Ndeapi maitiro eEPDM rubber?

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 we ethylene propylene rubber raw raw. Kune ethylene propylene rabha 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 rabha yakabatanidzwa neperoxide 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 (zvakadai 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 pane akasiyana siyana erabha zvivakwa, 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 zvakanyanya 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 magetsi ayo ari nani pane kana padyo neaya estyrene-butadiene rubber, chlorosulfonated polyethylene, polyethylene uye cross-linked polyethylene.

7. Kuchinja-chinja
Nekuti hapana polar inotsiva muchimiro chemolecular ye ethylene-propylene rubber, iyo yakabatana simba remorekuru yakaderera, uye ketani yemamorekuru inogona kuchengetedza kuchinjika muhupamhi, yechipiri chete kune yakasikwa inogoneka 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. Mukuwedzera, rabha iri nyore kutumbuka, uye kuzvibata kwayo uye kunamatirana kwakashata zvakanyanya.