Zithini iimpawu zerabha ye-EPDM?

1. Ukuxinana okuphantsi kunye nokuzaliswa okuphezulu
Irabha ye-Ethylene-proplene yirabha ene-curber esezantsi, kunye noxinano lwe-0.87. Ukongeza, inokugcwaliswa ngenani elikhulu leoyile kunye ne-EPDM.
Ukongeza iifilitha kunokunciphisa iindleko zeemveliso zerabha kwaye zenze amaxabiso aphezulu e-Ethylene proplene raw irabha. Kwirabha ye-poplene proplene enexabiso eliphakamileyo le-monenekazi, amandla omzimba kunye noomatshini bokugcwaliswa okuphezulu akunciphiswa kakhulu.

2. Ukunganyangeki
Irabha ye-Ethylene-proplene inesimo sezulu esihle kakhulu, ukuxhathisa ubushushu, ukumelana nobushushu, ukuzinza komoya, iipropathi zombane, ezenziweyo kubushushu begumbi. Iimveliso zerabha-proplene ze-Ethylene-proplene zinokusetyenziswa ixesha elide kwi-120 ° C, kwaye inokusetyenziswa ngokufutshane okanye isetyenziswe ngokufutshane nge-150-200 ° C. Ukongeza i-amotioxididants efanelekileyo inokunyusa ubushushu bayo bokusebenzisa. I-EPDM Rubber Cross-inxibelelene nePeroxide inokusetyenziswa phantsi kweemeko ezinzima. I-EPDM irabha inokufikelela ngaphezulu kwe-150h ngaphandle kokuqhekeka phantsi kweemeko ze-ozone windows 50phm kunye ne-30% yolula.

3. Ukunganyangeki
Kungenxa yokuba irabha ye-Ethylene Proplene ilahle i-vollocy kunye nenqanaba eliphantsi lolwazelelo, linokungaxhathisi okuhle, ii-acids, i-oxidals, i-oyile kunye netoyithi kunye ne-cease. Kodwa inozinzo olugwenxa kwiifility ezinamafutha kunye nezinyibilikisi ezimnandi (ezinjengepetroli, i-Bezene, njlnjl) kunye neoyile yezimbiwa. Intsebenzo iya kuncipha phantsi kwesenzo sexesha elide se-acid egxininisiweyo. Kwi-ISO / ukuya kwi-7620, phantse iintlobo ezingama-400 zeekhemikhali zegesi kunye neekhemikhali ezinamanzi ziqokelele ulwazi ngeempawu ezahlukeneyo zerabha, kunye nefuthe leekhemikhali zabo, kunye nefuthe leekhemikhali zerabha.

Inqanaba levolumu ye-GORT /% yexabiso lokuncitshiswa kwe-Hardy
I-1 <10 <10 incinci okanye hayi
I-2 10-20 <20 incinci
I-3 30-60 <30 ephakathi
4> 60> 30 kakhulu

I-4. Ukuchasana kwe-vapor yamanzi
Irabha-proplene ye-Ethylene ine-ithopber inee-vapor ezigqwesileyo kwaye iqikelelwa ukuba ilunge ngakumbi kunexhathiso lobushushu. Kwi-230 ℃ i-Steam eguqukayo, ukubonakala kwe-EPDM kuhlala kungaguqukanga emva kwe-100h. Nangona kunjalo, phantsi kweemeko ezifanayo, irabha ye-fluorine irabha, irabha ye-silicone, i-fluorosililicilicililicililic, irabha ye-rubber, irabha ye-raber, irabha yendalo, kunye ne-raber yendalo enamava emva kwexesha elincinci.

5. Ukuchasana kwamanzi
Irabha ye-Ethylene-Prophenene ikwaxhathisa ngakumbi kumanzi aqaqambileyo, kodwa inxulumene kakhulu nazo zonke iinkqubo zokungazinzanga. Irabha ye-Ethylene-Proplene ene-dimorphoneline yokuphelisa kwaye i-TMTD yenkqubo yokwahlula-ntathu i-125 ° C kwiinyanga ezili-15, iqondo lokwandiswa kwemigaqo yi-0.3% kuphela.

I-6. Ukusebenza kombane
Irabha ye-Ethylene-proplene ineepropathi eziphezulu zombane kunye nokuchasana kwe-corona, kwaye iipropathi zayo zombane zingcono kune-ralbene-irabha ye-stylene, i-polythylene kunye ne-polyethylene.

7. Ukuguquguquka
Kuba akukho mpahla ye-polar kwi-molecular yerabha-propleune, amandla anemolekyuli anokugcina bhetyelwe kuluhlu olubanzi, olwesibini kuphela kwirabha, kwaye isenokuba igcinwe kumaqondo obushushu asezantsi.

I-8. Ukunamathela
Irabha-proplene yerabha ingena kumaqela asebenzayo ngenxa yesakhiwo sayo semolekyuli kwaye sinamandla aphantsi. Ukongeza, irabha kulula ukuyihlafuna, kwaye ukuzibulala kwayo kunye nokunamathela ngokudibeneyo.