Daim ntawv thov HPMC hauv cov cement-based plasters thiab plasters

1. Txheej txheem cej luam ntawm HPMC
HPMC (HydroxyPropyyl methylulose, hydroxypropylulose) yog dej-soluble polymer compound ntawm ntuj hloov tshuaj ntawm ntuj. Nws muaj cov dej ua kom zoo, ua yeeb yaj kiab ua yeeb yaj kiab, cov khoom siv ua kom muaj zog, cov tshuaj, tshuaj, khoom noj khoom haus, khoom noj khoom haus. Hauv kev tsim kho kev tsim kho, tshwj xeeb tshaj yog nyob rau hauv cov caas-raws li cov txiv qaub, muaj cov khoom siv ua kom zoo, tuaj yeem ua qhov tseem ceeb ntxiv los txhim kho cov ntaub ntawv hauv tsev zoo.

2. Daim ntawv thov ntawm HPMC hauv Caa-raws plastering thiab stucco
Txhim kho kev tsim kho kev tsim kho
Thaum lub sijhawm tsim qauv ntawm cov txiv maas raws li plaster thiab stucco, HPMC tuaj yeem txhim kho cov kab txaij thiab kev tsim kho kom zoo dua qub, hnav khaub ncaws zoo dua. Cov kev ua tau zoo yog:

Ntev lub sijhawm qhib: HPMC tuaj yeem ncua sijhawm teem sijhawm ntawm Maas, yog li nce lub sijhawm qhib ntawm cov khoom siv. Qhov no tso cai rau cov neeg ua haujlwm tsim kho kom ua haujlwm rau lub sijhawm ntev dua, tshwj xeeb yog thaum ua kom cov Maas slurry los ntawm kev ua kom nrawm thiab cuam tshuam cov nyhuv kev tsim kho.
Txhim kho Adhesion: MAAs raws plaster thiab stucco feem ntau siv rau kev sib txuas ntawm cov chaw sib txawv. HPMC tuaj yeem txhim kho cov nplaum, txo cov txheej ua kom zoo nkauj, thiab ua kom cov nplaum ruaj khov ntawm txheej txheej stater lossis stucco txheej.

Txhim Kho Cov Khoom Siv Dej
Hauv cov cement-based plasters thiab plasters, cov dej-khaws lub luag haujlwm ntawm HPMC yog qhov tseem ceeb tshwj xeeb. Cov dej hauv Maas Slurry Evaporates sai sai, yog li tuaj yeem ua rau lub zog thiab qhuav ntawm txheej txheej txheej lossis tshuaj khib. Los ntawm kev txhim kho cov dej tuav tseg ntawm cov khoom siv, HPMC tuaj yeem ua kom qeeb ntawm cov dej txau thiab cug txheej thiab ua kom cov nyhuv tsim khoom.

Txhim khu cov tsis kam
Txij li Maas-raws plaster thiab stucco cov ntaub ntawv tsim sab hauv kev ntxhov siab, lawv nquag tawg, tshwj xeeb tshaj yog nyob hauv ib puag ncig qhuav nrog qhov loj sib txawv. HPMC tuaj yeem txo qhov tshwm sim ntawm kev tawg los ntawm kev txhim kho cov rheology thiab dej khaws cia ntawm cov cement slurry. Tsis tas li ntawd, cov nplaum txhim kho txoj kev sib raug zoo ntawm cov txheej txheem plaster thiab cov txheej txheej, txo cov nrib pleb sab nraud, thiab txhim kho cov kab nrib tawm ntawm cov txheej txheej plaster.

Txhim Kho Rheology
HPMC yog siv los ua cov tuab dua hauv cov plasters cement thiab plasters, uas tuaj yeem txhim kho cov yam ntxwv ntawm cov slurry. Nws tuaj yeem ua rau cov slurry muaj viscosity zoo dua thiab tsim nyog viscosity, zam cov teeb meem kev tsim kho uas muaj tuab heev lossis dhau. Piv txwv li, HPMC tuaj yeem txhim kho kev ncua ntawm slurry, yog li ntawd txoj kev zoo nyob rau hauv Maas faib, thiab xyuas kom meej thiab ntau dua cov kev tsim kho me me.

