Npaj rau Kev Ntsuas Kev Ncaj Ncees
Ua ntej kev ntsuam xyuas kev ncaj ncees, nws yog ib qho tsim nyog los xyuas kom meej tias cov khoom siv lim dej tau ua tiav tag nrho. Cov txheej txheem ntawm phau ntawv infiltration yog feem ntau: muab cov khoom lim rau hauv cov tshuaj infiltration thiab tag nrho infiltrate rau li 20 feeb, thiab nqa cov khoom lim txhua 3 feeb kom tshem tawm cov npuas npuas kom lub atmospheric siab yuav nias lub infiltration hydraulic siab rau hauv membrane pores. Cov khoom infiltration kua tsis yog hais txog dej, los yog ib yam khoom los yog cov txheej txheem kua, tab sis ib tug hnyav. Tom qab infiltration ntawm cov khoom, qhov kev ntsuam xyuas kev ncaj ncees ntawm tib cov khoom lim yuav txawv. Yog vim li cas rau lawv qhov sib txawv yog qhov infiltration ntawm cov khoom. Qhov saum npoo nro coefficient ntawm cov kua yog txawv. Lub solubility thiab diffusivity ntawm cov roj sim hauv cov kwj deg kuj tuaj yeem ua rau cov txiaj ntsig tsis sib xws. Rau cov txheej txheem no, cov kua dej pom zoo yog fluorocarbon, tsis muaj ethanol, lossis 60 feem pua isopropanol thiab dej sib tov. Vim lub molecular attraction ntawm lub interfacial nro, cov infiltrating kua yog ruaj khov kho nyob rau hauv lub microporous khoob ntawm cov khoom lim.
Bubble point testing kev ntsuam xyuas kev ncaj ncees
Thaum cov roj siab ntawm lub siab siab ntawm cov qauv yog siab dua lub siab capillary thiab qhov nro ntawm cov qauv membrane pores, nws raug tso tawm los ntawm lwm sab ntawm cov qauv, thiab cov kua infiltrating hauv capillary pores yuav raug nias. tawm los ntawm cov roj siab mus rau sab qis ntawm cov qauv. Lub siab ntawm sab yog suav tias yog lub npuas taw tes siab, thiab qhov tshwm sim ntawm lub sijhawm no yuav tsum yog thawj cov npuas txuas ntxiv hauv cov qauv.