Umehluko phakathi kwe-PVC ne-PVC yezokwelapha

Yini i-PVC? I-PVC isifinyezo se-polyvinyl chloride (I-PolyvinylChloride), okuyinto engeyona enobuthi, impushana emhlophe engenaphunga. I-PVC inokuqina okuphezulu kwamakhemikhali, ipulasitiki enhle kanye nokufakwa kukagesi okuhle kakhulu. I-PVC yezokwelapha (i-polyvinyl chloride) i-thermoplastic resin polymerized by vinyl chloride ngaphansi kwesenzo se-initiator futhi isetshenziswa kabanzi kumishini yezokwelapha kanye nemishini yezokwelapha.. I-PVC yezokwelapha inamandla amahle kakhulu emishini, i-biocompatibility, ukungabi nobuthi, Umbala lula, ukuzinza okuhle kwamakhemikhali, ukumelana nokubanda, ukumelana nemisebe kanye nokufakwa kahle kukagesi.

Funda kabanzi mayelana ne-PVC yezokwelapha?

Imele ini i-pvc ngokwemibandela yezokwelapha?
Ngokwemithi, I-PVC ngokuvamile imele ukufinyela kwe-ventricular ngaphambi kwesikhathi. Lokhu kubhekisela esigqini senhliziyo esingavamile esibangelwa ukusebenza kukagesi ngaphambi kwesikhathi kwama-ventricles., okuphazamisa isigqi esivamile senhliziyo. I-PVC ngokuvamile ayinabungozi, kodwa uma kwenzeka njalo, kungase kube uphawu lwesifo senhliziyo esingaphansi.

I-PVC yokusetshenziswa kwezokwelapha iyimpahla, ehluke kakhulu ku-pvc okusho ukuthi yezokwelapha. I-PVC yezokwelapha isetshenziselwa kakhulu ukwenza izinto zokupakisha zemishini yezokwelapha nemishini yezokwelapha. Ngokwesibonelo, ingasetshenziswa njengento yokukhiqiza imishini yezokwelapha njengamashubhu okufakwayo, ama-catheter, nezinaliti zokubhoboza. Le mishini yezokwelapha ngokuvamile idinga ukuba ne-biocompatibility enhle nokuzinza kwamakhemikhali ukuze kuqinisekiswe ukuphepha nokusebenza ngempumelelo ngesikhathi sokusetshenziswa.

ikhemisi pvc

Izinzuzo zezokwelapha ze-PVC yokwelapha

I-PVC yokwelapha, leyo, i-polyvinyl chloride yokwelapha (I-Polyvinyl chloride) impahla, inezinzuzo ezibalulekile emkhakheni wokupakishwa kwemithi.

Excellent izakhiwo ngokomzimba of PVC yokwelapha

Ukumelana nokugqoka nokumelana nokukhala: Impahla ye-PVC yezemithi inokumelana nokugqokwa okuhle nokumelana nokukhala, okusho ukuthi kungavimbela ngokuphumelelayo umonakalo wokupakisha ngesikhathi sokuthutha nokugcinwa, ngalokho kuqinisekisa ubuqotho bomuthi.
Ukumelana nokucindezela kanye nokumelana nomthelela: Izinto ze-PVC nazo zinokuphikiswa okuhle kakhulu kokucindezela kanye nokumelana nomthelela, engagcina ukuzinza kokuma kwayo kanye nesakhiwo ezindaweni ezihlukahlukene, ukuvikela okwengeziwe imithi ekucindezelweni kwangaphandle noma umthelela.
Ukuvumelana nezimo namandla okugoqa: Amashidi e-PVC anokuguquguquka okuhle namandla okugoqa, futhi ingamelana ne-extrusion kanye nokuguqulwa okuvela emandleni angaphandle, ukuqinisekisa ukuthi izidakamizwa zihlala zinjalo futhi zingangcoli ngesikhathi zipakishwa futhi zisetshenziswa.

Ukuzinza okuhle kwamakhemikhali

Ukumelana ne-Acid ne-alkali: Impahla ye-PVC inokumelana okuqinile nezithako ezivamile zemithi njengama-acids nama-alkali, futhi ingavimbela ngempumelelo ukusabela kwamakhemikhali phakathi kwezidakamizwa nezinto zokupakisha, ngalokho kuqinisekisa ukuzinza kwamakhemikhali ezidakamizwa.
Ukumelana ne-oxidation nokumelana nokugqwala: Izinto ze-PVC nazo zinokuphikiswa okuhle kwe-oxidation nokumelana nokugqwala, futhi ingamelana nokuguguleka kwama-oxidants, ejenti ukunciphisa nezinye izinto, enweba futhi isikhathi seshelufu semithi.

I-Biocompatibility

Izinto ze-PVC zisetshenziswa kabanzi embonini yezokwelapha, njengokulungisa amapayipi, izikhwama zokumnika nezinye izinto zezokwelapha kanye nemishini ehlangana nomzimba womuntu. Lokhu kungenxa ye-biocompatibility yayo enhle, leyo, Izinto ze-PVC ngeke zibangele ukungezwani komzimba noma eminye imiphumela emibi emzimbeni womuntu, ngaleyo ndlela kuqinisekiswe ukuphepha nokuthembeka kwezidakamizwa ngesikhathi sokusetshenziswa.

