Dab tsi cuam tshuam rau kev tuav dej ntawm hydroxypropyl methyl cellulose?

Hpmc Hmoov Sivtuaj yeem ua tau zoo sib xws thiab muaj txiaj ntsig zoo hauv cov cement mortar thiab gypsum raws li cov khoom lag luam, qhwv tag nrho cov khoom siv thiab tsim cov yeeb yaj kiab ntub dej. Cov dej noo nyob rau hauv lub hauv paus yog maj mam tso tawm ntau lub sij hawm, thiab undergoes hydration cov tshuaj tiv thaiv nrog inorganic cementitious cov ntaub ntawv, yog li ua kom ntseeg tau lub zog thiab compressive zog ntawm cov ntaub ntawv.

Yog li ntawd, nyob rau hauv kub kub kev tsim kho lub caij ntuj sov, nyob rau hauv thiaj li yuav ua kom tiav cov dej tuav nyhuv, nws yog ib qhov tsim nyog yuav tau ntxiv cov nqi txaushydroxypropyl methyl celluloseRaws li cov qauv, txwv tsis pub cov teeb meem zoo xws li dej tsis txaus, txo lub zog, tawg, hollowing, thiab detachment tshwm sim los ntawm kev ziab sai yuav tshwm sim, thiab nws tseem yuav ua rau cov neeg ua haujlwm nyuaj hauv kev tsim kho. Raws li qhov kub thiab txias, qhov nyiaj ntawm hydroxypropylmethylcellulose tuaj yeem txo qis, thiab tib cov dej tuav cov nyhuv tuaj yeem ua tiav.

Kev tuav dej ntawm hydroxypropyl methyl cellulose yog cuam tshuam los ntawm qhov kub thiab txias thiab cov hauv qab no:

1. Homogeneity ntawm hydroxypropyl methyl cellulose

Homogeneoushydroxypropyl methyl cellulose, Methoxy pawg thiab hydroxypropyl yog sib npaug sib npaug, thiab cov dej tuav tau siab.

2. Kub ntawm HPMC thermal gel

Lub thermal gel muaj qhov kub thiab txias thiab dej tuav tus nqi; Ntawm qhov tsis sib xws, cov dej tuav tau qis.

3. Hydroxypropylmethylcelluloseviscosity

Thaum lub viscosity ntawmHPMCnce, cov dej tuav tus nqi kuj nce; Thaum cov viscosity nce mus txog ib theem, qhov nce hauv cov dej khaws cia yuav maj mam zuj zus.

4. Ntxiv tus nqi ntawm hydroxypropyl methyl cellulose

Qhov loj dua ntawm hydroxypropyl methyl cellulose ntxiv, qhov siab dua cov dej tuav thiab cov dej tuav tau zoo dua. Nyob rau hauv qhov ntau ntawm 0.25-0.6% ntxiv, cov dej tuav tus nqi nce sai nrog qhov nce ntxiv ntawm cov nyiaj ntxiv; Raws li tus nqi ntxiv ntxiv, qhov sib ntxiv ntawm cov dej tuav tau qeeb zuj zus