Hauv kev tsim cov emulsion, kev tswj xyuas zoo ncaj qha txiav txim siab qhov ua tau zoo ntawm cov khoom, lub sijhawm khaws cia, thiab kev txaus siab ntawm cov neeg siv khoom. Ib qho ntawm cov yam ntxwv tseem ceeb tshaj plaws hauv cov txheej txheem no yogemulsion viscosity; txawm tias qhov kev hloov pauv me me hauv viscosity tuaj yeem ua rau muaj teeb meem xws li kev sib cais theem, kev ntxhib los mos tsis sib xws, lossis kev siv tsis tiav.
Cov kev daws teeb meem no tsom mus rau qhov yuav ua li casCov ntsuas emulsion inlinedaws cov teeb meem thoob plaws hauv kev tswj cov txheej txheem, xyuas kom meej tias muaj kev sib xwsemulsion viscosityhauv kev tsim khoom tas mus li thiab tig kev tswj xyuas zoo rau hauv kev tswj hwm cov txheej txheem ua ntej.
Cov Emulsions yog dab tsi?
Ib qho emulsion yog ib qho sib xyaw ua ke ntawm ob lub kua uas tsis sib xyaw (piv txwv li, roj thiab dej), qhov twg ib qho kua (theem uas tawg) raug rhuav ua cov tee dej me me thiab dai rau hauv lwm qhov (theem uas txuas ntxiv mus). Qhov kev ruaj khov ntawm qhov sib xyaw no vam khom cov emulsifiers—cov tshuaj uas txo qhov nro ntawm ob theem thiab tiv thaiv cov tee dej sib sau ua ke.
Cov yam ntxwv tseem ceeb ntawm cov emulsions uas khi ncaj qha rauemulsion viscositysuav nrog:
- Cov qauv theem: Qhov sib piv ntawm cov khoom tawg mus rau theem txuas ntxiv cuam tshuam ncaj qha rau viscosity (piv txwv li, cov roj ntau dua hauv cov roj-dej emulsion nce ntxivroj dej emulsion viscosity).
- Qhov loj ntawm cov tee dejCov tee dej me me ua rau muaj kev sib txhuam ntau dua ntawm cov theem, ua rau muaj viscosity siab dua; cov tee dej loj dua, sib sau ua ke qis viscosity thiab tsis ruaj khov ntawm lub teeb liab.
- Hom emulsifier thiab concentrationCov tshuaj emulsifiers sib txawv (piv txwv li, surfactants, polymers) hloov pauv cov txheej interfacial nyob ib puag ncig cov tee dej, uas ua rau hloov pauv cov khoom ntws ntawm emulsion (thiab yog li nws cov viscosity).
Hom Emulsions
Kev Nkag Siabcov hom emulsionyog qhov tseem ceeb rau kev xaiv qhov yogemulsion viscometer, vim txhua hom muaj tus cwj pwm viscosity thiab cov kev cai tsim khoom tshwj xeeb. Cov kev faib tawm feem ntau suav nrog:
Los ntawm Theem Sib xyaw
- Cov roj-hauv-Dej (O/W) EmulsionsCov theem txuas ntxiv mus yog dej, thiab cov theem tawg yog roj (piv txwv li, mis nyuj, cov tshuaj pleev ntsej muag). Cov emulsions no feem ntau muaj qis duaroj dej emulsion viscositypiv rau cov hom W/O, vim tias dej tsis nplaum ntau dua li feem ntau cov roj.
- Cov dej-hauv-roj (W/O) EmulsionsCov theem txuas ntxiv mus yog roj, thiab cov theem uas tawg yog dej (piv txwv li, butter, roj cav). Lawvemulsion viscosityfeem ntau siab dua vim yog cov roj theem txuas ntxiv tuab dua.
- Ntau yam emulsionsCov khoom sib xyaw ua ke xws li roj-hauv-dej-hauv-roj (O/W/O) lossis dej-hauv-roj-hauv-dej (W/O/W) (piv txwv li, cov tshuaj tswj kev tso tawm). Cov no muaj cov qauv viscosity uas xav tau kev saib xyuas kom meej, lub sijhawm tiag tiag kom tsis txhob muaj kev tawg ntawm theem.
