1 kumagame daSPGkumfa

“SPG"kumfa" ne irin cewa matsin lamba gas dagaSPGHanyar warwatsa daga cikin micropores na membrane; Gabaɗaya, ƙananan kumfa a cikin ruwa suna kira "ƙananan kumfa", girman su ne1-100μmThe kumfa da ake kira "micron kumfa", ƙasa da1μmAna kiran kumfa ta "nano kumfa".

SPGThe kumfa ne siffar ta hanyar canje-canjeSPGThe aperture na membrane don canza girman kumfa, kuma dace da samar da mafi girma mm-grade kumfa daga micro kumfa; Bugu da ƙari,SPGKumfa shine "hanyar samarwa mai tsayayye sosai" wanda ba ya buƙatar kwararar ruwa mai ƙarfi ko matsin lamba na ruwa kanta, yana iya samar da ƙananan kumfa ba tare da lalata ƙwayoyin cuta da manyan kwayoyin halitta a cikin ruwa ba, ko amfani da ka'idar dakatar da kumfa.

biyuSPGMatsin lamba na kumfa

SPGMatsin lamba na kumfa na membrane ya bambanta sosai tare da canjin aperture, da karamin aperture, da matsin lamba na samar da kumfa ne mafi girma, da matsin lamba tare daSPGMatsin lamba na "kumfa" wanda ruwa ke fitarwa a cikin ramin membrane daidai ne, ana iya lissafa shi.

PB= 2γ ●cosθ/ R

PB: kumfa maki matsin lamba;

γ: surface tashin hankali tsakanin gas da ruwa

θ: Touch kusurwa tsakanin membrane surface da ruwa mataki.

R：SPGPore radius

Teburin da ke ƙasa da zane-zane sun lissafa matsin lamba lokacin da iska ke kumfa a cikin ruwa.(γ= 72.75mN/m、θ=30°)

●SabodaSPGModules na musamman(Fixed kayan aiki)kasancewar mu shawarar amfaniSPGmembrane diameter ne0.3μmsama da,A lokaci guda matsin lambaiyasarrafawa aƙasa da1MPaƙasa; kumfamatsin lambakasancewatareSPGBayani na module yayin daYa faruCanjiKuma zaiSPGAn canza aperture.

●Babban canji na matsin lamba ya dogara da surface tashin hankali da kuma viscosity na ruwa da aka yi amfani da；The ƙananan surface tension, matsin lambakawaiƙasa.

●Ƙididdigar da ke sama shine matsin lamba da ake buƙata don matsawa ruwa a cikin porous，Da zarar ruwa da aka extruded, gas ya wuceSPGPores, kumfa zai samar a ƙarƙashin ƙananan matsin lamba；Da zararMicroRuwa a cikin rami da aka extruded, shi zaikafaSmall kumfadagaSPGPorestsakiyaCi gabaLand samarwa，Sa'an nanAn yi daidaitawa ta hanyar rage matsin lamba yayin bincika yanayin kumfa.

●SPGGasThe Bubble Mechanism ne a lokacin daSPGsurface(Haɗa da porosity ciki)Lokacin da ruwa ya nutse, saboda tasirin surface tashin hankali, gas aSPGsurface(fitarwa)kafa a kan“kumfa”, kara dangantaka kusurwa da gas，Saboda haka, idan akwai abubuwa da ke hana ruwa da aka haɗa daSPGA kan membrane, surface yanayin ba ya shafi da ruwa, ba za a iya samunIdealThe performance, zai haifar da samar da babban kumfa.

ukuDandancin SPG membrane aperture da kuma kumfa size

SPGGasBubble siffar ta hanyar canjiSPGmembrane aperture don sarrafa girman kumfa，bisaKukizakiDoctoral bincike a lokacin da0.3 wt%dagaSDS(anion surfactants)Ƙara ruwa, akwai rahotanniDp(Girman kumfa)=Dm (SPGmembrane diameters)x8.6，Duk da haka kumfa ne sosai m, an ce lokacin da kumfa size ne50μmLokacin da kananan kumfa shrinks kansa saboda matsin lamba na ciki，Maimakon haka, babban kumfa zai faɗa，Saboda haka ainihin girman kumfa ya dogara da nau'in ruwa da aka yi amfani da shi(surface tashin hankali)Irin gas da aka yi amfani da shi(Easy narkewa)samar da muhalli(membrane na'urar surfacematsin lamba, da dai sauransu)Da kuma lokacin zama a cikin ruwa.

