Njira zingapo zodziwika bwino za mphira

1. Kukana kuyesa kunenepa kwapakatikati

Chomalizidwacho chikhoza kutsatiridwa, chonyowetsedwa m'nkhani imodzi kapena zingapo zosankhidwa, zolemera pambuyo pa kutentha ndi nthawi, ndipo mtundu wa zinthu ukhoza kuganiziridwa molingana ndi kusintha kwa kulemera kwake ndi kusintha kwa kuuma.

Mwachitsanzo, kumizidwa mu 100 digiri mafuta kwa maola 24, NBR, fluorine mphira, ECO, CR ali ndi kusintha pang'ono khalidwe ndi kuuma, pamene NR, EPDM, SBR kuposa kawiri kulemera ndi kusintha kuuma kwambiri, ndi kukula kwa voliyumu. ndi zoonekeratu.

2. Kutentha mpweya kukalamba mayeso

Tengani zitsanzo kuchokera kuzinthu zomwe zamalizidwa, kuziyika m'bokosi lokalamba kwa tsiku limodzi, ndikuwona zomwe zimachitika mutakalamba.Kukalamba pang'onopang'ono kumatha kuwonjezeka pang'onopang'ono.Mwachitsanzo, CR, NR, ndi SBR adzakhala brittle pa madigiri 150, pamene NBR EPDM akadali zotanuka.Kutentha kukakwera kufika madigiri 180, NBR wamba idzakhala yolimba;ndipo HNBR idzakhalanso yowonongeka pa madigiri 230, ndipo mphira wa fluorine ndi silikoni akadali ndi elasticity yabwino.

3. Njira yoyaka moto

Tengani chitsanzo chaching'ono ndikuwotcha mumlengalenga.onani chodabwitsacho.

Nthawi zambiri, mphira wa fluorine, CR, CSM alibe moto, ndipo ngakhale lawi lamoto likuyaka, ndi laling'ono kwambiri kuposa NR ndi EPDM.Zoonadi, ngati tiyang’anitsitsa, mmene kuyaka, mtundu, ndi fungo zimatipatsa chidziŵitso chochuluka.Mwachitsanzo, pamene NBR / PVC ikuphatikizidwa ndi guluu, pamene pali gwero lamoto, moto umaphulika ndikuwoneka ngati madzi.Tiyenera kukumbukira kuti nthawi zina guluu woyaka moto koma wopanda halogen amathanso kuzimitsa moto, womwe uyenera kuwonjezeredwa ndi njira zina.

4. Kuyeza mphamvu yokoka yeniyeni

Gwiritsani ntchito sikelo yamagetsi kapena yowerengera yolondola, yolondola mpaka 0.01 gramu, kuphatikiza kapu yamadzi ndi tsitsi.

Nthawi zambiri, mphira wa fluorine ali ndi mphamvu yokoka yayikulu kwambiri, pamwamba pa 1.8, ndipo zinthu zambiri za CR ECO zili ndi gawo lalikulu kuposa 1.3.Zomatira izi zitha kuganiziridwa.

5. Njira yotsika kutentha

Tengani chitsanzo kuchokera kuzinthu zomalizidwa ndikugwiritsa ntchito ayezi wouma ndi mowa kuti mupange malo oyenera a cryogenic.Zilowerereni chitsanzo mu malo otentha otentha kwa mphindi 2-5, mverani kufewa ndi kuuma pa kutentha kosankhidwa.Mwachitsanzo, pa -40 madigiri, kutentha komweko komanso kukana mafuta silika gel osakaniza ndi fluorine mphira amafananizidwa, ndi silika gel osakaniza ndi ofewa.