1. Kuwanda kwakaderera uye kuzadza kwakawanda
Rabha reEthylene-propylene irabha rine density yakaderera, ine density ye0.87. Pamusoro pezvo, rinogona kuzadzwa nehuwandu hwakawanda hwemafuta uye EPDM.
Kuwedzera mafiller kunogona kuderedza mutengo wezvigadzirwa zverabha uye kutsiva mutengo wakakwira werabha re ethylene propylene rabha risina kugadzirwa. Kune rabha re ethylene propylene rine kukosha kwakanyanya kweMooney, simba remuviri neremuchina rekuzadza rakawanda harideredzwe zvakanyanya.
2. Kuramba kukwegura
Rabha reEthylene-propylene rine simba rakanaka rekudzivirira mamiriro ekunze, simba rekudzivirira ozone, simba rekudzivirira kupisa, simba rekudzivirira acid nealkali, simba rekudzivirira utsi hwemvura, simba remavara, simba remagetsi, simba rekuzadza mafuta uye kuyerera kwemvura patembiricha yemumba. Zvigadzirwa zverabha reEthylene-propylene zvinogona kushandiswa kwenguva yakareba pa120°C, uye zvinogona kushandiswa kwenguva pfupi kana nguva nenguva pa150-200°C. Kuwedzera ma antioxidants akakodzera kunogona kuwedzera tembiricha yekushandiswa kwayo. Rabha reEPDM rakabatana neperoxide rinogona kushandiswa mumamiriro ezvinhu akaoma. Rabha reEPDM rinogona kusvika maawa anopfuura 150 risingatsemuke pasi pemamiriro ehuwandu hweozone hwe50pphm uye 30% kutambanudza.
3. Kuramba ngura
Nekuti rabha ye ethylene propylene haina polarity uye haina kuguta zvakanyanya, inodzivirira zvakanaka makemikari akasiyana-siyana e polar akadai sealcohols, acids, alkalis, oxidants, refrigerants, sipo, mafuta emhuka nemiriwo, ketones nemafuta. Asi haina kugadzikana kwakasimba mumafuta nezvinonhuwira (senge peturu, benzene, nezvimwewo) nemafuta emaminerari. Kushanda kwayo kuchadererawo kana yave kushanda kwenguva refu ne concentrated acid. Mu ISO/TO 7620, mhando dzinosvika mazana mana dzemakemikari anoparadza uye emvura akaunganidza ruzivo nezvemhando dzakasiyana dzerabha, uye dzakaratidza mazinga 1-4 kuratidza mwero wekushanda kwawo, uye kukanganisa kwemakemikari anoparadza pamhando dzerabha.
Kudzikira kweVhoriyamu yeGiredhi/% Kukosha kwekudzikisa kuomarara Kukanganisa mashandiro
1 <10 <10 zvishoma kana kwete
2 10-20 <20 diki
3 30-60 <30 yepakati
4 >60 >30 zvakanyanya
4. Kudzivirira mhute yemvura
Rabha reEthylene-propylene rine simba guru rekudzivirira utsi hwemvura uye rinofungidzirwa kuti riri nani pane rekudzivirira kupisa kwaro. Mumhepo inopisa zvikuru ye230℃, chitarisiko cheEPDM chakaramba chisina kuchinja mushure memaawa angangoita zana. Zvisinei, mumamiriro ezvinhu akafanana, rabha refluorine, rabha resilicone, rabha refluorosilicone, rabha rebutyl, rabha renitrile, uye rabha rechisikigo zvakaona kuora kwechitarisiko mushure menguva pfupi.
5. Kudzivirira mvura inopisa zvikuru
Rabha reEthylene-propylene rinodzivirirawo mvura inopisa zvakanyanya, asi rine hukama hwakasimba nehurongwa hwese hwe vulcanization. Rabha reEthylene-propylene rine dimorpholine disulfide uye TMTD senzira ye vulcanization, mushure mekunyudzwa mumvura inopisa zvakanyanya pa125°C kwemwedzi gumi nemishanu, hunhu hwemuchina hunochinja zvishoma, uye huwandu hwekuwedzera hunongova 0.3%.
6. Kushanda kwemagetsi
Rabha reEthylene-propylene rine simba rakanaka rekudzivirira kupisa uye rinodzivirira corona, uye simba rayo remagetsi riri nani kana kuti rakafanana nerabha restyrene-butadiene, chlorosulfonated polyethylene, polyethylene uye cross-linked polyethylene.
7. Kuchinjika
Nekuti hapana zvinhu zvinotsiva polar muchimiro chemamorekuru cherabha re ethylene-propylene, simba rekubatana remorekuru rakaderera, uye cheni yemamorekuru inogona kuchengetedza kuchinjika kwakasiyana-siyana, yechipiri kune rabha re natural negotiable uye butadiene, uye inogona kuramba ichichengetwa patembiricha yakaderera.
8. Kunamatira
Rabha yeEthylene-propylene haina mapoka anoshanda nekuda kwechimiro chayo chemamorekuru uye ine simba shoma rekubatana. Pamusoro pezvo, rabha iri nyore kutumbuka, uye kuzvinamira kwayo uye kubatana kwayo kwakashata.
Nguva yekutumira: Mbudzi-17-2021
