1. Yakaderera density uye yakakwirira kuzadza
Kuwanda kwe ethylene propylene rubber imhando yerabha yakaderera, uye density yayo i 0.87.Uye zvakare, huwandu hukuru hwemafuta hunogona kuzadzwa uye mafirita anogona kuwedzerwa, saka mutengo wezvigadzirwa zverubha unogona kuderedzwa, uye kushata kwemutengo wepamusoro we ethylene-propylene rubber raw rubber inogona kugadzirwa.Kune ethylene-propylene rabha ine yakakwira Mooney kukosha, iyo yemuviri uye yemagetsi simba inogona kuderedzwa mushure mekuzadza kwakanyanya.kwete yakakura.
2. Kuramba kuchembera
Ethylene-propylene rabha ine yakanakisa kuramba kwemamiriro ekunze, ozone kuramba, kupisa kupisa, asidhi uye alkali kuramba, mhute yemvura inopikisa, kugadzikana kwemavara, zvivakwa zvemagetsi, kuzadza mafuta uye kuyerera kwekamuri tembiricha.Ethylene-propylene rubber zvigadzirwa zvinogona kushandiswa kwenguva yakareba pa 120 ° C, uye inogona kushandiswa kwechinguva kana kupindira pa 150-200 ° C.Kuwedzera akakodzera anti-aging agent inogona kuwedzera tembiricha yayo yebasa.EPDM rabha yakasangana neperoxide inogona kushandiswa pasi pemamiriro akaoma.Pasi pemamiriro ezvinhu e-ozone concentration ye50pphm uye kutambanudza kwe30%, EPDM rubber inogona kusvika kupfuura 150h pasina kuputika.
3. Corrosion resistance
Nekuda kwekushaikwa kwe polarity uye yakaderera dhigirii yekusaturwa kwe ethylene-propylene rabha, ine kumira kwakanaka kune akasiyana makemikari epolar akadai sedoro, acids, alkalis, oxidants, refrigerants, detergents, mhuka nemafuta emiriwo, ketoni nemafuta, nezvimwe. ;Asi mune aliphatic uye anonhuwirira zvinonyungudutsa (senge peturu, benzene, etc.) uye kusagadzikana kwakashata mumafuta emaminerari.Kuita kuchadererawo pasi pekuita kwenguva refu kweiyo concentrated acid.
4. Kupikisa kwehuputi hwemvura
Ethylene-propylene rabha ine yakanakisa mhute yemvura inodzivirira uye inofungidzirwa kuve yakakwirira pane yayo kupisa kupisa.Mumhepo inopisa zvakanyanya pa230 ° C, hapana shanduko pakuonekwa mushure memaawa angangoita zana.Pasi pemamiriro akafanana, fluororubber, silicone rubber, fluorosilicone rubber, butyl rubber, nitrile rubber, uye rabha rechisikigo richaona kuderera kuri pachena mukuonekwa mushure menguva pfupi.
5. Kupokana nemvura inopisa
Ethylene-propylene rabha zvakare ine kuramba kuri nani kumvura inopisa, asi ine hukama kune ese vulcanization masisitimu.Iyo ethylene-propylene rabha ine dimorpholine disulfide uye TMTD sezvo vulcanization system ine shanduko shoma mumichina zvinhu mushure mekunyudzwa mumvura inopisa kwazvo pa125 ° C kwemwedzi gumi nemashanu, uye huwandu hwekuwedzera huwandu hunongova 0.3%.
6. Zvinhu zvemagetsi
Ethylene-propylene rabha ine yakanakisa magetsi ekudzivirira zvivakwa uye corona resistance, uye masimba ayo emagetsi ari pamusoro kana padyo neaya estyrene-butadiene rubber, chlorosulfonated polyethylene, polyethylene uye cross-linked polyethylene.
7. Kunaka
Sezvo pasina polar substituents mu molecular chimiro che ethylene-propylene rubber, iyo yakabatana simba re molecule yakaderera, uye molecular chain inogona kuchengetedza kushanduka-shanduka mumhando dzakasiyana-siyana, yechipiri chete kune yakasikwa rubber uye butadiene rubber, uye inogona kuchengetedza. panguva yakaderera tembiricha.
8. Kunamatira
Nekuda kwekushaikwa kwemapoka anoshanda muchimiro chemolecular ye ethylene-propylene rubber, iyo yakabatana simba yakaderera, uye rabha iri nyore kutumbuka, uye iyo yekuzvinamatira uye kunamatirana kwakashata zvakanyanya.
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Nguva yekutumira: Mar-17-2023