Ultrasonic Roj-Dej Emulsification: Cov Ntsiab Cai, Tus Nqi, Thiab Daim Ntawv Thov

Hauv kev tsim khoom thiab kev ua neej nyob txhua hnub, kev sib xyaw ntawm cov roj thiab dej yog ubiquitous. Txawm li cas los xij, lub ntuj immiscibility ntawm cov roj thiab dej feem ntau cuam tshuam kev siv thev naus laus zis. Qhov tshwm sim ntawm ultrasonic emulsification tshuab tau ua tiav qhov kev cuam tshuam no, ua tiav cov fusion ruaj khov ntawm cov roj thiab dej los ntawm cov txheej txheem ntawm lub cev, nqa cov thev naus laus zis tshiab rau ntau qhov kev lag luam. Kab lus no yuav tshuaj xyuas cov ntsiab cai tseem ceeb ntawm cov roj ultrasonic- dej emulsification kom ntxaws, piav qhia cov laj thawj tseem ceeb rau kev siv cov thev naus laus zis no, qhia txog cov kev lag luam uas nws txhawb nqa, thiab sau cov ntsiab lus ntawm nws qhov zoo.

I. Hauv -Kev Ntsuas qhov tob: Vim li cas Ultrasonic Wave Emulsify Roj thiab Dej?

Txhawm rau kom nkag siab txog cov nyhuv emulsifying ntawm ultrasound, peb yuav tsum xub qhia meej cov ntsiab lus ntawm "emulsification"- uas yog, tsim kom muaj ib qho zoo sib xws thiab ruaj khov dispersion system ntawm ob cov kua dej tsis sib haum (qhov no, roj thiab dej), qhov twg ib qho kua yog sib npaug ntawm qhov sib txawv raws li cov me me. Cov laj thawj tseem ceeb vim li cas ultrasound tuaj yeem ua tiav cov txheej txheem no nyob rau hauv cov nyhuv cavitation nws induces, ntxiv los ntawm cov nyhuv synergistic ntawm txhua yam kev co thiab thermal teebmeem. Cov txheej txheem tshwj xeeb tuaj yeem muab faib ua peb theem tseem ceeb:

 

Thawj theem yog tsim thiab loj hlob ntawm cavitation npuas. Thaum ultrasound siv rau cov roj- dej sib tov, cov kua molecules vibrate hnyav nyob rau hauv lub sij hawm hloov siab ntawm lub suab tsis. Nyob rau hauv lub "phem siab tsis zoo" (txo), me me roj nuclei nyob rau hauv cov kua (xws li yaj gases los yog gases nyob rau hauv lub pores ntawm me me impurities) sai heev nthuav, tsim ntau me me cavitation npuas. Nyob rau hauv lub "zoo siab theem" ​​(txo), cov npuas no yog compressed sai heev, lawv ntim tsis tu ncua shrinking.

 

Qhov thib ob theem muaj npuas tawg thiab tso tawm ntawm lub cev hnyav. Thaum cov npuas raug compressed rau lawv qhov txwv, lawv tawg sai sai, cov txheej txheem siv tsuas yog microseconds tab sis tso tawm lub zog siab heev -xws li qhov kub thiab txias hauv zos (txog ntau txhiab degrees Celsius), siab siab (txog pua pua megapascals), thiab siab - microjets ceev (ntev nrawm mus txog kaum ob ntawm meters). Qhov chaw nyob hauv cheeb tsam no yog qhov tseem ceeb tsav tsheb rau roj-dej emulsification: lub siab- microjets ceev ua zoo li suav tsis txheeb me me "txiab," yuam kom rhuav thiab rhuav tshem cov tee dej loj hauv cov roj lossis dej theem mus rau qhov me me (feem ntau micrometer- lossis txawm nanometer-sized.) dispersed droplets.

 

Qhov thib peb theem yog tsim ntawm ib tug ruaj khov dispersion system. Lub siab - zaus mechanical vibration ntawm ultrasound tsis tu ncua agitates cov roj- dej sib tov, tso cai rau cov tee dej tawg kom sib cais nyob rau hauv lub nruam theem, tiv thaiv kev sib sau sai thiab stratification. Nyob rau tib lub sijhawm, qhov ntsuas kub hauv cheeb tsam tau tsim los ntawm cavitation me ntsis txo cov kua viscosity, ntxiv kev txhawb nqa droplet dispersion thiab sib tov. Yog hais tias ib qho emulsifier ntxiv rau hauv lub cev, lub ultrasound tuaj yeem ua kom nws cov adsorption ntawm cov tee dej, tsim cov yeeb yaj kiab interfacial ruaj khov, ntxiv dag zog rau kev ruaj ntseg ntawm cov emulsion system thiab tso cai rau cov roj - dej sib tov kom nyob twj ywm homogeneous rau lub sijhawm ntev.

