Menene halayen EPDM roba?

1. Ƙananan yawa da babban cikawa
Ethylene-propylene roba roba ne mai ƙananan yawa, tare da nauyin 0.87.Bugu da ƙari, ana iya cika shi da babban adadin mai da EPDM.
Ƙara abubuwan da aka fiddawa na iya rage farashin samfuran roba kuma ya daidaita farashin ethylene propylene robar ɗanyen roba.Don roba na ethylene propylene tare da ƙimar Mooney mai girma, ƙarfin jiki da na inji na babban cikawa ba a raguwa sosai.

2. Juriyar tsufa
Ethylene-propylene roba yana da kyakkyawan juriya na yanayi, juriya na ozone, juriya na zafi, juriya na acid da alkali, juriya na ruwa, kwanciyar hankali launi, kaddarorin lantarki, kayan cika mai da ruwa a cikin zafin jiki.Za a iya amfani da samfuran roba na Ethylene-propylene na dogon lokaci a zazzabi na 120 ° C, kuma ana iya amfani da su a ɗan gajeren lokaci ko na ɗan lokaci a 150-200 ° C.Ƙara magungunan antioxidants masu dacewa zai iya ƙara yawan zafin jiki na amfani.EPDM roba giciye-haɗe tare da peroxide za a iya amfani da a karkashin m yanayi.EPDM roba iya isa fiye da 150h ba tare da fatattaka a karkashin yanayi na ozone maida hankali 50pphm da 30% mikewa.

3. Juriya na lalata
Saboda roba na ethylene propylene ba shi da polarity da ƙananan digiri na unsaturation, yana da kyau juriya ga nau'o'in sinadarai daban-daban kamar su alcohols, acids, alkalis, oxidants, refrigerants, detergents, dabba da kayan lambu mai, ketones da greases.Amma yana da rashin kwanciyar hankali a cikin abubuwan da ake amfani da su masu kitse da kamshi (kamar man fetur, benzene, da sauransu) da mai.Ayyukan kuma za su ragu a ƙarƙashin aikin dogon lokaci na mai daɗaɗɗen acid.A cikin ISO/TO 7620, kusan nau'ikan 400 na iskar gas da sinadarai na ruwa sun tattara bayanai game da kaddarorin roba daban-daban, kuma sun kayyade matakan 1-4 don nuna matakin aikinsu, da tasirin sinadarai masu lalata akan kaddarorin roba.

Ƙimar Girman Girman Matsayi/% Ƙimar rage taurin Tasiri akan aiki
1 <10 <10 kadan ko a'a
2 10-20 <20 karami
3 30-60 <30 matsakaici
4>60>30 mai tsanani

4. Ruwa tururi juriya
Ethylene-propylene roba yana da kyakkyawan juriya na tururin ruwa kuma an kiyasta ya fi ƙarfin zafi.A cikin 230 ℃ tururi mai zafi, bayyanar EPDM ya kasance baya canzawa bayan kusan 100h.Duk da haka, a ƙarƙashin irin wannan yanayin, roba na fluorine, robar silicone, robar fluorosilicone, rubber butyl, robar nitrile, da roba na halitta sun sami gagarumin lalacewa a bayyanar bayan ɗan gajeren lokaci.

5. Superheated ruwa juriya
Ethylene-propylene roba shima yana da mafi kyawun juriya ga ruwa mai zafi, amma yana da alaƙa da duk tsarin vulcanization.Ethylene-propylene roba tare da dimorpholine disulfide da TMTD a matsayin tsarin vulcanization, bayan an nutsar da su a cikin ruwa mai zafi a 125 ° C na watanni 15, kayan aikin injiniya sun canza kadan, kuma girman girman girman shine kawai 0.3%.

6. Ayyukan lantarki
Ethylene-propylene roba yana da kyawawan kaddarorin wutar lantarki da juriya na corona, kuma kayan lantarkinsa sun fi ko kusa da na roba styrene-butadiene, chlorosulfonated polyethylene, polyethylene da polyethylene mai alaƙa.

7. Sassauci
Saboda babu wasu abubuwan da ke maye gurbin polar a cikin tsarin kwayoyin halitta na roba na ethylene-propylene, makamashin haɗin gwiwar kwayoyin yana da ƙasa, kuma sarkar kwayoyin na iya kula da sassauci a cikin kewayo mai yawa, na biyu kawai ga na'urar negotiable da butadiene roba, kuma har yanzu yana iya zama. kiyaye a low yanayin zafi.

8. Adhesion
Ethylene-propylene roba ba shi da ƙungiyoyi masu aiki saboda tsarinsa na kwayoyin halitta kuma yana da ƙananan ƙarfin haɗin gwiwa.Bugu da kari, roba yana da sauƙin fure, kuma mannewa kansa da mannewar juna ba su da kyau sosai.