Kev tsim cov gypsum-based self-leveling mortars yuav tsum tau siv ntau yam khoom siv raw, txhua qhov cuam tshuam rau cov khoom tshwj xeeb ntawm cov khoom kawg. Ib qho tseem ceeb ntawm tus kheej-leveling mortar yog cellulose ether, uas yog ib qho tseem ceeb additive.
Gypsum-based self-leveling mortars: ib qho kev piav qhia
Self-leveling mortar yog cov khoom siv tshwj xeeb hauv tsev tsim rau cov ntawv siv hauv pem teb uas yuav tsum tau ua kom du, theem nto. Cov mortars feem ntau muaj cov binders, aggregates thiab ntau yam additives kom ua tiav cov yam ntxwv ua tau zoo. Gypsum yog cov ntxhia ntuj uas feem ntau siv los ua tus thawj binder hauv tus kheej-leveling mortars vim nws cov khoom tshwj xeeb, suav nrog kev teeb tsa sai thiab ua haujlwm tau zoo.
Raw khoom rau gypsum-based self-leveling mortar:
1. Gypsum:
Tau qhov twg los: Gypsum yog ib qho ntxhia uas tuaj yeem khawb tau los ntawm ntuj tso nyiaj.
Muaj nuj nqi: Gypsum ua raws li lub ntsiab binder rau tus kheej-leveling mortar. Nws pab nyob rau hauv ceev ceev solidification thiab lub zog loj hlob.
2. Kev sib sau ua ke:
Tau qhov twg los: Aggregate yog muab los ntawm ntuj sediments los yog crushed pob zeb.
Lub luag hauj lwm: Aggregates, xws li xuab zeb los yog gravel zoo, muab ntau rau hauv mortar thiab cuam tshuam nws cov khoom siv, nrog rau lub zog thiab kav ntev.
3. Cellulose ether:
Qhov chaw: Cellulose ethers yog muab los ntawm tej yam ntuj tso cellulose xws li ntoo pulp los yog paj rwb.
Kev Ua Haujlwm: Cellulose ether ua raws li kev hloov kho rheology thiab cov dej khaws cia los txhim kho kev ua haujlwm, adhesion thiab tag nrho kev ua tau zoo ntawm tus kheej-leveling mortar.
4. High-efficiency dej txo tus neeg sawv cev:
Source: Superplasticizers yog hluavtaws polymers.
Kev Ua Haujlwm: Cov dej ua kom muaj txiaj ntsig zoo txo cov neeg ua haujlwm txhim kho cov dej ntws thiab ua haujlwm ntawm cov tshuaj khib nyiab los ntawm kev txo cov dej ntsiab lus, ua kom yooj yim rau qhov chaw thiab theem.
5. Retarder:
Tau qhov twg los: Retarders feem ntau yog raws li cov organic tebchaw.
Muaj nuj nqi: Retarder tuaj yeem ua rau qeeb lub sijhawm teeb tsa ntawm mortar, ncua sijhawm ua haujlwm thiab txhawb cov txheej txheem qib.
6. Ntim:
Tau qhov twg los: Fillers tuaj yeem yog ntuj (xws li limestone) lossis hluavtaws.
Muaj nuj nqi: Fillers pab txhawb lub ntim ntawm cov tshuaj khib, txhim kho nws cov ntim thiab cuam tshuam cov khoom xws li ntom thiab thermal conductivity.
7. Fiber ntau:
Source: Fibers tuaj yeem yog ntuj (xws li cellulose fibers) lossis hluavtaws (xws li polypropylene fibers).
Kev Ua Haujlwm: Cov fibers ua kom lub zog tensile thiab flexural ntawm cov tshuaj khib thiab txo qhov kev pheej hmoo ntawm kev tawg.
8. Dej:
Source: Dej yuav tsum huv si thiab haum rau haus.
Kev Ua Haujlwm: Dej yog qhov tseem ceeb rau cov txheej txheem hydration ntawm plaster thiab lwm yam khoom xyaw, pab txhawb kev txhim kho ntawm mortar zog.
Txheej txheem ntau lawm:
Raw khoom npaj:
Gypsum yog mined thiab ua tiav kom tau txais cov hmoov zoo.
Cov aggregate yog sau thiab crushed mus rau qhov yuav tsum tau loj.
Cellulose ethers yog tsim los ntawm cellulose los ntawm kev ua tshuaj.
sib tov:
Gypsum, aggregate, cellulose ethers, superplasticizer, retarder, fillers, fibers thiab dej tau raug ntsuas meej thiab sib xyaw kom ua tiav ib homogeneous sib tov.
QC:
Cov khoom sib xyaw ua tiav kev soj ntsuam nruj nruj kom ntseeg tau tias nws ua tau raws li qhov sib xws, lub zog thiab lwm yam qauv kev ua haujlwm.
Pob:
Cov khoom kawg yog ntim rau hauv hnab lossis lwm lub thawv rau kev faib khoom thiab siv rau ntawm qhov chaw tsim kho.
nyob rau hauv xaus:
Kev tsim cov gypsum-based self-leveling mortars yuav tsum tau ua tib zoo xaiv thiab ua ke ntawm cov khoom siv raw kom ua tiav cov khoom tsim nyog. Cellulose ethers ua lub luag haujlwm tseem ceeb ua cov khoom ntxiv uas txhim kho kev ua haujlwm, adhesion thiab tag nrho kev ua haujlwm ntawm cov tshuaj khib. Raws li kev tsim kho kev lag luam txuas ntxiv mus ntxiv, kev tshawb fawb thiab kev txhim kho hauv cov ntaub ntawv tshawb fawb yuav ua rau muaj kev txhim kho ntxiv hauv cov mortars tus kheej, suav nrog kev siv cov khoom siv tshiab thiab cov ntaub ntawv raw khoom.
Post lub sij hawm: Dec-11-2023