Mgwirizano wamba wokulitsa mphira uli ndi magawo azinthu komanso magwiridwe antchito

Zida zazikulu zamphira yowonjezera yowonjezerandi: silika gel, mphira nitrile, neoprene,Mtengo wa EPDM, mphira wachilengedwe, mphira wa fluoro ndi mphira wina.

Thupi katundu yodziwika ndi kukana mafuta, asidi, alkali, abrasion, mkulu ndi otsika kutentha.
1. Labala wachilengedwe:

Zolumikizira za mphira zopanga zimakhala ndi kutsika kwambiri, kulimba kwakutali, kukana kwabwino komanso kukana chilala, ndipo zitha kugwiritsidwa ntchito pa kutentha koyambira -60 ℃ mpaka +80 ℃. Sing'anga ikhoza kukhala madzi ndi gasi.
2. Mpira wa Butyl:

zolumikizira mphira zosavala zimagwiritsidwa ntchito pamapaipi afumbi ndi makina amchenga. Mgwirizano wa rabara wosamva kuvala komanso wosagwirizana ndi dzimbiri ndi gulu la mphira laukadaulo lomwe limapangidwira machitidwe a desulfurization. Ili ndi kukana kwabwino, asidi ndi alkali kukana, kukana kwa dzimbiri, ndipo imatha kulipira bwino kukula kwa axial, kukulitsa kwa radial, kusamuka kwa angular ndi ntchito zina za mapaipi a desulfurization.
3. Chloroprene rabala (CR):

Mgwirizano wa rabara wosamva madzi a m'nyanja, womwe uli ndi mpweya wabwino kwambiri komanso kukana kwa ozoni, chifukwa chake kukana kwake kukalamba kumakhala kwabwino kwambiri. Kutentha kogwira ntchito: pafupifupi -45 ℃ mpaka +100 ℃, ndi madzi a m'nyanja monga sing'anga yayikulu.
4. Rubber wa Nitrile (NBR):

Mafuta osagwirizana ndi mphira. Makhalidwe ake ndi kukana bwino kwa mafuta. Ntchito kutentha osiyanasiyana: pafupifupi -30 ℃ kuti +100 ℃. Chogulitsa chofananira ndi: cholumikizira mphira chosagwira mafuta, chokhala ndi zimbudzi ngati sing'anga.
5. Ethylene propylene diene monomer (EPDM):

Zolumikizira za mphira za Acid ndi alkali zimagwiritsidwa ntchito kwambiri, zomwe zimadziwika ndi kukana kwa asidi ndi alkali, zomwe zimakhala ndi kutentha pafupifupi -30 ℃ mpaka +150 ℃. Lolingana mankhwala: asidi ndi alkali kusamva mphira olowa, sing'anga ndi zimbudzi.

Fluorine rabara (FPM) yolimbana ndi mphira wolumikizana ndi kutentha kwambiri ndi njira yopangira ulimi ya elastomer yopangidwa ndi copolymerization ya fluorine yomwe ili ndi ma monomers. Makhalidwe ake ndi kutentha kwambiri kukana mpaka 300 ℃.

Kugawika ndi machitidwe

Pankhani ya kagwiritsidwe ntchito, pali mitundu itatu ya rabara ya EPDM (makamaka yofunikira kuti madzi asasunthike, kukana kwa nthunzi wamadzi, komanso kukana kukalamba), mphira wachilengedwe (makamaka mphira womwe umangofunika kukhazikika), mphira wa butyl (mphira womwe umafunikira kusindikiza bwino). ), rabala ya nitrile (rabala yomwe imafuna kukana mafuta), ndi silikoni (rabala ya chakudya);
Kusindikiza mphira kumagwiritsidwa ntchito kwambiri m'mafakitale monga antistatic, retardant flame, electronics, chemical, pharmaceutical, and food.

Zida zamalumikizidwe a mphira zimagawidwa m'mitundu yosiyanasiyana kutengera sing'anga yomwe imagwiritsidwa ntchito, monga mphira wa chloroprene, mphira wa butyl, fluororubber, mphira wa EPDM, ndi mphira wachilengedwe. Malumikizidwe a mphira osinthika amagwiritsidwa ntchito kwambiri polumikizira mapaipi osiyanasiyana, okhala ndi magwiridwe antchito a mayamwidwe odabwitsa, kuchepetsa phokoso, komanso kubweza chipukuta misozi.

Ntchito yolumikizira mphira imasiyanasiyana malinga ndi zomwe zimagwiritsidwa ntchito. Kusiyanitsa kwa magwiridwe antchito kumaphatikizanso mphira wapadera wa fluororubber ndi silikoni, womwe umatha kukana, kukana kupanikizika, komanso kukana kutentha kwambiri. Imakhala ndi kukana kwa mafuta, kukana kwa asidi ndi alkali, kuzizira ndi kutentha, kukana kukalamba, ndi zina zotero. Ponena za makonda, mphira akhoza kupangidwa kukhala mitundu yosiyanasiyana ya mphira yowonjezera yowonjezera.