Ko te Glycidyl Methacrylate (GMA) he monomer he here rua acrylate me nga roopu epoxy.He tauhohenga teitei te here rua kiriaku, ka taea te tauhohenga whaiaro-polymerization, ka taea hoki te kape ki etahi atu monomers;Ka taea e te roopu epoxy te tauhohe ki te hydroxyl, amino, carboxyl, waikawa anhydride ranei, te whakauru atu i nga roopu mahi, na reira ka nui ake te mahi ki te hua.Na reira, he tino whanui te tono a GMA mo te whakahiato waro, polymer synthesis, polymer modification, composite material, ultraviolet curing materials, coatings, adhesives, hiako, matū muka pepa pepa, tā me te tae, me te maha atu o nga mara.

Te tono a GMA ki te paninga paura

Ko nga paninga paura kiriaku he waahanga nui o nga paninga paura, ka taea te wehewehe ki nga kapia kiriaku hydroxyl, kapia kiriaku carboxyl, kapia kiriaku glycidyl, me nga kapia kiriaku amido e ai ki nga momo rongoa rongoa i whakamahia.I roto ia ratou, ko te kapia kiriaku glycidyl ko te kapia paninga paura tino whakamahia.Ka taea te hanga hei kiriata me nga rongoa rongoa penei i te waikawa polyhydric hydroxy, polyamines, polyols, polyhydroxy resins, me te hydroxy polyester resins.

Ko te Methyl methacrylate, ko te glycidyl methacrylate, ko te butyl acrylate, ko te styrene te nuinga o te waa e whakamahia ana mo te polymerization tuwhena kore utu hei whakahiato i te kapia kiriaku momo GMA, ka whakamahia te waikawa dodecyl dibasic hei kaihoko rongoa.He pai te mahi o te paninga paura kiriaku.Ka taea e te tukanga whakahiato te whakamahi i te benzoyl peroxide (BPO) me te azobisisobutyronitrile (AIBN) me o raatau ranunga hei kaiwhakataki.Ko te nui o te GMA he awe nui ki te mahi o te kiriata paninga.Mena he iti rawa te nui, he iti te tohu whakawhiti o te kapia, he iti nga tohu whakawhiti whakaora, kaore i te nui te kiato whakawhiti o te kiriata paninga, a he kino te awangawanga o te kiriata paninga.

Te tono a GMA ki te whakarereke polymer

Ka taea te hono a GMA ki runga i te polymer na te mea he hononga takirua acrylate me te mahi teitei ake, a ka taea e te roopu epoxy kei roto i te GMA te tauhohe me etahi atu roopu mahi hei hanga i te waerau mahi.Ka taea te hono a GMA ki te polyolefin kua whakarereketia e nga tikanga penei i te whakapiri otinga, te whakarewa whakarewa, te whakapiri i te wahanga totoka, te whakararuraru iraruke, me etahi atu, ka taea hoki te hanga i nga copolymers mahi me te ethylene, acrylate, me etahi atu. ki te whakapakeke i nga kirihou miihini, hei whakahoahoa ranei hei whakapai ake i te hototahi o nga punaha whakakotahi.

Ko te kaitakawaenga e whakamahia ana mo te whakarereke i te polyolefin e GMA ko te dicumyl peroxide (DCP).Ko etahi ka whakamahi i te benzoyl peroxide (BPO), te acrylamide (AM), te 2,5-di-tert-butyl peroxide.Ko nga kaiwhakangungu penei i te oxy-2,5-dimethyl-3-hexyne (LPO) ranei 1,3-di-tert-butyl cumene peroxide.I roto ia ratou, he nui te painga o te AM ki te whakaiti i te paheketanga o te polypropylene ina whakamahia hei kaikawe.Ko te hono o te GMA ki runga i te polyolefin ka puta te huringa o te hanganga polyolefin, ka puta te huringa o nga ahuatanga o te mata o te polyolefin, nga ahuatanga rheological, nga waahi wera me nga taonga miihini.Ko te polyolefin kua whakarerekehia e te GMA graft-whakarereke te whakanui ake i te polarity o te mekameka ngota me te wa ano ka whakanui ake i te polarity o te mata.Na reira, ka heke te koki whakapiri mata i te pikinga o te reeti grafting.Na nga huringa o te hanganga polymer i muri i te whakarereketanga a GMA, ka pa ano ki ona ahuatanga tioata me te miihini.

Te tono a GMA i roto i te whakahiatotanga o te kapia rongoa UV

Ka taea te whakamahi i te GMA ki te whakahiato i nga kapia ka taea te rongoa i te UV na roto i nga momo huarahi waihanga.Ko tetahi tikanga ko te kii i te wa tuatahi he roopu carboxyl, amino ranei kei runga i te mekameka taha na roto i te polymerization tuwhena, te polymerization condensation ranei, katahi ka whakamahi i te GMA ki te tauhohe me enei roopu mahi ki te whakauru i nga roopu whakaahua ki te whiwhi i te kapia ka taea te rongoa.I roto i te kapolymerization tuatahi, ka taea te whakamahi i nga momo comonomers ki te tiki polymers me nga ahuatanga whakamutunga rereke.Feng Zongcai et al.I whakamahia te 1,2,4-trimellitic anhydride me te ethylene glycol hei tauhohe ki te whakahiato i nga polymers kua whakahiatohia, katahi ka whakauru i nga roopu whakaahua ma roto i te GMA kia whiwhi ai i te kapia ka taea te whakamaarama he pai ake te wairewa alkali.I whakamahia e Lu Tingfeng me etahi atu te poly-1,4-butanediol adipate, toluene diisocyanate, dimethylolpropionic acid me te hydroxyethyl acrylate ki te whakahiato tuatahi i te prepolymer me nga here takirua kaha photosensitive, katahi ka whakauru mai na roto i te GMA He maha atu nga herenga rua ka taea te rongoa ka whakakorehia e te triethylamine ki whiwhi whakaehunga polyurethane acrylate wai.

1

 

 


Te wa tuku: Hanuere-28-2021