HPMC rau Gypsum-based cov ntaub ntawv hauv tsev

1. Taw qhia HPMC
HydroxyPropyyl methylcellose (HPMC) yog ib qho tseem ceeb dej-soluble cov polymer compound siv dav siv hauv kev tsim kho, tshuaj, khoom noj txhua hnub thiab lwm thaj teb. Nws yog tsim los ntawm cov tshuaj hloov kho cov pa hluav taws xob thiab muaj cov dej solubility zoo, thickening, dej khaws cia, kua nplaum, zaj duab xis-forming thiab lubrication cov khoom. Hauv cov ntaub ntawv hauv tsev, HPMC tshwj xeeb tau siv los ua kev ntxiv, tshwj xeeb tshaj yog hauv gypsum-based cov ntaub ntawv tsim tsev.

2. Lub luag haujlwm ntawm HPMC hauv Gypsum-based cov ntaub ntawv tsim tsev
Gypsum-based cov ntaub ntawv tsim tsev, xws li gypsum putty, gypsum board, yog maj mam tau siv dav siv, Pauv vim muaj kev phom sij thiab ib puag ncig tus phooj ywg. Cov lus qhia ntawm HPMC tuaj yeem txhim kho lub cev thiab tsim kho lub cev ntawm cov ntaub ntawv no, ua rau lawv yooj yim dua thiab ruaj khov.

2.1 Thuab nyhuv
Cov nyhuv tuab ntawm HPMC yog ib qho ntawm nws txoj haujlwm tseem ceeb hauv Gypsum-based cov ntaub ntawv tsim tsev. Nws tseem ceeb nce lub viscosity ntawm gypsum slurry, ua rau nws yooj yim rau lis thiab thov. Txoj haujlwm ntawm cov tuab tuaj yeem khaws cov khoom siv gypsum nyob hauv cov txheej txheem kev tsim kho, txo cov dej nag, kom tsis txhob muaj cov khaubncaws sab nraud povtseg, thiab ua kom muaj kev tsis ncaj ncees, thiab paub meej txog kev tsim kho.

2.2 Dej Ua Ke
HPMC muaj cov dej ua haujlwm zoo heev thiab tuaj yeem txo cov dej poob rau hauv cov khoom siv ntawm gypsum-raws li lub sijhawm kho cov txheej txheem. Dej khaws cia yog ib qho tseem ceeb rau kev ua kom muaj kev ua tau zoo ntawm gypsum cov ntaub ntawv. Kev ua dej ntau dhau yuav ua rau cov khoom siv kom ua ntej ntxov, uas yuav cuam tshuam lub zog thiab kev ua tau zoo, thiab tseem yuav ua rau cov kab nrib pleb. Los ntawm kev ntxiv HPMC, cov khoom siv gypsum tuaj yeem khaws cov dej noo txaus rau kev kho kom huv thiab txhim kho lub zog thiab ua kom zoo.

2.3 Txhim kho kev tsim kho kev tsim kho
HPMC tseem tuaj yeem txhim kho kev tsim kho kev tsim kho ntawm gypsum-based cov ntaub ntawv, tshwj xeeb tshaj yog hauv kev txhim kho cov haujlwm ua haujlwm. Nws muab cov slurry zoo thixotropy thiab ua kom yooj yim daim ntawv thov ntawm slurry thaum kev tsim kho. Nws lubrication effect kuj tseem tuaj yeem ua rau tsim kho cov smoother, txo cov kev sib txhuam ntawm cov cuab yeej thiab cov ntaub ntawv, thiab ntxiv txhim kho kev ua haujlwm thiab ua haujlwm zoo. Rau ob phau ntawv kev tsim kho thiab tshuab txau, HPMC tuaj yeem txhim kho kev ua haujlwm ua haujlwm.

2.4 Kuj rau Sagging
Nyob rau hauv kev tsim kho ntsug xws li phab ntsa lossis ceilings, gypsum cov ntaub ntawv yog nquag mus sagging vim lub ntiajteb txawj nqus, tshwj xeeb yog thaum tsim cov txheej tuab tuab. Lub thickening thiab tsev-txhim kho cov khoom ntawm HPMC tuaj yeem txhim kho cov sagging tsis kam ntawm gypsum slurry thiab tswj kev sib xyaw ntawm cov duab thiab tuab tom qab kev tsim kho.

2.5 Txhim kho kev tawg
Cov ntaub ntawv uas muaj cov khoom siv yuav txhim kho cov kab nrib pleb vim yog dej evaporation thaum lub sijhawm ua kom qhuav. Cov dej ua haujlwm kom ua tau zoo ntawm HPMC tsis yog txuas lub sijhawm qhib ntawm cov dej sab hauv, yog li kuj txo qhov kev sib tsoo thiab ua kom muaj kev ruaj ntseg thiab ruaj khov ntawm cov khoom siv gypsum. Kev Pabcuam Lub Neej.

