download - MPW MED. INSTRUMENTS Spółdzielnia Pracy

15. Table of chemical resistance to the interaction of various categories ofreagents of plasticsGroups of the substance PS SAN PMMA PC PCV POM PE-LD PE-HD PP PMP ECTFE PTFE FKM EPDM NR SIin temp. 20°CETFE FEPPFAAldehydes - - ○ ○ - ○ - + + ○ + + + + ○ ○Cyclic alcohols + + + + + + + + + + + + - + + +Esters - - - - - - + ○ ○ ○ + + - ○ ○ ○Ether - - - - - + + ○ ○ - + + - - - -Ketones - - - - - + ○ ○ ○ ○ ○ + - ○ - -Strong or concentratedacids○ - - - + - + + + + + + + - -Weak or diluted acids ○ ○ ○ ○ + - + + + + + + + + ○ ○Oxidizing acidsor oxidizing substances- - - - - - - - - - + + ○ ○ - -cyclic hydrocarbons - - ○ ○ + + + + + ○ + + ○ - - -Ahs - - - - - + + ○ ○ - + + ○ - - -Haloid hydrocarbons - - - - - + + ○ ○ - + + ○ - - -Alkalis + + - - + + + + + + + + ○ + + ○+ = very good chemical resistancePermanent action of the substance does not cause damage through 30 days. The material is able tobe resistant through years.○ = chemical resistance of good to limitedContinuous action of the substance causes insignificant and partly reversible damage through theperiod of 7-30 days (e.g. puffing up, softening, reduced mechanical durability, discolouring).- = limited chemical resistanceThe material should not have the continuous contact with the substance. The immediate occurrenceof damage is possible (e.g. the loss of mechanical durability, deformation, discolouring, bursting,dissolving).Abbreviations of names of characterized plasticsPS: Polystyrene ECTFE: Ethylene/chlorotrifluoroethyleneSAN: Styrene-acrylonitrile ETFE: Ethylene/tetrafluoroethylenePMMA: Polymethyl methacrylate PTFE: PolytetrafluoroethylenePC: Polycarbonate FEP: Tetrafluoroethylene/perfluoropropylenePVC: Polyvinyl chloride PFA Tetrafluoroethylene/perfluoroalkylvinyletherPOM: Acetal polyoxymethylenel FKM Fluorcarbon rubberPE-LD: Low density polyethylene EPDM: Ethylene propylene dienePE-HD: High density polyethylene NR: Natural rubberPP: Polypropylene SI: Silicon rubberPMP: Polymethylpentene24