Puas yog FKM roj hmab tiv taus kerosene?

FluororubberRoj Hmab FkmFeem ntau muaj kerosene tsis kam, tshwj xeeb tshaj yog nyob rau nruab nrab kub (hais txog -20} {{2} {2}

 

1. kerosene tsis kam
Fluororubber tau ua fluorububer tau tiv thaiv zoo tshaj plaws rau cov roj ntxhia feem ntau (suav nrog CF txoj kev ruaj khov thiab yaig los ntawm roj .

Nyob rau hauv chav tsev kub, cov kav dej fluororubber feem ntau tsis ua kom pom tseeb o, kev ua kom tsis pom kev zoo lossis ua haujlwm thaum lub sij hawm ntev {}}

 

2.} Kev ceev faj
Temperature effect: If kerosene is exposed to high temperature (>150 Qeb) lossis kev ua kom siab siab, lub permeeneability ntawm kerosene tej zaum yuav nce. nws yog ib qho tsim nyog los xaiv cov fluorine siab (xws li FKM hom 3) lossisCov roj hmab perfluoroether(FFKM) txhawm rau txhim kho kev tiv thaiv .

Additive Assuction: qee cov kerenedes muaj cov leej txiv leej ntoo, kua qaub lossis lwm yam ntxiv roj hmab . Qhov tshwj xeeb kerosition yuav tsum tau lees paub.

Cov kev tawm suab ntev: Kev sib cuag ntev ntev yuav ua rau kev hloov me me me me (ntim hloov<10%), which requires actual testing and verification.

 

3. sib piv nrog lwm rab phom
Zoo dua nBr (nitrile roj hmab): nbr yog yooj yim rau swell hauv kerosene, thiab fluororubber yog qhov haum hnyav rau cov chaw hnyav.

Qis dua rauFfkm: Perfluoroether rubber has better oil resistance, but the cost is extremely high, and it is only considered when ultra-high temperature (>200 degree) yuav tsum tau .

 

4. Daim ntawv thov cov lus qhia
Fluororubber tau siv dav hauv cov ntsaws ruaj ruaj (xws li cov hlua O-Rings thiab roj ntsaws ruaj ruaj thiab tsim nyog rau kev sib cuag nrog kev sib chwv nrog Kerosene.

Yog tias cov haujlwm ua haujlwm yog huab (xws li kub + tshuaj quav (ovm D471 tus qauv) Pom zoo .