Hydroxypropyl Methyl Cellulose (HPMC) yog cov khoom siv tshuaj lom neeg ntau yam siv dav hauv cov khoom siv hauv tsev, tshwj xeeb tshaj yog nyob rau hauv kev tsim thiab siv cov hmoov putty. Putty hmoov yog cov khoom siv los kho lub tsev. Nws lub luag haujlwm tseem ceeb yog sau qhov tsis sib xws ntawm phab ntsa saum npoo av thiab muab cov txheej du thiab hnav zoo, muab ib lub hauv paus zoo rau cov txheej txheem kev kho kom zoo nkauj tom ntej lossis kho kom zoo nkauj.
Cov yam ntxwv tseem ceeb ntawm HPMC
HPMC yog non-ionic cellulose ether tau los ntawm kev hloov kho cellulose. Nws muaj cov dej zoo solubility thiab tuaj yeem yaj sai sai hauv dej txias los tsim cov pob tshab los yog cov kua dej ntshiab colloidal. HPMC muaj hydroxyl thiab methyl pawg nyob rau hauv nws cov qauv molecular, yog li nws muaj zoo thickening, ncua kev kawm ntawv, dispersion, emulsification, bonding, zaj duab xis tsim, thiab kev tiv thaiv colloid functions. Tsis tas li ntawd, nws kuj muaj cov dej tuav tau zoo thiab ruaj khov, thiab tsis yooj yim cuam tshuam los ntawm qhov kub thiab txias hloov pH.
Lub luag haujlwm ntawm HPMC hauv putty
Thickener thiab tshem tawm tus neeg sawv cev: HPMC tuaj yeem ua kom cov viscosity ntawm putty slurry, ua kom yooj yim rau kev thov thiab ua kom zoo thaum siv, thaum tiv thaiv cov sedimentation ntawm pigments thiab fillers thaum lub sij hawm cia thiab kev tsim kho.
Tus neeg saib xyuas dej: HPMC muaj cov khoom tuav dej zoo, uas tuaj yeem txo cov dej poob thaum tsim kho, txuas ntxiv lub sijhawm qhib ntawm putty, thiab xyuas kom meej qhov sib xws thiab ruaj khov ntawm putty thaum ziab. Qhov no tuaj yeem tiv thaiv kom tsis txhob muaj cov kab nrib pleb hauv cov txheej txheej putty thiab txhim kho kev tsim kho kom zoo.
Lubricating nyhuv: HPMC tuaj yeem txhim kho lubricity ntawm putty, ua kom nws smoother thaum lub sij hawm tsim kho, txo kev tsim kho nyuaj, txo cov neeg ua hauj lwm, thiab txhim kho kev ua hauj lwm efficiency.
Binder: HPMC tuaj yeem txhim kho lub zog sib txuas ntawm putty thiab substrate, ua rau cov txheej txheej putty ntau ruaj khov rau ntawm phab ntsa nto thiab tiv thaiv kom tsis txhob poob.
Txhim kho kev tsim kho kev ua haujlwm: HPMC tuaj yeem txhim kho kev ua haujlwm ntawm putty, ua kom yooj yim rau kev sib kis thiab du thaum thov thiab khawb, txo cov cim kev tsim kho, thiab ua kom lub ntsej muag du thiab zoo nkauj ntawm phab ntsa.
Yuav siv HPMC li cas
Thaum lub sij hawm tsim cov txheej txheem ntawm putty, HPMC feem ntau yog ntxiv rau cov hmoov sib tov qhuav. Tus nqi ntawm qhov sib ntxiv sib txawv nyob ntawm seb hom putty thiab kev ua haujlwm yuav tsum tau ua. Feem ntau hais lus, tus nqi ntawm HPMC yog tswj ntawm li 0.2% ~ 0.5% ntawm tag nrho cov nyiaj putty. Txhawm rau kom ntseeg tau tias HPMC tuaj yeem ua tiav nws lub luag haujlwm, nws yog feem ntau yuav tsum tau ntxiv nws maj mam thaum lub sijhawm sib xyaw thiab ua kom nws sib xyaw ua ke.
Qhov zoo thiab qhov tsis zoo ntawm HPMC hauv putty
Qhov zoo:
Kev tiv thaiv ib puag ncig zoo: HPMC tsis muaj tshuaj lom thiab tsis muaj mob, tsis muaj cov hlau hnyav thiab cov khoom tsis zoo, ua tau raws li kev tiv thaiv ib puag ncig, thiab yog tus phooj ywg zoo rau cov neeg ua haujlwm tsim kho thiab ib puag ncig.
Kev ua haujlwm ruaj khov: HPMC muaj qhov hloov tau zoo rau kev hloov pauv hauv ib puag ncig xws li kub thiab pH, kev ua haujlwm ruaj khov, thiab tsis yooj yim rau deteriorate.
Kev siv dav: HPMC yog tsim rau ntau yam substrates thiab txheej txheej, thiab tuaj yeem ua tau raws li kev tsim kho sib txawv.
Qhov tsis zoo:
Tus nqi siab: Piv nrog rau lwm cov khoom siv tsoos, HPMC muaj tus nqi siab dua, uas tuaj yeem ua rau tus nqi tsim khoom ntawm putty.
rhiab heev rau cov dej zoo: HPMC muaj cov kev xav tau siab rau cov dej zoo, thiab qhov sib txawv ntawm cov dej zoo yuav cuam tshuam rau nws cov solubility thiab kev ua haujlwm.
Daim ntawv thov ntawm HPMC hauv putty muaj txiaj ntsig zoo. Nws tsis tsuas yog txhim kho kev tsim kho ntawm putty, tab sis kuj txhim kho lub cev thiab tshuaj lom neeg ntawm putty. Txawm hais tias nws cov nqi kuj tseem siab, kev txhim kho zoo thiab kev tsim kho yooj yim nws coj ua rau nws siv dav hauv cov haujlwm tsim kho zoo. Nrog rau kev nce qib ntawm cov khoom siv thev naus laus zis txuas ntxiv mus, cov ntawv thov kev cia siab ntawm HPMC hauv putty thiab lwm yam khoom siv hauv tsev yuav dav dua.
Post lub sij hawm: Aug-09-2024