Daim ntawv thov ntawm hydroxyethyl cellulose hauv cov cement thiab phab ntsa putty

Hydroxyethyl cellulose (HEC) yog ib qho tseem ceeb dej-soluble polymer compound dav siv hauv cov ntaub ntawv hauv tsev. Vim nws cov dej zoo heev, cov dej tuav thiab ua yeeb yaj kiab ua yeeb yam, Hec qhia pom cov teebmeem tseem ceeb hauv Maas thiab phab ntsa txhav.

1.Txoj kev sib zog ntawm hydroxyethyl cellulose

Hydroxyethyl cellulose yog cov tsis-ionic cellulose ether tau los ntawm kev rov ua cellulose nrog ethylene oxide. Nws cov yam ntxwv tseem ceeb muaj:
Dej solubility: HEC tuaj yeem yaj nyob rau hauv dej txias los tsim cov kua tawv.
Thickening: HEC muaj peev xwm ua kom muaj kev nce qib ntawm viscosity ntawm kev daws teeb meem.
Dej khaws cia: nws muaj peev xwm ncua sijhawm evaporation dej, yog li txhim kho kev ua haujlwm ntawm cov khoom siv.
Kev Ncua: HEC tuaj yeem tso tawm cov lus thiab tiv thaiv kom txhob muaj peev xwm.
Zaj duab xis-tsim cov khoom: HEC kev daws teeb meem tuaj yeem tsim lub pob tshab zaj duab xis nrog cov khoom zoo.
Cov khoom siv no ua rau cov cellulose zoo tshaj plaws hauv tsev xws li cement thiab putty.

2. Daim ntawv thov ntawm hydroxyethyl cellulose hauv cov cement

Txhim kho kev tsim kho kev tsim kho
Hauv cov ntawv tso cai, hec tuab thiab dej-khaws lub peev xwm tuaj yeem txhim kho kev tsim kho kev tsim kho. Piv txwv li, thaum lub plastering lossis pleev xim cov txheej txheem, Maas slurries ntxiv nrog HEC muaj cov haujlwm tau zoo dua thiab cov dej khaws cia. Cov khoom no tiv thaiv cov khoom los ntawm kom qhuav thaum lub sijhawm tsim kho, yog li txo qhov tsim ntawm cov nrib pleb thiab txhim kho kev ua haujlwm zoo.

Txhim Kho Cov Khaub Ncaws Kuj Kuj
Cov khoom siv dej-khaws cia ntawm HEC pab kom muaj kev cuam tshuam nrog kev cuam tshuam ntawm kev ua kom cov txiv neej ua kom tawv nqaij tawv thiab txo cov kev cuam tshuam ntawm shrinkage tawg. Nyob rau tib lub sijhawm, HEC tau nce lub viscosity ntawm Maas slurry, cia nws ua kom zoo dua qhwv thiab txhawb nqa cov khoom tawg tsis kam ntawm cov khoom noj qabent-raws.

Txhim Kho Adhesion
Txoj kev sib khi lus ntawm HEC tuaj yeem txhim kho txoj kev sib khi ntawm cov cement thiab lwm yam ntaub ntawv, xws li Cib Thiaj thiab GyBsum Board. Qhov no yog qhov tseem ceeb tshaj plaws hauv kev txhim kho qhov ruaj khov thiab ruaj khov ntawm cov qauv txheej txheem tag nrho.

3. Kev thov ntawm hydroxyethyl cellulose hauv phab ntsa putty

Thickening nyhuv
Hauv phab ntsa putty, cov nyhuv tuab ntawm HEC ua rau lub putty muaj viscosity tsim nyog, yog li yooj yim ua haujlwm kev tsim kho kev tsim kho. Cov nyhuv zoo ua rau cov putty kom tusyees thov ntawm phab ntsa yam tsis muaj sagging lossis tsub zuj zuj.

Txhim Kho Cov Khoom Siv Dej
Cov dej-khaws cov khoom ntawm putty yog qhov tseem ceeb rau nws cov kev tsim kho zoo. HEC tuaj yeem ncua cov dej evaporation thiab kom ntseeg tau tias cov zaub mov tau muaj noo noo, yog li txhim kho lub zog thiab kav ntev ntawm lub putty. Tshwj xeeb tshaj yog nyob rau hauv qhuav ib puag ncig, dej retiving cov nyhuv ntawm Hec tuaj yeem txhim kho kev ua tau zoo ntawm putty thiab tiv thaiv nws los ntawm kom qhuav tawm.

