Abstract:Cov nyhuv ntawm cov ntsiab lus sib txawv ntawm hydroxypropylenchelulose ether rau ntawm cov khoom ntawm dog dig tov plastering colleming tau kawm. Cov txiaj ntsig tau pom tias: Nrog kev nce ntawm cov ntsiab lus ntawm cellulose ether, kev sib xws thiab ceev faj poob qis, thiab lub sijhawm teeb lub sijhawm poob. Qhov txuas ntxiv, 7D thiab 28D COMPRESSIVE lub zog txo qis, tab sis tag nrho kev ua tau zoo ntawm cov kab cug qhuav tau txhim kho.
0.Preface
Xyoo 2007, rau 6 lub luag haujlwm thiab cov haujlwm ntawm lub tebchaws uas yuav muab cov tshuaj khib nyiab hauv ib lub nroog sib xyaw rau qee lub nroog tsis pub dhau ". Tam sim no, 127 lub nroog thoob plaws lub teb chaws tau nqa tawm txoj haujlwm "cug tshuaj khib, uas tau coj kev txhim kho qhuav rau kev txhim kho qhuav-cug. sijhawm. Nrog kev sib xyaw ua ke ntawm cov collected tov kev sib xyaw ua ke thiab cov khoom siv sib xyaw ua ke tau nkag mus rau qhov kev lag luam tshiab ntawm lawv cov khoom lag luam, tsis sib xws Kev lag luam sib xyaw. Noj qab nyob zoo thiab muaj kev txhim kho kom zoo. Tam sim no, zoo li cov pob zeb ua kom zoo nkauj, qhuav-sib nphed cug emixtures yog siv tau ua ke hauv kev sib xyaw ua ke, thiab kuj yog siv ob peb leeg. Tshwj xeeb, muaj ntau hom inmixtures hauv qee qhov ua haujlwm tsis sib xyaw, tab sis tsis tas yuav tsum tau them cov tshuaj ntsuab qhuav, tab sis ntau tus kheej yuav tsum tau them rau nws cov kev coj ua thiab kev ua haujlwm, mus Zam kev siv ntau ntawm cug monixtures, ua rau muaj cov khib nyiab tsis tsim nyog, thiab tseem cuam tshuam rau qhov zoo ntawm qhov project. Hauv kev sib xyaw ua ke qhuav, cellulose tso lub luag haujlwm ntawm kev khaws cia, thickening, kev txhim kho ntawm kev tsim kho kev ua haujlwm. Cov dej zoo khaws cov kev ua tau zoo kom meej tias cov c tov sib xyaw ua ke yuav tsis ua rau sanding, hmoov thiab lub zog txo thiab ua tiav kev ua tiav dej khov kho; Cov nyhuv thickening heev ua tau zoo dua rau lub zog ntawm lub zog ntawm lub cug cug ntub. Daim ntawv no coj mus kawm cov txheej txheem ntawm kev siv ntawm cellulose ethers ua rau muaj admixtining zoo tib yam huv.
1. Cov ntaub ntawv nyoos thiab cov hau kev siv hauv kev sim
1.1 Cov ntaub ntawv raw rau kev sim
Cov cement yog P. 042.5 Maas Greely yog chav kawm ua ke yog qhov loj me ntawm 5 hli lossis ntau dua li ntawm 5 modulus yog 2.6, thiab lub cellulose ether yog Kev lag luam muaj zog HydroxyPropy kasthylropy cellulose ether (viscosity 12000 mpa.
1.2 Txoj Kev Ntsuas
Kev Npaj Qauv thiab Kev Ntsuas Kev Ntsuas tau nqa tawm raws li JCJ / T 70-2009 Kev Ntsuas Kev Ntsuas Cov Qauv Txheej Txheem ntawm lub tsev cug.
2. Kuaj txoj kev npaj
2.1 cov mis rau qhov kev xeem
Hauv qhov kev ntsuas no, tus nqi ntawm txhua cov khoom siv ntawm 1 tuj ntawm cov khoom siv yooj yim plastering colluing yog siv los ua cov dej, thiab dej tau haus dej ntawm 1 tuj cov tshuaj khib nyiab.
2.2 Cov Tswv Yim Tshwj Xeeb
Siv cov mis no, tus nqi ntawm hydroxypropyl metylcellulose ete rau txhua tuj tov qhuav tov plastering cug / 0.3 kg / t, 0.4 kg / tt, 0.6 kg / T, los kawm cov xwm txheej ntawm kev sib txawv ntawm hydroxypropylulbeculeculeculeculeculeculeculeculeculeculeculeculucing qhuav plastering qhov tseeb siv tshuaj cug Admixtures tuaj yeem paub qhov zoo ntawm cov tshuaj cug yooj yim qhuav txheej txheem, kev tsim kho yooj yim, kev txuag ib puag ncig thiab txuag hluav taws xob.
3. Kuaj cov txiaj ntsig thiab tshuaj ntsuam xyuas
3.1 Ntsuas Cov Ntawv
Qhov cuam tshuam ntawm kev sib txawv ntawm hydroxypropyf methylpcellulose ethers, teeb tsa lub sijhawm, thiab compressive lub zog ntawm dog dig plastering cug.
