Pobzeb nplaum yog siv dav hauv kev tsim kho niaj hnub. Lawv lub luag haujlwm tseem ceeb yog ua raws cov vuas luaj rau ntawm lub tsev kom ntseeg tau tias cov vuas yuav tsis poob los yog hloov. Cellulose ether, raws li cov khoom siv ntxiv, yog siv dav hauv cov nplais nplaum los txhim kho lawv cov kev ua tau zoo.
Basic Cheebtsam ntawm pobzeb nplaum
Cov nplaum nplaum feem ntau yog tsim los ntawm cov cement, xuab zeb, cellulose ether, kua nplaum hmoov thiab lwm yam khoom ntxiv. Cement yog siv los ua cov ntaub ntawv tseem ceeb los muab lub hauv paus muaj zog; xuab zeb yog siv los ua cov muab tub lim kom nce ntim thiab txo qhov shrinkage; cellulose ether thiab roj hmab hmoov yog siv los hloov kho kev ua haujlwm thiab lub cev ntawm cov nplaum.
Lub luag haujlwm ntawm cellulose ethers
Cellulose ether yog ib qho polymer compound muab rho tawm los ntawm ntuj cellulose. Nws lub luag haujlwm tseem ceeb yog:
Kev tuav dej: Cellulose ether tuaj yeem txhim kho lub peev xwm khaws dej ntawm cov nplais pobzeb thiab txo cov dej evaporation, yog li ua kom muaj dej txaus ntawm cov cement thiab txhim kho lub zog.
Cov nyhuv Thickening: Cellulose ether ua rau cov nplaum muaj thixotropy zoo thiab zawv zawg tsis kam, uas ua rau kev tsim kho thiab txhim kho kev sib raug zoo.
Txhim kho kev ua haujlwm: Cellulose ether tuaj yeem ua rau cov nplaum nplaum zoo dua thiab yooj yim rau kev khiav lag luam thaum lub sijhawm tsim kho, txhim kho kev tsim kho kom zoo thiab zoo.
Cov txiaj ntsig ntawm cellulose ether cov ntsiab lus ntawm kev ua haujlwm ntawm cov nplais pobzeb adhesives
Kev tuav dej: nce cov ntsiab lus ntawm cellulose ether yuav txhim kho cov dej tuav ntawm cov nplaum. Thaum lub sij hawm cov txheej txheem cement hydration, dej tuav yog ib qho tseem ceeb los xyuas kom meej hydration txaus ntawm cov cement. Qhov siab dua qib ntawm hydration, ntau hydration cov khoom tsim los ntawm cov cement thiab ntau dua cov nyiaj ua haujlwm. Yog li, qhov tsim nyog ntawm cellulose ether pab txhim kho lub zog thiab ua haujlwm ntawm cov nplaum.
Bonding zog: Raws li cov ntsiab lus ntawm cellulose ether nce, lub zog sib txuas ntawm cov nplaum yuav nce ntxiv. Qhov no yog vim hais tias cov dej tuav thiab thickening cuam tshuam ntawm cellulose ether tso cai rau cov nplaum kom zoo dua nkag mus rau hauv cov vuas luaj ceramic thiab substrates, txhim kho qhov sib txuas sib txuas. Txawm li cas los xij, cov ntsiab lus ntawm cellulose ether siab dhau yuav ua rau muaj viscosity ntau dhau, cuam tshuam rau kev ua haujlwm, thiab tseem tuaj yeem ua rau tawg ntawm cov nplaum thaum lub sij hawm ziab, uas ua rau txo cov kev sib txuas ntawm lub zog.
Ua haujlwm tau zoo: Cellulose ether muaj feem cuam tshuam rau kev ua haujlwm ntawm cov nplaum. Tus nqi tsim nyog ntawm cellulose ether tuaj yeem ua rau cov nplaum yooj yim rau kev thov thiab kho thaum lub sij hawm tsim kho, txo qhov slippage ntawm ceramic vuas, thiab txhim kho kev tsim kho. Cov ntsiab lus ntawm cellulose ether tsawg dhau yuav ua rau cov nplaum nplaum tsis txaus viscosity thiab plam yooj yim; thaum siab heev cellulose ether cov ntsiab lus yuav ua rau cov nplaum nplaum heev thiab nyuaj rau tsim.
