Kev faib tawm thiab cov yam ntxwv ntawm archectural qib cellulose muaj kev muaj neeg

Cov neeg hais ua haujlwm ntawm cellulose yog ib pawg tshuaj tau muab los ntawm cellulose, lub ntuj polymer pom nyob hauv cov phab ntsa cell. Cov neeg ua kom muaj kev pab muaj ntau yam kev siv hauv kev tsim kho thiab cov kws kos duab kev lag luam vim lawv cov khoom siv ntau yam xws li dej cia, ua yeeb yaj kiab thiab zaj duab xis. Nyob rau hauv cov ntawv thov architectural, lawv feem ntau siv raws li cov khoom sib ntxiv hauv cov ntaub ntawv hauv tsev xws li cov nplaum, cov khoom noj qoob loo, ntses mort, thiab txheej. Cov ntaub ntawv no pab txhim kho kev ua haujlwm, kav ntev, thiab kev ua tau zoo.

1. Cellulose Cov Neeg Muaj Kev Pab Cuam Tshuam

Cellulose Cov neeg muaj kev pab yog tsim los ntawm kev kho cellulose molecules los ntawm kev hloov cov pab pawg hydroxyles (-or), uas r yog ib pab pawg alkyl lossis lwm pawg alkyl. Tus txheej txheem etherification feem ntau cuam tshuam nrog kev siv tshuaj reagents xws li methyl celulose (rau cov tshuaj tua pov tseg), lossis tshuaj pleev ethylene (rau hydroxypropyl cellulose).

Cov neeg hais daws cellulose yog tsim nyob rau hauv cov qib sib txawv raws lawv cov qauv molecat, solubility, thiab qib uas lub cellulose pawg tau hloov). Rau cov ntawv thov vaj tse, cellulose cellulose tshwj xeeb tau xaiv tshwj xeeb rau lawv lub peev xwm los txhim kho cov khoom siv ntawm kev tsim kho zoo li Cementum, thiab cov txheej txheem plaster.

2. Cov hom ntawm cov kws muaj kev cuam tshuam hauv architecture

Cov kws txawj kos duab-qib Cellulose muaj cov neeg muaj kev pab cuam tshuam dav dav raws li lawv cov qauv tshuaj thiab cov khoom muaj nuj nqi. Cov hom siv feem ntau suav nrog:

2.1Methyl Cellulose (MC)

Methyl Celluloseyog tsim los ntawm methylating cellulose, hloov ib feem ntawm cov pawg hydroxyl nrog methloyl pawg. Nws yog soluble heev nyob rau hauv dej txias thiab ua cov gel zoo li kev sib thooj raws li kev sib cais.

Cov yam ntxwv:

Dej Retentive Muaj Peev Xwm

Kev ua yeeb yaj kiab siab-tsim muaj peev xwm

Txhim kho cov haujlwm ua haujlwm hauv cov khoom tsim cov khoom zoo li plaster, stucco, thiab cov xis puab

Ua raws li tus neeg sawv cev tuab tuab, ua pa tawm yam tsis muaj viscosing cov khoom ntws ntawm cov khoom sib xyaw ntawm kev sib xyaw

Binder zoo thiab stabilizer nyob rau hauv cov khoom zoo li cov nplaum thiab txheej

2.2HydroxyPropylropy Cellulose (HPMC)

Cov cellulose no ether yog tsim los ntawm kev txhim kho methyl ntawm methyl cellulose nrog hydroxyproplo.HydroxyPropyyl Methyl celluloseyog ntau cov dej-soluble dua li ntshiab methyl cellulose thiab muab cov khoom siv txhim kho xws li kev txhim khu kev hloov tau, cov nplaum, thiab kev ruaj khov.