II. Kev xaiv tseem ceeb: Vim li cas thiaj siv cov cuab yeej Ultrasonic rau roj-Dej Emulsification?

Ua ntej lub advent ntawm ultrasonic emulsification technology, ib txwm emulsification txoj kev xws li cov neeg kho tshuab stirring thiab siab - siab homogenization feem ntau siv nyob rau hauv kev lag luam. Txawm li cas los xij, nrog kev xav tau ntau ntxiv rau emulsification zoo, kev ua tau zoo, thiab ib puag ncig tus phooj ywg, cov khoom siv ultrasonic tau maj mam dhau los ua kev xaiv zoo dua. Cov laj thawj tseem ceeb yog raws li hauv qab no:

Ua ntej, cov txheej txheem emulsification ib txwm muaj cov kev txwv tseem ceeb. Cov tshuab nplawm cia siab rau kev sib hloov ntawm cov hniav los tsim lub zog shear, tab sis qhov tsis sib xws ntawm cov shear quab yuam ua rau nws nyuaj rau tawg cov tee rau hauv qhov me me, ua rau cov emulsification tsis zoo thiab muaj kev nyiam rau hauv cheeb tsam tshaj - stirring ua rau cov khoom deterioration. High-siab homogenization, thaum tsim cov tee me me, yuav tsum muaj cov cuab yeej siv los tiv thaiv kev kub ntxhov, ua rau muaj kev siv zog ntau, suab nrov, thiab hnav thiab tsim kua muag, ua rau cov nqi kho mob siab. Nws kuj tsis tshua muaj txiaj ntsig ntawm kev tuav cov khoom siab -viscosity.

 

Secondly, ultrasonic emulsification precisely overcomes lub shortcomings ntawm tsoos technologies. Cov nyhuv cavitation ntawm ultrasound generates tsis tshua muaj zog thiab uniformly faib shear quab yuam, yooj yim tawg tee rau hauv micron - lossis txawm nanometer - qhov loj me me, ua rau ntau dua emulsification precision thiab ntau dua thiab ruaj khov emulsion system. Tib lub sijhawm, cov khoom siv ultrasonic siv tsuas yog 1/3 mus rau 1/2 lub zog ntawm siab -siab homogenizers, ua haujlwm nrog cov suab nrov qis, thiab muaj cov qauv yooj yim, uas ua rau hnav tsawg dua thiab txo cov nqi kho. Tsis tas li ntawd, ultrasonic emulsification yog cov txheej txheem maj mam ua tau nyob rau hauv chav tsev kub, zam qhov kev puas tsuaj ntawm tshav kub- cov ntaub ntawv rhiab heev (xws li cov khoom xyaw nquag hauv cov zaub mov thiab tshuaj pleev ib ce) tshwm sim los ntawm qhov kub thiab txias, yog li nthuav nws qhov kev siv.

 

Thaum kawg, ultrasonic emulsification muab kev ua haujlwm yooj yim dua. Los ntawm kev kho qhov tsis xws li lub zog ultrasonic, zaus, thiab lub sijhawm ua haujlwm, qhov loj ntawm emulsion tee dej thiab kev ruaj ntseg ntawm emulsion system tuaj yeem tswj tau qhov tseeb, yoog raws cov kev xav tau ntawm emulsification ntawm cov khoom sib txawv. Tib lub sijhawm, cov khoom siv ultrasonic tuaj yeem ua tiav cov khoom lag luam tas mus li nrog rau cov khoom tsim tawm, hloov mus rau qhov sib txawv ntawm cov xwm txheej ntau lawm thiab nthuav tawm muaj zog yoog raws cov ntaub ntawv, ua tiav cov emulsification zoo ntawm ob qho tib si qis - viscosity lub teeb roj thiab siab - viscosity hnyav roj.

 

III. Kev Txhim Kho Kev Lag Luam: Yam kev lag luam twg puas Ultrasonic Roj-Kev Txhawb Dej Emulsification?

Ultrasonic roj-dej emulsification technology, nrog rau nws cov tshwj xeeb zoo, tau dav nkag mus rau ntau yam lag luam, ua ib tug tseem ceeb technology tsav kev lag luam kev txawj ntse txawj tej yam ntxiv thiab txhim kho cov khoom zoo. Cov kev lag luam tseem ceeb uas nws txhawb nqa suav nrog: kev ua zaub mov, tshuaj pleev ib ce, tshuaj, petrochemicals, coatings thiab inks, thiab lub zog tshiab. Hauv cov kev lag luam no, roj-dej emulsification yog ib qho ntawm cov txheej txheem tseem ceeb, thiab kev siv cov tshuab ultrasonic zoo txhim kho kev tsim khoom thiab cov khoom sib tw.

