Yuav ua li cas kom ua tau zoo viscosity ntawm HPMC hauv cov ntxhua khaub ncaws

(1) Taw qhia rau HPMC
Hydroxypropyl Methylcellulose (HPMC) yog ib qho tseem ceeb nonionic cellulose ether dav siv nyob rau hauv detergents, tsev ntaub ntawv, zaub mov, tshuaj thiab lwm yam teb. Hauv cov tshuaj ntxhua khaub ncaws, HPMC yog siv los ua cov thickener los muab kev ncua kev ruaj ntseg zoo thiab solubility, txhim kho cov adhesion thiab ntxuav cov nyhuv ntawm ntxhua khaub ncaws. Txawm li cas los xij, kom ua tiav qhov zoo tshaj plaws viscosity ntawm HPMC hauv cov ntxhua khaub ncaws ntxhua khaub ncaws, ntau yam yuav tsum tau txiav txim siab, suav nrog hom, ntau npaum li cas, kev sib cais, kev sib txuas ntxiv, thiab lwm yam ntawm HPMC.

(2) Cov yam ntxwv cuam tshuam rau HPMC viscosity
1. Hom thiab qauv ntawm HPMC
Qhov hnyav molecular thiab degree ntawm kev hloov pauv (methoxy thiab hydroxypropyl hloov pauv) ntawm HPMC ncaj qha cuam tshuam rau nws cov viscosity thiab solubility zog. Ntau hom HPMC muaj qhov sib txawv viscosity. Xaiv tus qauv HPMC uas haum rau koj lub tshuab ntxhua khaub ncaws yog qhov tseem ceeb. Feem ntau hais lus, siab dua molecular hnyav HPMCs muab viscosities ntau dua, thaum qis molecular hnyav HPMCs muab qis dua viscosities.

2. Kev noj tshuaj HPMC
Tus nqi ntawm HPMC muaj qhov cuam tshuam loj rau viscosity. Feem ntau, HPMC tau ntxiv rau ntawm 0.5% thiab 2% hauv cov tshuaj ntxhua khaub ncaws. Qhov ntau npaum li cas uas tsawg dhau yuav tsis ua tiav qhov xav tau thickening nyhuv, thaum ntau npaum li cas siab dhau yuav ua rau muaj teeb meem xws li nyuaj rau kev sib cais thiab tsis sib xws. Yog li, qhov ntau npaum li cas ntawm HPMC yuav tsum tau hloov kho raws li cov kev xav tau tshwj xeeb thiab cov txiaj ntsig kev sim kom ua tiav qhov kev pom zoo viscosity.

3. Cov xwm txheej tawg
Qhov kev sib cais ntawm HPMC (kub, pH tus nqi, nplawm nrawm, thiab lwm yam) muaj qhov cuam tshuam tseem ceeb ntawm nws cov viscosity:

Kub: HPMC dissolves qeeb qeeb ntawm qhov kub thiab txias tab sis tuaj yeem muab cov viscosities ntau dua. Dissols sai dua ntawm qhov kub thiab txias, tab sis muaj qis viscosity. Nws raug nquahu kom yaj HPMC ntawm 20-40 ° C kom nws ruaj khov thiab viscosity.

pH: HPMC ua tau zoo tshaj plaws nyob rau hauv nruab nrab tej yam kev mob. Cov pH siab heev ( acidic lossis alkaline dhau) tuaj yeem rhuav tshem cov qauv ntawm HPMC thiab txo nws cov viscosity. Yog li ntawd, tswj tus nqi pH ntawm lub tshuab ntxhua khaub ncaws ntawm 6-8 pab tswj kev ruaj ntseg thiab viscosity ntawm HPMC.

stirring ceev: Tsim nyog stirring ceev yuav txhawb lub dissolution ntawm HPMC, tab sis ntau stirring yuav qhia npuas thiab cuam tshuam cov uniformity ntawm cov tshuaj. Nws feem ntau pom zoo kom siv qeeb thiab txawm tias nplawm nrawm kom tag nrho HPMC yaj.

4. Ntxiv kev txiav txim
HPMC yooj yim tsim agglomerates hauv kev daws teeb meem, cuam tshuam rau nws qhov kev sib cais thiab kev ua haujlwm viscosity. Yog li, qhov kev txiav txim uas HPMC ntxiv yog qhov tseem ceeb:

Kev sib xyaw ua ntej: Sib tov HPMC nrog lwm cov hmoov qhuav sib npaug thiab tom qab ntawd maj mam ntxiv rau hauv dej, uas tuaj yeem tiv thaiv kev tsim cov clumps thiab pab kom yaj sib npaug.