Slip resistance: Rau kev tsim cov vuas phab ntsa, slip resistance yog ib qho tseem ceeb qhia. Cellulose ether tuaj yeem txhim kho qhov ua tau zoo ntawm cov nplaum nplaum, kom ntseeg tau tias cov vuas yuav tsis swb tom qab muab tshuaj txhuam. Kev tshawb fawb qhia tau hais tias qhov tsim nyog ntawm cellulose ether tuaj yeem txhim kho qhov muaj peev xwm tiv thaiv plam ntawm cov nplaum, thaum cov cellulose ether ntau dhau yuav ua rau kev tsim kho nyuaj vim tias cov kua nplaum ntawm cov nplaum tsawg dhau.
Kev sim thiab tsom xam
Txhawm rau tshawb nrhiav qhov tshwj xeeb cuam tshuam ntawm cellulose ether cov ntsiab lus ntawm kev ua haujlwm ntawm cov nplais pobzeb nplaum, cov kev sim hauv qab no tuaj yeem ua:
Cov ntaub ntawv sim: Siv tib hom thiab qauv ntawm cov cement, xuab zeb, thiab roj hmab hmoov, thiab ntxiv cov ntsiab lus sib txawv ntawm cellulose ether (xws li 0.1%, 0.2%, 0.3%, 0.4%, 0.5%).
Test Method:
Kev ntsuas dej tuav: Ntsuas cov dej tuav lub peev xwm ntawm cov nplaum nyob rau hauv cov khoom sib txawv ntawm cov cellulose ether los ntawm cov ntawv lim dej nqus dej.
Bonding zog xeem: Raws li lub teb chaws tus qauv txoj kev, lub tensile bonding zog ntawm cov nplaum nyob rau hauv txawv cellulose ether ntsiab lus yog kuaj.
Constructability test: Ntsuas qhov yooj yim ntawm daim ntawv thov thiab plam tsis kam ntawm cov nplaum los ntawm kev tsim kho tiag tiag.
Kev txheeb xyuas cov ntaub ntawv: Kev txheeb xyuas cov ntaub ntawv sim, kos cov kev sib raug zoo ntawm cov cellulose ether cov ntsiab lus thiab cov ntsuas kev ua tau zoo xws li dej tuav, kev sib khi lub zog, thiab kev ua haujlwm kom pom qhov zoo ntawm cellulose ether cov ntsiab lus.
Cellulose ether cov ntsiab lus muaj feem cuam tshuam rau cov dej tuav, kev sib txuas lub zog thiab kev ua haujlwm ntawm cov nplais pobzeb nplaum.
Tus nqi tsim nyog ntawm cellulose ether tuaj yeem txhim kho qhov ua tau zoo ntawm cov nplaum, tab sis siab dhau ntawm cov ntsiab lus ntawm cellulose ether yuav ua rau cov viscosity ntau dhau ntawm cov nplaum, cuam tshuam rau kev ua haujlwm thiab kev sib raug zoo.
Los ntawm kev sim cov ntaub ntawv tshawb fawb, qhov zoo tshaj plaws cellulose ether cov ntsiab lus tuaj yeem txiav txim siab kom ua tiav qhov kev pom zoo ntawm cov khoom nplaum.
Tsim nyog tswj qhov sib ntxiv ntawm cellulose ether yog tus yuam sij rau kev txhim kho kev ua haujlwm ntawm cov nplais pobzeb nplaum. Cov kev tshawb fawb yav tom ntej tuaj yeem tshawb nrhiav qhov cuam tshuam ntawm ntau hom cellulose ethers ntawm cov khoom nplaum los tsim cov khoom siv nplaum nplaum zoo dua.
Post lub sij hawm: Lub Xya hli ntuj-31-2024