I-PVC processing aid i-thermoplastic graft polymer etholakala ku-polymerization ye-methyl methacrylate kanye ne-acrylate ngokusebenzisa isigcobo sembewu. Isetshenziselwa ikakhulukazi ukucubungula nokukhiqizwa kwezinto ze-PVC. Kunomphumela omuhle ekuthuthukiseni ukumelana komthelela wezinto ze-PVC. Ingalungiselela indlela ye-polymerization enezinyathelo eziningi isebenzisa i-polymerization yokugcoba imbewu, okuhlanganisa i-polymerization yendabuko ye-lotion kanye ne-core shell lotion polymerization. Inzuzo yayo isemandleni okulawula ukwakheka, usayizi, ukujiya kwegobolondo, isilinganiso segobolondo kuya endaweni ewumgogodla, izici zokusebenza kwendawo, njll. yezinhlayiya ngokuya ngezidingo ezihlukene phakathi nenqubo yokusabela kokuhlanganiswa, futhi umphumela wokusabalalisa usayizi wezinhlayiyana ufana ngokuqhathaniswa. .
Izinto zokusetshenziswa eziyinhloko zezinsiza zokucubungula ze-PVC yi-acrylic esters ne-methyl methacrylate. Emkhiqizweni wangempela, i-acrylate ivamise ukwenziwa i-polymerized namanye ama-monomers (njenge-styrene, i-acrylonitrile, njll.) ngokusebenzisa i-lotion ukuze yakhe i-polymer enezinga lokushisa eliphansi lengilazi elishintshashintshayo, okungukuthi, ingqikithi enezakhiwo ze-elastomer, bese igxunyeliswa ihlanganiswe nge-methyl methacrylate. , i-styrene, njll. ukwakha i-polymer enesakhiwo segobolondo esiyinhloko. Okuqukethwe okuqinile kwale lotion eyenziwe nge-polymerized lotion ngokuvamile kuba ngu-45% ± 3%, futhi indawo yokuthambisa iyomiswa futhi iphelelwe amanzi emzimbeni ukuze wenze okuqukethwe kwamanzi omkhiqizo kube ngaphansi kuka-1% (ingxenyana yobuningi) ukuze kutholwe imikhiqizo yempushana emhlophe.
I-Core shell lotion polymerization iwumgogodla wobuchwepheshe bokukhiqiza inhlaka ye-ACR. Isakhiwo segobolondo esiwumgogodla se-ACR singahlukaniswa sibe izinhlobo ezintathu: uhlaka oluqinile lwegobolondo elithambile, uhlaka oluthambile lwegobolondo eliqinile, kanye nesakhiwo esiqinile esinezendlalelo ezintathu. Kodwa-ke, izinhlobonhlobo eziyinhloko okwamanje ezithengiswa emakethe "isakhiwo segobolondo eliqinile elithambile". Ama-resin e-ACR analesi sakhiwo asebenza kahle futhi asetshenziswa kabanzi. I-core shell lotion polymerization "yesakhiwo segobolondo eliqinile elithambile" yinqubo lapho i-monomer eqinile ixhunyelelwa embewini yezinhlayiya ezithambile ze-latex ezakhiwe isinyathelo sokuqala se-lotion polymerization. Uhlobo nomthamo wama-emulsifiers, isilinganiso segobolondo eliyinhloko, indlela yokudla yegobolondo le-monomer, i-crosslinking degree yezinhlayiya ze-latex zembewu (umgogodla wenjoloba), usayizi wezinhlayiya zembewu, nohlobo nomthamo we-ejenti exhumanisayo konke kunomthelela omkhulu esakhiweni segobolondo eliwumgogodla. yezinhlayiya ze-latex ze-ACR kanye nokusebenza kokugcina komkhiqizo we-ACR.
Isikhathi sokuthumela: Jun-12-2024