Moisturizing: Ua ntej ntxiv HPMC rau cov tshuaj ntxhua khaub ncaws, koj tuaj yeem ua ntej moisten nws nrog dej txias me me, thiab tom qab ntawd ntxiv dej kub kom yaj. Qhov no tuaj yeem txhim kho qhov kev sib xyaw ua haujlwm thiab viscosity ntawm HPMC.

(3) Cov kauj ruam los txhim kho HPMC viscosity
1. Cov qauv tsim
Xaiv HPMC tus qauv tsim nyog thiab ntau npaum li cas raws li kev siv kawg thiab cov kev xav tau ntawm cov tshuaj ntxhua khaub ncaws. High-efficiency cleaning detergents tej zaum yuav xav tau siab viscosity HPMC, thaum lub sij hawm tu cov khoom yuav xaiv nruab nrab mus rau tsawg viscosity HPMC.

2. Kev sim ntsuas
Ua cov kev sim me me hauv chav kuaj xyuas kom pom nws qhov cuam tshuam ntawm viscosity ntawm cov ntxhua khaub ncaws ntxhua khaub ncaws los ntawm kev hloov cov tshuaj, kev sib cais, kev txiav txim ntxiv, thiab lwm yam ntawm HPMC. Sau cov kev txwv thiab cov txiaj ntsig ntawm txhua qhov kev sim los txiav txim siab qhov sib xyaw ua ke zoo tshaj plaws.

3. Cov txheej txheem hloov kho
Siv lub chaw soj ntsuam cov zaub mov zoo tshaj plaws thiab cov txheej txheem txheej txheem rau cov kab ntau lawm thiab kho lawv rau cov khoom loj. Xyuas kom muaj kev faib tawm thiab kev sib cais ntawm HPMC thaum lub sijhawm tsim khoom kom tsis txhob muaj teeb meem xws li clumps thiab kev tawg tsis zoo.

4. Kev tswj kom zoo
Los ntawm cov kev ntsuas zoo, xws li kev ntsuas viscometer, ntsuas particle loj, thiab lwm yam, kev ua haujlwm ntawm HPMC hauv cov ntxhua khaub ncaws ntxhua khaub ncaws raug saib xyuas kom ntseeg tau tias nws ua tiav qhov xav tau viscosity thiab siv cov nyhuv. Ua kev soj ntsuam zoo li niaj zaus thiab kho cov txheej txheem thiab cov qauv tam sim yog pom muaj teeb meem.

(4) Muaj lus nug thiab kev daws teeb meem
1. Kev sib cais tsis zoo ntawm HPMC
Yog vim li cas: Tsis tsim nyog dissolution kub, ceev heev los yog qeeb stirring ceev, tsis tsim nyog ntxiv kev txiav txim, thiab lwm yam.
Kev daws: Kho qhov kub ntawm qhov sib tov mus rau 20-40 ° C, siv qeeb thiab txawm nplawm nrawm, thiab ua kom zoo dua qhov sib ntxiv.
2. HPMC viscosity tsis yog raws li tus qauv
Yog vim li cas: Tus qauv HPMC tsis tsim nyog, qhov ntau npaum li cas tsis txaus, tus nqi pH siab dhau lossis qis dhau, thiab lwm yam.
Kev daws: Xaiv cov qauv HPMC thiab ntau npaum li cas, thiab tswj tus nqi pH ntawm lub tshuab ntxhua khaub ncaws ntawm 6-8.
3. HPMC clump tsim
Yog vim li cas: HPMC tau ntxiv ncaj qha rau hauv cov kev daws teeb meem, tsis raug kev puas tsuaj, thiab lwm yam.
Kev daws: Siv txoj kev sib xyaw ua ntej, ua ntej sib xyaw HPMC nrog lwm cov hmoov qhuav, thiab maj mam ntxiv rau hauv dej kom yaj.

Txhawm rau ua tiav qhov pom zoo viscosity ntawm HPMC hauv cov ntxhua khaub ncaws ntxhua khaub ncaws, yam xws li hom, ntau npaum li cas, kev sib cais, thiab kev txiav txim ntawm HPMC ntxiv yuav tsum tau txiav txim siab. Los ntawm kev tsim qauv tsim qauv, kev sim kev sim thiab kev hloov kho cov txheej txheem, qhov viscosity kev ua tau zoo ntawm HPMC tuaj yeem ua tau zoo, yog li kev txhim kho kev siv thiab kev lag luam kev sib tw ntawm cov ntxhua khaub ncaws ntxhua khaub ncaws.


Lub sij hawm xa tuaj: Plaub Hlis-08-2024