-Glycidyl Methacrylate (GMA) iyi-monomer enama-bond amabili e-acrylate kanye namaqembu e-epoxy. I-Acrylate double bond inokusabela okuphezulu, ingabhekana nokusabela kwe-self-polymerization, futhi ingaphinde ihlanganiswe namanye ama-monomer amaningi; iqembu le-epoxy lingasabela nge-hydroxyl, i-amino, i-carboxyl noma i-acid anhydride, lethule amaqembu asebenzayo kakhulu, ngaleyo ndlela ilethe ukusebenza okwengeziwe kumkhiqizo. Ngakho-ke, i-GMA inobubanzi obukhulu kakhulu bezicelo ekuhlanganiseni kwezinto eziphilayo, ukuhlanganiswa kwe-polymer, ukuguqulwa kwe-polymer, izinto ezihlanganisiwe, izinto zokupholisa ze-ultraviolet, ukumbozwa, izinamathiselo, isikhumba, ukwenza iphepha le-fiber yamakhemikhali, ukuphrinta nokudaya, kanye neminye imikhakha eminingi.

Ukusetshenziswa kwe-GMA ekumbozweni kwempuphu

Izembozo zempuphu ye-acrylic ziyisigaba esikhulu sezembozo zempuphu, ezingahlukaniswa zibe ama-hydroxyl acrylic resins, ama-carboxyl acrylic resins, ama-glycidyl acrylic resins, kanye nama-amido acrylic resins ngokwezindlela ezahlukene zokupholisa ezisetshenziswayo. Phakathi kwazo, i-glycidyl acrylic resin iyi-resin esetshenziswa kakhulu yokugcoba impuphu. Ingakhiwa ibe amafilimu anezembozo zokupholisa ezifana nama-polyhydric hydroxy acids, ama-polyamines, ama-polyols, ama-polyhydroxy resins, kanye nama-hydroxy polyester resins.

I-Methyl methacrylate, i-glycidyl methacrylate, i-butyl acrylate, ne-styrene zivame ukusetshenziselwa i-free radical polymerization ukuhlanganisa i-resin ye-acrylic yohlobo lwe-GMA, kanti i-dodecyl dibasic acid isetshenziswa njenge-ejenti yokwelapha. I-acrylic powder coating elungiselelwe isebenza kahle. Inqubo yokuhlanganisa ingasebenzisa i-benzoyl peroxide (BPO) kanye ne-azobisisobutyronitrile (AIBN) noma izingxube zazo njengeziqalisi. Inani le-GMA linethonya elikhulu ekusebenzeni kwefilimu yokumboza. Uma inani lincane kakhulu, izinga lokuxhumanisa le-resin liphansi, amaphuzu okuxhumanisa okwelapha ambalwa, ubuningi bokuxhumanisa kwefilimu yokumboza akwanele, futhi ukumelana komthelela kwefilimu yokumboza akubi.

Ukusetshenziswa kwe-GMA ekuguqulweni kwe-polymer

I-GMA ingaxhunyelelwa ku-polymer ngenxa yokuba khona kwesibopho esiphindwe kabili se-acrylate esinomsebenzi ophezulu, futhi iqembu le-epoxy eliqukethwe ku-GMA lingasabela namanye amaqembu ahlukahlukene asebenzayo ukuze lakhe i-polymer esebenzayo. I-GMA ingaxhunyelelwa ku-polyolefin eguquliwe ngezindlela ezifana nokuxhumanisa isixazululo, ukuxhumanisa okuncibilikisiwe, ukuxhumanisa isigaba esiqinile, ukuxhumanisa ngemisebe, njll., futhi ingakha nama-copolymer asebenzayo ane-ethylene, i-acrylate, njll. Lawa ma-polymer asebenzayo angasetshenziswa njengezinto zokuqinisa ukuqinisa amapulasitiki obunjiniyela noma njengezihlanganisi ukuthuthukisa ukuhambisana kwezinhlelo zokuxuba.

Isiqalisi esivame ukusetshenziswa ekuguqulweni kwe-polyolefin yi-GMA yi-dicumyl peroxide (DCP). Abanye abantu basebenzisa ne-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 ekunciphiseni ukuwohloka kwe-polypropylene uma isetshenziswa njengesiqalisi. Ukufakwa kwe-GMA ku-polyolefin kuzoholela ekushintsheni kwesakhiwo se-polyolefin, okuzobangela ushintsho lwezakhiwo zobuso be-polyolefin, izakhiwo ze-rheological, izakhiwo zokushisa kanye nezakhiwo zemishini. I-polyolefin eguquliwe ye-GMA ikhulisa i-polarity yeketanga lama-molecule futhi ngasikhathi sinye ikhulisa i-polarity yobuso. Ngakho-ke, i-angle yokuxhumana kobuso iyancipha njengoba izinga lokufakwa kwe-graft likhuphuka. Ngenxa yezinguquko esakhiweni se-polymer ngemuva kokuguqulwa kwe-GMA, izothinta nezakhiwo zayo zekristalu nezemishini.

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

I-GMA ingasetshenziswa ekwakhiweni kwama-resin angelapheka e-UV ngezindlela ezahlukahlukene zokwenziwa. Enye indlela ukuthola kuqala i-prepolymer equkethe amaqembu e-carboxyl noma ama-amino kuchungechunge oluseceleni ngokusebenzisa i-radical polymerization noma i-condensation polymerization, bese usebenzisa i-GMA ukusabela nala maqembu asebenzayo ukwethula amaqembu azwela ukukhanya ukuze kutholakale i-resin ezwela ukukhanya. Ku-copolymerization yokuqala, ama-comonomers ahlukene angasetshenziswa ukuthola ama-polymer anezakhiwo zokugcina ezahlukene. UFeng Zongcai nabanye basebenzise i-1,2,4-trimellitic anhydride kanye ne-ethylene glycol ukusabela ekwakhiweni kwama-polymer ahlanganisiwe, bese bethula amaqembu azwela ukukhanya nge-GMA ukuze ekugcineni kutholakale i-resin ezwela ukukhanya ene-alkali solubility engcono. ULu Tingfeng nabanye basebenzise i-poly-1,4-butanediol adipate, i-toluene diisocyanate, i-dimethylolpropionic acid kanye ne-hydroxyethyl acrylate ukuze baqale bahlanganise i-prepolymer enezibopho ezimbili ezisebenzayo ezithinta ukukhanya, bese beyifaka nge-GMA. Izibopho ezimbili ezengeziwe ezilaphekayo kalula zisuswa yi-triethylamine ukuze kutholakale i-emulsion ye-polyurethane acrylate eboshiwe ngamanzi.