1. Txheej txheem cej luam ntawm HPMC
HPMC (HydroxyPropyyl methylulose, Hydroxypropylulose methylcellose) yog qhov dav siv hauv kev tsim kho, tshuaj, tshuaj pleev ib ce thiab lwm thaj teb. Cov qauv molecular ntawm HPMC muaj dej-soluble hydroxyprropyl thiab methyl pawg, ua duab ua yeeb yam, ua yeeb yaj kiab, tso dej, dispersion thiab lwm yam khoom. Hauv kev tsim kho kev tsim kho, HPMC, ua qhov tseem ceeb ntxiv, feem ntau yog siv nyob rau hauv kev tsim cov qhob Tshwj xeeb tshaj yog nyob rau hauv lub tshuab-blasted cug, ntxiv rau HPMC tuaj yeem txhim kho kev tsim kho kev ua haujlwm thiab kev tshuaj khib.
2. Lub luag haujlwm ntawm HPMC nyob rau hauv lub tshuab-blasted cug
Tshuab-Blasted Cug yog txoj kev tsim kev tsim qauv uas siv cov khoom txau txau rau hauv phab ntsa lossis lwm qhov chaw ua haujlwm. Piv nrog tsoos kev sib xyaw plastering, nws muaj qhov zoo ntawm kev ua haujlwm siab thiab txuag kev txuag. Txawm li cas los xij, tshuab-blasted cug feem ntau ntsib qee qhov teeb meem thaum cov txheej txheem kev tsim kho, xws li tshuaj khib tsis zoo, thiab tsis txaus ua yeeb yam. Cov teeb meem no yuav cuam tshuam rau kev ua haujlwm zoo thiab kev ua tau zoo.
Lub luag haujlwm tseem ceeb ntawm HPMC nyob rau hauv lub tshuab-blasted cug xws li:
Thickening cov nyhuv: raws li tus neeg sawv cev tuab, HPMC tuaj yeem txhim kho lub tshuaj khib nyiab ntawm lub tshuaj khib nyiab, yog li ntws thaum lub sij hawm txau ua kom qhuav.
Dej khaws cia: HPMC muaj cov dej ua kom zoo ua kev ua tau zoo, ua kom cov nplaum ntawm lub tshuaj tua kab, thiab cov nplaum ntawm cov kab nrib pleb thiab cov cua sib tsoo.
Txhim kho cov nplaum: HPMC tuaj yeem txhim kho cov nplaum ntawm lub cug, txhim kho cov nplaum thiab xyuas kom meej, thiab xyuas kom meej tias cov tshuaj khib nyiab txuas rau cov chaw tsim khoom.
Txhim kho kev tsim kho kev tsim kho: HPMC tuaj yeem txhim kho cov tshuaj khib nyiab kev tsim kho, ua haujlwm yooj yim rau kev ua haujlwm, nws tuaj yeem ua kom muaj kev sib txig sib luag thiab txoj kev sib luag ntawm kev txau.
3. Qhov kev faib ua feem ntawm HPMC nyob rau hauv lub tshuab-blasted cug
Qhov kev faib ua feem ntawm HPMC muaj qhov tseem ceeb uas cuam tshuam rau kev ua yeeb yam ntawm tshuab-blasted cug. Qhov tsim nyog HPMC tsis tuaj yeem txhim kho kev tsim kho ntawm lub tshuaj khib, tab sis kuj ua kom nws cov nyhuv ua tiav zaum kawg. Feem ntau, tus nqi HPMC ntxiv yuav tsum tau hloov kho raws li cov ntaub ntawv tshwj xeeb cortula thiab yuav tsum tau tsim qauv. Feem ntau hais lus, tus nqi ntawm HPMC feem ntau yog nruab nrab 0.1% thiab 0.5% ntawm qhov hnyav ntawm cov cement. Cov kev sib xws yuav tsum xav txog qhov hauv qab no:
Hom tshuaj khib: sib xyaw ntau hom tshuaj khib (xws li cug cug, cov tshuaj khib sab nrauv, thiab lwm yam) muaj cov kev xav tau sib txawv rau HPMC. Rau sab nrauv phab ntsa rwb thaiv tsev chourphet cug lossis cov tshuaj tua hluav taws xob siab zog HPMC yuav tsum ua kom nws cov nplaum thiab dej khaws cia.
