Uyini umehluko phakathi kwesikhwama se-PVC esithambile se-vinyl nesikhwama sepulasitiki se-PVC?

Izinto ezimbili zenziwe ngezinto ezifanayo, kodwa izilinganiso zezinto zihlukile, isimo esibunjiwe sithambile ngakolunye uhlangothi futhi sinzima ngakolunye.

Isikhwama sepulasitiki se-PVC

Umbala wemvelo uphuzi ngokushintshashintsha futhi uyacwebezela.Ukungafihli kungcono kune-polyethylene ne-polypropylene, kodwa kuncane kune-polystyrene.Ngokuya ngenani lezithasiselo, ingahlukaniswa ibe i-polyvinyl chloride ethambile futhi eqinile.Imikhiqizo ethambile inokuguquguquka, ukuqina nokunamathela.Ukuqina kwemikhiqizo eqinile yi-polyethylene ephansi, kodwa uma iphansi kune-polypropylene, ukumhlophe kuzokwenzeka ekugobeni.Imikhiqizo evamile: amapuleti, amapayipi, ama-soles, amathoyizi, iminyango namafasitela, ama-wire sheath, izinto zokubhala, njll. Kuyinto ye-polymer esebenzisa ama-athomu e-chlorine esikhundleni sama-athomu e-hydrogen ku-polyethylene.

I-Chemical and Physical Properties ye-PVC (i-Polyvinyl Chloride) I-PVC eqinile ingenye yezinto ezisetshenziswa kakhulu zepulasitiki.Izinto ze-PVC ziyi-amorphous material.Ekusetshenzisweni kwangempela kwezinto ze-PVC, iziqinisi, izinto zokugcoba, imithi eyisizayo, izingulube, ama- impactors nezinye izithasiselo kuvame ukungezwa [2].

Izinto ze-PVC azishi, ziqinile, zimelana nesimo sezulu futhi zinokuzinza okuhle kakhulu kwejometri.I-PVC imelana kakhulu nama-oxidizing agents, ama-ejenti anciphisayo nama-acids aqinile.Kodwa-ke, ingagqwala ngama-acid oxidizing agxilile njenge-concentrated sulfuric acid ne-concentrated nitric acid, futhi ayifanele ukuthintana nama-hydrocarbon anephunga elimnandi noma e-chlorinated.

Ukushisa okuncibilika kwe-PVC ngesikhathi sokucubungula kuyipharamitha yenqubo ebaluleke kakhulu.Uma le pharamitha ingalungile, izinkinga zokubola kwezinto zizokwenzeka.Izakhiwo zokugeleza ze-PVC zimbi kakhulu futhi uhla lwenqubo yalo luncane kakhulu.Izinto ze-PVC ezinesisindo esiphansi ze-molecular zivame ukusetshenziswa, ikakhulukazi ngenxa yokuthi izinto ze-PVC ezinesisindo samangqamuzana aphezulu kunzima ukucubungula (lolu hlobo lwezinto ngokuvamile ludinga ukungezwa kwamafutha ukuze kuthuthukiswe izakhiwo zokugeleza).Izinga lokuncipha kwe-PVC liphansi kakhulu, ngokuvamile li-0.2-0.6%.