1. Hydroxypropyl methylcellulose yog dab tsi?
Hydroxypropyl methylcellulose (HPMC)yog ib qho cellulose ether uas tsis muaj tshuaj lom thiab tsis ua rau muaj kev phom sij, siv dav hauv cov ntaub ntawv tsim kho, khoom noj, tshuaj, tshuaj pleev ib ce thiab lwm yam. Nws muaj cov haujlwm ntawm kev ua kom tuab, khaws dej, tsim zaj duab xis, sib txuas, lubrication thiab ncua, thiab tuaj yeem yaj hauv dej los ua cov kua pob tshab lossis pob tshab.
2. Kev siv thiab kev siv HPMC ntau npaum li cas
Kev tsim kho teb
HPMC feem ntau siv rau hauv cov ntaub ntawv siv hauv kev tsim kho xws li cement mortar, putty hmoov, vuas nplaum, thiab lwm yam.
Kev Ua Haujlwm: Txhim kho kev ua haujlwm ntawm kev tsim kho, txhim kho kev khaws dej, txuas lub sijhawm qhib, thiab txhim kho kev ua haujlwm ntawm kev sib txuas.
Txoj kev siv:
Ntxiv ncaj qha rau cov mortar qhuav-mixed, qhov ntau npaum li cas pom zoo yog 0.1% ~ 0.5% ntawm qhov hnyav ntawm cement lossis substrate;
Tom qab do tag, ntxiv dej thiab do kom sib xyaw.
Kev lag luam zaub mov
HPMC siv tau ua cov khoom ua kom tuab, stabilizer thiab emulsifier, thiab feem ntau pom muaj nyob rau hauv cov khoom noj xws li ice cream, jelly, qhob cij, thiab lwm yam.
Kev Ua Haujlwm: Txhim kho qhov saj, ruaj khov lub cev, thiab tiv thaiv kev faib ua pawg.
Kev Siv:
Yaj rau hauv dej txias, qhov ntau npaum li cas pom zoo yog kho ntawm 0.2% thiab 2% raws li hom khoom noj;
Kev cua sov los yog kev sib xyaw ua ke tuaj yeem ua rau kom yaj sai dua.
Kev lag luam tshuaj
HPMC feem ntau siv rau hauv cov tshuaj ntsiav txheej, cov ntsiav tshuaj matrix lossis lub plhaub capsule:
Kev Ua Haujlwm: kev tsim cov zaj duab xis, kev tso tshuaj qeeb, thiab kev tiv thaiv kev ua haujlwm ntawm cov tshuaj.
Kev Siv:
Npaj rau hauv cov tshuaj nrog qhov concentration ntawm 1% txog 5%;
Tshuaj tsuag kom sib npaug rau ntawm qhov chaw ntawm lub ntsiav tshuaj kom tsim tau ib zaj duab xis nyias.
Tshuaj pleev ib ce
HPMCsiv ua cov khoom ua kom tuab, emulsion stabilizer lossis zaj duab xis-tsim tus neeg sawv cev, feem ntau siv rau hauv lub ntsej muag lub ntsej muag, tshuaj pleev, thiab lwm yam.:
Kev Ua Haujlwm: Txhim kho cov qauv thiab txhim kho qhov kev xav ntawm cov khoom.
Kev Siv:
Ntxiv rau cov khoom siv pleev kom zoo nkauj hauv qhov sib piv thiab do kom sib npaug;
Feem ntau cov tshuaj yog 0.1% txog 1%, kho raws li cov khoom xav tau.
3. Txoj kev yaj HPMC
Qhov solubility ntawm HPMC yog cuam tshuam los ntawm dej kub:
Nws yooj yim yaj rau hauv dej txias thiab tuaj yeem tsim cov tshuaj sib xws;
Nws tsis yaj hauv dej kub, tab sis tuaj yeem tawg thiab tsim cov colloid tom qab txias.
Cov kauj ruam tshwj xeeb ntawm kev yaj:
Maj mam txau HPMC rau hauv dej, tsis txhob nchuav ncaj qha kom tiv thaiv kev ua caking;
Siv lub stirrer los sib tov kom sib npaug;
Kho qhov concentration ntawm cov tshuaj raws li qhov xav tau.
4. Cov kev ceev faj rau kev siv HPMC
Kev tswj cov tshuaj: Hauv cov xwm txheej thov sib txawv, cov tshuaj cuam tshuam ncaj qha rau kev ua tau zoo thiab yuav tsum tau kuaj xyuas raws li qhov xav tau.
Cov xwm txheej khaws cia: Nws yuav tsum tau khaws cia rau hauv qhov chaw txias, qhuav, qhov chaw muaj cua nkag kom tsis txhob muaj dej noo thiab kub.
Kev tiv thaiv ib puag ncig: HPMC yog biodegradable thiab tsis ua rau ib puag ncig puas tsuaj, tab sis nws tseem yuav tsum tau siv rau hauv tus qauv kom tsis txhob muaj pov tseg.
Kev xeem sib xws: Thaum ntxiv rau hauv cov txheej txheem nyuaj (xws li cov tshuaj pleev ib ce lossis tshuaj), kev sib xws nrog lwm cov khoom xyaw yuav tsum tau kuaj xyuas.
5. Cov txiaj ntsig ntawm HPMC
Tsis muaj tshuaj lom, tus phooj ywg ib puag ncig, kev nyab xeeb siab;
Versatility, adaptable rau ntau yam kev thov xav tau;
Kev ruaj khov zoo, tuaj yeem khaws cia kev ua tau zoo rau lub sijhawm ntev.
6. Cov teeb meem thiab kev daws teeb meem uas feem ntau tshwm sim
Teeb meem kev sib sau ua ke: Ua tib zoo saib xyuas qhov sib ntxiv thaum siv thiab do kom tag nrho tib lub sijhawm.
Lub sijhawm yaj ntev: Kev kho dej kub ua ntej lossis kev sib xyaw tshuab tuaj yeem siv los ua kom sai dua.
Kev ua haujlwm poob qis: Ua tib zoo saib xyuas qhov chaw cia khoom kom tsis txhob muaj dej noo thiab cua sov.
Los ntawm kev siv HPMC scientifically thiab rationally, nws cov yam ntxwv multifunctional tuaj yeem siv tau tag nrho los muab cov kev daws teeb meem zoo rau ntau yam lag luam.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-10-2024