Phakathi nenqubo ye-plasticization, i-calcium zinc stabilizers ine-electronegativity ephezulu, futhi ama-node acute we-PVC resin anobudlelwane obuthile, akha ama-bond energy complexes aqinile.
Iziqinisi ze-calcium zinc zingahlukaniswa zibe iziqinisi eziqinile ze-calcium zinc kanye ne-liquid calcium zinc stabilizers.
I-Liquid calcium zinc stabilizer iyahambisana nama-resin nama-plasticizers, nokucaca okuhle, imvula ephansi, umthamo ophansi, nokusetshenziswa kalula. Okubi okuyinhloko ukuthambisa okuncane kanye nokuwohloka ngesikhathi sokugcinwa isikhathi eside.
I-Solid calcium zinc stabilizers ikakhulukazi yakhiwe insipho ye-stearic acid. Umkhiqizo ubonakala ngokuthambisa okuhle futhi ulungele ukucubungula amapayipi namaphrofayili e-PVC aqinile
Imikhiqizo ecutshungulwe kusetshenziswa ubuchwepheshe be-microemulsification inqoba izithiyo ezishiwo ngenhla. Gxila ekuthuthukiseni kusuka ezicini ezimbili: ukushintsha umbala wokuqala, ukusebenzisa inani elanele lensipho ye-zinc, nokusebenzisa i-ejenti eyinhlanganisela ukwenza i-zinc chloride ingabi nangozi, eba yinkimbinkimbi ye-zinc ephezulu; Ukunciphisa inani lensipho ye-zinc ukuvimbela ukushiswa kwe-zinc nokushintsha umbala wokuqala ngezithasiselo kwaziwa njengokuhlanganisa kwe-zinc ephansi. Ayisetshenziswa kakhulu emikhiqizweni ethambile kuphela, kodwa futhi nasekucutshungulweni kwemikhiqizo eqinile.
Iziqinisi ze-calcium zinc, ngenxa yokuqina kwazo okuphezulu kwe-electronegativity, zinokuhlobana okuthile kwama-node acute we-PVC resin ngesikhathi senqubo ye-plasticization, zakha ama-complexes anamandla ebhondi enza buthaka noma axazulule ukukhanga kwamabhondi e-ion ezingqimbeni ezihlukahlukene ze-PVC. Lokhu kwenza izingxenye ezihlanganisiwe ze-PVC zisakazeke kalula, futhi amaqembu amangqamuzana athambekele emingceleni emincane, okuzuzisa ukwakhiwa kwe-PVC resin. Ukubangela ukwanda okubukhali kwengcindezi yokuncibilika, ukuncibilika
I-viscosity yomzimba iyancipha, izinga lokushisa liyakhula, futhi izinga lokushisa le-plasticizing liyehla.
Ukwengeza, njengoba imishini yokucubungula ye-PVC yendabuko iklanyelwe ukucubungula kusetshenziswa i-lead stabilizers kasawoti, ngisho ne-lubricant eyanele eyengeziwe, ayikwazi ukuvimbela i-resin ekuqhubekiseni ipulasitiki ngesikhathi esanele, iphazamise ibhalansi yokuqala yokugcoba. Esigabeni sakamuva sokusetshenziswa, i-PVC iyancibilika idla inani elikhulu lokuqiniswa kokushisa esiteji se-homogenization, kodwa ngesikhathi esifanayo ayikwazi ukufeza i-viscosity ekahle nokunwebeka ukuze kuhlangatshezwane nezidingo zokukhiqiza ze-PVC eqinile.
Isikhathi sokuthumela: Sep-02-2024
