HPMC (Hydroxypropyl methylcellulose) yog cov khoom siv tshuaj lom neeg ntau yam siv dav hauv kev tsim kho thiab lwm yam kev lag luam. Nws yog ib qho uas tsis yog-ionic cellulose ether ua los ntawm kev hloov kho ntuj tsim cellulose. HPMC muaj ntau yam haujlwm xws li thickening, dej tuav, tsim zaj duab xis, lubrication, thiab adhesion, muab nws daim ntawv thov dav hauv kev tsim kho kev lag luam.
1. Kev ua haujlwm tseem ceeb ntawm HPMC hauv kev tsim kho
(1) Thickening nyhuv
Thaum HPMC yaj nyob rau hauv dej, nws muaj peev xwm ua rau kom cov viscosity ntawm cov kua. Cov nyhuv thickening no tseem ceeb heev hauv cov khoom siv hauv tsev. Piv txwv li, hauv cov cement mortar, HPMC tuaj yeem txhim kho cov viscosity ntawm cov mortar, txhim kho qhov yooj yim ntawm kev tsim kho, thiab ua rau kev tsim kho kom zoo dua qub.
(2) Kev ruaj ntseg dej
HPMC muaj cov khoom tuav dej zoo heev, uas ua rau cov dej evaporation qeeb hauv cov xwm txheej qhuav. Qhov no yog ib qho tseem ceeb tshwj xeeb tshaj yog nyob rau hauv cov ntaub ntawv cement-based los tiv thaiv cov mortar los yog pob zeb los ntawm kev ziab los yog poob lub zog vim poob dej sai heev ua ntej teeb tsa. Tsis tas li ntawd, kev tuav dej tuaj yeem txhim kho lub sijhawm qhib ntawm cov nplaum thiab cov hmoov putty, muab cov neeg ua haujlwm tsim kho ntau lub sijhawm los kho.
(3) Anti-sag khoom
Hauv kev tsim kho ntsug (xws li phab ntsa plastering lossis tiling), HPMC tuaj yeem tiv thaiv cov khoom los ntawm kev zawv zawg vim lub ntiajteb txawj nqus. Nws pab cov mortar los yog nplaum tuav kom zoo adhesion thiab ua kom muaj kev tsim kho du.
(4) Cov khoom ua yeeb yaj kiab zoo heev
HPMC tsim cov yeeb yaj kiab zoo ib yam tom qab ziab, cov khoom siv ua yeeb yaj kiab uas yog qhov tseem ceeb hauv cov txheej txheem dej tsis zoo thiab cov txheej txheem ntawm tus kheej. Cov zaj duab xis-tsim txheej tuaj yeem txhim kho cov dej tsis kam thiab huab cua tsis kam ntawm cov khoom.
(5) Lubrication thiab bonding cuam tshuam
HPMC tuaj yeem txhim kho lubricity ntawm cov ntaub ntawv tsim kho, txo kev sib txhuam thaum lub sij hawm tsim kho, thiab ua kom cov khoom sib kis tau yooj yim dua rau saum npoo ntawm substrate. Tsis tas li ntawd, HPMC tuaj yeem txhim kho cov khoom sib txuas thiab txhim kho kev sib raug zoo ntawm qee cov nplaum.
2. Kev siv HPMC hauv kev tsim kho tshwj xeeb
(1) Cement-raws li mortar
Nyob rau hauv plastering mortars, masonry mortars, thiab self-leveling mortars, HPMC tuaj yeem txhim kho cov dej tuav thiab dej ntawm cov tshuaj khib nyiab, yog li txhim kho kev tsim kho kev ua haujlwm thiab qhov kawg molding zoo. Tsis tas li ntawd, cov cuab yeej tiv thaiv sag ntawm HPMC ua kom cov mortar yuav tsis swb yooj yim thaum siv rau cov phab ntsa ntsug.
