Irabha ye-EPDM ingeyesigaba se-thermoset elastomers (iraba), kuyilapho i-PTFE ingeye-thermoplastics.Sicela uqaphele ukuthi lezi zinto ezimbili zinokuminyana okuhluke kakhulu.
Irabha ye-EPDM iyi-thermoset elastomer noma impahla yerabha.Inokuminyana okuphansi kanye namandla okushisa aphezulu kakhulu uma kuqhathaniswa nezinye izinto zenjoloba.
I-PTFE iyi-fluoroplastic (i-fluorine-based thermoplastic).Kungaba nokuminyana okuphezulu phakathi kwama-thermoplastics.Ukwengeza, ingaba ne-ductility ephezulu ngokusesilinganisweni kanye namandla okudonsa kancane.
I-EPDM ithambile futhi yenza izinto zokuvala ezingcono (zivumelana kangcono nokuqedwa kwendawo emangelengele).i-polymer iqinile futhi iyashelela, engase ibambelele kangcono kuhlelo lokusebenza oluguquguqukayo noma oluhuquzelayo.Zombili zingaba nandaba namanzi olwandle ngokombono wokuhlasela kwamakhemikhali/ukugqwala.
Izinga lokushisa lokubola le-PTFE ngu>490°C (>910°F) futhi imikhiqizo eyinhloko yokubola igesi ye-hydrogen flouride (egqwala ngokwedlulele) kanye ne-carbon dioxide.Ayifanelekile ukusetshenziswa lapho izohlangana ne-acetone noma izinhlelo zokusebenza ezishisayo ze-alkaline.
Uma ufuna izingxenye zivale sebenzisa i-EPDM noma irabha Yemvelo, impahla ye-PTFE ngeke ivaleke kahle nhlobo.Iqinile, kodwa ihlala isikhathi eside futhi ngokuqinisekile ibiza kakhulu kodwa cishe ngeke ivaleke njenge-elastomer.
PS: Xhumana nathi nge-PTFE imikhiqizo eqediwe isampula yamahhala
Isikhathi sokuthumela: Jul-01-2017