Txhim kho qhov cuam tshuam ntawm HPMC ntawm Cement-based Materials
Hydroxypropyl methylcellulose (HPMC) yog siv dav hauv cov khoom siv cement xws li mortars thiab pob zeb. Qhov sib ntxiv ntawm HPMC tuaj yeem muab ntau yam kev txhim kho ntawm cov ntaub ntawv no, suav nrog:
- Kev tuav dej: HPMC tuaj yeem txhim kho lub peev xwm tuav dej ntawm cov khoom siv cement. Qhov no yog vim hais tias HPMC tuaj yeem tsim ib zaj duab xis nyias ntawm cov cement hais, uas ua rau cov dej ntws qeeb qeeb thaum lub sij hawm hydration. Qhov no ua rau kev txhim kho kev ua haujlwm thiab txo qhov tawg ntawm cov khoom.
- Txhim kho adhesion: HPMC tuaj yeem txhim kho qhov adhesion ntawm cov khoom siv cement rau cov substrates sib txawv. Qhov no yog vim HPMC tuaj yeem tsim kev sib raug zoo nrog ob qho tib si cov cement thiab cov substrate, uas txhim kho kev sib raug zoo ntawm ob qho tib si.
- Txhim kho lub zog: Qhov sib ntxiv ntawm HPMC tuaj yeem txhim kho cov khoom siv ntawm cov khoom siv cement. Qhov no yog vim HPMC tuaj yeem txo cov ntsiab lus ntawm cov dej hauv qhov sib tov, uas ua rau kom muaj zog ntxiv thiab txhim kho lub zog ntawm cov khoom.
- Txo cov shrinkage: HPMC kuj tuaj yeem pab txo qis cov khoom siv cement-based thaum ziab thiab kho. Qhov no yog vim HPMC tuaj yeem txhim kho cov dej khaws cia ntawm cov khoom siv, uas txo cov dej poob los ntawm evaporation.
- Txhim kho kev ua haujlwm: HPMC tuaj yeem txhim kho kev ua haujlwm ntawm cov khoom siv cement los ntawm kev txhim kho lawv cov khoom ntws. Qhov no ua rau cov khoom sib xyaw ua ke yooj yim dua, twj, thiab siv tau, uas ua rau muaj kev sib txuam ntau dua thiab sib xws.
Zuag qhia tag nrho, qhov sib ntxiv ntawm HPMC tuaj yeem muab ntau yam kev txhim kho ntawm cov khoom siv cement, suav nrog kev txhim kho dej tuav, txhim kho adhesion, txhim kho lub zog, txo qis, thiab txhim kho kev ua haujlwm. Cov txiaj ntsig no tau ua rau HPMC yog cov khoom siv nrov tshaj plaws hauv kev tsim kho kev lag luam rau ntau yam kev siv, suav nrog cov tshuaj txhuam hniav, cov nplais nplaum, thiab cov sib xyaw ua ke ntawm tus kheej.
Post lub sij hawm: Mar-21-2023