Leli phepha lihlola ukuthi iziqinisi zokushisa zithinta kanjani imikhiqizo ye-PVC, zigxile kuukumelana nokushisa, ukucutshungulwa, kanye nokucacaNgokuhlaziya izincwadi kanye nedatha yokuhlola, sihlola ukusebenzisana phakathi kweziqinisi kanye ne-resin ye-PVC, nokuthi zibumba kanjani ukuzinza kokushisa, ukulula kokukhiqiza, kanye nezakhiwo zokukhanya.
1. Isingeniso
I-PVC iyi-thermoplastic esetshenziswa kabanzi, kodwa ukungazinzi kwayo kokushisa kukhawulela ukucubungula.Iziqinisi zokushisaukunciphisa ukuwohloka emazingeni okushisa aphezulu futhi kuthinte ukucutshungulwa kanye nokucaca—okubalulekile ezinhlelweni zokusebenza ezifana nokupakisha kanye namafilimu okwakha.
2. Ukumelana Nokushisa Kwama-Stabilizer ku-PVC
2.1 Izindlela Zokuzinzisa
Iziqinisi ezahlukene (ezisekelwe ku-lead,i-calcium - i-zinc, organotin) sebenzisa izindlela ezihlukene:
Kusekelwe ku-lead: Isabela nama-athomu e-Cl ahlukene kumaketanga e-PVC ukuze kwakheke ama-complex azinzile, okuvimbela ukuwohloka.
I-calcium - i-zinc: Hlanganisa i-acid – ukubopha kanye ne-radical – ukuhlanza.
I-Organotin (i-methyl/butyl tin): Hlanganisa namaketanga e-polymer ukuze uvimbele ukususwa kwe-hydrochlorination, ucindezele ngempumelelo ukonakala.
2.2 Ukuhlola Ukuzinza Kokushisa
Ukuhlolwa kokuhlaziywa kwe-Thermogravimetric (TGA) kubonisa ukuthi i-PVC ezinzile ye-organotin inezinga lokushisa eliphakeme lokuqala lokuwohloka kunezinhlelo zendabuko ze-calcium-zinc. Nakuba iziqinisi ezisekelwe kumthofu zinikeza ukuzinza kwesikhathi eside kwezinye izinqubo, izinkinga zemvelo/zempilo zivimbela ukusetshenziswa.
3. Imiphumela Yokucutshungulwa
3.1 Ukugeleza Kokuncibilika Nokunamathela
Izithambisi zishintsha ukuziphatha kokuncibilika kwe-PVC:
I-calcium - i-zinc: Kungandisa ukuncibilika kokuncibilika, kuvimbele ukubumbana kokukhipha/ukujova.
I-Organotin: Yehlisa i-viscosity ukuze kucutshungulwe kahle futhi kube nokushisa okuphansi—kulungile kakhulu emigqeni yesivinini esiphezulu.
Kusekelwe ku-lead: Ukugeleza kokuncibilika okulingene kodwa amafasitela okucubungula amancane ngenxa yepuleti - ngaphandle kwezingozi.
3.2 Ukugcoba Nokukhishwa Kwesikhunta
Ezinye izinto eziqinisayo zisebenza njengezithambisi:
I-calcium – i-zinc formulations ivame ukufaka amafutha angaphakathi ukuze kuthuthukiswe ukukhululwa kwesikhunta ekubunjweni komjovo.
Iziqinisi ze-Organotin zithuthukisa ukuhambisana kwe-PVC - okungeziwe, okusiza ngokungaqondile ukucutshungulwa.
4. Umthelela Ekubonakaleni
4.1 Ukusebenzisana nesakhiwo se-PVC
Ukucaca kuncike ekuhlakazekeni kwe-stabilizer ku-PVC:
Izithambisi ze-calcium ezincane nezihlakazekile zinciphisa ukusabalala kokukhanya, zigcina ukucaca.
Iziqinisi ze-Organotinhlanganisa emaketangeni e-PVC, kunciphisa ukuphambuka kokukhanya.
Iziqinisi ezisekelwe ku-lead (izinhlayiya ezinkulu, ezingasatshalaliswanga ngokungalingani) zibangela ukusabalala kokukhanya okunzima, okwehlisa ukucaca.
4.2 Izinhlobo ze-Stabilizer kanye nokucaca
Izifundo zokuqhathanisa zibonisa:
Amafilimu e-PVC azinzile e-Organotin afinyelela ku-> 90% wokudlulisa ukukhanya.
Iziqinisi ze-calcium – zinc zikhiqiza ukudluliselwa okungu-85–88%.
Iziqinisi ezisekelwe ku-lead zisebenza kabi kakhulu.
Amaphutha anjenge-“fish eyes” (ahlobene nekhwalithi/ukuhlakazeka kwe-stabilizer) nawo anciphisa ukucaca—ama-stabilizer asezingeni eliphezulu anciphisa lezi zinkinga.
5. Isiphetho
Iziqinisi zokushisa zibalulekile ekucutshungulweni kwe-PVC, ekwakheni ukumelana nokushisa, ukucutshungulwa kalula, kanye nokucaca:
Kusekelwe ku-lead: Kunikeza ukuzinza kodwa kubhekene nokusabela okungekuhle kwemvelo.
I-calcium - i-zinc: Imvelo – inobungani kodwa idinga ukuthuthukiswa kokusebenziseka kalula/ukucaca.
I-Organotin: I-Excel kuzo zonke izici kodwa ibhekene nezingqinamba zezindleko/zokulawula kwezinye izindawo.
Ucwaningo lwesikhathi esizayo kufanele luthuthukise izinto eziqinisa ukulinganisela ukusimama, ukusebenza kahle kokucubungula, kanye nekhwalithi yokukhanya ukuze kuhlangatshezwane nezidingo zemboni.
Isikhathi sokuthunyelwe: Juni-23-2025