Ngophuhliso olukhawulezayo lweshishini lokupakisha, izinto zokupakisha ezikhaphukhaphu kwaye kulula ukuthutha ziphuhliswa ngokuthe ngcembe kwaye zisetyenziswa ngokubanzi. Nangona kunjalo, ukusebenza kwezi zinto zitsha zokupakisha, ngakumbi ukusebenza komqobo weoksijini kunokuhlangabezana neemfuno zomgangatho wokupakishwa kwemveliso? Le yinkxalabo eqhelekileyo yabathengi, abasebenzisi kunye nabavelisi beemveliso zokupakisha, ii-arhente zokuhlola umgangatho kuwo onke amanqanaba. Namhlanje siza kuxoxa ngamanqaku aphambili ovavanyo lwe-oxygen permeability yokupakishwa kokutya.
Izinga lokudluliselwa kwe-oksijeni lilinganiswa ngokulungisa ipakethe kwisixhobo sokuvavanya kunye nokufikelela kwi-equilibrium kwindawo yokuvavanya. Ioksijini isetyenziswa njengerhasi yovavanyo kunye nenitrogen njengerhasi yokuthwala ukwenza umahluko othile woxinaniso lweoksijini phakathi komphandle nangaphakathi kwepakethe. Iindlela zovavanyo lokupakishwa kokungena kokungena ziyindlela yoxinzelelo olukhulu kunye nendlela ye-isobaric, eyona ndlela isetyenziswa kakhulu yindlela yoxinzelelo. Indlela yokwahlukana koxinzelelo yohlulwe ibe ngamacandelo amabini: indlela yokwahlukana koxinzelelo lwe-vacuum kunye nendlela yokwahlukana koxinzelelo olulungileyo, kwaye indlela yokufunxa yeyona ndlela yovavanyo olumele kakhulu kwindlela yokwahlukana koxinzelelo. Ikwayeyona ndlela ichanekileyo yokuvavanya idatha yovavanyo, kunye noluhlu olubanzi lweegesi zokuvavanya, ezifana ne-oxygen, umoya, i-carbon dioxide kunye nezinye iigesi zokuvavanya ukunyanzeliswa kwezinto zokupakisha, ukuphunyezwa kwefilimu eqhelekileyo ye-GB / T1038-2000 yeplastiki kunye nephepha legesi yokuvavanya indlela yokuvavanya.
Umgaqo wovavanyo kukusebenzisa i-specimen ukwahlula igumbi lokungena kwizithuba ezibini ezihlukeneyo, kuqala ukucoca macala omabini omzekelo, uze ugcwalise icala elinye (icala loxinzelelo oluphezulu) kunye ne-0.1MPa (uxinzelelo olupheleleyo) igesi yokuvavanya, ngelixa elinye icala (icala eliphantsi loxinzelelo) lihlala kwi-vacuum. Oku kudala ukuhluka koxinzelelo lwegesi yovavanyo lwe-0.1MPa kumacala omabini omfanekiso, kwaye igesi yokuvavanya ingena kwifilimu ukuya kwicala eliphantsi loxinzelelo kwaye ibangele utshintsho kuxinzelelo kwicala eliphantsi loxinzelelo.
Inani elikhulu leziphumo zovavanyo lubonisa ukuba ukupakishwa kobisi olutsha, ukupakishwa kwe-oksijini yokupakisha phakathi kwe-200-300, ubomi beshelufu efrijiweyo malunga neentsuku ezili-10, ukunyanzeliswa kwe-oksijini phakathi kwe-100-150, ukuya kwiintsuku ezingama-20, ukuba i-oxygen permeability ilawulwa ngaphantsi kwe-5, ngoko ubomi beshelufu bunokufikelela ngaphezu kwenyanga eyi-1; kwiimveliso zenyama ephekiweyo, akufuneki kuphela ukunikela ingqalelo kwisixa se-oksijini yokungena kwezinto ukuthintela i-oxidation kunye nokuwohloka kweemveliso zenyama. Kwaye kwakhona ingqalelo ukusebenza umqobo ukufuma kwizinto eziphathekayo. Ukutya okuqhotsiweyo okunje ngee-noodles ezikhawulezileyo, ukutya okukhukhumeleyo, izinto zokupakisha, ukusebenza komqobo okufanayo akufuneki kuhoywe, ukupakishwa kokutya okulolo hlobo kukuthintela i-oxidation yemveliso kunye ne-rancidity, ke ukuphumeza ukungena komoya, ukugqunywa komoya, ukukhanya, isithintelo segesi, njl. njl. ngaphantsi kwe-3, ukunyameka kokungena kwezi 2 zilandelayo; imakethi ixhaphake kakhulu ukupakishwa kokulungiswa kwegesi. Akunjalo kuphela ukulawula inani le-oksijini ekhoyo kwizinto eziphathekayo, kukho iimfuno ezithile zokungena kwe-carbon dioxide.
Ixesha lokuposa: Feb-24-2023