3. Yuav ua li cas siv HPMC
Hauv Gypsum-based cov ntaub ntawv tsim tsev, tus nqi HPMC feem ntau yog nyob nruab nrab 0.1% thiab 1% ntawm cov mis tag nrho. Qhov kev siv tshwj xeeb sib txawv raws li cov ntawv thov sib txawv thiab kev ua tau zoo. Piv txwv li, thaum siv hauv gypsum putty, HPMC yog siv los txhim kho nws cov dej kom ua tiav thiab kev tsim kho, yog li tus nqi yuav tsawg; Thaum nyob rau hauv gypsum tshuaj khib, tshwj xeeb tshaj yog nyob rau hauv cov qauv tshuaj uas yuav tsum tau ua kom zoo tshaj tawm, tus nqi HPMC siv tau me ntsis siab dua. Ntxiv rau, lub solubility ntawm HPMC kuj muaj kev cuam tshuam zoo rau kev siv cov nyhuv siv. Nws feem ntau yuav tsum muaj tusyees dispersed thaum npaj gypsum slurry kom ntseeg tau tias nws tuaj yeem siv nws cov nyhuv tag nrho.

4. Cov yam cuam tshuam rau kev ua haujlwm ntawm HPMC
Cov kev ua tau zoo ntawm HPMC cuam tshuam los ntawm ntau yam, suav nrog nws cov leeg ua ke, piv txwv li cov qib molecy, lub zog dua cov nyhuv tuab ntawm HPMC; Qhov siab dua qib siab ntawm kev hloov pauv, nws zoo dua nws solubility thiab dej khaws cia. Yog li ntawd, ntawm Gypsum-based cov ntaub ntawv tsim tsev, nws yog qhov tseem ceeb los xaiv cov qauv HPMC tsim nyog.

Ib puag ncig cov xwm txheej xws li kub thiab lwm yam khoom xyaw thiab lwm yam khoom xyaw hauv cov khoom siv gypsum kuj tseem tuaj yeem cuam tshuam rau HPMC. Piv txwv li, hauv qhov chaw siab-ib puag ncig, kev sib cais thiab cov dej tuav tseg ntawm HPMC yuav poob. Yog li ntawd, hauv kev tsim kho tiag tiag, cov mis yuav tsum tau kho kom haum raws li qhov chaw.

5. Kev thov cov txiaj ntsig ntawm HPMC hauv Gypsum-based cov ntaub ntawv
Daim ntawv thov ntawm HPMC hauv Gypsum cov ntaub ntawv muaj ntau qhov zoo thiab tuaj yeem txhim kho kev ua haujlwm ntawm cov khoom siv thiab cov khoom lag luam zoo:

Txhim kho cov khoom siv zog: HPMC txhim kho cov ntaub ntawv khaws cia ntawm gypsum cov ntaub ntawv thiab ua rau cov tshuaj tiv thaiv hydring ntau dua, yog li kev txhim kho lub zog ntawm cov khoom.
Txhim kho cov txheej txheem kev tsim kho: cov cua thickening thiab lubricating cuam tshuam thiab lubricating cuam tshuam thiab txhim kho kev txhim kho lub smoothness thiab txo sagging thiab sagging.
Lub sijhawm txuas ntxiv: HPMC txuas lub sijhawm qhib ntawm cov khoom siv los ntawm kev khaws cov slurry kom zoo noo, muab cov chaw ua haujlwm siv ntxiv rau kev hloov kho.
Txhim kho nto tiav: HPMC tuaj yeem txo cov kab nrib pleb thiab npuas hauv gypsum cov ntaub ntawv, ua kom muaj cov khoom du thiab tiaj tiaj tom qab ziab.

Daim ntawv thov ntawm hydroxypropyf methylcellose (HPMC) hauv Gypsum-based tsev cov khoom siv tsis tsuas yog siv cov khoom siv lub cev, tab sis kuj txhim kho kev ua haujlwm zoo thiab ua haujlwm zoo. Nws cov haujlwm ntawm thickening, dej tuav, thiab tawg ua kom tsis kam ua gypsum-based cov ntaub ntawv ntau dua qub siv hauv cov tsev niaj hnub no. Los ntawm kev xaiv HPMC qauv tsim nyog thiab cov qauv tsim qauv thiab cov neeg ua haujlwm tsim kho tau siv cov xwm txheej zoo tshaj plaws hauv cov xwm txheej sib txawv thiab ruaj khov.