Cov yam ntxwv:

Cov dej zoo heev thiab kev sib koom tes

Pab txhim kho cov haujlwm ua haujlwm thiab cov tshuab ua haujlwm ntawm cov tshuab xis

Kev ua raws li lub stabilizer nyob rau hauv neeg nplua nuj, rendering, thiab pobzeb cov nplaum

Txhawb rau cov adhesion nce ntxiv ntawm cov txheej txheem rau cov chaw

Muaj kev tsis kam mus tawg thiab shrinkage nyob rau hauv tuab txheej txheem tuab

2.3Hydroxyethyl cellulose (HEC)

Hydroxyethyl celluloseyog tsim los ntawm kev qhia cov pab pawg hydroxyethyl mus rau hauv lub cellulose caj qaum. Lub Ethat no muaj txiaj ntsig tshwj xeeb rau kev tswj lub viscosity thiab rhineology ntawm cov khoom kos duab kos duab.

Cov yam ntxwv:

Dej siab khaws thiab viscosity tswj

Txhim kho cov haujlwm ua haujlwm hauv cov qauv sib xyaw ua ke

Siv rau hauv grout, plaster, thiab xim pleev xim rau daim ntawv thov du thiab ncua sijhawm qhib

Tiv thaiv kom qhuav cov ntaub ntawv, tso cai rau kev siv tau yooj yim

2.4Carboxymethyl cellulose (cmc)

Carboxymethyl celluloseyog tsim los ntawm kev qhia cov carboxymethyl pawg (-ch2cooh) rau hauv cov qauv cellulose. Hauv architecture, CMC yog siv rau nws cov dej ua kom zoo, thickening, thiab tshem tawm cov khoom.

Cov yam ntxwv:

Cov dej muaj peev xwm siab thiab ua kom ruaj khov

Nce rheology thiab txhim kho cov khoom ntws

Siv hauv cov cement thiab plaster tshuab los txhim kho lub sijhawm qhib thiab txo qis shrinkage

Feem ntau siv nyob rau hauv phab ntsa txheej ntsa thiab sib koom ua ke kom txhim kho kev ua haujlwm

2.5MethylHydroxyethyl cellulose (MHEC)

Methylhydroxyethyl celluloseyog daim ntawv hloov kho ntawm hydroxyethyl cellulose uas suav nrog pawg neeg ua kom zoo. Nws muaj cov khoom zoo sib xws rau HEC tab sis nrog qee qhov sib txawv ntawm kev solubility thiab rheological tus cwj pwm.

Cov yam ntxwv:

Muaj cov kev ua kom zoo tshaj plaws thiab ruaj khov

Txhim kho cov dej khaws cia thiab txhim kho qhov smoothness ntawm txheej

Siv nyob rau hauv ntau yam khoom siv xis thiab pleev xim rau cov kev ntxhib los mos thiab yooj yim yooj yim

3. Cov khoom thiab cov haujlwm hauv architecture

Cellulose hais ua haujlwm ua lub luag haujlwm tseem ceeb hauv kev kho tus cwj pwm thiab kev ua tau zoo ntawm cov ntaub ntawv tsim kho. Lawv lub luag haujlwm tseem ceeb yog raws li hauv qab no:

3.1Dej ceev

Cellulose Cov neeg muaj kev hais ua yog hydrophilic nyob rau hauv qhov xwm, lub ntsiab lus lawv tuaj yeem nqus thiab tuav dej. Qhov no yog qhov tseem ceeb hauv cov kab keent-raws li nws tiv thaiv kom qhuav thaum lub cev ua kom cov ntseeg tau thiab ua tiav nws lub zog.

3.2Kev ua haujlwm

Cellulose Cov neeg muaj kev hais ua haujlwm txhim kho kev ua haujlwm ntawm mortars, plasters, thiab cov nplaum los ntawm kev txhim kho lawv cov vasicity thiab yooj. Qhov no ua rau nws yooj yim dua rau cov neeg ua haujlwm thov thiab tswj cov ntaub ntawv. Qhov kev sib ntxiv ntawm cellulose muaj cai ua kom cov ntawv thov du, txawm tias rau cov chaw nyuaj.

3.3Paub txog tswj hwm

Cellulose neeg raug pab tswj lub viscosity ntawm cov ntaub ntawv kos duab kos duab, muab txoj cai txaus ntshai. Qhov no yog qhov tseem ceeb hauv cov ntawv thov zoo li pobzeb cov nplaum, xim av, thiab grout, uas muaj qhov sib thooj thiab yooj yim ntawm daim ntawv thov yog qhov tseem ceeb.

