1. Kunamatira
Ethylene-propylene rubber ine simba rakaderera rakabatana nekuda kwekushayikwa kwemapoka anoshanda mukugadzirwa kwayo kwema molecular.Mukuwedzera, rabha iri nyore kutumbuka, uye kunamatira kwayo uye kunamatirana kwakashata zvakanyanya.
Ethylene Propylene Rubber Yakagadziriswa Mhando
Sezvo EPDM neEPDM rubber zvakabudirira kugadzirwa mukupera kwema1950 uye kutanga kwema1960, zvakasiyana-siyana zvakagadziriswa ethylene propylene rubber uye thermoplastic ethylene propylene rubber (yakadai seEPDM / PE) yakaonekwa munyika, nokudaro kupa Kushandiswa kwakakura kwe ethylene propylene rubber. inopa akawanda akasiyana uye mamakisi.Modified ethylene-propylene rubber inonyanya kusanganisira bromination, chlorination, sulfonation, maleic anhydride, maleic anhydride, silicone modification, uye nylon kuchinjwa kwe ethylene-propylene rubber.Ethylene-propylene rubber zvakare yakabatanidza acrylonitrile, acrylate uye zvichingodaro.Kwemakore, akawanda mapolymer zvinhu zvine zvakanaka zvakakwana zvivakwa zvakawanikwa kuburikidza nekusanganisa, copolymerization, kuzadza, kubatanidza, kusimbisa uye mamorekuru kusanganisa.Ethylene-propylene rabha yakagadziridzwawo zvakanyanya mukuita kuburikidza nekugadzirisa, nekudaro ichiwedzera huwandu hwekushandisa kwe ethylene-propylene rabha.
Brominated ethylene propylene rubber inogadziriswa nebrominating agent paguyo rakashama.Mushure mebromination, ethylene-propylene rabha inogona kuvandudza vulcanization yayo kumhanya uye adhesion kuita, asi simba rayo remuchina rinodzikira, saka brominated ethylene-propylene rabha inokodzera chete yepakati layer ye ethylene-propylene rabha nemamwe marubha.
Chlorinated ethylene propylene rubber inogadzirwa nekupfuura chlorine gasi kuburikidza neEPDM rabha mhinduro.Chlorination ye ethylene-propylene rubha inogona kuwedzera vulcanization kumhanya uye kuenderana neunsaturated inogoneka, kuramba murazvo, kuramba mafuta, uye kuita kwekunamatira kunovandudzwa zvakare.
Sulfonated ethylene propylene rubber inogadzirwa nekunyungudutsa EPDM rabha musolvent uye kuchirapa ne sulfonating agent uye neutralizing agent.Sulfonated ethylene propylene rabha ichashandiswa zvakanyanya mukunamira, machira akavharwa, kuvaka isina mvura isina kuonda nyama, uye anti-corrosion linings nekuda kweiyo thermoplastic elastomer zvimiro uye yakanaka yekunamatira zvivakwa.
Acrylonitrile-grafted ethylene-propylene rubber inoshandisa toluene sechinhu chinonyungudutsa uye perchlorinated benzyl doro semutangi wekubatanidza acrylonitrile pane ethylene-propylene rabha pa80°C.Acrylonitrile-modified ethylene-propylene rubber haingochengetedzi corrosion resistance ye ethylene-propylene rubber, asi inowanawo mafuta anopikisa akaenzana ne nitrile-26, uye ane zviri nani zvemuviri uye zvemichina uye zvivakwa zvekugadzirisa.
Thermoplastic ethylene propylene rubber (EPDM/PP) yakavakirwa paEPDM rabha uye polypropylene yekusanganisa.Panguva imwecheteyo, chigadzirwa chinoita kuti ethylene-propylene rubber isvike padanho rinotarisirwa rekuyambuka.Iyo haingochengetere chete hunhu hweethylene-propylene rubha maererano nekuita, asi zvakare ine inoshamisa tekinoroji mashandiro ejekiseni, extrusion, blow molding uye calendering ye thermoplastics.
2. Yakaderera density uye yakakwirira kuzadza pfuma
Kuwanda kwe ethylene propylene rubber irabha 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.
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.Mu ISO/TO 7620, marudzi angangosvika mazana mana emakemikari anoodza gasi uye emvura anounganidzwa pazvinhu zvemarubha akasiyana-siyana, uye 1-4 mamakisi anotsanangurwa kuratidza dhigirii rekuita, uye kukanganisa kwemakemikari anoodza pazvinhu zverabha:
Giredhi Vhoriyamu Kuzvimba mwero /% Kuoma kudzikisa kukosha Mhedzisiro pakuita
1 <10 <10 zvishoma kana hapana
2 10-20 <20 diki
3 30-60 <30 Pakati
4 >60 >30 yakaoma
4. Kupikisa kwehuputi hwemvura
Ethylene-propylene rabha ine yakanakisa mhute yemvura inodzivirira uye inofungidzirwa kuve iri nani 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 hwepedyo 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
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 rubber uye butadiene rubber, uye inogona kuramba ichichengetedza. pari pazasi tembiricha.
8. 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.Chikafu giredhi EPDM rubber hose (EPDM hose) cross-linked ne peroxide inogona kushandiswa pasi pemamiriro akaoma.Pasi pemamiriro ezvinhu e-ozone concentration ye50pphm uye kutambanudza kwe30%, EPDM rubber inogona kusvika kupfuura 150h pasina kuputika.
Nguva yekutumira: Mar-31-2023