1. Yintoni ishiti yePVC?
Iphepha le-PVC liyi-polymer eyenziwe nge-vinyl chloride njengesixhobo esisisiseko, kunye neziqinisi, izinto zokuthambisa, kunye nezizalisi zongeziweyo. Libonisa umsebenzi ogqwesileyo we-antioxidant, ukumelana okunamandla kwi-asidi kunye neempendulo ze-redox, amandla aphezulu, uzinzo olubalaseleyo, kunye nokungatsha, okwenza ukuba likwazi ukumelana nomonakalo ovela kutshintsho lwemozulu. Iindidi eziqhelekileyo zamaphepha e-PVC ziquka iintlobo ezibonakalayo, ezimhlophe, ezimnyama, ezinemibala, kunye nezingwevu.
2. Zithini iingenelo zephepha lePVC?
Iishiti zePVC zibonelela ngeenzuzo ezininzi, kuquka ukumelana nokugqwala, ukungatshi, iimpawu zokuthintela ukugquma, kunye nokumelana ne-oxidation. Ukongeza, zinokuphinda zisetyenziswe kwaye zibe neendleko eziphantsi zokuvelisa. Ngenxa yokuguquguquka kwazo kunye nokufikeleleka kwazo, zihlala zibambe isikhundla kwimarike yeeshiti zeplastiki.
3. Asetyenziselwa ntoni amaphepha ePVC?
Iishiti zePVC zinokuguquguquka okuninzi, zifumaneka kwiintlobo ngeentlobo ezifana neeshiti zePVC ezicacileyo, iishiti zePVC eziqandisiweyo, iishiti zePVC eziluhlaza, iiroli zeeshiti zePVC, nokunye. Ngenxa yokusebenza kwazo kakuhle kokucubungula, iindleko eziphantsi zokuvelisa, ukumelana nokugqwala, kunye neempawu zokuthintela ukugquma, iishiti zePVC zihlala zisetyenziselwa ukuvelisa izigqubuthelo zokubopha zePVC, amakhadi ePVC, iifilimu eziqinileyo zePVC, kunye neeshiti zePVC eziqinileyo.
4. Zithini iingxaki zeeshiti zePVC?
Iphepha le-PVC yiplastiki esetyenziswa kakhulu eyenziwe nge-polyvinyl chloride, kunye nee-plasticizers kunye nee-antioxidants. Ayinabungozi ngokwayo, kodwa izinto ezincedisayo eziphambili, njengee-plasticizers kunye nee-antioxidants, ziyingozi. Ii-plasticizers ezisetyenziswa kwiiphepha ze-PVC zemihla ngemihla ziquka i-dibutyl terephthalate kunye ne-dioctyl phthalate, zombini ezinobungozi. I-antioxidant lead stearate esetyenziswa kwi-PVC nayo inobungozi. Iiphepha ze-PVC ezineetyuwa ze-lead zinokukhupha i-lead xa zidibana nezinyibilikisi ezifana ne-ethanol kunye ne-ether. Iiphepha ze-PVC ezinee-antioxidants ezisekelwe kwi-lead ngamanye amaxesha zisetyenziselwa ukupakisha ukutya, kodwa xa zidibana nokutya okufana neentonga zentlama eqhotsiweyo, iikeyiki eziqhotsiweyo, iintlanzi eziqhotsiweyo, inyama ephekiweyo, ii-pastries, kunye nezidlo zokutya, iimolekyuli ze-lead zinokusasazeka ziye kwioyile. Ke ngoko, iingxowa zeplastiki zephepha le-PVC akufuneki zisetyenziselwe ukugcina ukutya, ingakumbi ukutya okunamafutha. Ukongeza, kumaqondo obushushu aphezulu ajikeleze i-50°C, iimveliso zeplastiki ze-polyvinyl chloride ziyabola kancinci kancinci, zikhuphe igesi ye-hydrogen chloride, eyingozi empilweni.
5. Ngaba iiPVC Sheets zikhuselekile ekutyeni?
Iiphepha zePVC zingakhuseleka ekutyeni, kodwa kuphela xa zenziwe ngePVC ekumgangatho wokutya kunye nezongezo ezihambelanayo. Iiphepha zePVC ezikumgangatho wokutya azinatyhefu, azinavumba, kwaye zifanelekile nokuba kukudibana kokutya okungathanga ngqo okanye ngokuthe ngqo, kuxhomekeke kwindlela ezifakwe ngayo kunye nokusetyenziswa kwazo. Ezi phepha zePVC ezikhuselekileyo ekutyeni zisetyenziswa kakhulu kwiipakethe zokutya, kwiipakethe zeblister, kwiifilimu zokuncamathela, kwiitreyi zokutya, nakwiikhava zokukhusela.
Nangona kunjalo, ayizizo zonke iiphepha zePVC ezithathwa njengezikhuselekileyo ekutyeni. Iiphepha zePVC ezikumgangatho wezoshishino zinokuba neeplastiki okanye izongezo ezingavumelekanga ukuba zinxibelelane nokutya. Ukuqinisekisa ukhuseleko, soloko uqinisekisa ukuba iphepha lePVC liyahambelana nemigaqo ye-FDA kunye ne-EU (EC), kwaye ucele amaphepha edatha yokhuseleko lwezinto ezenziwe ngumvelisi.
6.Ngaba iiPVC Sheets azinawo umlilo?
Ewe, amaphepha e-PVC ayakwazi ukuthintela ilangabi ngokwendalo xa ethelekiswa nezinye iiplastiki ezininzi. Ngenxa yomxholo wawo ophezulu we-chlorine, i-PVC iyazicima ngokwayo xa umthombo wangaphandle welangabi ususiwe, nto leyo enciphisa kakhulu ukusasazeka komlilo.
Amaphepha e-PVC ahlala esetyenziswa kwiindawo apho ukhuseleko lomlilo lubaluleke kakhulu, njengezinto zokwakha, iiphaneli zodonga, ubushushu bombane, imiqondiso, kunye neendawo zokuvala zoshishino. Kwiimeko ezininzi, amaphepha e-PVC anokufikelela kwimigangatho yamazwe ngamazwe yokuthintela ilangabi efana ne-UL94 V-0/V-1 okanye efanayo, kuxhomekeke kwifom.
Kwiiprojekthi ezinemigangatho engqongqo yokhuseleko lomlilo, amaphepha e-PVC okuthintela ilangabi anokusebenza okuphuculweyo anokwenziwa ngokwezifiso ukuze ahlangabezane neekhowudi ezithile zokwakha kunye neemfuno zokumelana nomlilo.