3.4Zaj duab xis-ua

Cellulose Cov lus hais ua yeeb yaj kiab zaj duab xis uas muab ib tug du, ruaj, thiab txawm tias saum npoo thaum thov. Qhov no yog qhov tseem ceeb ua tiav, txheej txheem, thiab xim pleev xim, qhov twg tsis muaj kev sib dhos pom zoo kom ua rau muaj kev pom zoo pom zoo thiab ntev ntev.

3.5Tsevneeg thiab Adhesion

Cellulose hais tau hais ua kom cov khoom siv tshiab ntawm cov khoom siv tsim kho, kom ntseeg tau tias cov txheej txheem, cov vuas luaj, thiab lwm yam khoom siv zoo rau qhov chaw. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau hauv cov nplais nplaum, cov sib txuas ua ke, thiab plaster ntawv thov.

3.6Kuj mus rau shrinkage thiab tawg

Cellulose lus hais pab kom txo txoj kev pheej hmoo ntawm shrinkage thiab tawg hauv cov ntaub ntawv tsim kho, tshwj xeeb tshaj yog hauv cov caent-based khoom. Los ntawm kev txhim kho cov dej cia thiab txuas ntxiv qhib lub sijhawm, cov khoom ntxiv uas cia cov khoom siv tau ua haujlwm ntev dua, txo qis kev sib tsoo thaum ziab.

4. Cov ntawv thov hauv architecture

Cov cellulose muaj kev hais ua ke rau ntau yam kev siv vaj tse kws kho vajtse thiab kev kho kho tshiab, txhim kho qhov zoo, thiab yooj yim ntawm kev siv cov khoom siv hauv tsev. Qee daim ntawv thov tseem ceeb muaj xws li:

Mortars thiab plasters: Nyob rau hauv kev coj ncaj ncees, cellulose muaj kev ua kom muaj zog ua haujlwm, kev ua haujlwm zoo, ua kom yooj yim rau kev thov thiab tswj cov khoom ntawm cov chaw.

Cov nplaum nplaum: Txoj kev ua kom zoo ntawm cellulose muaj neeg muaj kev pab ua kom cov vuas ua kom zoo rau muaj ntau yam nkaus, muab cov nyiaj txhiv muaj zog thiab ruaj khov.

Phab ntsa: Lub peev xwm ntawm cellulose cov neeg ua kom du los ua ib zaj yeeb yaj kiab du thiab txhim kho kev ua tiav ntawm cov txheej txheem ua tiav hauv cov ntawv siv sab nrauv thiab sab hauv.

Cov Khoom Sib Txawv Qhuav: Cov cellulose muaj kev hais ua ke zoo li cov qauv sib xyaw ua ke zoo li cov sib txuas ua ke, thiab kev ntseeg siab rau tus kheej cov pej xeem los tswj viscosity thiab dej ceev.

5. Sib piv cov lus ntawm cellulose neeg muaj kev pab

Cov neeg hais txog cellulose yog qhov tseem ceeb nyob rau hauv cov kws kos duab kos duab vim lawv muaj peev xwm txhim kho cov khoom siv kev tsim kho. Nrog lawv cov xwm txheej ntau, lawv muab cov haujlwm tseem ceeb hauv kev txhim kho cov dej rov qab, viscosity tswj, ua haujlwm tau, thiab ua haujlwm. Lawv lub peev xwm los txhim kho ob qho kev ua tau zoo thiab cov khoom siv ruaj khov ua rau lawv lub chaw tsim khoom tseem ceeb hauv kev tsim kho niaj hnub thiab kev tsim qauv. Los ntawm kev nkag siab txog ntau hom cellulose muaj kev hais ua tus neeg muaj kev pab kom tau raws li cov ntawv thov tau zoo, kom tau txais kev pab tau zoo thiab muaj kev ntseeg tau ntawm cov ntaub ntawv tsim tsev.