Kayayyakin roba na gama-gari——Halayen EPDM
Amfani:
Kyakkyawan juriya na tsufa, juriya na yanayi, rufin lantarki, juriyar lalata sinadarai da haɓakar tasiri.
Rashin hasara:
Sannun saurin warkewa; Yana da wuya a haɗe tare da sauran rubbers mara kyau, kuma mannewa kai da mannewa juna ba su da kyau sosai, don haka aikin sarrafawa ba shi da kyau.
Ningbo Yokey Automotive Parts Co., Ltd mayar da hankali kan warware abokan ciniki' roba abu matsaloli da zayyana daban-daban abu formulations dangane daban-daban aikace-aikace al'amura.
Properties: cikakken bayani
1. Ƙananan yawa da babban cikawa
Ethylene propylene roba wani nau'i ne na roba tare da ƙananan ƙarancin 0.87. Bugu da kari, ana iya cika man mai da yawa da kuma kara masu, wanda zai iya rage tsadar kayayyakin roba da kuma yin tsadar danyen roba na roba na ethylene propylene. Bugu da ƙari, don roba na ethylene propylene tare da darajar Mooney mai girma, ƙarfin jiki da na inji bayan babban cikawa ba za a rage shi da yawa ba.
2. Juriyar tsufa
Ethylene propylene roba yana da kyakkyawan juriya na yanayi, juriya na ozone, juriya mai zafi, juriya na acid da alkali, juriya na tururi, kwanciyar hankali launi, aikin lantarki, cika mai da yawan zafin jiki. Ana iya amfani da samfuran roba na Ethylene propylene na dogon lokaci a zafin jiki na 120 ℃, kuma ana iya amfani dashi a taƙaice ko ɗan lokaci a 150 - 200 ℃. Za'a iya ƙara yawan zafin jiki na amfani ta ƙara maganin antioxidant da ya dace. Ana iya amfani da EPDM mai haɗe tare da peroxide a ƙarƙashin yanayi mara kyau. Lokacin da ozone maida hankali na EPDM ne 50 pphm da mikewa lokaci ne 30%, EPDM iya isa 150 h ba tare da fatattaka.
3. Juriya na lalata
Saboda rashin polarity da low unsaturation na ethylene propylene roba, yana da kyau juriya ga daban-daban na polar sunadarai kamar barasa, acid, alkali, oxidant, refrigerant, wanka, dabba da kayan lambu mai, ketone da maiko; Duk da haka, yana da rashin kwanciyar hankali a cikin abubuwan da ake amfani da su masu kitse da kamshi (kamar man fetur, benzene, da dai sauransu) da mai. Har ila yau, wasan kwaikwayon zai ragu a ƙarƙashin aikin dogon lokaci na mai daɗaɗɗen acid. A cikin ISO/TO 7620, an tattara bayanai game da tasirin kusan 400 gurɓataccen iskar gas da sinadarai na ruwa akan kaddarorin rubbers daban-daban, kuma an ƙayyade maki 1-4 don nuna tasirin su. Tasirin sinadarai masu lalata akan kaddarorin roba sune kamar haka.
Tasirin Girman Girman Girman Matsayi /% Rage Tauri akan Kayayyaki
1 <10 <10 Kadan ko babu
2 10-20 <20 karami
3 30-60 <30 Matsakaici
4>60>30 tsanani
4. Ruwa tururi juriya
EPDM yana da kyakkyawan juriya na tururi kuma ana kiyasin ya fi juriyar zafi. A cikin 230 ℃ superheated tururi, bayyanar ba ya canzawa bayan kusan 100 hours. Duk da haka, a cikin yanayi guda, bayyanar roba na fluorine, robar silicon, robar fluorosilicone, rubber butyl, robar nitrile da roba na halitta sun lalace sosai cikin kankanin lokaci.
5. Juriya ga ruwa mai zafi
Ethylene propylene roba shima yana da kyakkyawan juriya ga ruwa mai zafi, amma yana da alaƙa da duk tsarin vulcanization. Abubuwan injiniya na roba na ethylene propylene (EPR) wanda aka lalata tare da dimorphine disulfide da TMTD sun ɗan canza kaɗan bayan an nutsar da su cikin ruwa mai zafi na 125 ℃ na tsawon watanni 15, kuma ƙimar haɓakar ƙarar ta kasance kawai 0.3%.
6. Ayyukan lantarki
Ethylene propylene robar yana da kyakyawan rufin lantarki da juriya na korona, kuma kayan lantarkinsa sun fi ko kusa da na roba butadiene roba, chlorosulfonated polyethylene, polyethylene da polyethylene mai alaƙa.
7. Na roba
Saboda roba ethylene propylene ba shi da wani polar da ke maye gurbinsa a cikin tsarinsa na kwayoyin halitta da ƙananan ƙarfin haɗin kwayoyin halitta, sarkar kwayoyinsa na iya kula da sassauci a cikin fadi da kewayo, na biyu kawai ga roba na halitta da cis polybutadiene roba, kuma har yanzu yana iya kiyayewa a ƙananan yanayin zafi.
8. Adhesion
Saboda rashin ƙungiyoyi masu aiki a cikin tsarin kwayoyin halitta na roba na ethylene propylene, ƙarfin haɗin gwiwa yana da ƙasa, kuma roba yana da sauƙi don fesa, don haka haɗin kai da haɗin gwiwar juna suna da talauci sosai.
Lokacin aikawa: Oktoba-10-2022