Hmoov putty yog ib yam khoom siv hauv tsev uas siv ntau, feem ntau yog siv rau kev sib npaug ntawm phab ntsa, sau cov kab nrib pleb thiab muab qhov chaw du rau kev pleev xim thiab kho kom zoo nkauj tom qab. Cellulose ether yog ib qho ntawm cov khoom ntxiv tseem ceeb hauv hmoov putty, uas tuaj yeem txhim kho kev ua haujlwm ntawm kev tsim kho thiab qhov zoo ntawm hmoov putty. Tsab xov xwm no yuav qhia meej txog kev siv tshwj xeeb ntawm cellulose ethers hauv hmoov putty thiab nws qhov tseem ceeb rau kev lag luam kev tsim kho.
1. Cov khoom yooj yim thiab cov haujlwm ntawm cellulose ethers
Cellulose ether yog ib hom polymer uas yaj tau los ntawm kev hloov kho tshuaj siv cov cellulose ntuj ua cov khoom siv raw. Nws cov qauv molecular muaj ntau pawg hydrophilic (xws li hydroxyl, methoxy, thiab lwm yam), uas ua rau cellulose ether yaj tau zoo hauv dej thiab ua kom tuab. Hauv kev siv hmoov putty, lub luag haujlwm tseem ceeb ntawm cellulose ether feem ntau yog pom hauv cov hauv qab no:
Cov nyhuv tuab
Cellulose ether tuaj yeem ua rau kom cov hmoov putty viscosity ntau ntxiv, ua rau nws muaj thixotropy zoo thiab ruaj khov, yog li ua rau kev tsim kho yooj yim dua. Tsis tas li ntawd, nws kuj tseem tuaj yeem kho cov khoom rheological ntawm cov slurry kom tiv thaiv cov hmoov putty kom tsis txhob ntws lossis swb tawm ntawm phab ntsa, kom ntseeg tau tias kev tsim kho du.
Kev khaws dej
Qhov khaws dej ntau ntawm cellulose ether yog ib qho ntawm nws cov yam ntxwv tseem ceeb thaum siv rau hauv cov hmoov putty. Thaum lub sijhawm tsim kho, tom qab cov hmoov putty raug siv rau ntawm phab ntsa, qhov ua kom dej noo yuav ua rau cov hmoov putty qhuav thiab tev tawm. Cellulose ether tuaj yeem ncua qhov poob dej, ua rau cov slurry maj mam tso dej tawm thaum lub sijhawm ziab, yog li txhim kho qhov kev nplaum ntawm cov putty, zam kev qhuav thiab tawg, thiab ua kom ntseeg tau tias qhov du ntawm phab ntsa.
Txhim kho kev ua haujlwm tau zoo
Qhov muaj cellulose ether ua rau kev ua haujlwm ntawm cov hmoov putty zoo dua. Piv txwv li, nws tuaj yeem txhim kho qhov yooj ywm ntawm putty, ua rau nws yooj yim dua rau cov neeg ua haujlwm tsim kho kom khawb cov putty kom sib npaug. Tsis tas li ntawd, cellulose ether kuj tseem tuaj yeem txo qhov tsim ntawm cov npuas dej ntawm qhov chaw putty thiab txhim kho qhov du, yog li txhim kho cov txiaj ntsig zoo nkauj.
Txuas sijhawm qhib
Hauv kev tsim kho, lub sijhawm qhib ntawm cov hmoov putty, uas yog, lub sijhawm los ntawm kev siv mus rau kev ziab thiab khov ntawm cov khoom, yog qhov tseem ceeb uas cov neeg ua haujlwm hauv kev tsim kho tau them sai sai rau. Cellulose ether tuaj yeem ntev lub sijhawm qhib ntawm putty, txo cov pob qij txha thiab tsis sib xws thaum lub sijhawm tsim kho, yog li txhim kho qhov zoo nkauj ntawm phab ntsa.
2. Daim ntawv thov ntawm cellulose ether hauv ntau qhov xwm txheej ntawm cov hmoov putty
Cov tshuaj pleev rau phab ntsa sab hauv
Thaum siv cov putty sab hauv phab ntsa, cellulose ether tsis yog tsuas yog txhim kho qhov ua haujlwm tau zoo xwb, tab sis kuj tseem tuaj yeem kho qhov fluidity thiab adhesion ntawm putty kom ntseeg tau tias qhov du thiab adhesion ntawm phab ntsa. Tsis tas li ntawd, qhov kev ua tau zoo ntawm cellulose ether tuaj yeem tiv thaiv cov putty kom tsis txhob tawg vim yog cov dej evaporation sai thaum lub sijhawm thov, thiab tsim nyog rau kev ruaj khov mus sij hawm ntev hauv cov chaw qhuav hauv tsev.