- Cov tshuaj macroemulsionsCov tee dej me me muaj li ntawm 0.1–10 μm; lawv tsis pom tseeb thiab muaj viscosity ruaj khov yog tias tsim kom zoo.
- Cov tshuaj microemulsionsCov tee dej me me < 0.1 μm; lawv pob tshab thiab muaj qis duaemulsion viscosityvim muaj kev cuam tshuam tsawg kawg nkaus ntawm cov tee dej.
- Cov nanoemulsionsCov tee dej loj li ntawm 10–100 nm; lawv sib npaug qhov ruaj khov thiab viscosity, ua rau lawv pom ntau hauv cov tshuaj pleev ib ce thiab tshuaj muaj txiaj ntsig zoo.
Los ntawm Qhov Loj ntawm Cov Droplet
Cov Txheej Txheem Ua Cov Emulsion - Cov Emulsion Ua Li Cas?
Kev tsim cov emulsion yog ib qho txheej txheem ntau kauj ruam uas txhua theem cuam tshuam rau qhov kawgemulsion viscosity; kev ua tiav tas li tsuas yog ua tau nrog cov lus teb viscosity tiag tiag. Cov txheej txheem ua haujlwm ib txwm muaj xws li:
Kev Ua Ntej
- Kev Npaj Khoom Siv RawNtsuas thiab ua kom roj, dej, thiab cov emulsifiers kub txog qhov kub uas xav tau (feem ntau yog 50–80°C) kom txo qhov viscosity thiab txhim kho kev sib xyaw. Kev hloov pauv ntawm qhov kub ntawm no tuaj yeem ua rau muaj kev hloov pauv viscosity thaum ntxov, yog li kev sib koom ua keemulsion viscositylub ntsuas kub thiab txias yog qhov tseem ceeb heev.
- Kev tshem tawm cuaTshem tawm cov npuas cua ntawm cov khoom siv raw, vim tias cov cua uas raug kaw ua rau qhov ntsuas viscosity txo qis thiab ua rau cov ntawv nyeem tsis raug (thiab yog li ntawd kev tswj xyuas zoo tsis zoo).
Kev sib xyaw ua ke (Theem Tseem Ceeb)
Cov kauj ruam no rhuav cov theem uas tau tawg ua tej tee me me thiab sib tov nrog cov theem txuas ntxiv mus - tus tsav tsheb tseem ceeb ntawm qhov kawgroj dej emulsion viscosity:
- Kev Sib Tov Ceev CeevSiv cov rotor-stator mixers los tsim cov shear intense; cov shear rates siab dua txo cov droplet loj thiab ua rau viscosity nce (txog ib qho, tom qab ntawd shear ntxiv muaj qhov cuam tshuam tsawg kawg nkaus).
- Kev sib xyaw ua keSiv cov tshuab homogenizers siab (10–100 MPa) los tsim cov tee dej sib xws; cov kauj ruam no yog ib txwm muaj hauv cov mis nyuj thiab tshuaj, qhov twg sib xwsemulsion viscositytsis yog kev sib tham.
- Ultrasonic EmulsificationSiv cov nthwv dej suab los rhuav cov tee dej; zoo tagnrho rau nanoemulsions, qhov twg kev tswj hwm viscosity kom meej tiv thaiv cov tee dej sib sau ua ke.
- TxiasTxo qhov kub ntawm cov emulsion kom qis dua qhov kub hauv chav lossis qhov kub cia; viscosity feem ntau nce ntxiv thaum cov emulsion txias, yog li kev saib xyuas hauv kab ua kom nws nyob hauv qhov kev cai.
- Kev Koom Tes NtxivNtxiv cov tshuaj tiv thaiv, tshuaj tsw qab, lossis cov khoom xyaw nquag; cov no tuaj yeem hloov pauv viscosity (piv txwv li, cov khoom ua kom tuab ntxivemulsion viscosity), xav tau kev hloov kho tam sim ntawd.
- Kev lim dejTshem tawm cov khoom loj lossis cov tee dej uas tsis tau sib xyaw; qhov viscosity poob qis tam sim ntawd ntawm no yuav qhia tau tias lim dej txhaws lossis sib cais theem.