Ntxuav tsis tau
HPMC tuaj yeem txhim kho cov dej ntxuav cov dej xis ntawm cov cement-raws li plaster thiab stucco thiab txo cov dej yaig rau ntawm cov slurry nto nyob rau hauv cov dej noo. Yog hais tias cov cement slurry nto tsis muaj dej tsis kam, nws yuav cuam tshuam rau qhov ua kom tawv nqaij tawv thiab lub zog ntawm cov cement. HPMC tuaj yeem txhim kho cov dej tsis kam ntawm cov yaum cov plasters thiab plasters kom tsis txhob yaig dhau los ntawm cov dej hiav txwv sab nraud, yog li txhim kho lub dicable ntawm txheej.

3. DOSAGE THIAB COV NTAUB NTAWV QHIA TXOG HPMC
Qhov ntau npaum ntawm HPMC feem ntau yog nyob ntawm seb hom MAAs-raws render lossis stucco thiab nws cov kev xav tau. Feem ntau hais lus, tus nqi HPMC ntxiv yog li 0.1% -0.5% ntawm cov cement loj, tab sis cov nyiaj tshwj xeeb uas yuav tsum tau hloov kho raws li qhov xwm txheej tiag tiag. Piv txwv li, hauv qee cov ntawv thov tshwj xeeb, cov qib tshwj xeeb yuav tsum txhim kho cov khoom zoo nkauj, dej khaws cia, lossis rhuaology.

Thaum siv HPMC, koj yuav tsum tau them sai sai rau cov ntsiab lus hauv qab no:
Kev sib xyaw ua ke: HPMC muaj cov neeg pluag tsis zoo nyob rau hauv cov plasters plasters thiab plasters. Thaum siv nws, xyuas kom meej tias nws tau sib xyaw ua ke nrog lwm cov khoom xyaw kom tsis txhob agglomeration.
Kev Cia Siab: HPMC muaj qee qhov kev sib tw ntawm hygroscopicity thiab yuav tsum tau khaws cia rau hauv ib puag ncig qhuav kom tsis txhob ya raws kev txo qis rau nws ua tau zoo.
Kev koom tes nrog lwm cov kev sib ntxiv: Thaum siv cov kev sib ntxiv ntxiv, nws yog qhov tsim nyog los xyuas kom meej ntawm HPMC nrog lwm cov tshuaj sib xyaw ua ke kom tsis txhob cuam tshuam tag nrho cov kev ua tau zoo.

4. Cov txiaj ntsig thiab cov nyom ntawm HPMC

Qhov Zoo:
Kev tiv thaiv ib puag ncig: ua cov khoom siv polymer, HPMC muaj cov peev txheej ntev ntawm cov khoom raw thiab muaj tsawg lub nra ntawm ib puag ncig.
Txhim kho kev tsim kho: HPMC txhim kho kev tsim kho txoj kev tsim kho ntawm cov txiv qaub ua yas thiab stucco, ua cov txheej txheem kev tsim kho kom yooj yim dua thiab nrawm dua.
Txhim kho qhov durability: ua kom cov dej tsis kam ua kom tsis kam thiab dej tsis kam ua kom tsis kam ntawm cov cai ua kom tiav cov ntaub ntawv hauv tsev.

Sib tw:
Tus nqi teeb meem: Tus nqi HPMC yog tus HPMC yog qhov tseem ceeb, tshwj xeeb tshaj yog siv rau ntawm cov nplai loj, uas tuaj yeem nce cov nqi ntawm cov ntaub ntawv tag nrho.
Cov teeb meem sib txawv: HPMC muaj cov txiaj ntsig sib txawv nyob rau ntau hom Maas-based cov ntaub ntawv, thiab cov khoom siv tsis raug cai tuaj yeem cuam tshuam qhov kev ua tau zoo kawg nkaus.

Raws li kev ua tau zoo ntxiv kev tsim kho, HPMC muaj cov ntawv thov dav hauv Caas-raws Plaster thiab Stucco. Los ntawm kev txhim kho kev tsim kho kev ua tau zoo, nce dej khaws cia, txhim kho cov khoom zoo, thiab ua kom muaj kev txhim kho kom zoo rau cov khoom lag luam niaj hnub rau kev tsim kho cov khoom siv zoo thiab tsim kho. Txawm li cas los xij, daim ntawv thov ntawm HPMC kuj yuav tsum tau ua ke nrog kev siv tshuab ua ke nrog kev xaiv thiab piv rau qhov nws tau txais txiaj ntsig zoo hauv cov ntaub ntawv hauv tsev.