(2) Ceramic pobzeb nplaum
Cov ntsiab lus tseem ceeb rau cov pobzeb nplaum yog kev sib khi lub zog thiab yooj yim ntawm kev tsim kho. HPMC hauv pobzeb nplaum tuaj yeem tsis tsuas yog txhim kho qhov adhesion ntawm colloid, tab sis kuj txuas ntxiv lub sijhawm qhib, tso cai rau cov neeg ua haujlwm tsim kho kom lub sijhawm hloov kho ntev dua, yog li txhim kho kev tsim kho.
(3) Putty hmoov
HPMC muab cov hmoov putty zoo dej tuav thiab fluidity. Thaum lub sij hawm siv putty, dej tuav tiv thaiv lub hauv paus txheej los ntawm absorbing dej sai heev, xyuas kom meej tias cov putty dries tusyees, thiab txo cov kev pheej hmoo ntawm tawg thiab ntog.
(4) Waterproof txheej
Cov khoom ua yeeb yaj kiab ntawm HPMC yog qhov tsim nyog rau cov txheej txheem dej tsis zoo. Nws tuaj yeem pab cov txheej txheej txheej ntom thiab uniform waterproof txheej nyob rau saum npoo ntawm substrate los txhim kho cov qauv dej.
(5) Cov khoom siv gypsum
Hauv gypsum-based screeding thiab plastering cov ntaub ntawv, HPMC muab cov dej tuav zoo, tiv thaiv cov gypsum los ntawm kev poob zog vim tsis muaj dej ntau dhau. Nyob rau tib lub sijhawm, nws cov nyhuv thickening tuaj yeem txhim kho qhov yooj yim ntawm daim ntawv thov.
3. Qhov zoo thiab kev txwv ntawm HPMC
Qhov zoo:
Kev siv dav: Haum rau ntau yam substrates, xws li cement, gypsum, txiv qaub, thiab lwm yam.
Kev tiv thaiv ib puag ncig: Raws li cellulose derivative, HPMC muaj kev nyab xeeb, tsis muaj tshuaj lom thiab ua tau raws li kev tiv thaiv ib puag ncig.
Versatility: Muab ntau yam khoom xws li dej tuav, thickening, thiab zaj duab xis tsim, thiab tuaj yeem hloov kho raws li qhov xav tau ntawm cov xwm txheej sib txawv.
txwv:
Tus nqi: Tus nqi ntawm HPMC yog me ntsis siab dua piv rau qee cov khoom siv ib txwm muaj, uas tuaj yeem ua rau tus nqi tsim cov khoom siv hauv tsev.
Alkaline Resistance Limitations: HPMC kev ua tau zoo tuaj yeem raug degraded nyob rau hauv tej yam alkaline ib puag ncig, yuav tsum tau kuaj thiab kho rau ib puag ncig tshwj xeeb.
4. Lub peev xwm ntawm HPMC hauv kev tsim kho yav tom ntej
Raws li kev tsim kho kev lag luam qhov kev thov rau kev ua haujlwm siab, cov ntaub ntawv zoo ib puag ncig loj hlob, daim ntawv thov teb ntawm HPMC kuj tseem nthuav dav. Piv txwv li, nyob rau hauv cov vaj tse ntsuab thiab cov tsev tsis muaj zog, HPMC tuaj yeem siv los ua cov khoom siv tseem ceeb los tsim cov khoom siv hluav taws xob ntau dua thiab zoo ib puag ncig. Nyob rau tib lub sijhawm, nrog kev txhim kho thev naus laus zis, kev ua haujlwm thiab kev ua haujlwm ruaj khov ntawm HPMC yuav raug txhim kho ntxiv.
Raws li ib tug multifunctional additive,HPMCmuaj lub luag haujlwm irreplaceable nyob rau hauv kev tsim kho daim ntawv thov. Los ntawm cov cement mortar mus rau pobzeb nplaum, los ntawm cov hmoov putty mus rau waterproof txheej, nws yuav siv tau nyob rau hauv yuav luag tag nrho cov khoom siv tsev. Nrog nws cov khoom zoo heev, HPMC pab txhim kho kev tsim kho kev ua haujlwm thiab kev ua haujlwm ntev ntawm cov khoom siv hauv tsev thiab yog ib feem tseem ceeb ntawm kev tsim kho kev lag luam yav tom ntej.
Post lub sij hawm: Nov-11-2024