Kev Ua Tom Qab
Cov hauv paus ntawm kev ruaj khov ntawm emulsion
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Cov Teeb Meem Hauv Kev Txiav Txim Siab Viscosity ntawm Cov Emulsions Txuas Ntxiv Mus
Rau cov kws ua haujlwm txheej txheem thiab cov kws tshaj lij kev siv tshuab, txuas ntxiv musemulsion viscositykev soj ntsuam ntsib cov teeb meem tshwj xeeb uas cov cuab yeej ib txwm muaj (piv txwv li, cov viscometers offline, cov raj iav capillary) tsis tuaj yeem kov yeej. Cov teeb meem no suav nrog:
- Lub Sijhawm Lag nrog Kev Ntsuas OfflineCov txheej txheem offline yuav tsum tau kuaj, thauj, thiab tshuaj xyuas cov qauv - ib qho txheej txheem uas siv sijhawm 15-60 feeb. Hauv kev tsim khoom tas mus li, qhov kev ncua sij hawm no txhais tau tias cov teeb meem viscosity raug kuaj pom lig dhau los txuag tag nrho cov pawg, ua rau muaj kev pov tseg kim heev.
- Qauv Kev Distortion: Thaum kuaj los ntawm kab ntau lawm,roj dej emulsion viscositykev hloov pauv vim yog qhov kub poob, kev txo qis ntawm shear, lossis cov dej sib sau ua ke. Yog li ntawd, qhov nyeem ntawv hauv chav kuaj tsis qhia txog qhov viscosity tiag tiag hauv kab, ua rau muaj kev hloov kho tsis raug.
- Cov Xwm Txheej Tsim Khoom HnyavKev tsim cov emulsion feem ntau yuav tsum muaj qhov kub siab (< 450°C, raws li cov qauv kev lag luam), qhov siab siab (> 10 MPa qee zaum), thiab cov khoom xyaw corrosive (piv txwv li, cov dej acidic). Cov sensors ib txwm ua tsis tau sai ntawm no, vim tias lawv tsis muaj kev tiv thaiv zoo lossis kev sib xws ntawm cov khoom.
- Kev coj cwj pwm tsis yog Newtonian kuaFeem ntau cov emulsions yog non-Newtonian— lawv covemulsion viscositykev hloov pauv nrog tus nqi shear (piv txwv li, shear-thinning emulsions tau nyias dua li shear nce). Offline viscometers sim ntawm tus nqi shear ruaj khov, yog li lawv tsis tuaj yeem ntes cov kev hloov pauv viscosity dynamic uas tshwm sim hauv cov twj tso kua mis, cov khoom sib tov, lossis cov kav dej.
- Kev Txij Nkawm Sensor thiab Kev Ua PhemCov emulsions tuaj yeem tso cov khoom seem rau ntawm cov nto ntawm lub sensor, tshwj xeeb tshaj yog tias lawv muaj cov khoom khov (piv txwv li, cov khoom siv pleev ib ce uas muaj cov khoom me me). Qhov kev qias neeg no ua rau cov nyeem ntawv tsis meej pem raws sijhawm, thiab cov sensors uas yuav tsum tau muab rhuav tshem ntau zaus los ntxuav yuav cuam tshuam rau kev tsim khoom.
Lonnmeter Vibrational Viscometer - Kev daws teeb meem Inline rau Emulsion Viscosity
Txhawm rau daws cov teeb meem saum toj no,Lonnmeter hauv kab txheej txheem viscometeryog tsim tshwj xeeb rau kev txuas ntxiv mus tas liemulsion viscositykev saib xyuas. Nws yog qhov kev xaiv ua ntej rau cov tuam txhab tsim cov emulsion vim nws muab kev ua tau zoo, kev hloov pauv tshwj xeeb rau emulsion, thiab kev tswj hwm lub sijhawm tiag tiag - tseem ceeb rau cov pab pawg tswj kev tsim khoom uas tsom mus rau kev txhim kho kom ntsuas tau.
