Zvinhu zverabha zvakajairika——hunhu hweEPDM

Zvinhu zverabha zvakajairika——hunhu hweEPDM

Zvakanakira:
Kudzivirira kukwegura kwakanaka kwazvo, kudzivirira mamiriro ekunze, kudzivirira kutonhora kwemagetsi, kudzivirira ngura yemakemikari uye kusimba kwesimba.

Zvakashata:
Kumhanya kunononoka kwekugadzirisa; Zvakaoma kusanganisa nemamwe marabha asina kuguta, uye kunamatira kwega uye kunamatira kwese kwakashata, saka mashandiro ekugadzirisa haana kunaka.

Ningbo Yokey Automotive Parts Co., Ltd inotarisa pakugadzirisa matambudziko emidziyo yerabha yevatengi uye kugadzira mafomura akasiyana emidziyo zvichienderana nemamiriro akasiyana ekushandiswa.

Zvivakwa: ruzivo rwakadzama
1. Kuwanda kwakaderera uye kuzadza kwakawanda
Rubha reEthylene propylene irabha rine density yakaderera ye0.87. Pamusoro pezvo, mafuta akawanda anogona kuzadzwa uye mafiller anogona kuwedzerwa, izvo zvinogona kuderedza mutengo wezvigadzirwa zverabha uye kutsiva mutengo wakakwira werabha isina kugadzirwa yeEthylene propylene rabha. Pamusoro pezvo, kune rabha reEthylene propylene rine kukosha kwakanyanya kweMooney, simba remuviri neremuchina mushure mekuzadza kwakawanda harizoderedzwe 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 mhute yemvura, simba remagetsi, simba rekuzadza mafuta uye kuyerera kwekushisa kwemumba. Zvigadzirwa zverabha reEthylene propylene zvinogona kushandiswa kwenguva yakareba pa120 ℃, uye zvinogona kushandiswa kwenguva pfupi kana nguva nenguva pa150 - 200 ℃. Tembiricha yekushandisa inogona kuwedzerwa nekuwedzera antioxidant yakakodzera. EPDM yakabatana neperoxide inogona kushandiswa mumamiriro ezvinhu akaoma. Kana huwandu hweEPDM muozone huri pa50 pphm uye nguva yekutambanudza iri 30%, EPDM inogona kusvika maawa 150 isina kutsemuka.

3. Kuramba ngura
Nekuda kwekushaikwa kwe polarity uye kusakwana kwe ethylene propylene rabha, ine simba rakanaka rekudzivirira makemikari akasiyana-siyana e polar akadai se alcohol, acid, alkali, oxidant, refrigerant, sipo, mafuta emhuka nemiriwo, ketone ne grease; Zvisinei, haina kugadzikana mumafuta nezvinonhuwira (senge peturu, benzene, nezvimwewo) nemafuta emaminerari. Kushanda kwayo kuchadererawo kana yave kushanda kwenguva refu ne concentrated acid. Mu ISO/TO 7620, data pamusoro pemigumisiro yemakemikari anoda kusvika mazana mana e corrosive gaseous ne liquid pa properties ye rabha dzakasiyana-siyana rinounganidzwa, uye magiredhi 1-4 anotsanangurwa kuratidza migumisiro yawo. Mhedzisiro yemakemikari anoparadza pa properties ye rabha ndeiyi inotevera:

Mhedzisiro yeKudzikira kweVhoriyamu yeGiredhi/% Kuderedza Kuoma kweHuku paZvimiro
1<10<10 Zvishoma kana kuti hapana
2 10-20<20 diki
3 30-60<30 Pakati nepakati
4>60>30 zvakakomba

4. Kudzivirira mhute yemvura
EPDM ine simba guru rekudzivirira kupisa uye inofungidzirwa kuti iri nani pane kupisa kwayo. Mumhepo inopisa zvakanyanya ye230 ℃, chitarisiko hachichinji mushure memaawa angangoita zana. Zvisinei, mumamiriro ezvinhu akafanana, chitarisiko cherabha yefluorine, rabha yesilicon, rabha yefluorosilicone, rabha yebutyl, rabha yenitrile uye rabha yechisikigo zvakaderera zvakanyanya munguva pfupi.

5. Kuramba mvura inopisa zvakanyanya
Rabha reEthylene propylene rinodzivirirawo mvura inopisa zvakanyanya, asi rine hukama hwakanyanya nehurongwa hwese hwe vulcanization. Hunhu hwe ethylene propylene rabha (EPR) yakanyungudutswa ne dimorphine disulfide ne TMTD hwakachinja zvishoma mushure mekunyudzwa mumvura inopisa zvakanyanya ye125 ℃ kwemwedzi gumi nemishanu, uye huwandu hwekuwedzera hwaive 0.3% chete.

6. Kushanda kwemagetsi
Rabha reEthylene propylene rine simba rekudzivirira kupisa kwemagetsi uye rinodzivirira corona, uye hunhu hwaro hwemagetsi hwakanyanya kunaka kana kuti hwakafanana nehwerabha restyrene butadiene, chlorosulfonated polyethylene, polyethylene uye cross-linked polyethylene.

7. Kusasimba
Nekuti rabha ye ethylene propylene haina polar substituents muchimiro chayo chemamorekuru uye simba shoma rekubatana kwemamorekuru, cheni yayo yemamorekuru inogona kuchengetedza kuchinjika kwakasiyana-siyana, yechipiri kune rabha yechisikigo uye rabha ye cis polybutadiene, uye ichiri kukwanisa kuchengetedza patembiricha yakaderera.

8. Kunamatira
Nekuda kwekushaikwa kwemapoka anoshanda muchimiro chemamorekuru erabha re ethylene propylene, simba rekubatana rakaderera, uye rabha iri nyore kupfapfaidza, saka kunamatira kwega uye kunamatira kwese kwakaderera.