EPDM roj hmab belongs rau cov thermoset elastomers (rubber) kev faib tawm, thaum PTFE belongs rau cov thermoplastics.Thov nco ntsoov tias ob cov ntaub ntawv muaj qhov sib txawv loj heev.
EPDM roj hmab yog cov thermoset elastomer lossis cov khoom siv roj hmab.Nws muaj qhov tsis tshua muaj zog tsawg thiab muaj peev xwm ntau tshaj qhov ua tau zoo rau lwm cov roj hmab cov ntaub ntawv.
PTFE yog fluoroplastic (fluorine-based thermoplastic).Nws tuaj yeem muaj qhov ntom ntom ntom ntawm cov thermoplastics.Tsis tas li ntawd, nws tuaj yeem muaj qhov nruab nrab siab ductility thiab lub zog tensile tsawg.
EPDM yog softer thiab ua rau cov khoom sib khi zoo dua (ua tau zoo dua rau kev ua tiav ntawm qhov ntxhib).polymer yog tawv thiab slicker, uas yuav tuav tau zoo dua nyob rau hauv ib tug dynamic los yog abrasive daim ntawv thov.Ob leeg tuaj yeem saib xyuas tsawg dua ntawm cov dej hiav txwv los ntawm kev tawm tsam tshuaj lom neeg / corrosion standpoint.
Lub decomposition kub ntawm PTFE yog> 490 ° C (> 910 ° F) thiab cov khoom decomposition tseem ceeb yog hydrogen flouride gas (tsis tshua muaj corrosive) thiab carbon dioxide.Nws tsis tsim nyog rau kev siv qhov twg nws yuav nkag mus rau hauv kev sib cuag nrog acetone lossis kub alkaline daim ntaub ntawv.
Yog tias koj xav kom cov khoom siv EPDM lossis Natural roj hmab, cov khoom siv PTFE yuav tsis zoo tag nrho.Nws yog ib qho nyuaj, tsis tau ntev dua & yeej kim dua tab sis nws feem ntau yuav tsis kaw zoo li elastomer.
PS: Tiv tauj peb rau PTFE cov khoom tiav cov qauv dawb
Post lub sij hawm: Jul-01-2017