I-ETFE (noma i-Ethylene tetraflurorethylene) iyipulasitiki esekelwe ku-fluorine, ifakwe indawo ephezulu yokuncibilika kanye nekhemikhali enhle kakhulu, impahla kagesi kanye namandla aphezulu ukumelana nemisebe.PTFE (noma i-polytetrafluroethylene) iqinile nge-fluorocarbon.Ukusebenza njenge-hydrophobic, hhayi amanzi noma izinto ezisekelwe emanzini ezimanzi i-PTFE.I-PTFE yehlisa ukungqubuzana, ukuguga futhi ngenxa yalokho ukusetshenziswa kwamandla kwamaphampu njengoba ine-coefficient eyodwa ephansi yokungqubuzana ngokumelene nanoma yikuphi okuqinile.
Izinto ezisetshenziswa kakhulu okufanele zisetshenziselwe ukuphinda kusetshenziswe iphampu ama-polymer e-PTFE kanye ne-ETFE.
I-PTFE yakhiwe ngama-athomu e-carbon ne-fluorine kuyilapho i-ETFE yakhiwe ngekhabhoni, i-fluorine ne-hydrogen.Ukunikeza izinzuzo zokusebenzisa kokubili.
Amandla aqinile we-ETFE angaba mkhulu ngokungu-38% kune-PTFE, okusho ukuthi impahla ye-ETFE ingaba ngaphansi kwezimo zokusebenza ezinzima kunozakwabo.
Yingakho amaphampu amakhemikhali amaningi ehlinzekwa ku-ETFE njengoba kuyimpahla enamandla yenqubo yokubumba umjovo abadlula kuyo.
Kodwa-ke i-PTFE ine-coefficient of friction kungxenye eyodwa kwezintathu ye-ETFE okwenza ifaneleke nakakhulu uma ukugeleza okuphezulu kudingeka njengoba kusiza ukunciphisa ukungqubuzana kwamapayipi Ukulahleka.Izakhiwo ezishisayo zazo zombili izinto nazo zingumehluko oyinhloko... I-PTFE ingafinyelela izinga lokushisa eliphakeme elingu-327c kuyilapho i-ETFE ingafinyelela izinga lokushisa eliphakeme lika-267c.
Lesi sigaba sibalulekile lapho ukhetha iphampu elifaneleka kakhulu;uma isicelo esidingekayo ukuze siphonswe singafinyelela noma yikuphi eduze nalawa mazinga okushisa kungcono ukhethe i-PTFE njengoba kokubili izinto ezisetshenziswayo ziya zithamba eduze kwamaphuzu azo okushisa aphezulu.
Ngaphezu kwalokho, i-PTFE ine-Limiting Oxygen Index (iphesenti elincane lokuhlushwa komoyampilo lapho i-polymer izoshisa) elikhulu kuno-95% kuyilapho i-ETFE iphakathi kuka-30-36%, okusho ukuthi i-PTFE kufanele ibhekwe ezindaweni eziphakeme ze-oxygen.
Isikhathi sokuthumela: Sep-11-2017