Mushonga PVC (Polyvinyl chloride) uye PVDC (Polyvinylidene chloride) ese ari maviri anowanzo shandiswa zvinhu muindasitiri yemishonga yekurongedza. Kunyange zvazvo vane zvimwe zvakafanana, pane misiyano yakakura pakati pezviviri izvi:

Kuumbwa:

Mushonga PVC: Iyo thermoplastic polymer inoumbwa zvakanyanya nevinyl chloride monomers. Zvimwe zvekuwedzera zvinosanganisirwa kuti zviwedzere zvimiro zvayo senge kushanduka, kukanganisa kuramba, uye kugadzikana.
PVDC: Iyo thermoplastic polymer inoumbwa zvakanyanya nevinylidene chloride monomers.. PVDC icopolymer yevinylidene chloride uye mamwe mamonomers, kazhinji ine chikamu chidiki chevinyl chloride.
Barrier Properties:

Mushonga PVC: PVC inopa zvipingamupinyi zviri pakati nepakati kurwisa unyoro, oksijeni, uye mamwe magasi. Inopa dziviriro yakakwana kune yakawanda zvigadzirwa zvemishonga asi inogona kusashanda kune yakanyanya kupfava kana kunyorova-kunzwa maumbirwo..
PVDC: PVDC inozivikanwa nekunaka kwayo inodzivirira zvivakwa. Inopa chipingamupinyi chakasarudzika kurwisa unyoro, oksijeni, chiedza, uye mamwe magasi. PVDC-yakavharidzirwa mafirimu kana laminates inopa kuchengetedzwa kwepamusoro kuve nechokwadi kugadzikana uye hupenyu hurefu hwezvigadzirwa zvemishonga..
Transparency:

Mushonga PVC: PVC inowanzo jeka, kubvumira kuongororwa kwekuona kwezviri mukati mekutakura.
PVDC: Mafirimu ePVDC kana mabhanhire anoonekera zvakanyanya, ichipa kujeka kwakanyanya uye kuoneka kwechigadzirwa chakaputirwa.
Kemical Resistance:

Mushonga PVC: PVC inoshingirira kumakemikari akawanda akajairika uye inopikisa zvakanaka mafuta, mafuta, nedoro. Zvisinei, inogona kunge isingaenderane nezvimwe zvinonyungudutsa kana makemikari ane hasha.
PVDC: PVDC inoratidza kukwirira kwemakemikari kuramba uye inoenderana nehuwandu hwakawanda hwezvinonyungudutsa nemakemikari zvichienzaniswa nePVC..
Kugadzikana kweTermal:

Mushonga PVC: PVC ine kugadzikana kwakanaka kwekupisa uye inokwanisa kumira tembiricha yakakura panguva yekugadzira nekuchengetedza.
PVDC: PVDC ine yakanakisa kupisa kugadzikana, kuibvumira kuchengetedza zvipingamupinyi zvayo kunyange pasi pemamiriro ekupisa kwepamusoro.
Regulatory Kufunga:

Mushonga PVC: PVC inogamuchirwa zvakanyanya uye inotenderwa kune mishonga yekurongedza kunyorera. Zvisinei, kunetseka kwakasimudzwa pamusoro pekugona kudonha kweplasticizers (e.g., DEHP) kubva kuPVC, kunyanya mune zvimwe zvirongwa zvekurapa.
PVDC: PVDC inowanzoonekwa sechinhu chakachengeteka uye chinoshanda chinodzivirira zvinhu zvekurongedza mishonga. Inowanzo shandiswa mumashandisirwo apo inowedzerwa zvipingamupinyi zvivakwa zvinodiwa.
Izvo zvakakosha kuti uzive kuti chaiwo zvivakwa uye magadzirirwo emushonga PVC nePVDC anogona kusiyana zvichienderana nemugadziri uye chinangwa chekushandisa.. Nhungamiro dzemitemo uye zvinodikanwa zvinogona zvakare kuraira kusarudzwa kwezvinhu zvepakeji yemishonga.