Cellulose ether yog cov khoom siv tshuaj tseem ceeb uas tau siv dav hauv cov hmoov mortar hauv kev tsim kho. Nws yog ib hom cellulose derivatives uas tau hloov kho los ntawm pawg hydroxyl ntawm cov cellulose molecules, suav nrog hydroxypropylmethylcellulose (HPMC), methylcellulose (MC), hydroxyethylcellulose (HEC), thiab lwm yam. Cov cellulose ethers muaj ntau yam kev ua haujlwm thiab cov khoom zoo heev, ua rau lawv muaj txiaj ntsig zoo hauv kev tsim mortars.
(1) Txhim kho kev tsim kho kev ua haujlwm
1. Txhim kho kev ua haujlwm
Cellulose ethers ua raws li thickeners thiab dej-retaining agents nyob rau hauv mortar. Nws tuaj yeem txhim kho cov viscosity thiab thixotropy ntawm mortar, ua kom yooj yim rau kev sib kis thiab du, yog li txhim kho qhov yooj yim thiab kev ua haujlwm ntawm kev tsim kho. Tsis tas li ntawd, cellulose ether tuaj yeem tiv thaiv cov mortar los ntawm kev sib cais thaum lub sij hawm tsim kho, ua kom muaj kev sib haum xeeb thiab zoo dua adhesion ntawm mortar.
2. Txhim kho qhov adhesion ntawm mortar
Cellulose ether tuaj yeem txhim kho qhov adhesion ntawm mortar rau lub substrate. Qhov no yog ib qho tseem ceeb tshwj xeeb rau cov txheej txheem xws li tiling los yog plastering uas yuav tsum tau ib tug nruj daim ntawv cog lus nrog lub substrate. Cellulose ether tso cai rau lub mortar kom muaj cov khoom adhesion zoo nyob rau hauv qhov chaw ntub lossis qhuav, tsis txhob muaj teeb meem ntawm kev tawg thiab tawg los ntawm qhov tsis txaus adhesion.
(2) Txhim kho lub cev muaj zog ntawm mortar
1. Txhim kho dej tuav
Kev tuav dej yog ib qho ntawm cov khoom tseem ceeb ntawm cellulose ether, uas tso cai rau lub mortar kom muaj dej txaus ua ntej hardening. Cov yam ntxwv no tuaj yeem tiv thaiv cov dej evaporation ntxov ntxov thiab txo cov dej poob hauv cov mortar, yog li txhim kho qhov txaus ntawm cov cement hydration cov tshuaj tiv thaiv thiab txhawb kev txhim kho lub zog thiab durability ntawm mortar.
2. Txhim kho lub zog ntawm mortar
Los ntawm cov dej tuav cov nyhuv ntawm cellulose ether, cov cement hauv mortar tuaj yeem ua kom muaj dej txaus los tsim cov khoom muaj zog hydration. Qhov no yuav pab txhim kho lub compressive thiab flexural zog ntawm lub mortar. Tsis tas li ntawd, cellulose ether kuj tseem tuaj yeem txo cov kab nrib pleb los ntawm shrinkage ntawm mortar thaum lub sij hawm hardening txheej txheem thiab tuav lub zuag qhia tag nrho lub zog thiab stability ntawm lub mortar.
3. Txhim kho khov-thaw tsis kam
Cellulose ethers nce qhov ntom ntawm mortar, ua rau nws tiv taus ntau dua rau lub voj voog khov-thaw. Qhov kev tiv thaiv khov-thaw no yog qhov tseem ceeb tshwj xeeb rau cov mortars siv nyob rau hauv qhov chaw txias, uas tuaj yeem ua kom ntev lub neej kev pab cuam ntawm lub tsev thiab txo cov nqi tu.