Saboda hakaDp = DmxN，Muna ganin ya zama dole a tantance kowane dangantaka bisa ga manufar amfani da kuma hanyar amfani，Girman kumfa ya shafi sosai da gas ruwa surface tashin hankali idan surface tashin hankalifiye daBabban kuma kumfafiye daBabban, idan an ƙara surfactants rage surface tashin hankali a cikin ruwa koMaiGiya yana da sauƙi don samun ƙananan kumfa.

▲ SPGmembrane diameters(Dm)Za a iya sarrafa kumfa diamita(Dp)： Dm large=Dp large, Dm small=Dp small

▲Gas ruwa surface tashin hankali：Babban=High matsin lamba= DpBabban, ƙaramin=Low matsin lamba= Dpƙananan

▲Buffing gudun：Dpƙarami,DpBabban sauri

▲Gas ruwa lamba yankin(Daidai girman kumfa)：Dpƙananan=BabbanDpBabban=ƙananan

▲Micro kumfa da kuma mm kumfa ne m kuma ba zai ci gaba da wani girma：Dp 50umƙasa=shrinkage,Dp 50umsama=fadada

4.yawan kumfa samar

AinihinSPGMafi kyau kumfa samar yanayin sarrafa ta hanyar matsin lamba，Wannan saboda damuwasaukaYa faru aSPGaperture na membranecikiSaboda haka, gas gudun za a iya sarrafa kawai ta hanyar matsin lamba；A wannan lokacin yawan gas shiga ya dogara da ruwa da gas da aka yi amfani da, amma tare daSPGEffective na membraneGasBubble yankin daidai，Idan ka biyu amfaniSPGtsawon membrane(Yankin)Yawan kumfa da aka samar zai ninka sau biyu.

AmfaniSPGIrin membrane: filimtubaφ10mm，tsawon(Effective tsawon)L105mm

*Ko da haɓaka matsin lamba don haɓaka kwarara, babban kumfa ne kawai zai bayyana, ba zai samar da ƙananan kumfa ba.

5 kumacikiMatsa hanyarda wajeMatsa hanyar

Yi amfani da high karfi tube iri10mmSPGfilimtubaakwai“matsin lamba na ciki”da“matsin lamba na waje”Biyu amfani, bisa gaSPGFixing hanyoyin membrane daSPGƙarfin da aka samo daga bututun siffar,ainihinMatsin lamba na aiki ya bambanta sosai.

matsin lamba na ciki matsin lamba na waje

Gas dagaSPGmatsin lamba a ciki surface na bututun, samar da kumfa a waje surface，Gas dagaSPGmatsin lamba waje surface na bututun, samar da kumfa a ciki surface,

Yana da siffar cewa kumfa ne sauki warwatsa a cikin ruwa yayin da ruwa baStreammotsi. Ya zama dole a jigilar da ruwa zuwa cikin bututun bututun, ruwa yana gudana a cikin bututun.

*1:Matsakaicin matsin lamba ya bambanta dangane da kayan da aka yi amfani da su.

*2:a cikin2shafi“GasMatsin lamba na kumfa”Matsakaicin, ƙayyade bisa amfani da matsin lambaSPGThe shawarar aperture. Ana iya amfani da ƙananan ruwa lokacin da ake amfani da ruwa mai ƙananan tashin hankaliSPGDiameter daga.