Kev cuam tshuam ntawm HPMC Viscosity thiab Fineness ntawm Mortar Performance

Lub viscosity thiab fineness ntawm Hydroxypropyl Methylcellulose (HPMC) tuaj yeem cuam tshuam rau kev ua haujlwm ntawm mortar. Nov yog yuav ua li cas txhua qhov parameter tuaj yeem cuam tshuam kev ua haujlwm mortar:

1. viscosity:
   • Kev tuav dej: Cov qib viscosity siab dua HPMC zoo li khaws cov dej ntau dua hauv cov tshuaj khib nyiab. Qhov kev tuav dej zoo no tuaj yeem txhim kho kev ua haujlwm, txuas ntxiv lub sijhawm qhib, thiab txo qhov kev pheej hmoo ntawm kev ziab ntxov ntxov, tshwj xeeb tshaj yog muaj txiaj ntsig zoo thaum kub thiab qhuav.
   • Txhim kho Adhesion: HPMC nrog cov viscosity ntau dua ua rau cov yeeb yaj kiab tuab dua thiab sib xyaw ua ke ntawm cov khoom sib txuas, ua rau txhim kho adhesion ntawm mortar Cheebtsam, xws li aggregates thiab binders. Qhov no ua rau kev txhim kho kev sib raug zoo thiab txo kev pheej hmoo ntawm delamination.
   • Txo Sagging: Cov viscosity siab dua HPMC pab txo qhov kev nyiam ntawm mortar kom sag lossis slump thaum thov ntsug. Qhov no yog qhov tseem ceeb tshwj xeeb hauv kev siv nyiaj siv ua haujlwm lossis ntsug qhov chaw uas cov mortar xav tau los tswj nws cov duab thiab ua raws li cov substrate.
   • Txhim khu kev ua haujlwm zoo: HPMC nrog qhov tsim nyog viscosity imparts qhov tsim nyog rheological zog rau mortar, tso cai rau kev sib xyaw yooj yim, siv, thiab siv. Nws txhim kho qhov sib kis thiab cohesiveness ntawm cov tshuaj khib, ua kom yooj yim sib sau ua ke thiab ua tiav.
   • Kev cuam tshuam rau cov ntsiab lus huab cua: HPMC viscosity siab heev tuaj yeem cuam tshuam qhov kev nkag ntawm huab cua hauv cov khoom sib tov, cuam tshuam rau nws qhov khov-thaw tsis kam thiab ua haujlwm ntev. Yog li ntawd, nws yog ib qho tseem ceeb kom sib npaug viscosity nrog rau lwm yam khoom kom ntseeg tau tias huab cua zoo.
2. Kev zoo:
   • Particle Dispersion: Cov khoom zoo ntawm HPMC feem ntau cuam tshuam ntau yam hauv cov tshuaj khib nyiab, ua rau kev txhim kho kev faib khoom thiab kev ua tau zoo ntawm cov polymer thoob plaws hauv qhov sib tov. Qhov no ua rau muaj kev ua haujlwm zoo ib yam, xws li dej tuav thiab adhesion.
   • Txo kev pheej hmoo ntawm Balling: Finer HPMC cov khoom muaj cov khoom ntub dej zoo dua thiab tsis tshua muaj kev tsim cov agglomerates lossis "pob" hauv cov tshuaj khib nyiab. Qhov no txo ​​qhov kev pheej hmoo ntawm kev faib tsis sib xws thiab ua kom muaj dej kom zoo thiab ua kom cov polymer.
   • Nto Smoothness: Finer HPMC hais tias yuav ua rau kom cov mortar smoother, txo qhov kev pheej hmoo ntawm defects xws li pinholes los yog tawg. Qhov no txhim kho qhov zoo nkauj ntawm cov khoom tiav thiab txhim kho tag nrho cov khoom zoo.
   • Compatibility nrog Lwm yam Additives: Finer HPMC particles yog sib xws nrog lwm yam additives feem ntau siv nyob rau hauv mortar formulations, xws li cementitious cov ntaub ntawv, admixtures, thiab pigments. Qhov no tso cai rau kom yooj yim koom ua ke thiab ua kom homogeneity ntawm qhov sib tov.

Hauv cov ntsiab lus, ob qho tib si viscosity thiab fineness ntawm HPMC ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab kev ua haujlwm mortar. Kev xaiv kom raug thiab kev ua kom zoo ntawm cov kev txwv no tuaj yeem ua rau kev txhim kho kev ua haujlwm, adhesion, sag resistance, thiab tag nrho cov khoom zoo. Nws yog ib qho tseem ceeb uas yuav tau txiav txim siab txog cov cai tshwj xeeb thiab cov xwm txheej thaum xaiv cov qib HPMC tsim nyog rau kev tsim cov mortar.