Glycidyl Methacrylate (GMA) waa monomer ka kooban labada acrylate bond bonds iyo epoxy group. Acrylate double bond waxay leedahay falcelin sare, waxay mari kartaa falcelinta is-polymerization, sidoo kale waxaa lagu koobi karaa monomers kale oo badan; Kooxda epoxy waxay ka falcelin kartaa hydroxyl, amino, carboxyl ama anhydride acid, iyagoo soo bandhigaya kooxo badan oo shaqeynaya, taasoo keenaysa shaqeyn dheeraad ah alaabta. Sidaa darteed, GMA waxay leedahay codsiyo aad u ballaaran oo kala duwan oo ku saabsan isku-dhafka dabiiciga ah, isku-dhafka polymer, wax-ka-beddelka polymer, qalabka isku dhafan, qalabka daaweynta ultraviolet, dahaarka, xabagta, maqaarka, waraaqaha kiimikada fiber-ka, daabacaadda iyo rinjiyeynta, iyo meelo kale oo badan.

Codsiga GMA ee daahan budada ah

Dahaarka budada acrylic waa qayb weyn oo ka mid ah dahaarka budada ah, kuwaas oo loo qaybin karo hydroxyl acrylic resins, carboxyl acrylic resins, glycidyl acrylic resins, iyo amido acrylic resins iyadoo loo eegayo wakiilada daaweynta kala duwan ee loo isticmaalo. Waxaa ka mid ah, resin glycidyl acrylic resin-ka ugu badan ee la isticmaalo. Waxa loo samayn karaa filimo leh dawooyinka sida polyhydric hydroxy acids, polyamines, polyols, polyhydroxy resins, iyo resins hydroxy polyester.

Methyl methacrylate, glycidyl methacrylate, butyl acrylate, styrene ayaa inta badan loo adeegsadaa polymerization xagjirka bilaashka ah si loo farsameeyo nooca GMA resin acrylic, iyo dodecyl dibasic acid ayaa loo isticmaalaa sidii wakiilka daaweynta. Dahaarka budada acrylic ee la diyaariyey ayaa leh waxqabad wanaagsan. Habka isku-darka wuxuu isticmaali karaa benzoyl peroxide (BPO) iyo azobisisobutyronitrile (AIBN) ama isku-darkooda sidii hindiseyaal. Qadarka GMA wuxuu saameyn weyn ku leeyahay waxqabadka filimka daahan. Haddii qaddarku aad u yar yahay, heerka is-goysyada ee resin-ku wuu hooseeyaa, dhibcaha is-goysyada bogsashada ayaa yar, cufnaanta is-goysyada ee filimka daahan kuma filna, saameynta iska caabinta filimka daahan ayaa liidata.

Codsiga GMA ee wax ka beddelka polymer

GMA waxaa lagu tallaali karaa polymer-ka sababtoo ah joogitaanka isku-xidhka labanlaaban ee acrylate oo leh hawl sare, iyo kooxda epoxy ee ku jirta GMA waxay la falgali karaan kooxo kale oo kala duwan si ay u sameeyaan polymer shaqeynaya. GMA waxaa lagu tallaali karaa polyolefin wax laga beddelay iyadoo loo marayo habab ay ka mid yihiin tallaalka xalinta, dhalidda dhalaalka, tallaalidda wejiga adag, tallaalidda shucaaca, iwm. in la adkeeyo balaastiigga injineernimada ama sida kuwa ku habboon si loo hagaajiyo waafaqsanaanta nidaamyada isku dhafka ah.

Bilawga inta badan loo isticmaalo wax ka beddelka tallaalka polyolefin ee GMA waa dicumyl peroxide (DCP). Dadka qaar ayaa sidoo kale isticmaala benzoyl peroxide (BPO), acrylamide (AM), 2,5-di-tert-butyl peroxide. Bilaabayaasha sida oxy-2,5-dimethyl-3-hexyne (LPO) ama 1,3-di-tert-butyl cumene peroxide. Waxaa ka mid ah, AM waxay saameyn weyn ku leedahay dhimista xaalufka polypropylene marka loo isticmaalo bilow ahaan. Ku-tallaalidda GMA ee polyolefin waxay u horseedi doontaa isbeddelka qaab-dhismeedka polyolefin, taas oo keeni doonta isbeddelka guryaha polyolefin ee dusha sare, sifooyinka rheological, guryaha kulaylka iyo sifooyinka farsamada. GMA graft-la bedelay polyolefin waxay kordhisaa polarity ee silsiladda kelli isla markaana waxay kordhisaa polarity dusha. Sidaa darteed, xagasha xidhiidhka dusha ayaa hoos u dhacaya marka heerka tallaalka uu kordho. Sababtoo ah isbeddelada qaab dhismeedka polymer ka dib wax ka beddelka GMA, waxay sidoo kale saameyn doontaa sifooyinkeeda crystalline iyo farsamada.

Codsiga GMA ee isku-dhafka UV-ga la daweyn karo

GMA waxaa loo isticmaali karaa isku dhafka UV-ga la daweyn karo iyada oo loo marayo waddooyin kala duwan oo synthetic ah. Mid ka mid ah hababka ayaa ah in marka hore la helo prepolymer ka kooban carboxyl ama kooxaha amino ee silsiladda dhinaca iyada oo loo marayo polymerization xagjirka ah ama uumi polymerization, ka dibna la isticmaalo GMA si ay ula falgalaan kooxahan shaqaynaysa si ay u soo bandhigaan kooxaha photosensitive si ay u helaan resin sawiro. Copolymerization-ka ugu horreeya, comonomers kala duwan ayaa loo isticmaali karaa si loo helo polymers leh hanti kama dambeys ah oo kala duwan. Feng Zongcai iyo al. loo isticmaalo 1,2,4-trimellitic anhydride iyo ethylene glycol si ay uga falceliyaan si ay u soo saaraan polymers hyperbranched, ka dibna waxay soo bandhigeen kooxaha sawir-qaadista iyada oo loo marayo GMA si ay ugu dambeyntii u helaan resin sawir leh oo leh milmo alkali ah oo wanaagsan. Lu Tingfeng iyo kuwa kale waxay isticmaaleen poly-1,4-butanediol adipate, toluene diisocyanate, dimethylolpropionic acid iyo hydroxyethyl acrylate si ay marka hore u abuuraan prepolymer leh bonds firfircoon oo firfircoon, ka dibna ku soo bandhig GMA Isku-xidho badan oo khafiif ah oo la daweyn karo ayaa laga saarayaa triethylamine hel emulsion polyurethane acrylate waterborne.