 

IV. Daim ntawv thov Scenarios: Daim ntawv thov tshwj xeeb ntawm Ultrasonic Roj-Dej Emulsification

Ua ke cov kev lag luam uas tau hais los saum no, cov roj ultrasonic-dej emulsification muaj ntau yam kev siv tshwj xeeb, npog ntau qhov chaw ntawm kev tsim khoom thiab lub neej txhua hnub:

Hauv kev lag luam khoom noj khoom haus, nws tsuas yog siv rau cov khoom siv mis nyuj (xws li homogenization thiab emulsification ntawm mis nyuj thiab yogurt los txhim kho kev ntxhib los mos), dej haus (xws li emulsification ntawm roj- muaj cov dej haus thiab cov kua txiv hmab txiv ntoo los tiv thaiv kev sib cais), condiments (xws li emulsification ntawm nyias hnav khaub ncaws thiab mayonnaise kom zoo zoo li cov txheej txheem emulsification), thiab stabilization (xws li emulsification) ntawm cov roj sib xyaw kom zoo dua). Nws kuj tseem siv tau rau emulsification thiab dispersion ntawm cov khoom noj khoom haus additives, xws li uniformly dispersing rog-soluble vitamins thiab flavorings nyob rau hauv aqueous tov los txhim kho kev siv additives.

 

Hauv kev lag luam tshuaj pleev ib ce, nws yog ib qho ntawm cov thev naus laus zis tseem ceeb rau kev tsim cov khoom tu tawv nqaij thiab pleev xim. Piv txwv li, ultrasonic emulsification yog siv nyob rau hauv lub emulsification ntawm lub ntsej muag cream thiab tshuaj pleev ib ce (ib tug sib tov sib xyaw cov roj thiab dej kom ib tug du, yooj yim absorbed zoo nkauj), tshuaj pleev thaiv hnub (ib tug sib npaug zos tshuaj pleev thaiv hnub cov khoom xyaw los txhim kho lub hnub tiv thaiv), thiab pleev cov khoom xws li lipsticks thiab eyeshadows (kom paub tseeb tias ib tug du thiab ruaj khov khoom zoo nkauj). Tsis tas li ntawd, nyob rau hauv kev tsim cov tshuaj zawv plaub hau thiab cov tshuaj txias, ultrasonic emulsification tso cai rau cov roj txawm tawg -raws li cov khoom xyaw txias, txhim kho kev ntxuav thiab txias.

 

Hauv kev lag luam kws tshuaj, nws yog siv los tsim cov tshuaj formulations. Piv txwv li, nws yog siv nyob rau hauv emulsification ntawm cov roj- cov tshuaj soluble (hloov cov rog- cov tshuaj soluble rau hauv emulsions los txhim kho cov tshuaj solubility thiab bioavailability), kev npaj cov tshuaj intravenous emulsions (yuav tsum tau uniform thiab me me droplet ntau thiab tsawg los xyuas kom meej cov tshuaj muaj kev ruaj ntseg), thiab tshuaj pleev (txhim kho nyob rau hauv ib tug sib sib zog nqus tshuaj tiv thaiv). Tsis tas li ntawd, nyob rau hauv lub extraction ntawm tsoos suav tshuaj, ultrasonic emulsification yuav pab tau nyob rau hauv lub extraction ntawm rog-soluble active khoom xyaw, txhim kho extraction efficiency.

 

Nyob rau hauv kev lag luam petrochemical, nws yog siv rau hauv cov roj crude extraction thiab ua (xws li, emulsifying crude roj nrog dej los tsim ib tug emulsion, txo cov roj crude viscosity, thiab kev txhim kho extraction thiab tsheb thauj mus los efficiency), oily wastewater kho (sib cais cov roj los ntawm cov dej khib nyiab los ntawm emulsification thiab demulsification txheej txheem los purify cov dej khib nyiab sib txawv), thiab cov roj lubricating sib txawv. formulate high-kev ua tau zoo lubricants).

