1. Yakaderera density uye yakakwirira kuzadza
Ethylene-propylene rabha irabha ine density yakaderera, ine density ye0.87.Mukuwedzera, inogona kuzadzwa nehuwandu hwemafuta uye EPDM.
Kuwedzera mafirita kunogona kuderedza mutengo wezvigadzirwa zverabha uye kugadzira mutengo wepamusoro weethylene propylene rubber raw raw.Kune ethylene propylene rubber ine yakakwira Mooney kukosha, iyo yemuviri uye yemagetsi simba rekuzadza kwepamusoro haina kuderedzwa zvakanyanya.
2. Kuramba kuchembera
Ethylene-propylene rabha ine yakanakisa kuramba kwemamiriro ekunze, ozone kuramba, kupisa kupisa, asidhi uye alkali kuramba, mhute yemvura kuramba, kugadzikana kwemavara, zvivakwa zvemagetsi, mafuta-kuzadza zvivakwa uye fluidity pane imwe tembiricha.Ethylene-propylene rubber zvigadzirwa zvinogona kushandiswa kwenguva yakareba pa 120 ° C, uye inogona kushandiswa kwenguva pfupi kana kupindira pa 150-200 ° C.Kuwedzera akakodzera antioxidants anogona kuwedzera kushandiswa kwayo tembiricha.EPDM rubber cross-linked with peroxide inogona kushandiswa pasi pemamiriro akaoma.EPDM rubber inogona kusvika kupfuura 150h pasina kuputika pasi pemamiriro e ozone concentration 50phm uye 30% kutambanudza.
3. Corrosion resistance
Nekuti ethylene propylene rabha haina polarity uye yakaderera dhigirii yeunsaturation, ine kumira kwakanaka kune akasiyana makemikari epolar akadai sedoro, acids, alkalis, oxidants, refrigerants, detergents, mhuka nemafuta emiriwo, ketoni uye girizi.Asi ine kusagadzikana kwakashata mumafuta uye zvinonyungudutsa zvinonhuhwirira (sepeturu, benzene, nezvimwewo) nemafuta emaminerari.Iko kuita kuchadererawo pasi pekuita kwenguva refu kweiyo concentrated acid.Mu ISO/TO 7620, marudzi angangosvika mazana mana emakemikari ekuora gasi uye emvura emakemikari akaunganidza ruzivo rwezvakasiyana siyana zverabha, uye akatsanangura 1-4 nhanho kuratidza dhigirii rekuita, uye kukanganisa kwemakemikari anoparadza pazvinhu zverabha.
Giredhi Vhoriyamu Kuzvimba mwero/% Kuoma kudzikisa kukosha Impact pakuita
1 <10 <10 zvishoma kana kwete
2 10-20 <20 diki
3 30-60 <30 zvepakati
4 >60 >30 yakaoma
4. Kupokana kwemhute yemvura
Ethylene-propylene rabha ine yakanakisa mhute yemvura inodzivirira uye inofungidzirwa kuve iri nani pane yayo kupisa kupisa.Muna 230 ℃ superheated steam, kutaridzika kweEPDM kwakaramba kusina kuchinja mushure menguva inenge 100h.Nekudaro, pasi pemamiriro akafanana, rabha refluorine, silicone rabha, fluorosilicone rabha, butyl rabha, nitrile rabha, uye rabha rechisikigo zvakasangana nekuderera kukuru pakuonekwa mushure menguva pfupi.
5. Superheated water resistance
Ethylene-propylene rabha zvakare ine kuramba kuri nani kumvura inopisa, asi ine hukama hwepedyo kune ese vulcanization masisitimu.Ethylene-propylene rubber ine dimorpholine disulfide uye TMTD seyo vulcanization system, mushure mekunyudzwa mumvura inopisa zvikuru pa 125 ° C kwemwedzi gumi nemishanu, maitiro emagetsi anoshanduka zvishoma, uye kuwedzera kwehuwandu inongova 0.3%.
6. Kuita kwemagetsi
Ethylene-propylene rabha ine yakanakisa magetsi ekudzivirira zvivakwa uye corona resistance, uye midziyo yayo yemagetsi iri nani pane kana padyo neiyo styrene-butadiene rabha, chlorosulfonated polyethylene, polyethylene uye cross-yakabatana polyethylene.
7. Kuchinja-chinja
Nekuti hapana polar inotsiva mune molecular chimiro cheethylene-propylene rubber, iyo yakabatana simba remorekuru yakaderera, uye cheni yemamorekuru inogona kuchengetedza kuchinjika muhupamhi, yechipiri chete kune yakasikwa kutaurirana uye butadiene rubber, uye inogona kuramba iripo. inochengetedzwa pakudziya kwakaderera.
8. Kunamatira
Ethylene-propylene rubber inoshaya mapoka anoshanda nekuda kwemaitiro ayo mamorekuru uye ine yakaderera yakabatana simba.Pamusoro pezvo, rabha iri nyore kutumbuka, uye kuzvibata-bata uye kunamatirana kwakashata zvakanyanya.
Nguva yekutumira: Nov-17-2021