I-Glycidyl Methacrylate (GMA) yi-monomer ene-acrylate double bonds kunye namaqela e-epoxy. I-Acrylate double bond ine-reactivity ephezulu, ingenza i-self-polymerization reaction, kwaye inokwenziwa i-copolymerized kunye nezinye ii-monomers ezininzi; iqela le-epoxy linokusabela nge-hydroxyl, i-amino, i-carboxyl okanye i-acid anhydride, lizisa amaqela asebenzayo ngakumbi, ngaloo ndlela lizisa ukusebenza okungakumbi kwimveliso. Ke ngoko, i-GMA inoluhlu olubanzi kakhulu lwezicelo kwi-organic synthesis, i-polymer synthesis, i-polymer modification, izinto ezidityanisiweyo, izinto zokuphilisa ze-ultraviolet, ii-coating, i-adhesives, isikhumba, i-chemical fiber papermaking, i-printing kunye ne-dyeing, kunye nezinye iinkalo ezininzi.

Ukusetyenziswa kwe-GMA kwi-powder coating

Iingubo ze-acrylic powder ziluhlu olukhulu lweengubo ze-powder, ezinokwahlulwa zibe zii-hydroxyl acrylic resins, ii-carboxyl acrylic resins, ii-glycidyl acrylic resins, kunye nee-amido acrylic resins ngokwee-curing agents ezahlukeneyo ezisetyenzisiweyo. Phakathi kwazo, i-glycidyl acrylic resin yeyona isetyenziswa kakhulu yi-powder coating resin. Inokwenziwa ibe ziifilimu ezinee-curing agents ezifana nee-polyhydric hydroxy acids, ii-polyamines, ii-polyols, ii-polyhydroxy resins, kunye nee-hydroxy polyester resins.

I-Methyl methacrylate, i-glycidyl methacrylate, i-butyl acrylate, ne-styrene zihlala zisetyenziselwa i-free radical polymerization ukwenza i-GMA type acrylic resin, kwaye i-dodecyl dibasic acid isetyenziswa njenge-ejenti yokuphilisa. I-acrylic powder coating elungiselelweyo isebenza kakuhle. Inkqubo yokwenza ingasebenzisa i-benzoyl peroxide (BPO) kunye ne-azobisisobutyronitrile (AIBN) okanye imixube yazo njengezinto zokuqala. Ubungakanani be-GMA bunempembelelo enkulu ekusebenzeni kwefilimu yokugquma. Ukuba ubungakanani buncinci kakhulu, inqanaba lokugquma le-resin liphantsi, amanqaku okugquma ancinci, uxinano lokugquma lwefilimu yokugquma alwanelanga, kwaye ukumelana kwempembelelo kwefilimu yokugquma akubi kakhulu.

Ukusetyenziswa kwe-GMA ekuguqulweni kwe-polymer

I-GMA ingafakelwa kwi-polymer ngenxa yokuba kukho i-acrylate double bond enomsebenzi ophezulu, kwaye iqela le-epoxy elikwi-GMA linokusabela kunye namanye amaqela ahlukeneyo asebenzayo ukwenza i-polymer esebenzayo. I-GMA ingafakelwa kwi-polyolefin eguquliweyo ngeendlela ezifana ne-solution grafting, i-melt grafting, i-solid phase grafting, i-radiation grafting, njl., kwaye inokwenza ii-copolymers ezisebenzayo ezine-ethylene, i-acrylate, njl. Ezi polymers ezisebenzayo zingasetyenziswa njengee-agents zokuqinisa iiplastiki zobunjineli okanye njenge-compatibilizers ukuphucula ukuhambelana kweenkqubo zokuxuba.

I-initiator esetyenziswa rhoqo ekuguquleni i-polyolefin nge-GMA yi-dicumyl peroxide (DCP). Abanye abantu basebenzisa i-benzoyl peroxide (BPO), i-acrylamide (AM), i-2,5-di-tert-butyl peroxide. Ii-initiator ezifana ne-oxy-2,5-dimethyl-3-hexyne (LPO) okanye i-1,3-di-tert-butyl cumene peroxide. Phakathi kwazo, i-AM inefuthe elikhulu ekunciphiseni ukuwohloka kwe-polypropylene xa isetyenziswa njenge-initiator. Ukufakelwa kwe-GMA kwi-polyolefin kuya kukhokelela ekutshintsheni kwesakhiwo se-polyolefin, okuya kubangela utshintsho kwizakhiwo zomphezulu we-polyolefin, iimpawu ze-rheological, iimpawu zobushushu kunye neempawu zoomatshini. I-polyolefin eguqulweyo ye-GMA yonyusa i-polarity ye-molecular chain kwaye kwangaxeshanye yonyusa i-surface polarity. Ke ngoko, i-angle yoqhagamshelwano lomphezulu iyancipha njengoko izinga lokufakelwa lisanda. Ngenxa yotshintsho kwisakhiwo se-polymer emva kokuguqulwa kwe-GMA, iya kuchaphazela neempawu zayo ze-crystalline kunye nezomatshini.

Ukusetyenziswa kwe-GMA ekuqulunqweni kwe-resin enyangekayo ye-UV

I-GMA ingasetyenziswa ekuhlanganiseni ii-resin ezinokunyangwa yi-UV ngeendlela ezahlukeneyo zokwenziwa. Enye indlela kukufumana kuqala i-prepolymer equlathe amaqela e-carboxyl okanye e-amino kwi-side chain ngokusebenzisa i-radical polymerization okanye i-condensation polymerization, uze usebenzise i-GMA ukuphendula ngala maqela asebenzayo ukwazisa amaqela ane-photosensitive ukuze ufumane i-resin ene-photocurable. Kwi-copolymerization yokuqala, ii-comonomers ezahlukeneyo zingasetyenziselwa ukufumana ii-polymers ezineempawu zokugqibela ezahlukeneyo. UFeng Zongcai et al. basebenzise i-1,2,4-trimellitic anhydride kunye ne-ethylene glycol ukuphendula ekuhlanganiseni ii-polymers ezine-hyperbranched, baze bazise amaqela ane-photosensitive nge-GMA ukuze ekugqibeleni bafumane i-resin ene-photocurable enokunyibilika ngcono kwe-alkali. ULu Tingfeng nabanye basebenzise i-poly-1,4-butanediol adipate, i-toluene diisocyanate, i-dimethylolpropionic acid kunye ne-hydroxyethyl acrylate ukuze baqale benze i-prepolymer ene-photosensitive active double bonds, baze bayingenise nge-GMA. Ii-double bonds ezinyangwa lula ziyasuswa yi-triethylamine ukuze kufunyanwe i-polyurethane acrylate emulsion yamanzi.