Ukumelana nokubola kwezinto eziqhelekileyo zevalve_ Teflon
I-Polytetrafluoroethylene (i-Teflon okanye i-PTFE), eyaziwa ngokuba "yinkosi yeplastiki", yikhompawundi yepolymer eyenziwe nge-polytetrafluoroethylene nge-polymerization Ngaphandle kwesinyithi esinyibilikisiweyo se-alkali, i-PTFE ayinakugqwaliswa yiyo nayiphi na i-reagent yekhemikhali. Umzekelo, xa ibilisiwe...
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