Cov Txheej Txheem Tseem Ceeb (Tsim rau Kev Tsim Khoom Emulsion)
Cov lus qhia ntawm Lonnmeter daws tau cov teeb meem ntawm kev saib xyuas viscosity ntawm emulsion, ua kom muaj qhov tseeb thiab kev ntseeg tau hauv cov xwm txheej hnyav lossis dynamic:
| Cov Qauv | Cov Lus Qhia Tshwj Xeeb | Vim Li Cas Nws Tseem Ceeb Rau Emulsions |
| Qhov ntau ntawm viscosity | 1 – 1,000,000 cP | Npog tag nrhocov hom emulsion(txij li cov microemulsions uas muaj viscosity tsawg mus rau cov cream uas muaj viscosity siab W/O). |
| Kev raug | ±3.0% | Xyuas kom meejemulsion viscositynyob rau hauv cov qauv zoo nruj (piv txwv li, ± 5% rau cov tshuaj emulsions). |
| Rov ua dua tau | ±1% | Tshem tawm cov kev nyeem tsis sib xws uas tshwm sim los ntawm kev hloov pauv ntawm cov dej ntws emulsion. |
| Kev Tiv Thaiv Kub | < 450°C | Tiv taus cov kauj ruam emulsification kub siab (piv txwv li, kev tsim cov roj nplua nyeem hauv kev lag luam). |
| Qhov Ntsuas Siab Ntau Yam | < 6.4 MPa (kho kom haum rau >10 MPa) | Haum rau cov kab homogenization siab, qhov twgroj dej emulsion viscosityyog qhov tseem ceeb. |
| Khoom siv | 316 Stainless Hlau (tus qauv) | Tiv taus xeb los ntawm cov theem emulsion acidic lossis alkaline, tiv thaiv kev puas tsuaj ntawm lub sensor. |
| Qib Kev Tiv Thaiv | IP68 (sensor) / IP67 (electronics) | Tiv thaiv dej, hmoov av, thiab cov tshuaj emulsion txaws hauv cov chaw tsim khoom tsis huv. |
| Tus Qauv Tiv Thaiv Kev Tawg | ExdIIBT4 | Muaj kev nyab xeeb rau kev siv hauv cov kab petrochemical lossis cov kuab tshuaj emulsion (piv txwv li, cov emulsifiers hauv roj av). |
| Lub Sijhawm Teb Teeb Liab | 5s | Ntes tau qhov hloov pauv sai ntawm viscosity (piv txwv li, thaum lub sijhawm ntxiv emulsifier) thiab ua rau muaj kev hloov kho tam sim ntawd. |
| Tso zis | 4 – 20 mADC (viscosity/kub) + Modbus | Sib koom ua ke nrog PLCs lossis SCADA systems rau kev tswj cov txheej txheem tsis siv neeg thiab kev sau cov ntaub ntawv. |
Txoj Cai Ua Haujlwm - Tsim los rau Kev Coj Ua Haujlwm ntawm Emulsion Flow
Lub hauv paus ntsiab lus ua haujlwm ntawm Lonnmeter hais txog qhov tsis yog Newtonian thiab dynamic xwm ntawm emulsions, kom ntseeg tau tias muaj tseebemulsion viscositykev nyeem ntawv yam tsis cuam tshuam kev tsim khoom:
- Lub viscometer lub conical sensor oscillates axially ntawm qhov zaus ruaj khov. Thaum emulsion ntws hla lub sensor, cov kua dej raug txiav - ua raws li cov nqi shear pom nyob rau hauv cov kab ntau lawm tiag tiag (piv txwv li, twj tso kua mis, mixers).
- Kev hloov pauv hauvemulsion viscosityhloov lub zog uas ploj thaum lub sijhawm oscillation: viscosity siab dua ua rau muaj kev tiv thaiv ntau dua, ua rau lub zog poob ntau ntxiv; viscosity qis dua ua rau kev tiv thaiv tsawg dua.
- Lub voj voog hluav taws xob ntawm lub sensor ntes tau qhov kev poob zog no, hloov nws mus rau qhov viscosity, thiab xa cov ntaub ntawv hauv lub sijhawm tiag tiag (ntawm 4–20 mADC lossis Modbus).
- Tsis zoo li cov viscometers ib txwm muaj, nws tsis muaj cov khoom txav mus los, cov foob, lossis cov bearings. Tus qauv tsim no tshem tawm cov av qias neeg ntawm cov emulsion residues (tsis muaj qhov tawg rau kev sib sau ua ke) thiab txo kev txij nkawm - qhov tseem ceeb rau kev tsim khoom 24/7 tas mus li.