3.2 Ntsuas cov txiaj ntsig
Nws tuaj yeem pom ntawm cov txiaj ntsig ntawm kev sib txawv ntawm hydroxypropylulphelyleculose, teeb tsa lub sijhawm, thiab compressive lub zog ntawm dog dig plastering cug. Nrog rau kev nce ntawm cellulose cov ntsiab lus, dej tswjfwm tsis tau yooj yim, rau 0.6% thaum hydroxyprropyl cellulose yog tov. Cov dej khaws cia mus txog 96.3%, uas ua pov thawj tias cov dej khaws cov nyhuv khaws cia ntawm cov tshuaj ntxuav tawm ntawm lub cev ether yog qhov zoo heev; Qhov sib xws tau txo qis hauv dej ua kom ruaj khov ntawm cov nyhuv methyl cellulose per tak ntawm cug ntawm cap ntawm kev sim); Qhov pom tseeb ceev pom tias cov nyhuv qis, qhia tias cov dej khov ua kom muaj zog ntawm cov tshuaj ntxuav hluav taws xob ntau dua thiab siv cov ntom ntom nti; Lub sijhawm teem sijhawm ntev ntev nrog kev nce ntawm cov ntsiab lus ntawm hydroxypropyl cellulose uas tsim nyog siv ntawm hydroxypropyl methylculose ether muaj Kev tswj hwm zoo rau cov nyhuv rau lub sijhawm ua haujlwm ntawm cov tshuaj khib ntub; Lub zog compressive ntawm 7D thiab 28d tau poob qis (ntau dua cov tshuaj ntau, qhov pom tseeb ntawm qhov txo). Qhov no muaj feem xyuam rau kev nce hauv lub ntim ntawm lub tshuaj khib thiab txo qis hauv qhov pom ntom ntom ntom. Qhov sib ntxiv ntawm hydroxypropy cellulose cellulose cellulose cellulose tuaj yeem tsim cov kab ke kaw hauv lub zog cug lub teeb thiab qhov ua kom tawv. Micropores txhim kho lub durability ntawm cug.
4. Precautions for the application of cellulose ether in ordinary dry-mixed mortar
1) Xaiv cov cellulose ager ether cov khoom. Feem ntau hais lus, ntau hom viscosity ntawm cellulose ntawm cov nyhuv retentive, tab sis ntau dua qhov kev ua phem rau lub zog thiab kev tsim kho ntawm lub tshuaj khib; Lub txiaj ntsig ntawm cellulose ether yog qhov tsawg hauv cov cug tov qhuav. Nws tau hais tias tus finer nws yog, qhov yooj yim nws yog kom yaj. Raws li tib koob tshuaj, tus futher fineness, qhov zoo dua cov dej ua kom ruaj khov.
2) Xaiv cov cellulose ether pest. Los ntawm cov ntawv xeem thiab tshuaj ntsuam ntawm cov ntsiab lus ntawm cov ntsiab lus ntawm cellulose cellulose ether, nws yuav tsum tau los ntawm cov nqi tsim, Cov khoom lag luam zoo, kev tsim kho thiab plaub yam ntawm kev tsim kho ib puag ncig kom nkag siab txog kev xaiv qhov tsim nyog. Qhov ntau npaum li cas ntawm hydroxypropyl cellulose cellulose tsis muaj raws li cov qauv siv hluav taws xob sib xyaw yog ntxiv rau hauv cov nyiaj me me. Kev huam yuaj; Qhov ntau npaum li cas ntawm hydroxypropyl cellulose ether nyob rau hauv qhov tshwj xeeb tawg-resistant plhuav-resistant plastering cug yog li 3 kg / t.
3) Daim ntawv thov ntawm cellulose ether nyob rau hauv dog dig-mixed-mixed-mixed-mixed-mixed-mixed-mixed-mixed-mixed-mixed-mixed-mixed-mixed-mixed Nyob rau hauv cov txheej txheem ntawm kev npaj dog dig-mixed-mixed ntawm admixture tuaj yeem ntxiv, txo cov nqi ntau lawm, txo cov peev txheej ; Yog tias siv ib leeg rau cov cellulose ether, lub zog sib zog tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua, thiab cov hmoov zoo ntawm cov kua dej siav. Vim tias tus nqi ntawm cov tshuaj khib adm admixture, ntsuas qhov yuam kev yog qhov loj thaum siv ib leeg. Qhov zoo ntawm qhuav-mixed cug khoom lag luam.
5. Cov lus xaus thiab cov lus qhia
1) Hauv kev sib xyaw ua ke qhuav tov cov kab cug, nrog kev nce ntawm hydroxypropyluleculose tus nqi tuaj yeem raug txo qis, thiab lub sijhawm teeb tsa lub sijhawm ntev. Lub zog ua kom muaj zog ntawm 28D txo qis, tab sis tag nrho kev ua tau zoo ntawm cov ntsiab lus sib xyaw ua ke thaum cov ntsiab lus ntawm hydroxypropyl cellulose ether yog me ntsis.
2) Nyob rau hauv cov txheej txheem ntawm kev npaj zoo li collected-mixulose ether nrog haum viscosity thiab zoo kawg nkaus yuav tsum tau xaiv, thiab nws cov koob tshuaj yuav tsum txiav txim siab nruj me ntsis los ntawm kev sim. Vim tias tus nqi ntawm cov tshuaj khib adm admixture, ntsuas qhov yuam kev yog qhov loj thaum siv ib leeg. Nws raug nquahu kom sib tov nws nrog cov cab kuj ua ntej, thiab tom qab ntawd nce tus nqi ntxiv kom ntseeg tau qhov zoo ntawm cov khoom siv chlu.
3) qhuav-cug cug yog qhov kev lag luam tawm hauv Suav teb. Nyob rau hauv cov txheej txheem ntawm kev siv cho kas edgtures, peb yuav tsum tsis txhob dig muag rau qhov muaj nuj nqis, tab sis them nyiaj ntau dua, thiab them ntau dua kev txuag hluav taws xob thiab kev noj haus kom tsawg.
Lub sij hawm Post: Feb-22-2023