ʻO Glycidyl Methacrylate (GMA) kahi monomer me nā paʻa pālua acrylate a me nā hui epoxy. He kiʻekiʻe reactivity ka paʻa pālua Acrylate, hiki ke hana i ka hopena polymerization ponoʻī, a hiki ke copolymerized me nā monomers ʻē aʻe; Hiki i ka hui epoxy ke hana me ka hydroxyl, amino, carboxyl a i ʻole acid anhydride, e hoʻolauna ana i nā hui hana hou aʻe, a laila e lawe mai i nā hana hou aku i ka huahana. No laila, he nui loa ka hoʻohana ʻana o GMA i ka organik synthesis, polymer synthesis, polymer modification, composite material, ultraviolet curing material, coatings, adhesives, ili, chemical fiber papermaking, paʻi a me ke kala, a me nā māla ʻē aʻe.

Ka hoʻohana ʻana o GMA i ka pauka

ʻO ka uhi ʻana i ka pauka Acrylic kahi ʻāpana nui o ka pauka pauka, hiki ke hoʻokaʻawale ʻia i nā resins hydroxyl acrylic, nā resins carboxyl acrylic, glycidyl acrylic resins, a me nā resins amido acrylic e like me nā mea hoʻōla ʻokoʻa i hoʻohana ʻia. I waena o lākou, ʻo glycidyl acrylic resin ka mea i hoʻohana nui ʻia i ka resin powder coating. Hiki ke hana ʻia i kiʻiʻoniʻoni me nā mea hoʻōla e like me ka polyhydric hydroxy acids, polyamines, polyols, polyhydroxy resins, a me ka hydroxy polyester resins.

Methyl methacrylate, glycidyl methacrylate, butyl acrylate, styrene e hoʻohana mau ʻia no ka polymerization radical manuahi e synthesize i ka resin acrylic type GMA, a hoʻohana ʻia ka dodecyl dibasic acid ma ke ʻano he lāʻau lapaʻau. He hana maikaʻi ka hana ʻana o ka pauka acrylic. Hiki i ke kaʻina hana synthesis ke hoʻohana i ka benzoyl peroxide (BPO) a me azobisisobutyronitrile (AIBN) a i ʻole kā lākou hui ʻana ma ke ʻano he mea hoʻomaka. He mana nui ka nui o GMA i ka hana o ke kiʻi uhi. Inā liʻiliʻi loa ka nui, haʻahaʻa ka degere crosslinking o ka resin, liʻiliʻi nā wahi crosslinking curing, ʻaʻole lawa ka crosslinking density o ke kiʻi uhi, a maikaʻi ʻole ka hopena o ke kiʻi uhi.

Ka hoʻohana ʻana o GMA i ka hoʻololi polymer

Hiki ke hoʻopili ʻia ʻo GMA ma luna o ka polymer ma muli o ka loaʻa ʻana o kahi paʻa pālua acrylate me ka ʻoihana kiʻekiʻe, a hiki i ka hui epoxy i loko o GMA ke hana me nā ʻano hui hana ʻē aʻe e hana i kahi polymer hana. Hiki ke hoʻopili ʻia ʻo GMA i ka polyolefin i hoʻololi ʻia e nā ʻano e like me ka grafting solution, melt grafting, solid phase grafting, radiation grafting, etc., a hiki iā ia ke hana i nā copolymers functionalized me ka ethylene, acrylate, etc. e hoʻoikaika i nā plastics ʻenekinia a i ʻole nā ​​mea hoʻohui e hoʻomaikaʻi i ka hoʻohālikelike o nā ʻōnaehana hui.

ʻO ka mea hoʻomaka i hoʻohana pinepine ʻia no ka hoʻololi ʻana i ka polyolefin e GMA ʻo dicumyl peroxide (DCP). Hoʻohana kekahi poʻe i ka benzoyl peroxide (BPO), acrylamide (AM), 2,5-di-tert-butyl peroxide. ʻO nā mea hoʻomaka e like me ka oxy-2,5-dimethyl-3-hexyne (LPO) a i ʻole 1,3-di-tert-butyl cumene peroxide. Ma waena o lākou, he hopena koʻikoʻi ko AM i ka hōʻemi ʻana i ka degradation o polypropylene ke hoʻohana ʻia ma ke ʻano he mea hoʻomaka. ʻO ka grafting o GMA ma ka polyolefin e alakaʻi i ka hoʻololi ʻana o ka hale polyolefin, kahi e hoʻololi ai i nā waiwai o ka polyolefin i ka ʻili, nā waiwai rheological, nā waiwai wela a me nā waiwai mechanical. Hoʻonui ka polyolefin graft-modified GMA i ka polarity o ke kaulahao mole a ma ka manawa like e hoʻonui ai i ka polarity o ka ʻili. No laila, e emi ana ka huina pili ili i ka pi'i 'ana o ka grafting rate. Ma muli o ka hoʻololi ʻana i ka hoʻolālā polymer ma hope o ka hoʻololi ʻana o GMA, e hoʻopili pū ʻia i kāna mau crystalline a me nā waiwai mechanical.

Ke noi ʻana o GMA i ka synthesis o UV curable resin

Hiki ke hoʻohana ʻia ʻo GMA i ka synthesis o nā resins curable UV ma o nā ʻano ala synthetic. ʻO kekahi ala e loaʻa mua i kahi prepolymer i loaʻa nā hui carboxyl a i ʻole amino ma ke kaulahao ʻaoʻao ma o ka polymerization radical a i ʻole ka polymerization condensation, a laila e hoʻohana iā GMA e hana me kēia mau pūʻulu hana e hoʻolauna i nā pūʻulu photosensitive e kiʻi i ka resin photocurable. I ka copolymerization mua, hiki ke hoʻohana ʻia nā comonomers ʻokoʻa no ka loaʻa ʻana o nā polymers me nā waiwai hope like ʻole. Feng Zongcai et al. ua hoʻohana i ka 1,2,4-trimellitic anhydride a me ka ethylene glycol e hana i ka synthesize hyperbranched polymers, a laila hoʻokomo i nā pūʻulu photosensitive ma o GMA no ka loaʻa ʻana o ka resin photocurable me ka solubility alkali maikaʻi. Ua hoʻohana ʻo Lu Tingfeng a me nā mea ʻē aʻe i ka poly-1,4-butanediol adipate, toluene diisocyanate, dimethylolpropionic acid a me ka hydroxyethyl acrylate e hana mua i kahi prepolymer me nā mea paʻa paʻa kiʻi photosensitive, a laila hoʻolauna iā ia ma o GMA ʻOi aku nā mea paʻa paʻa māmā-curable pālua e neutralized e triethylamine e e loaʻa i ka wai wai polyurethane acrylate emulsion.