Huab cua huab cua: thaum tsim nyob rau hauv qhov kub thiab txias ib puag ncig thiab qhuav ib puag ncig, dej hauv lub tshuaj khib nyiab sai sai. Kev nce qib tsim nyog nyob rau hauv tus nqi HPMC tuaj yeem tiv thaiv cov tshuaj khib los ntawm ziab. Nyob rau hauv ib puag ncig vaum, tsim nyog txo tus nqi ntawm HPMC siv tau tuaj yeem pab zam kom tsis txhob los ntshav los ntawm kev siv dej ntau hauv lub cug.
Txoj Kev Siv Qauv: Cov qauv kev ua haujlwm sib txawv muaj cov kev xav tau sib txawv rau cov kua txiv thiab nplaum ntawm cug. Yog tias siv tshuaj tsuag siab siv, cov feem ua feem ntawm HPMC yuav tsum tau muab kho kom ntseeg tau tias yog cug cug ua kom zoo dua qub thiab txau ruaj khov.
Cov ntaub ntawv yooj yim: cov khoom ntawm cov khoom sib txawv ntawm cov xis mas, pob zeb yuav tsum muaj sib txawv, thiab lwm yam kev sib txawv ntawm HPMC yuav tsum tau ua kom zoo raws li qhov tseeb ntawm cov ntaub ntawv.
4. Cov ntawv thov piv txwv ntawm HPMC nyob rau hauv lub tshuab-blasted cug
Hauv kev siv cov kev siv, HPMC tau dav siv nyob rau ntau hom tshuab-blasted mortars. Piv txwv li, sab nrauv phab ntsa rwb thaiv tsev kab sib xyaw, hpmc ua kom zoo dua ntawm cov nplaum thiab cov dej tsis yeem ntawm cov khov kho thiab ruaj khov ntawm txheej; Hauv cov dej txig, HPMC tuaj yeem txhim kho cov dej tsis kam ntawm cov tshuaj khib. Permeability kom ntseeg tau tias phab ntsa saum npoo av tsis yaig los ntawm dej; Nyob rau hauv cov cug cug zoo nkauj, HPMC tuaj yeem txhim kho lub tiaj huv thiab kev tsim kho ntawm lub tshuaj khib thiab txhim kho cov haujlwm ua haujlwm thaum lub sijhawm txau.
Hauv cov ntawv thov no, kev sib npaug ntawm HPMC tsis yog nyob ntawm lub hom phiaj, tab sis kuj yuav siv ntau yam xws li kev tsim kho cov cuab yeej siv, chaw tsim kho, thiab siv thev naus laus zis. Los ntawm kev txheeb xyuas kev faib tawm, cov tshuaj khib yuav ua kom muaj kev ua kom muaj kev ua tau zoo thaum lub sijhawm ua haujlwm thiab ua tiav cov nyhuv xav tau.
Raws li ib qho tseem ceeb tsim Additive, HPMC yog siv nyob rau hauv tshuab-blasted cug. Nws tseem txhim kho kev tsim kho thiab cov nyhuv kawg ntawm tshuab-blasted cug los ntawm kev txhim kho fluentity, adhesion thiab dej tuav ntawm cug. Txhawm rau kom ua tiav cov nyhuv zoo tshaj plaws, kev sib npaug ntawm HPMC yuav tsum tau hloov kho raws li ntau yam xws li hom cug, kev kho huab cua, thiab txoj kev tsim chaw tsim chaw. Hauv kev siv cov tswv yim, muaj kev tshawb fawb thiab tsim nyog HPMC tsim nyog tuaj yeem ua kom zoo nkauj thiab tsim kho cov tshuaj khib kev ua haujlwm hauv kev tsim kho niaj hnub no.
Lub sijhawm Post: Feb-15-2025