Hydroxypropyl methylcellulose (HPMC)yog ib qho non-ionic, semi-synthetic polymer dav siv hauv cov khoom siv hauv tsev, tshuaj, khoom noj, tshuaj pleev ib ce thiab lwm yam kev lag luam.
1. Lub cev thiab tshuaj muaj zog
HPMC yog ib qho polymer ua los ntawm cov nroj tsuag ntuj cellulose los ntawm kev hloov tshuaj. Nws feem ntau yog cov hmoov dawb los yog dawb dawb, tsis qab, tsis muaj ntxhiab thiab tsis muaj tshuaj lom. Nws muaj cov dej zoo solubility thiab tuaj yeem yaj hauv dej txias lossis dej kub los tsim cov pob tshab lossis me ntsis turbid colloidal tov. Nws cov yam ntxwv solubility cuam tshuam los ntawm kev hloov pauv, qhov hnyav molecular thiab kub.
2. Thickening
HPMC muaj cov khoom thickening zoo heev thiab tuaj yeem ua kom cov viscosity ntawm cov tshuaj, ua rau nws siv los ua cov thickener hauv kev lag luam xws li cov khoom siv hauv tsev, txheej, thiab tshuaj. Piv txwv li, hauv cov cement mortar, nws tuaj yeem txhim kho nws txoj haujlwm thiab kev tsim kho.
3. Kev tuav dej
HPMC tuaj yeem txo cov evaporation ntawm cov dej zoo thiab txhim kho cov dej tuav lub peev xwm ntawm cov khoom. Cov cuab yeej no tseem ceeb tshwj xeeb hauv kev tsim kho kev lag luam. Piv txwv li, ntxiv HPMC rau cov cement mortar thiab gypsum-raws li cov ntaub ntawv tuaj yeem txuas ntxiv lawv lub sijhawm qhib, txhim kho kev tsim kho kom zoo, thiab txo qhov tawg.
4. Adhesion
Vim nws cov khoom zoo adhesion, HPMC tau siv dav hauv cov nplais nplaum, txheej, nplaum thiab lwm yam. Hauv cov nplais nplaum, nws tuaj yeem txhim kho lub zog sib txuas thiab txhim kho qhov yooj yim ntawm kev tsim kho.
5. Lubricity
HPMC nthuav tawm lubricity zoo nyob rau hauv aqueous tov, uas ua rau nws ib tug zoo lubricant nyob rau hauv zus tau tej cov kev tsim kho, coatings, tshuaj pleev ib ce thiab tshuaj ntsiav tshuaj, kev txhim kho cov kev ua tau zoo ntawm cov khoom.
6. Kev ua haujlwm saum npoo av
Cov qauv molecular ntawm HPMC muaj cov pab pawg hydrophilic thiab hydrophobic, uas ua rau nws muaj qee qhov kev ua haujlwm saum npoo thiab tuaj yeem ua lub luag haujlwm ntawm emulsification, ncua kev kawm ntawv, dispersion thiab lwm yam. Yog li ntawd, nws kuj yog siv nyob rau hauv coatings, emulsion polymerization, detergents thiab lwm yam khoom.
7. ntsev kuj thiab pH stability
HPMC yog ib yam khoom uas tsis yog-ionic polymer, yog li nws kuj ruaj khov rau electrolytes thiab tsis yooj yim rau precipitate nrog inorganic ntsev. Tsis tas li ntawd, nws yog qhov ruaj khov hauv pH ntau ntawm 3 txog 11 thiab haum rau ntau qhov chaw.
8. Cov cuab yeej ua yeeb yaj kiab
HPMC tuaj yeem tsim cov yeeb yaj kiab pob tshab rau ntawm qhov chaw ntawm ntau cov ntaub ntawv nrog cov khoom siv zoo thiab kev ua haujlwm yooj yim, yog li nws tau siv dav hauv cov tshuaj (cov ntsiav tshuaj txheej), zaub mov (tiv thaiv zaj duab xis), txheej (zaj duab xis-tsim pab), thiab lwm yam.
9. Kub tsis kam
HPMC muaj qhov zoo thermal stability thiab tseem tuaj yeem tswj tau qee yam kev ruaj ntseg ntawm qhov kub thiab txias. Nws yuav undergo thermal gelation nyob rau hauv aqueous tov nyob rau hauv tus ntawm qhov kub thiab txias, uas yog, nws yuav tsim ib tug gel ntawm ib tug tej yam kub thiab yaj dua tom qab txias. Cov cuab yeej no tau siv dav hauv kev tsim kho, khoom noj thiab tshuaj lag luam.
10. Biocompatibility thiab kev nyab xeeb
HPMC yog cov khoom tsis muaj tshuaj lom, tsis ua rau khaus khaus nrog biocompatibility zoo, yog li nws tau siv dav hauv kev lag luam tshuaj thiab zaub mov. Piv txwv li, nws tuaj yeem siv tau rau hauv cov tshuaj tiv thaiv-tso tawm, qhov muag tee thickeners, thiab zaub mov thickeners thiab emulsifiers.
Daim ntawv thov teb
Vim nws lub cev zoo thiab tshuaj lom neeg, HPMC tau siv dav hauv cov haujlwm hauv qab no:
Kev tsim kho kev lag luam: siv los ua cov thickener thiab dej-retaining agent rau cement mortar, pobzeb nplaum, putty hmoov, thiab gypsum khoom los txhim kho kev tsim kho kev ua haujlwm thiab adhesion.
Kev lag luam kws tshuaj: siv los ua cov tshuaj ntxiv rau cov ntsiav tshuaj nplaum, cov ntaub ntawv tso tawm, emulsifiers thiab stabilizers, thiab lwm yam.
Khoom noj khoom haus kev lag luam: siv los ua zaub mov thickener, emulsifier, thiab stabilizer rau ice cream, kua txiv, kua ntses thiab lwm yam khoom.
Kev lag luam tshuaj pleev ib ce: siv rau hauv cov khoom tu tawv nqaij, tshuaj zawv plaub hau, tshuaj txhuam hniav, thiab lwm yam, los muab cov thickening, emulsification thiab moisturizing los.
Txheej kev lag luam: siv los ua cov thickener thiab zaj duab xis-kev pab rau cov dej-raws li txheej los txhim kho cov uniformity thiab stability ntawm txheej.
HPMCyog cov khoom siv polymer zoo heev nrog cov yam ntxwv ntawm thickening, dej tuav, tsim zaj duab xis, lubrication, thiab adhesion, thiab yog non-toxic thiab harmless, haum rau ntau yam lag luam. Nws yog dav siv hauv kev tsim kho, tshuaj, khoom noj, tshuaj pleev ib ce, txheej thiab lwm yam kev lag luam los txhim kho cov khoom zoo thiab kev ua haujlwm. Nyob rau hauv lub neej yav tom ntej, nrog rau kev nce qib ntawm cov cuab yeej technology thiab kev loj hlob ntawm kev lag luam xav tau, daim ntawv thov Scope ntawm HPMC tej zaum yuav nthuav ntxiv thiab ua lub luag haujlwm tseem ceeb dua.
Post lub sij hawm: Mar-27-2025