Nano haismuaj me me particle loj, siab nto zog, thiab muaj ib tug nyiam spontaneously agglomerate.Lub hav zoov ntawm agglomeration yuav cuam tshuam rau qhov zoo ntawm nano hmoov.Yog li ntawd, yuav ua li cas los txhim kho cov dispersion thiab stability ntawm nano hmoov nyob rau hauv kua nruab nrab yog ib qho tseem ceeb heev cov ntsiab lus tshawb fawb.
Particle dispersion yog ib qho kev kawm tshiab uas tsim nyob rau xyoo tas los no.Lub thiaj li hu ua particle dispersion yog hais txog cov txheej txheem ntawm kev sib cais thiab dispersing hmoov hais nyob rau hauv ib tug kua nruab nrab thiab uniformly faib thoob plaws hauv lub kua theem, uas feem ntau muaj peb theem ntawm wetting, de-agglomeration thiab stabilization ntawm dispersed hais.Kev ntub dej yog hais txog cov txheej txheem maj mam ntxiv cov hmoov rau lub vortex tsim nyob rau hauv qhov sib tov, kom cov huab cua los yog lwm yam impurities adsorbed rau saum npoo ntawm cov hmoov yog hloov los ntawm cov kua.De-agglomeration yog hais txog dispersing aggregates ntawm loj particle loj rau hauv me me hais los ntawm txhua yam los yog super-loj txoj kev.Stabilization hais txog kev ua kom ntseeg tau tias cov hmoov hmoov muaj qhov sib txawv ntawm cov kua dej mus ntev.Raws li txoj kev sib txawv dispersion, nws tuaj yeem muab faib ua lub cev dispersion thiab tshuaj dispersion.Ultrasonic dispersion yog ib qho ntawm lub cev dispersion txoj kev.
Ultrasonic dispersiontxoj kev: Ultrasound muaj cov yam ntxwv ntawm luv wavelength, kwv yees li ncaj propagation, thiab yooj yim zog concentration.Ultrasound tuaj yeem nce cov tshuaj tiv thaiv kab mob, txo lub sijhawm cov tshuaj tiv thaiv, thiab ua kom cov kev xaiv ntawm cov tshuaj tiv thaiv;Nws tuaj yeem ua rau muaj tshuaj lom neeg tsis tuaj yeem tshwm sim yam tsis muaj ultrasonic tsis muaj.Ultrasonic dispersion yog muab tso ncaj qha rau particle ncua kev kawm ntawv nyob rau hauv lub super-tiam teb, thiab kho nws nrog ultrasonic tsis ntawm tsim nyog zaus thiab lub zog.Nws yog ib txoj kev siv siab dispersion.Lub mechanism ntawm ultrasonic dispersion feem ntau ntseeg tau hais tias muaj feem xyuam rau cavitation.Kev nthuav tawm ntawm ultrasonic tsis siv qhov nruab nrab raws li tus neeg nqa khoom, thiab muaj lub sijhawm hloov pauv ntawm qhov zoo thiab tsis zoo siab thaum lub sijhawm nthuav tawm ntawm ultrasonic tsis nyob hauv nruab nrab.Qhov nruab nrab yog nyem thiab rub nyob rau hauv alternating zoo thiab tsis zoo pressures.Thaum ultrasonic nthwv dej nrog ib tug txaus loj amplitude yog siv rau cov kua nruab nrab kom muaj ib tug tas li tseem ceeb molecular nrug, cov kua nruab nrab yuav tawg thiab tsim microbubbles, uas ntxiv loj hlob mus rau hauv cavitation npuas.Ntawm qhov tod tes, cov npuas no tuaj yeem rov ua dua hauv cov kua nruab nrab, lossis lawv tuaj yeem ntab thiab ploj;Lawv kuj tuaj yeem tawg los ntawm theem resonance ntawm ultrasonic teb.Kev xyaum tau ua pov thawj tias muaj qhov tsim nyog super-tiam zaus rau kev tawg ntawm kev ncua, thiab nws cov nqi nyob ntawm qhov loj me ntawm cov khoom tshem tawm.Vim li no, hmoov zoo, tom qab lub sij hawm ntawm superbirth, nres rau qee lub sij hawm thiab txuas ntxiv superbirth kom tsis txhob overheating.Txias nrog huab cua lossis dej thaum yug me nyuam kuj yog ib txoj hauv kev zoo.