Kev siv hydroxypropyl methylcellulose (HPMC) ua cov thickener nyob rau hauv putty mortars tau ib tug game-changer rau kev tsim kho kev lag luam. HPMC yog cov dej-soluble polymer uas muaj ntau yam zoo hauv kev txhim kho kev ua haujlwm ntawm cov hmoov putty. Kab lus no yuav piav qhia txog cov nyhuv thickening ntawm HPMC hauv putty mortars thiab vim li cas nws tseem ceeb heev rau kev tsim kho kev lag luam.
Putty hmoov yog cov khoom siv hauv tsev nrov siv los ua kom du nto xws li phab ntsa thiab qab nthab. Nws yog tsim los ntawm kev sib xyaw gypsum hmoov, talc thiab lwm yam khoom ntim nrog dej. Putty hmoov tseem hu ua kev sib koom ua ke, plaster lossis av nkos. Kev siv cov hmoov putty ua ntej pleev xim los yog wallpapering yog qhov tseem ceeb vim nws muab qhov chaw du rau qhov kawg ua tiav kom ua raws li.
Qhov kev sib tw loj tshaj plaws nrog cov hmoov putty yog nws qhov sib xws. Nws zoo li nyias thiab nyuaj rau kev thov thiab tswj. Qhov no yog qhov chaw HPMC tuaj rau hauv. Thaum ntxiv rau cov hmoov putty, HPMC ua cov thickener, txhim kho qhov kev ntxhib los mos thiab sib xws ntawm cov khoom sib xyaw. Nws txhim kho qhov adhesion thiab cohesion ntawm mortar, ua kom yooj yim rau kev thov thiab tswj, txo cov khoom pov tseg.
HPMC muaj cov khoom thickening zoo heev thiab tuaj yeem nqus dej ntau los tsim cov khoom zoo li gel. Hom thiab concentration ntawm HPMC siv tuaj yeem txiav txim siab qib ntawm thickening. HPMC kuj yog pH nyob ntawm, txhais tau tias nws cov nyhuv thickening txawv nyob ntawm acidity los yog alkalinity ntawm cov sib tov.
Ntxiv nrog rau qhov thickening, HPMC muaj lwm yam tseem ceeb hauv cov hmoov putty. Nws txo cov dej ntsiab lus hauv kev sib tov thiab ua kom lub zog ntawm cov khoom tiav. Nws kuj ua raws li surfactant, txo qhov nro ntawm cov hmoov putty. Nyob rau hauv lem, qhov no ua rau kom zoo dua thiab ua tiav kev pab cuam ntawm qhov chaw raug kho.
Lwm qhov txiaj ntsig tseem ceeb ntawm kev siv HPMC hauv cov hmoov putty yog nws lub peev xwm los txhim kho kev ua haujlwm ntawm kev sib tov. HPMC muaj cov khoom zoo rheological, uas txhais tau tias nws tuaj yeem tswj tau qhov sib xyaw ua ke thaum siv. Nws xyuas kom meej tias cov khoom sib tov sib xyaw ua kom zoo, sib kis tau yooj yim, thiab tsis sag los yog poob thaum thov.
Tseem muaj cov txiaj ntsig ib puag ncig rau kev siv HPMC hauv cov hmoov putty. HPMC yog cov khoom siv rov ua dua tshiab thiab biodegradable, uas txhais tau tias nws tawg lawm tom qab siv. Qhov no yog qhov tsis sib xws rau qee cov khoom siv hluavtaws uas tuaj yeem ua rau muaj teeb meem seem thiab ua paug rau ib puag ncig.
Putty hmoov ua los ntawm HPMC yog zoo ib yam nyob rau hauv kev ntxhib los mos thiab thickness, ua rau ib tug zoo saib nto. Nws muab ib tug du, txawm nto, txo qhov xav tau rau ntxiv sanding thiab filling. Qhov no txhais tau tias kev txuag nqi thiab kev ua tiav sai ntawm cov haujlwm tsim kho.
Hauv cov ntsiab lus, HPMC yog cov khoom tseem ceeb hauv cov hmoov putty kom ua tiav qhov xav tau sib xws, lub zog thiab ua haujlwm tau zoo. Nws cov thickening thiab rheological zog ua rau nws yog ib qho khoom siv zoo heev rau kev tsim kho kev lag luam, txhim kho kev ua haujlwm zoo thiab ua haujlwm zoo. Raws li cov khoom siv rov ua dua tshiab thiab biodegradable, HPMC kuj muaj txiaj ntsig ib puag ncig. Nws qhov ntxiv tau lees paub qhov du, txawm tias qhov chaw tiav qhov tseem ceeb hauv txhua qhov haujlwm hauv tsev.
Post lub sij hawm: Jul-04-2023