Usizo lokucubungula i-PVC luyi-polymer ye-thermoplastic graft etholakala ku-polymerization ye-methyl methacrylate kanye ne-acrylate nge-seed lotion. Isetshenziswa kakhulu ekucubunguleni nasekukhiqizeni izinto ze-PVC. Inomthelela omuhle ekuthuthukiseni ukumelana nomthelela wezinto ze-PVC. Ingalungisa indlela ye-polymerization enezinyathelo eziningi isebenzisa i-seed lotion polymerization, okuhlanganisa i-lotion polymerization yendabuko kanye ne-core shell lotion polymerization. Inzuzo yayo isemandleni okulawula ukwakheka, usayizi, ubukhulu begobolondo, isilinganiso segobolondo kuya ku-core radius, izici zokusebenza kobuso, njll. kwezinhlayiya ngokwezidingo ezahlukene ngesikhathi senqubo yokusabela kokwenziwa, futhi ukusatshalaliswa kosayizi wezinhlayiya okuphumelayo kuyafana.
Izinto zokusetshenziswa eziyinhloko zezinsiza zokucubungula i-PVC yi-acrylic esters kanye ne-methyl methacrylate. Ekukhiqizweni kwangempela, i-acrylate ivame ukupholishwa kuqala ngamanye ama-monomers (njenge-styrene, i-acrylonitrile, njll.) nge-lotion ukuze kwakhiwe i-polymer enezinga lokushisa eliphansi lokushintsha kwengilazi, okungukuthi, i-core enezakhiwo ze-elastomer, bese i-graft copolymerized nge-methyl methacrylate, i-styrene, njll. ukuze kwakhiwe i-polymer enesakhiwo segobolondo eliyinhloko. Okuqukethwe okuqinile kwale lotion polymerized lotion ngokuvamile kungaba ngu-45% ± 3%, futhi i-lotion iyomiswa futhi ikhishwe amanzi ukuze kwenziwe okuqukethwe kwamanzi komkhiqizo kungaphansi kuka-1% (ingxenye yesisindo) ukuze kutholakale imikhiqizo yempuphu emhlophe.
I-polymerization ye-core shell lotion iyisisekelo sobuchwepheshe bokukhiqiza i-resin ye-ACR. Isakhiwo se-core shell se-ACR singahlukaniswa ngezinhlobo ezintathu: isakhiwo se-hard core soft shell, isakhiwo se-soft core hard shell, kanye nesakhiwo se-hard soft hard esinezingqimba ezintathu. Kodwa-ke, uhlobo oluyinhloko oluthengiswa emakethe njengamanje "yisakhiwo se-soft core hard shell". Ama-resin e-ACR analesi sakhiwo asebenza kahle futhi asetshenziswa kabanzi. I-core shell lotion polymerization ye-"soft core hard shell structure" inqubo lapho i-hard monomer ixhunyelelwa khona embewini yezinhlayiya ze-latex ezithambile ezakhiwe yisinyathelo sokuqala se-lotion polymerization. Uhlobo kanye nomthamo wama-emulsifiers, isilinganiso se-core-shell, indlela yokudla i-shell monomer, izinga lokuxhumanisa izinhlayiya ze-seed latex (i-rubber core), usayizi wezinhlayiya zembewu, kanye nohlobo kanye nomthamo we-agent yokuxhumanisa konke kunomthelela omkhulu esakhiweni se-core-shell sezinhlayiya ze-ACR latex kanye nokusebenza komkhiqizo wokugcina we-ACR.
Isikhathi sokuthunyelwe: Juni-12-2024
