Yikuphi ukulahlekelwa okuzobangelwa yi-CPE ye-polyethylene e-chlorine esezingeni eliphansi ekucutshungulweni kwe-PVC?

I-polyethylene ene-chlorine (CPE) ingumkhiqizo wokuguqulwa kwe-chlorine we-polyethylene enesisindo esiphezulu (i-HDPE), esetshenziswa njengesiguquli sokucubungula i-PVC, Okuqukethwe kwe-chlorine kwe-CPE kufanele kube phakathi kuka-35-38%. Ngenxa yokumelana kwayo nesimo sezulu okuhle kakhulu, ukumelana nokubanda, ukumelana nomlilo, ukumelana namafutha, ukumelana nokushayisana (i-CPE iyi-elastomer), kanye nokuzinza kwamakhemikhali.
I-polyethylene ene-chlorine (CPE) ingumkhiqizo wokuguqulwa kwe-chlorine we-polyethylene enesisindo esiphezulu (i-HDPE), esetshenziswa njengesiguquli sokucubungula i-PVC. Okuqukethwe kwe-chlorine kwe-CPE kufanele kube phakathi kuka-35-38%. Ngenxa yokumelana kwayo nesimo sezulu okuhle kakhulu, ukumelana nokubanda, ukumelana nomlilo, ukumelana nowoyela, ukumelana nomthelela (i-CPE iyi-elastomer), kanye nokuqina kwamakhemikhali, kanye nokuhambisana kwayo okuhle ne-PVC, i-CPE isibe yi-modifier yokuqina komthelela esetshenziswa kakhulu ekucutshungulweni kwe-PVC.
1 Ukucushwa Kwama-Molecular kwe-HDPE
Ngenxa yezimo zenqubo ezahlukene ngesikhathi sokusabela kwe-polymerization kwe-PE, kunomehluko othile ekucushweni kwama-molecule kanye nezakhiwo ze-polymer HDPE yayo. Izakhiwo ze-CPE ngemva kokucwiliswa kwe-HDPE ngezakhiwo ezahlukene nazo ziyahlukahluka. Abakhiqizi be-CPE kumele bakhethe ama-resin e-powder akhethekile e-HDPE afanele ukuze bakhiqize ama-resin e-CPE afanelekile.
2. Izimo ze-chlorine, okungukuthi inqubo ye-chlorine
I-CPE, njenge-modifier yokucubungula i-PVC, ivame ukwakheka ngokusabela kwe-chlorination kusetshenziswa indlela ye-chlorination yokumiswa kwamanzi. Izimo ezibalulekile zale nqubo ye-chlorination amandla okukhanya, umthamo wokuqala, ingcindezi yokusabela, izinga lokushisa lokusabela, isikhathi sokusabela, kanye nezimo zokusabela ze-neutralization. Isimiso se-chlorination ye-PE silula kakhulu, kodwa indlela ye-chlorination iyinkimbinkimbi kakhulu.
Ngenxa yokutshalwa kwezimali okuncane kakhulu emishinini yokukhiqiza i-CPE, izitshalo eziningi ezincane zokukhiqiza i-CPE sezivele zisakazeke kulo lonke elaseShayina. Lokhu akugcini nje ngokubangela ukungcola endaweni ezungezile, kodwa futhi kungenye yezizathu ezibalulekile zokungazinzi kwekhwalithi ye-CPE.
Njengamanje, kunenani elikhulu le-CPE esezingeni eliphansi emakethe. Ngokuvamile, kunezinhlobo ezimbili ze-CPE esezingeni eliphansi. Enye ibangelwa ezinye izitshalo zokukhiqiza ezingenazo izimo zobuchwepheshe kanye nezinqubo ze-chlorination eziphelelwe yisikhathi. Enye indlela ukuxuba inani elithile le-calcium carbonate noma i-talc powder ku-CPE ukuze kuhlangatshezwane nokuncintisana okungafanele.