Rabara ea EPDM ke ea sehlopha sa thermoset elastomers (rabara), ha PTFE e le ea thermoplastics.Ka kopo hlokomela hore lisebelisoa tse peli li na le li-density tse fapaneng haholo.
EPDM rabara ke thermoset elastomer kapa thepa ea rabara.E na le sekhahla se tlase haholo le mocheso o phahameng ka ho fetisisa o amanang le lisebelisoa tse ling tsa rabara.
PTFE ke fluoroplastic (thermoplastic e thehiloeng ho fluorine).E ka ba le letsoalo le phahameng haholo har'a li-thermoplastics.Ho phaella moo, e ka ba le ductility e phahameng ka mokhoa o itekanetseng le matla a fokolang a tlaase.
EPDM e bonolo 'me e etsa thepa ea ho tiisa hantle (e lumellana hantle le li-finishings tsa holimo).polymer e thata ebile e thella, e ka tšoarellang betere ts'ebelisong e matla kapa e hlabang.Ka bobeli li ne li ka tsotella metsi a leoatle ho latela tlhaselo ea lik'hemik'hale / ho bola.
Thempereichara ea ho bola ea PTFE ke >490°C (>910°F) mme lihlahisoa tse ka sehloohong tsa ho bola ke khase ea hydrogen flouride (e senyang haholo) le carbon dioxide.Ha e ea lokela ho sebelisoa moo e tla kopana le acetone kapa alkaline e chesang.
Haeba u batla hore likarolo li tiise sebelisa EPDM kapa Natural rabara, thepa ea PTFE e ke ke ea tiisa hantle ho hang.E thata ho feta, empa e tšoarella ho feta 'me ka sebele e bitsa chelete e ngata empa mohlomong e ke ke ea tiisa hantle joaloka elastomer.
PS: Ikopanye le rona bakeng sa sampole ea mahala ea PTFE
Nako ea poso: Jul-01-2017