Ngesikhathi senqubo yokwenza ipulasitiki, iziqinisi ze-calcium zinc zine-electronegativity ephezulu, kanti ama-node abukhali e-resin ye-PVC anobuhlobo obuthile, akha ama-complexes anamandla e-bond aqinile.
Izithambisi ze-calcium zinc zingahlukaniswa zibe yizithambisi ze-calcium zinc eziqinile kanye nezithambisi ze-calcium zinc eziwuketshezi
I-calcium zinc stabilizer ewuketshezi iyahambisana nama-resin nama-plasticizer, ikhanya kahle, inemvula encane, imithamo ephansi, futhi kulula ukuyisebenzisa. Izinkinga ezinkulu ukuthambisa okuncane kanye nokuwohloka ngesikhathi sokugcina isikhathi eside.
Iziqinisi ze-calcium zinc eziqinile zakhiwe kakhulu ngensipho ye-stearic acid. Lo mkhiqizo ubonakala ngokuthambiseka okuhle futhi ufanelekela ukucubungula amapayipi namaphrofayili e-PVC aqinile
Imikhiqizo ecutshungulwa kusetshenziswa ubuchwepheshe be-microemulsification inqoba izinkinga ezishiwo ngenhla. Gxila ekuthuthukiseni izici ezimbili: ukushintsha umbala wokuqala, ukusebenzisa inani elanele lensipho ye-zinc, nokusebenzisa i-composite agent ukwenza i-zinc chloride ingabi nangozi, eba yinkimbinkimbi ye-zinc ephezulu; Ukunciphisa inani lensipho ye-zinc ukuvimbela ukusha kwe-zinc nokushintsha umbala wokuqala ngezithasiselo kwaziwa ngokuthi ukuxubana kwe-zinc ephansi. Ayisetshenziswa kabanzi emikhiqizweni ethambile kuphela, kodwa futhi nasekucutshungulweni kwemikhiqizo eqinile.
Iziqinisi ze-calcium zinc, ngenxa ye-electronegativity yazo ephezulu, zinobuhlobo obuthile nama-node abukhali e-resin ye-PVC ngesikhathi senqubo yokwenza ipulasitiki, zakha ama-complexes e-bond energy aqinile anciphisa noma axazulule ukukhanga kwama-ion bond ezingqimbeni ezahlukene ze-PVC. Lokhu kwenza izingxenye ezixhumene ze-PVC zibe lula ukuzisabalalisa, futhi amaqembu ama-molecule athambekele emingceleni emincane, okuzuzisa ukwenza i-resin ye-PVC ibe yi-plastic. Kubangela ukwanda okukhulu kwengcindezi yokuncibilika, ukuncibilika
Ukuqina komzimba kuyehla, izinga lokushisa liyakhuphuka, kanti izinga lokushisa lokwenza ipulasitiki liyehla.
Ngaphezu kwalokho, njengoba imishini yokucubungula yendabuko ye-PVC yenzelwe ukucubungula kusetshenziswa iziqinisi zikasawoti we-lead, noma ngabe kunezengezo ezanele zokugcoba, ayikwazi ukuvimbela i-resin ukuthi iqhubeke nokuba yipulasitiki ngesikhathi esanele, okuphazamisa ibhalansi yokuqala yokugcoba. Esigabeni sokugcina sokusetshenziswa, ukuncibilika kwe-PVC kudla inani elikhulu le-heat stabilizer esigabeni se-homogenization, kodwa ngesikhathi esifanayo ayikwazi ukufeza i-viscosity kanye ne-elasticity efanele ukuhlangabezana nezidingo zokukhiqiza ze-PVC eqinile.
Isikhathi sokuthunyelwe: Septhemba-02-2024
