Qhov tshwj xeeb tshaj plaws thiab paub tau dav siv ntawm lub hwj chim ultrasound hauv dej yog cov nyhuv dispersion. Cov dispersion ntawm ultrasonic tsis nyob hauv cov kua tsuas yog nyob ntawm ultrasonic cavitation ntawm cov kua.
Kev siv cov ultrasonic dispersion tuaj yeem tshem tawm qhov kev xav tau siv emulsifiers. Feem ntau, ultrasonic emulsification tuaj yeem tau txais kab hauv qab 1 μm. Qhov tsim ntawm emulsion no mas vim yog lub zog ultrasonic cavitation ze cov cuab tam dispersion. Tus neeg saib xyuas tshuaj lom neeg tuaj yeem faib cov kab mob paraffin rau hauv dej thiab txoj kab uas hla ntawm qhov dispersion tsawg dua 1μm.
Tuav taw tes ntawm ultrasonic dispersion feem ntau yog me me kev co thiab nce siab. Cov khoom siv ultrasonic dispersion tau siv dav hauv cov zaub mov, roj, khoom siv tshiab, tshuaj lom neeg, txheej txheej, thiab lwm yam.
Cov qauv ntawm kev faib tawm
1. Lub tshuab hluav taws xob (Ultrasonic generator): nws cov peev txheej siab npaum li 90%, thiab nws yog qhov me me thiab qhov pom hauv qhov hnyav; (tseem hu ua ultrasonic tsav zog).
Cov khoom siv ultrasonic dispersion
2. Kev pabcuam ultrasonic, txhawm rau kom tau txais lub zog loj, feem ntau qhov kev co tseev kom raug xaiv raug siab txog li 15kHz, lub tshuab hluav taws xob ultrasonic thiab cov tshuab ua haujlwm txuas lub zog ua haujlwm tsis siv neeg ua ke; (ultrasonic vibrator muaj li ntawm ultrasonic transducer thiab ultrasonic horn).
3. Cuab tam ultrasonic dispersion; (lub cuab yeej ultrasonic lub taub hau txuas nrog lub vibrator).
4. Lub thawv ntim khoom tawg yooj yim. Lub ntsiab cai ua haujlwm ntawm homogenizer, thaum lub tshuab hluav taws xob ultrasonic tso tawm qhov ntsuas hluav taws xob loj, lub zog ultrasonic tau nthuav dav los ntawm cov neeg kho tshuab vibrating cap los ntawm lub vibrator, thiab tom qab ntawd nyob rau hauv qhov kev ua ntawm cov cuab yeej dispersing, nws ua lub zog ua kom muaj zog micro ua. lub thawv.
Cawv lwm yam
Ob yam ua haujlwm txiav txim siab qhov ua haujlwm ntawm kev tawg: ultrasonic kev cuam tshuam lub zog; ultrasonic hluav taws xob lub sijhawm.
Kev ntws tawm ntawm cov kua tshuaj yog Q, qhov sib txawv yog c, thiab thaj chaw ntawm lub phaj hauv qhov ntsuas rov qab yog S. Lub sijhawm nruab nrab t xav tau tshwj xeeb rau qee qhov tshwj xeeb hauv cov kua tshuaj kho kom dhau qhov chaw no: t=c * S / Q. Txhawm rau txhawm rau txhim kho ultrasonic dispersion nyhuv, nws yog qhov tsim nyog los tswj qhov nruab nrab siab p ntawm cov kua kho, qhov kis c, thiab ultrasonic hluav taws xob lub sijhawm t (s).
Ntawv thov cov kev hloov kho
Lub hauv paus ntsiab lus ntawm Ultrasonic Dispersion
Ultrasonic dispersion muaj ntau qhov kev siv hauv ntau lub teb: xws li zaub mov, tshuaj pleev ib ce, tshuaj, tshuaj lom neeg, thiab lwm yam. dispersion (ncua kev kawm), thiab roj-kua dispersion. [3]
Khoom ua kua-dispersion (ncua kev kawm): xws li hmoov emulsion dispersion.
Cov pa roj-ua kom tawg: piv txwv li kev tsim cov pa roj carbon monoxide dej tuaj yeem ua kom zoo dua qub los ntawm CO2 txoj kev nqus los txhim kho kev ruaj khov.
Kev ua kua-kua-dispersion (emulsion): xws li emulsification ntawm ghee los ua lactose; dispersion ntawm cov ntaub ntawv nyoos thaum ua cov kua ntsw, thiab lwm yam.
Ultrasonic dispersion kuj tseem siv tau rau hauv kev npaj ntawm nanomaterials; rau kev kuaj pom thiab soj ntsuam cov khoom noj piv txwv, xws li kev siv ultrasonic dispersion kua theem micro-rho tshuab