Kulula ukucubungula kanye nezindleko eziphansi

Kulula ukucubungula nokubumba: Izinto ze-PVC zinepulasitiki enhle kanye nokucutshungulwa, futhi ingakwazi ukwenza kalula imisebenzi ehlukahlukene yokucubungula nokubumba, njenge-extrusion, ukubumba umjovo, njll., ngalokho kuhlangatshezwana nezidingo ezehlukene zenkundla yokupakishwa kwemithi.
Intengo ephansi: Uma kuqhathaniswa nezinye izinto zokupakisha ezisebenza kahle kakhulu, Izinto ze-PVC zinezindleko eziphansi zokukhiqiza, engasindisa izindleko futhi ithuthukise izinzuzo zezomnotho ezinkampanini ezithaka imithi.

Uhla olubanzi lwezinhlelo zokusebenza

Izinto ze-PVC zokwelapha zisetshenziswa kabanzi emkhakheni wokufakwa kwemithi ngenxa yezinzuzo ezingenhla., njengokupakishwa kwamabhamuza, amalebula ebhodleleni lemithi, izimvu zamanzi nezikhwama zemithi, njll. Lawa mafomu okupakisha awakwazi nje ukuvikela ngempumelelo imithi endaweni engaphandle, kodwa futhi uthuthukise ubulula bokugcina, ukuthuthwa nokusetshenziswa kwemithi.

Izinhlobo zohlelo lokusebenza lwe-PVC yezemithi emaphaketheni ezidakamizwa

I-PVC iyipulasitiki eshibhile futhi esebenza kahle ngokusebenza enamandla amakhulu kanye nokuqina, futhi ingamelana ngokuphumelelayo nokungena komoya-mpilo nomhwamuko wamanzi. Ngakho-ke, I-PVC ivame ukusetshenziswa njenge-substrate ekufakweni kwezidakamizwa, kanye nezakhiwo zokuvimbela jikelele zithuthukiswa ngokuhlanganisa nezinye izinto ezivimbelayo eziphezulu (njenge-aluminium foil). Ngakho-ke, I-PVC ingasetshenziswa kabanzi emaphaketheni emikhiqizo yezemithi.

Izinhlobo zohlelo lokusebenza lwe-PVC yezemithi (i-polyvinyl chloride) emaphaketheni emithi:

Ukupakishwa kwamabhamuza

Isakhiwo esiyinhlanganisela ye-PVC/PVDC sivame ukusetshenziswa ekufakweni kwamabhamuza, ikakhulukazi izidakamizwa eziqinile ezifana amaphilisi kanye capsules. Lokhu kufakwa kunganikeza ukuvikeleka okusebenzayo kokuhlukanisa ukuvimbela izidakamizwa ukuthi zingathintwa umoya nomswakama. Ukupakishwa kwamabhamuza kungenziwa nge-thermoformed noma kufakwe isitembu esibandayo. I-PVC ivamise ukusetshenziswa enqubweni ye-thermoforming enezinga lokushisa lokushisa elingaba ngu-100 ℃ kuya ku-150 ℃..

ukupakishwa kwe-blister yezemithi

Ukupakishwa komthamo wengxenye

Izinto ze-PVC/PVDC kulula ukuzisika futhi zingaklanywa ngendlela eguquguqukayo zibe ukupakishwa okuzimele komthamo owodwa kanye nebhamuza elilodwa., okuyinto elula ukuthi iziguli zizithathe lapho zisebenzisa futhi zinciphisa ukumosha izidakamizwa.

Ukupakishwa okukhethekile kwemithi:

Okwemithi ezwela umswakama, umoya-mpilo, njll., njengama-antibiotics, amavithamini, amaphilisi akhethekile, njll., Izinto ze-PVC/PVDC zinganikeza ukuvikeleka okuhle kakhulu.

Izikhwama zokumnika

I-PVC iphinde isetshenziselwe ukwenza izikhwama zokumnika zezokwelapha. Ucwaningo luye lwabonisa ukuthi ukwengeza i-organotin kungathuthukisa ukucaca kanye nokucutshungulwa kwe-fluidity yezikhwama zokumnika zezokwelapha ze-PVC.

Izingxenye zepulasitiki zokupakishwa kwemithi

Ngokuya ngezigaba zezinto, I-PVC ingenye yezinto ezivame ukusetshenziswa ezitsheni zepulasitiki kanye nezingxenye zokupakishwa kwemithi, futhi ingasetshenziswa ukwenza izingxenye zepulasitiki ezifana nesembozo kanye nezindawo zokusebenzelana.

Okungenhla ezinye zezinhlobo zezicelo eziyinhloko ze-PVC yezemithi emaphaketheni ekhemisi, ezisebenzisa izici zezinto ze-PVC, njengezakhiwo zokuvimbela, amandla emishini kanye nezakhiwo zokucubungula, ukuqinisekisa ikhwalithi nokuphepha kwezidakamizwa.