 

Hauv kev lag luam coatings thiab inks, nws yog siv los tsim cov dej-raws li txheej thiab inks. Los ntawm ultrasonic emulsification, roj-raws li resins thiab pigments yog uniformly dispersed nyob rau hauv dej los tsim ib tug ruaj khov dej-raws li system, hloov ib txwm hnyav hnyav-raws li coatings thiab inks, txo VOC (volatile organic compound) emissions, thiab ua tau raws li kev tiv thaiv ib puag ncig. Ib txhij, emulsified coatings thiab inks muaj kev ntxhib los mos ntau dua, zoo txheej txheej, thiab txhim kho cov khoom zoo thiab kev ua tau zoo.

 

Hauv kev lag luam hluav taws xob tshiab, nws yog siv los tsim cov biodiesel. Nyob rau hauv kev npaj ntawm biodiesel, zaub roj los yog tsiaj rog yuav tsum tau emulsified thiab tov nrog cawv xws li methanol rau transesterification. Ultrasonic emulsification tuaj yeem ua kom qhov sib xyaw ua ke ntawm cov tshuaj tiv thaiv kab mob, txhim kho cov tshuaj tiv thaiv, txo cov tshuaj tiv thaiv kub thiab lub sij hawm, thiab txhim kho cov txiaj ntsig thiab zoo ntawm biodiesel.

V. Cov txiaj ntsig zoo: Tus nqi tshwj xeeb ntawm Ultrasonic Roj-Dej Emulsification

 

Piv nrog rau cov emulsification technologies ib txwm siv, ultrasonic roj -dej emulsification muaj irreplaceable zoo, uas yuav muab sau tseg raws li nram no:

Ua ntej, siab emulsification precision thiab muaj zog stability. Cov nyhuv cavitation ntawm ultrasound tuaj yeem rhuav tshem cov tee mus rau micron lossis txawm nanometer nplai, uas ua rau muaj qhov system emulsion nrog qhov sib txawv heev. Tsis tas li ntawd, cov tee me me muaj qhov loj ntawm thaj chaw tshwj xeeb. Yog tias muaj emulsifier ntxiv, cov yeeb yaj kiab interfacial ruaj khov tuaj yeem tsim tau sai, tiv thaiv kev sib sau ua ke thiab stratification, thiab txuas lub txee lub neej ntawm emulsion system.

 

Thib ob, kev siv hluav taws xob tsawg thiab tus nqi qis. Cov cuab yeej siv ultrasonic tsuas yog siv li ib nrab ntawm lub zog ntawm siab -siab homogenizers, tsis tiv taus siab thaum lub sijhawm ua haujlwm, muaj kev hnav thiab tsim kua muag tsawg, thiab muaj cov nqi kho mob qis dua li cov khoom siv niaj hnub. Tsis tas li ntawd, ultrasonic emulsification txo tus nqi ntawm emulsifier siv (feem ntau yog 30% -50%), ntxiv txo cov nqi raw khoom.

 

Thib peb, nws yog ib qho yooj yim rau kev khiav lag luam thiab dav adaptable. Ultrasonic emulsification tuaj yeem ua tau nyob rau hauv chav tsev kub, zam kev puas tsuaj ntawm tshav kub- cov ntaub ntawv rhiab heev los ntawm qhov kub thiab txias, ua rau nws haum rau qhov kub thiab txias - kev lag luam rhiab heev xws li zaub mov, tshuaj pleev ib ce, thiab tshuaj. Nws kuj muaj zog adaptability rau viscosity thiab concentration ntawm cov ntaub ntawv, ua tau zoo emulsification rau ob qho tib si qis - viscosity kua thiab siab - viscosity pastes, thiab tuaj yeem hloov kho raws li cov kev xav tau ntawm cov khoom sib txawv los ntawm kev kho qhov ntsuas.

 

Hauv cov ntsiab lus, cov roj ultrasonic-dej emulsification technology, nrog nws cov kev ua haujlwm tshwj xeeb thiab cov txiaj ntsig tseem ceeb, tau dhau los ua cov cuab yeej thev naus laus zis rau ntau lub lag luam. Nws tsis tsuas yog daws qhov kev sib tw ntawm lub ntuj immiscibility ntawm cov roj thiab dej, tab sis kuj tseem ua rau cov kev lag luam muaj feem xyuam rau kev ua haujlwm siab, kev tiv thaiv ib puag ncig, thiab kev ua haujlwm siab. Nrog kev hloov kho thev naus laus zis tas mus li, kev ua haujlwm ntawm cov khoom siv ultrasonic emulsification yuav raug txhim kho ntxiv, thiab nws cov chaw thov yuav txuas ntxiv nthuav dav, nqa lub zog tshiab rau kev lag luam ntau dua.