(3) Txhim kho ib puag ncig adaptability ntawm kev tsim kho
1. Txuas sijhawm qhib
Cellulose ethers tuaj yeem txuas ntxiv lub sijhawm qhib ntawm lub mortar, uas yog, lub sij hawm lub mortar tseem ua haujlwm tom qab nws tau tso. Qhov no yog tshwj xeeb tshaj yog zoo rau kev tsim kho nyob rau hauv high kub los yog qhuav ib puag ncig, txo cov teeb meem ntawm premature hardening ntawm mortar uas cuam tshuam rau kev tsim kho.
2. Txhim kho sag kuj
Thaum tsim kho ntawm qhov chaw ntsug, mortar nyiam swb los yog sag. Cellulose ether txhim kho qhov kev ua tau zoo ntawm cov tshuaj khib nyiab los ntawm kev ua kom tuab, kom ntseeg tau tias cov mortar tuaj yeem ruaj khov txuas mus rau qhov chaw ntsug thiab zam kev tsim kho.
(4) Ecological thiab economic kev pab cuam
1. Txhim kho kev siv cov khoom siv
Cellulose ether tuaj yeem txhim kho kev ua haujlwm thiab kev tsim kho zoo ntawm mortar, thiab txo cov khoom pov tseg thaum lub sijhawm tsim kho. Qhov no muaj qhov tseem ceeb ntawm kev lag luam rau kev tsim kho loj hauv kev tsim kho, uas tuaj yeem txo cov nqi khoom siv thiab txhim kho kev lag luam ntawm kev tsim kho.
2. Ib puag ncig tus phooj ywg
Cellulose ethers yog cov khoom siv bio-based thiab tsis tshua muaj kev cuam tshuam rau ib puag ncig thaum lawv tsim thiab siv. Tsis tas li ntawd, nws tuaj yeem txo cov pa phem thib ob thaum lub sijhawm siv tshuaj khib nyiab, xws li plua plav thiab pov tseg, thiab ua tau raws li cov kev xav tau ntawm cov tsev ntsuab niaj hnub.
(5) Cov qauv siv tshwj xeeb
1. Cov nplaum nplaum
Hauv cov nplais pobzeb nplaum, qhov sib ntxiv ntawm cellulose ether tuaj yeem txhim kho kev ua haujlwm zoo, khaws dej thiab kev sib txuas ntawm cov nplaum, thiab txhim kho kev sib raug zoo thiab kev tsim kho ntawm cov vuas ceramic.
2. Phab ntsa plastering mortar
Cellulose ether nyob rau hauv plastering mortar txhim kho kev ua haujlwm thiab kev ua haujlwm ntawm cov mortar, ua kom cov smoothness thiab nto zoo ntawm cov txheej plastering, thiab txo cov kev tsim kho thiab kho cov haujlwm.
3. Self-leveling mortar
Cellulose ether nyob rau hauv tus kheej-leveling mortar pab txhim kho lub fluidity thiab dej tuav ntawm lub mortar, tso cai rau nws txiav mus rau hauv av thiab txhim kho lub flatness thiab kev tsim kho ntawm av.
Hauv cov ntsiab lus, cellulose ether muaj qhov txiaj ntsig zoo hauv kev siv tshuaj khib nyiab hauv kev tsim kho. Nws tsis tsuas yog txhim kho kev tsim kho kev ua tau zoo thiab lub cev lub cev ntawm cov mortar, tab sis kuj txhim kho cov kev hloov pauv ib puag ncig thiab cov txiaj ntsig kev lag luam ntawm kev tsim kho. Daim ntawv thov ntawm cellulose ether txhim kho qhov zoo thiab kav ntev ntawm lub tsev mortar thiab txhawb txoj kev loj hlob ntawm kev tsim kho vaj tse. Nrog rau kev txhim kho txuas ntxiv ntawm kev tsim kho thev naus laus zis, cellulose ether yuav muaj cov ntawv thov dav dav hauv mortar thiab dhau los ua cov khoom tseem ceeb thiab tseem ceeb rau kev tsim kho niaj hnub.
Post lub sij hawm: Jul-02-2024