1. Ƙananan yawa da kuma cikawa mai yawa
Robar Ethylene-propylene roba ce mai ƙarancin yawa, mai yawan 0.87. Bugu da ƙari, ana iya cika ta da mai mai yawa da EPDM.
Ƙara abubuwan cikawa na iya rage farashin kayayyakin roba kuma ya rama tsadar robar ethylene propylene mai tsadar roba. Ga robar ethylene propylene mai ƙimar Mooney mai yawa, kuzarin jiki da na injiniya na cikawa mai yawa ba ya raguwa sosai.
2. Juriyar tsufa
Robar Ethylene-propylene tana da juriyar yanayi mai kyau, juriyar ozone, juriyar zafi, juriyar acid da alkali, juriyar tururin ruwa, daidaiton launi, halayen lantarki, halayen cika mai da kuma ruwa a zafin ɗaki. Ana iya amfani da samfuran robar Ethylene-propylene na dogon lokaci a 120°C, kuma ana iya amfani da su na ɗan lokaci ko kuma a lokaci guda a 150-200°C. Ƙara antioxidants masu dacewa na iya ƙara zafin amfani da shi. Ana iya amfani da robar EPDM mai haɗin gwiwa da peroxide a ƙarƙashin yanayi mai tsauri. Robar EPDM na iya kaiwa sama da awanni 150 ba tare da fashewa ba a ƙarƙashin yanayin yawan ozone na 50ppm da kuma shimfiɗa kashi 30%.
3. Juriyar tsatsa
Saboda robar ethylene propylene ba ta da polarity da ƙarancin rashin isasshen ruwa, tana da kyakkyawan juriya ga sinadarai daban-daban na polarity kamar alcohols, acid, alkalis, oxidants, refrigerants, sabulun wanki, man dabbobi da kayan lambu, ketones da man shafawa. Amma tana da ƙarancin kwanciyar hankali a cikin sinadarai masu mai da ƙamshi (kamar fetur, benzene, da sauransu) da man ma'adinai. Hakanan aikin zai ragu a ƙarƙashin aikin acid mai ƙarfi na dogon lokaci. A cikin ISO/TO 7620, kusan nau'ikan sinadarai 400 na iskar gas mai lalata da ruwa sun tattara bayanai kan kaddarorin roba daban-daban, kuma sun ƙayyade matakai 1-4 don nuna matakin aikinsu, da tasirin sinadarai masu lalata akan halayen roba.
Ƙarar Maki Ƙimar kumburi/% Ƙimar rage tauri Tasiri kan aiki
1 <10 <10 ƙarami ko a'a
2 10-20 <20 ƙarami
3 30-60 <30 matsakaici
4 >60 >30 mai tsanani
4. Juriyar tururin ruwa
Robar Ethylene-propylene tana da juriyar tururin ruwa mai kyau kuma an kiyasta ta fi juriyar zafi. A cikin tururin da aka yi zafi sosai na 230℃, bayyanar EPDM ba ta canza ba bayan kusan awanni 100. Duk da haka, a ƙarƙashin irin wannan yanayi, robar fluorine, robar silicone, robar fluorosilicon, robar butyl, robar nitrile, da robar halitta sun fuskanci mummunan lalacewa a bayyanar bayan ɗan gajeren lokaci.
5. Juriyar ruwa mai zafi sosai
Robar Ethylene-propylene kuma tana da juriya mafi kyau ga ruwan da ke dumamawa sosai, amma tana da alaƙa da duk tsarin vulcanization. Robar Ethylene-propylene tare da dimorpholine disulfide da TMTD a matsayin tsarin vulcanization, bayan an nutsar da ita cikin ruwan da ke dumamawa sosai a 125°C na tsawon watanni 15, halayen injina ba sa canzawa sosai, kuma ƙimar faɗaɗawa da yawa shine 0.3%.
6. Aikin lantarki
Robar Ethylene-propylene tana da kyawawan kaddarorin kariya daga wutar lantarki da kuma juriya ga cutar corona, kuma kaddarorin wutar lantarkinta sun fi ko kusa da na robar styrene-butadiene, polyethylene mai chlorosulfonated, polyethylene da polyethylene mai haɗin gwiwa.
7. Sassauci
Saboda babu wani abu mai maye gurbin polar a cikin tsarin kwayoyin halitta na robar ethylene-propylene, kuzarin haɗin gwiwa na kwayar halitta yana da ƙasa, kuma sarkar kwayoyin halitta na iya kiyaye sassauci a cikin kewayon da ya fi yawa, na biyu kawai na robar halitta mai ciniki da butadiene, kuma har yanzu ana iya kiyaye shi a ƙananan yanayin zafi.
8. Mannewa
Robar Ethylene-propylene ba ta da ƙungiyoyi masu aiki saboda tsarin kwayoyin halitta kuma tana da ƙarancin kuzari mai haɗin kai. Bugu da ƙari, robar tana da sauƙin furewa, kuma mannewa da mannewa da juna ba su da kyau sosai.
Lokacin Saƙo: Nuwamba-17-2021
