Thaum tsim cov xim, qhov viscosity ntawm HPMC (Hydroxypropyl Methylcellulose) ua lub luag haujlwm tseem ceeb hauv kev ua tiav qhov xav tau sib xws, kev sib kis, thiab kev ua haujlwm tag nrho.Tsab ntawv xov xwm no yog npaj los muab txoj hauv kev tshawb fawb los txiav txim siab HPMC viscosity zoo tshaj plaws rau kev tsim cov xim, xav txog yam xws li xim xim, hom kev thov, thiab cov yam ntxwv xim uas xav tau.
Nkag siab lub luag haujlwm ntawm HPMC hauv Paint Formulation:
HPMC ua hauj lwm raws li ib tug multifunctional additive nyob rau hauv cov xim formulations, pab rau viscosity tswj, dej tuav, thiab film-forming zog.Nws viscosity ncaj qha cuam tshuam qhov ntws thiab theem ntawm cov xim, nrog rau nws lub peev xwm los ua raws li ntau qhov chaw.
Xav txog Pigment Hom thiab Concentration:
Cov pigments sib txawv yuav tsum tau sib txawv ntawm HPMC viscosity kom ua tiav qhov zoo tshaj plaws dispersion thiab ruaj khov hauv cov xim pleev xim.Feem ntau, cov xim muaj kuab heev lossis hnyav, xws li titanium dioxide lossis hlau oxide, yuav xav tau kom muaj viscosity ntau dua HPMC kom muaj kev sib raug zoo thiab tiv thaiv kev teeb tsa.Cov xim sib dua, zoo li cov xim organic lossis cov xim pob tshab, yuav xav tau qis dua viscosity HPMC kom ntseeg tau tias muaj kev sib cais zoo yam tsis muaj kev cuam tshuam rau pob tshab.
Txiav txim siab siv txoj kev thiab xim yam ntxwv:
Txoj kev thov thiab cov yam ntxwv xim uas xav tau kuj cuam tshuam rau HPMC viscosity zoo.Piv txwv li:
ib.Txhuam / Roller Daim Ntawv Thov: Cov viscosity siab dua HPMC feem ntau nyiam rau cov txhuam los yog cov menyuam daim ntawv thov kom muaj kev tswj xyuas cov xim zoo dua, txo cov splattering, thiab txhim kho txhuam / cov menyuam tuav.
b.Daim Ntawv Thov Txau: Cov viscosity qis dua HPMC feem ntau yog siv rau kev siv tshuaj tsuag kom yooj yim atomization thiab ua tiav txawm tias muaj kev tiv thaiv.
c.Sag Resistance: Txhawm rau txhim kho sag kuj thiab tiv thaiv cov xim los ntawm dripping los yog sagging ntawm ntsug nto, siab dua viscosity HPMC yuav tsim nyog.
Ua Kev Ntsuas Rheological:
Txhawm rau txiav txim siab txog kev pom zoo HPMC viscosity rau kev tsim cov xim, tuaj yeem kuaj rheological.Cov kev ntsuas no ntsuas qhov ntws thiab deformation tus cwj pwm ntawm cov xim nyob rau hauv kev tswj xyuas.Cov txiaj ntsig tuaj yeem coj cov kev xaiv ntawm HPMC viscosity los ntawm kev xav txog yam xws li shear rate, shear stress, thiab viscosity profiles.
Kuaj thiab Kho:
Raws li cov txiaj ntsig kev ntsuas rheological, ntau yam ntawm HPMC viscosities tuaj yeem raug txheeb xyuas tias muaj peev xwm sib tw rau cov xim pleev xim.Ua cov kev sim me me los ntawm kev tsim cov qauv xim nrog sib txawv ntawm HPMC viscosities nyob rau hauv qhov kev txheeb xyuas.Ntsuas qhov tseem ceeb tsis xws li daim ntawv thov cov khoom, theem, sag kuj, thiab cov yam ntxwv ziab.Kho HPMC viscosity raws li xav tau kom ua tiav cov xim uas xav tau.
Kev txiav txim siab qhov zoo HPMC viscosity rau cov xim pleev xim yuav tsum muaj kev tshawb fawb txog yam xws li hom xim, daim ntawv thov, thiab cov yam ntxwv xim uas xav tau.Los ntawm kev nkag siab txog lub luag haujlwm ntawm HPMC, ua cov kev ntsuam xyuas rheological, thiab kuaj thiab kho cov qauv qauv, cov neeg tsim cov xim tuaj yeem ua tiav qhov zoo tshaj plaws viscosity los txhim kho cov xim ntws, qib, adhesion, thiab kev ua haujlwm tag nrho.Nws yog ib qho tseem ceeb los tawm tsam qhov sib npaug kom ua tiav cov yam ntxwv xim uas xav tau thaum tswj hwm cov kev xav tau ntawm daim ntawv thov txheej txheem.
