I-Glycidyl Methacrylate (GMA) yi-monomer enazo zombini iibhondi ezimbini ze-acrylate kunye namaqela e-epoxy. Ibhondi ephindwe kabini ye-Acrylate inokuphinda isebenze kwakhona, inokuthi ingene kwi-self-polymerization reaction, kwaye inokwenziwa i-copolymerized nezinye iimonomers ezininzi; Iqela le-epoxy lingasabela nge-hydroxyl, i-amino, i-carboxyl okanye i-anhydride ye-asidi, ukwazisa amaqela asebenzayo ngakumbi, ngaloo ndlela kuzisa ukusebenza okungaphezulu kwimveliso. Ke ngoko, i-GMA inoluhlu olubanzi kakhulu lwezicelo kwi-organic synthesis, i-polymer synthesis, ukuguqulwa kwepolymer, imathiriyeli edibeneyo, izinto zokunyanga i-ultraviolet, izinto zokuthambisa, izinto zokuncamathelisa, ufele, ukwenza iphepha lemichiza yefayibha, ukuprinta kunye nokudaya, kunye nezinye iinkalo ezininzi.

Ukusetyenziswa kwe-GMA kumgubo wokugquma

Iingubo zomgubo we-Acrylic ludidi olukhulu lomgubo, olunokwahlulwa lube yi-hydroxyl acrylic resins, carboxyl acrylic resins, glycidyl acrylic resins, kunye ne-amido acrylic resins ngokweendlela ezahlukeneyo zokunyanga ezisetyenzisiweyo. Phakathi kwazo, i-glycidyl acrylic resin yeyona nto isetyenziswa kakhulu ngumgubo we-resin. Isenokwenziwa iifilimu ezinee-agent zokunyanga ezifana ne-polyhydric hydroxy acids, i-polyamines, ii-polyols, ii-polyhydroxy resins, kunye ne-hydroxy polyester resins.

I-Methyl methacrylate, i-glycidyl methacrylate, i-butyl acrylate, i-styrene idla ngokusetyenziswa kwi-polymerization yasimahla ye-radical ukwenza i-GMA uhlobo lwe-acrylic resin, kunye ne-dodecyl dibasic acid isetyenziswa njengearhente yokunyanga. I-acrylic powder coating elungiselelwe inokusebenza kakuhle. Inkqubo yokudibanisa ingasebenzisa i-benzoyl peroxide (BPO) kunye ne-azobisisobutyronitrile (AIBN) okanye imixube yabo njengabaqalisi. Ubungakanani be-GMA bunempembelelo enkulu ekusebenzeni kwefilimu yokugqoka. Ukuba inani lincinci kakhulu, idigri ye-crosslinking ye-resin iphantsi, iindawo ezinqamlekileyo zokuphilisa zimbalwa, ukuxinana kwe-crosslinking yefilimu yokugquma akwanele, kwaye ukuchasana kwempembelelo yefilimu yokugubungela kubi.

Ukusetyenziswa kweGMA kuhlengahlengiso lwepolymer

I-GMA inokufakelwa kwipolymer ngenxa yobukho be-acrylate bond ephindwe kabini kunye nomsebenzi ophezulu, kunye neqela le-epoxy eliqulethwe kwi-GMA lingasabela kunye namanye amaqela asebenzayo ukwenza i-polymer esebenzayo. I-GMA inokufakelwa kwi-polyolefin elungisiweyo ngeendlela ezifana nokufakwa kwesisombululo, ukuxutywa kwenyibilika, ukuxhunyelelwa kwesigaba esiqinileyo, ukuxhunyelelwa kwemitha, njl. njl., kwaye inokwenza ii-copolymers ezisebenzayo ezine-ethylene, i-acrylate, njl. ukuqinisa iiplastiki zobunjineli okanye njengabanxibelelanisi ukuphucula ukuhambelana kweenkqubo zokudibanisa.

Umqalisi osetyenziswa rhoqo xa kusenziwa uhlengahlengiso lwe-polyolefin yi-GMA yi-dicumyl peroxide (DCP). Abanye abantu basebenzisa i-benzoyl peroxide (BPO), i-acrylamide (AM), i-2,5-di-tert-butyl peroxide. Abaqalisi abafana ne-oxy-2,5-dimethyl-3-hexyne (LPO) okanye i-1,3-di-tert-butyl cumene peroxide. Phakathi kwabo, i-AM inempembelelo ebalulekileyo ekunciphiseni ukuthotywa kwe-polypropylene xa isetyenziswe njengomqalisi. Ukufakelwa kwe-GMA kwi-polyolefin kuya kukhokelela ekutshintsheni kwesakhiwo se-polyolefin, okuya kubangela ukuguqulwa kweempawu zomphezulu we-polyolefin, iipropati ze-rheological, iimpawu ze-thermal kunye ne-mechanical properties. I-GMA igrafti-modified polyolefin yandisa i-polarity ye-molecular chain kwaye kwangaxeshanye inyusa i-polarity yomhlaba. Ngoko ke, i-angle yokudibanisa umphezulu iyancipha njengoko izinga lokuxhunyelelwa linyuka. Ngenxa yotshintsho kwisakhiwo se-polymer emva kokuguqulwa kwe-GMA, kuya kuchaphazela i-crystalline kunye neempawu zomatshini.

Ukusetyenziswa kweGMA ekudibaneni kweresin enyangekayo yeUV

I-GMA inokusetyenziswa ekudibaneni kweereyini ezinyangekayo ze-UV ngokusebenzisa iindlela ezahlukeneyo zokwenziwa. Enye indlela kukufumana kuqala i-prepolymer equlethe i-carboxyl okanye amaqela e-amino kwikhonkco elisecaleni ngokusebenzisa i-radical polymerization okanye i-polymerization ye-condensation, kwaye usebenzise i-GMA ukusabela kunye nala maqela asebenzayo ukwazisa amaqela e-photosensitive ukufumana i-resin enokuthotywa. Kwi-copolymerization yokuqala, ii-comonomers ezahlukeneyo zingasetyenziselwa ukufumana iipolymers ezineempawu ezahlukeneyo zokugqibela. Feng Zongcai et al. wasebenzisa i-1,2,4-trimellitic anhydride kunye ne-ethylene glycol ukusabela kwi-polymers hyperbranched synthesize, kwaye emva koko yazisa amaqela e-photosensitive nge-GMA ekugqibeleni ifumene i-resin enokunyameka kunye nokunyibilika okungcono kwealkali. U-Lu Tingfeng kunye nabanye basebenzise i-poly-1,4-butanediol adipate, i-toluene diisocyanate, i-dimethylolpropionic acid kunye ne-hydroxyethyl acrylate ukuqala ukudibanisa i-prepolymer ene-photosensitive esebenzayo yebhondi ephindwe kabini, kwaye emva koko bayazisa nge-GMA Iibhondi eziphindwe kabini ezinyangekayo zithotywa yi-triethylamine ukuya. fumana i-emulsion ye-polyurethane acrylate yamanzi.