Txhim kho cov kev tsim muaj
Daim ntawv thov ntawm HEC hauv putty tuaj yeem txhim kho txoj kev ua kom zoo nkauj thiab tiaj tus ntawm cov khoom, ua kom cov zaub mov siv kom huv si. Nyob rau tib lub sijhawm, vim tias HEC muaj peev xwm ncua cov chaw ua haujlwm hauv lub putty thiab tiv thaiv lawv los ntawm kev tswj hwm, cov putty tswj tau kev ua tau zoo thaum lub sijhawm khaws cia.

Txhim kho qhov chaw nyob zoo
Hec Ua si ib txoj kev sib raug zoo thiab ua yeeb yaj kiab-ua lub luag haujlwm hauv lub putty, uas tso cai rau lub putty, uas tso cai rau cov putty los ua ib qho du thiab ntom nto tom qab kho. Qhov saum npoo no tsis yog yooj yim rau cov xuab zeb, tab sis kuj muab cov txiaj ntsig zoo nkauj zoo nkauj, muab ib lub hauv paus zoo tshaj plaws rau kev pleev xim ntxiv.

4. Ntxiv cov nyiaj thiab siv kev siv ntawm hydroxyethyl cellulose

Hauv kev siv cov ntawv thov, tus nqi ntxiv ntawm hydroxyethyl cellulose feem ntau tswj tau ntawm 0.1% thiab 0.5%. Qhov nyiaj tshwj xeeb yuav tsum tau hloov kho raws li cov khoom ntawm cov khoom siv thiab cov ntaub ntawv yuav tsum tau ua. HEC feem ntau yog ntxiv rau cov cement lossis putty mixatures hauv cov hmoov los yog granular daim ntawv. Txhawm rau kom nws txawm tias discersion, HEC feem ntau tov nrog me me ntawm dej los ua ib qho kev daws teeb meem ua ntej sib xyaw nrog lwm cov ntaub ntawv.

5. Thaum siv HEC, koj yuav tsum tau them sai sai rau cov ntsiab lus hauv qab no:

Txheej Txheem Ntxhov no: kev sib cais ntawm HEC raug cuam tshuam los ntawm dej kub thiab nplawm ceev. Thaum siv dej txias, tsim nyog txuas lub sijhawm los ua kom ua kom tiav ntawm HEC.
Kev sib xyaw ua ntu zus: Yuav kom tsis txhob muaj HEC ua pob tsuas, HEC yuav tsum yaj hauv dej ua ntej ntxiv lwm cov ntaub ntawv.
Kev Cia Yuav Tsum: HEC yuav tsum muab cia rau hauv ib puag ncig qhuav thiab txias, deb ntawm kev noo noo lossis dej sov.

6. Cov ntawv thov piv txwv

Phab Ntsa Tshuav
Hauv phab ntsa putty, ntxiv hec tuaj yeem txhim kho kev tsim kho kev tsim kho thiab nto zoo ntawm lub putty. Piv txwv li, hauv qee qhov project, ntxiv 0.2% HEC txuas ntxiv lub sijhawm ua haujlwm ntawm li 30 feeb, thiab pub lub hauv paus zoo rau kev kho kom zoo nkauj.

Kev Ua Yus Tus Kheej Txoj Cai Maas
Hauv daim ntawv thov ntawm kev ntsuas tus kheej xis mas, HEC tuaj yeem txhim kho cov kab viscosity thiab kev tso cai rau kev tswj kom zoo nkauj thiab kev sib tw zoo thaum lub sijhawm tswj hwm tus kheej. Piv txwv li, hauv ib qho phiaj xwm theem hauv av, ntxiv 0.3% hec tseem txhim kho cov fluidity thiab kev kho tus kheej kho kom haum rau txoj kev ntseeg qab. Tom qab kev tsim kho, av yog smoother thiab tsis muaj qhov tseeb ntsws tawg.

Raws li ntau-ua haujlwm ntxiv, hydroxyethyl cellulose tau qhia cov txiaj ntsig zoo heev hauv Cement thiab phab ntsa txhav. Nws cov thickening, dej khaws cia, thiab txhim kho cov nplaum nplaum tsis yog txhim kho cov khoom siv thiab cov khoom siv zoo, tab sis kuj txhim kho cov khoom siv tawm tsam thiab kav ntev. Nrog kev txhim kho kev ua lag luam hauv tsev, HEC yuav ua lub luag haujlwm tseem ceeb hauv kev siv cov ntaub ntawv yav tom ntej hauv kev ua haujlwm yav tom ntej.