Ko te Glycidyl Methacrylate (GMA) he monomer kei roto ngā hononga takirua acrylate me ngā rōpū epoxy. He nui te tauhohenga o te hononga takirua acrylate, ka taea te whai i te tauhohenga polymerization-whaiaro, ā, ka taea hoki te whakakotahi me te maha atu o ngā monomer; ka taea e te rōpū epoxy te tauhohe ki te hydroxyl, amino, carboxyl, waikawa anhydride rānei, ka nui ake ngā rōpū mahi, ā, ka nui ake te mahi a te hua. Nō reira, he whānui rawa ngā tono a GMA i roto i te hanga rauropi, te hanga polymer, te whakarerekētanga polymer, ngā rauemi hiato, ngā rauemi whakaora ultraviolet, ngā paninga, ngā piripiri, te hiako, te hanga pepa muka matū, te tā me te tae, me te maha atu o ngā mara.

Te whakamahinga o te GMA i roto i te paninga paura

He wāhanga nui ngā paninga paura kiriaku, ka taea te wehewehe ki ngā kapia kiriaku hydroxyl, ngā kapia kiriaku carboxyl, ngā kapia kiriaku glycidyl, me ngā kapia kiriaku amido i runga i ngā momo matū whakaora e whakamahia ana. I roto i ēnei, ko te kapia kiriaku glycidyl te kapia paninga paura e whakamahia nuitia ana. Ka taea te hanga hei kiriata me ngā matū whakaora pērā i ngā waikawa hydroxy polyhydric, ngā polyamine, ngā polyol, ngā kapia polyhydroxy, me ngā kapia hydroxy polyester.

Ko te methyl methacrylate, glycidyl methacrylate, butyl acrylate, me te styrene te tikanga e whakamahia ana mō te polymerization free radical hei hanga i te kapia kiriaku momo GMA, ā, ko te waikawa dodecyl dibasic te mea e whakamahia ana hei rongoā. He pai te mahi a te paninga paura kiriaku kua oti te whakarite. Ka taea te whakamahi i te benzoyl peroxide (BPO) me te azobisisobutyronitrile (AIBN) me ō rātou ranunga rānei hei tīmatanga i te tukanga hanga. He nui te awe o te nui o te GMA ki te mahi a te kiriata paninga. Mena he iti rawa te nui, he iti te tohu hononga whakawhiti o te kapia, he iti ngā pūwāhi hononga whakawhiti whakaora, kāore i te rawaka te mātotoru hononga whakawhiti o te kiriata paninga, ā, he ngoikore te ātete pānga o te kiriata paninga.

Te whakamahinga o te GMA i roto i te whakarerekētanga polymer

Ka taea te hono i te GMA ki te pūmua nā te mea he hononga takirua acrylate me te kaha teitei ake, ā, ka taea e te rōpū epoxy kei roto i te GMA te tauhohe ki ngā momo rōpū mahi maha atu hei hanga i tētahi pūmua mahi. Ka taea te hono i te GMA ki te polyolefin whakarerekētia mā ngā tikanga pēnei i te hono otinga, te hono rewa, te hono wāhanga totoka, te hono irahiko, me ētahi atu, ā, ka taea hoki e ia te hanga i ngā copolymer mahi me te ethylene, te acrylate, me ētahi atu. Ka taea te whakamahi i ēnei pūmua mahi hei kaihoko whakapakari hei whakapakari i ngā kirihou hangarau, hei hototahi rānei hei whakapai ake i te hototahitanga o ngā pūnaha whakaranu.

Ko te matū whakaoho e whakamahia whānuitia ana mō te whakarerekētanga o te polyolefin e te GMA ko te dicumyl peroxide (DCP). Ka whakamahia hoki e ētahi tāngata te benzoyl peroxide (BPO), te acrylamide (AM), te 2,5-di-tert-butyl peroxide. Ko ngā matū whakaoho pērā i te oxy-2,5-dimethyl-3-hexyne (LPO) me te 1,3-di-tert-butyl cumene peroxide rānei. I roto i ēnei, he pānga nui tō te AM ki te whakaiti i te pirau o te polypropylene ina whakamahia hei matū whakaoho. Mā te honohono o te GMA ki te polyolefin ka huri te hanganga o te polyolefin, ka huri ai ngā āhuatanga o te mata o te polyolefin, ngā āhuatanga rheological, ngā āhuatanga wera me ngā āhuatanga miihini. Ka whakanui ake te polyolefin kua whakarerekētia e te honohono GMA i te polarity o te mekameka ngota, ā, i te wā kotahi ka whakanui ake i te polarity o te mata. Nō reira, ka heke te koki whakapā o te mata i te pikinga o te tere honohono. Nā ngā huringa o te hanganga polymer i muri i te whakarerekētanga GMA, ka pāngia hoki ōna āhuatanga tioata me te miihini.

Te whakamahinga o te GMA i roto i te hanga kapia UV-whakaora

Ka taea te whakamahi i te GMA i roto i te hanga i ngā kapia UV-whakaora mā roto i ngā momo huarahi hanga. Ko tētahi tikanga ko te tiki tuatahi i tētahi prepolymer kei roto ngā rōpū carboxyl, amino rānei i te mekameka taha mā te polymerization radical, te polymerization condensation rānei, kātahi ka whakamahi i te GMA ki te tauhohe ki ēnei rōpū mahi hei whakauru i ngā rōpū photosensitive hei whiwhi i tētahi kapia photocurable. I te copolymerization tuatahi, ka taea te whakamahi i ngā comonomers rerekē hei whiwhi polymers me ngā āhuatanga whakamutunga rerekē. I whakamahia e Feng Zongcai me ētahi atu te 1,2,4-trimellitic anhydride me te ethylene glycol hei tauhohe ki te hanga i ngā polymers hyperbranched, kātahi ka whakauru i ngā rōpū photosensitive mā te GMA hei whiwhi i tētahi kapia photocurable me te wairewa alkali pai ake. I whakamahia e Lu Tingfeng mā te poly-1,4-butanediol adipate, toluene diisocyanate, dimethylolpropionic acid me te hydroxyethyl acrylate hei hanga tuatahi i tētahi prepolymer me ngā hononga takirua hohe photosensitive, kātahi ka whakaurua mā te GMA. Ka whakakorea ngā hononga takirua ka taea te whakaora e te triethylamine hei whiwhi i te polyurethane acrylate emulsion wai.

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Wā tuku: Hanuere-28-2021