Kawm Txog Ntau Cov Ntsuas Qhov Ceev
Ntau Cov Txheej Txheem Online
Cov txiaj ntsig ntawm Inline Emulsion Viscometer (Lonnmeter) rau cov chaw tsim khoom emulsion
Rau cov chaw ua haujlwm thiab cov engineers ua haujlwm kom zoo dua qub, Lonnmeter muab cov txiaj ntsig pom tseeb, ntsuas tau uas ncaj qha txhim kho qhov zoo, kev ua haujlwm zoo, thiab kev siv nyiaj tsim nyog - txhua yam tsom mus rau qhov tseebemulsion viscositykev tswj:
Kev Hloov Kho Tshwj Xeeb rau Emulsion
- Siv cov kua uas tsis yog NewtonianLos ntawm kev txiav cov emulsion ntawm cov nqi txiav hauv kab, nws muab qhov tseebroj dej emulsion viscositycov kev nyeem ntawv uas phim cov xwm txheej tsim khoom tiag tiag - tsis yog tsuas yog cov chaw teeb tsa hauv chav kuaj xwb.
- Tiv taus cov xwm txheej hnyav: 316 stainless hlau, kev tiv thaiv IP68, thiab kev kam rau siab kub/siab txhais tau tias nws ua haujlwm tau zoo hauv txhua qhov chaw tsim khoom emulsion, los ntawm kev ua zaub mov (qhov yuav tsum tau ntxuav hauv qhov chaw) mus rau petrochemicals (huab cua tawg).
- Tshem tawm cov khib nyiab ntau ntauCov kev nyeem viscosity tam sim ntawd cia cov neeg teb xov tooj kho cov kev teeb tsa (piv txwv li, emulsifier dosage, shear rate) hauv vib nas this—ua ntej cov emulsion uas tsis ua raws li qhov yuav tsum tau ua.
- Ua kom muaj kev sib xws± 1% repeatability txhais tau tias txhua pawg muaj tib yamemulsion viscosity, txo cov lus tsis txaus siab ntawm cov neeg siv khoom thiab rov ua haujlwm dua.
- Txo Kev Ua Haujlwm TesTsis tas yuav siv tes kuaj los yog kev tshuaj xyuas hauv chaw kuaj mob ntxiv lawm—cia cov kws kho tshuab ua haujlwm tau ntau yam haujlwm tseem ceeb dua.
- Ua kom cov txheej txheem hloov kho tsis siv neeg: Sib koom ua ke nrog PLCs kom hloov kho cov kev teeb tsa (piv txwv li, nce qhov siab ntawm homogenizer yog tias viscosity poob qis) - txo qhov yuam kev ntawm tib neeg thiab xyuas kom meej tias 24/7 sib xws.
- Cov Ntaub Ntawv Txog Viscosity: Cov khw muag khoom Modbusemulsion viscositythiab cov ntaub ntawv kub, uas yog qhov tseem ceeb rau kev ua raws li txoj cai (piv txwv li, FDA cov kev cai rau cov tshuaj emulsions) lossis kev tshuaj xyuas keeb kwm (piv txwv li, taug qab vim li cas viscosity spiked kawg hloov pauv).
- Cov tswb ceeb toom ua rau muaj kev ceeb toom: Cov tswb ceeb toom tam sim ntawd ceeb toom cov neeg ua haujlwm txog qhov tsis sib xws ntawm cov viscosity, tiv thaiv kev them nqi kim lossis kev ua tsis tiav ntawm cov khoom.
Kev Tswj Xyuas Zoo Tiag Tiag
Kev Ua Haujlwm Zoo
Kev taug qab cov ntaub ntawv thiab kev ua raws li txoj cai
Yog tias koj pab neeg tsim khoom emulsion npaj txhij txav mus los ntawm kev ua haujlwm tsis tu ncua mus rau kev ua haujlwm nquagemulsion viscositytswj—thiab txo cov khib nyiab, txhim kho qhov zoo, thiab txhawb kev ua haujlwm zoo—nws yog lub sijhawm los thov tus nqi rau Lonnmeter hauv-kabemulsion viscometerThov koj daim ntawv hais nqe hnub no kom pib ua kom koj cov emulsion zoo dua qub - thiab tau txais kev sib xwsroj dej emulsion viscositykoj cov neeg siv khoom xav tau.