Cov tshuaj pleev rau phab ntsa sab nraud
Cov tshuaj pleev phab ntsa sab nraud yuav tsum muaj zog tiv taus huab cua thiab tawg, vim tias qhov chaw ntawm phab ntsa sab nraud yuav raug cuam tshuam los ntawm huab cua, qhov sib txawv ntawm qhov kub thiab txias thiab lwm yam. Kev siv cellulose ether hauv cov tshuaj pleev phab ntsa sab nraud tuaj yeem txhim kho nws cov dej khaws cia, tawg tsis kam thiab lo rau, ua rau nws hloov kho rau kev hloov pauv ntawm ib puag ncig sab nraud thiab ntev nws lub neej kev pabcuam. Tsis tas li ntawd, cellulose ether kuj tseem tuaj yeem pab cov tshuaj pleev txhim kho nws qhov kev tiv thaiv UV, khov-thaw tsis kam thiab lwm yam khoom, yog li cov tshuaj pleev phab ntsa sab nraud tseem tuaj yeem tswj tau cov khoom ruaj khov hauv qab cov xwm txheej sab nraum zoov.
daim ntaub thaiv dej tsis nkag
Cov tshuaj pleev thaiv dej yog qhov tsim nyog rau cov chaw muaj av noo ntau xws li chav dej thiab chav ua noj, thiab xav tau cov tshuaj pleev thaiv dej thiab tiv taus dej siab. Cellulose ether tuaj yeem txhim kho kev ua haujlwm tiv thaiv dej ntawm cov tshuaj pleev thaiv dej vim nws ua kom nws lo thiab ua haujlwm tau zoo. Tsis tas li ntawd, cov teebmeem thickening thiab khaws dej ntawm cellulose ether ua rau cov tshuaj pleev thaiv dej tswj tau qhov ruaj khov zoo hauv cov chaw muaj av noo ntau thiab zam cov teeb meem pwm ntawm phab ntsa.
High-end decorative putty
Cov khoom siv kho kom zoo nkauj zoo nkauj muaj qhov xav tau siab heev rau qhov tiaj tus thiab qhov zoo nkauj, thiab feem ntau yog siv rau hauv cov tsev nyob zoo, tsev so thiab lwm qhov chaw. Cellulose ether tuaj yeem pab ua kom cov khoom me me ntawm cov khoom siv putty zoo nkauj, txhim kho qhov du ntawm qhov chaw, txhim kho qhov yooj ywm thiab ua haujlwm tau ntawm cov khoom siv putty, txo cov npuas thiab cov seams, ua rau cov nyhuv kho kom zoo nkauj zoo dua, thiab ua tau raws li qhov xav tau kho kom zoo nkauj ntawm cov chaw zoo nkauj.
3. Kev xaiv cov cellulose ether hauv cov hmoov putty
Raws li daim ntawv thov xav tau thiab cov kev ua tau zoo sib txawv ntawm cov hmoov putty, cov cellulose ethers hauv qab no feem ntau siv hauv kev lag luam kev tsim kho:
Hydroxypropyl methylcellulose (HPMC)
HPMC yog ib qho tshuaj ntxiv rau kev tsim kho uas feem ntau siv nrog kev tuav dej zoo heev thiab ua rau tuab. Nws yog siv dav hauv cov ntaub ntawv tsim kho xws li cov putty sab hauv thiab sab nraud phab ntsa, cov nplaum pobzeb, thiab cov plastering mortars. Nws tuaj yeem txhim kho qhov kev tiv thaiv sag thiab kev ua haujlwm ntawm cov hmoov putty, thiab tshwj xeeb tshaj yog tsim rau cov kev xav tau ntawm cov putty viscosity siab.
Hydroxyethylmethylcellulose (HEMC)
HEMC muaj kev ua tau zoo heev ntawm kev khaws dej thiab kev ruaj khov, tshwj xeeb tshaj yog nyob rau hauv qhov kub qis, thiab tseem tuaj yeem tswj tau qhov solubility zoo, yog li nws tsim nyog rau kev siv rau hauv phab ntsa sab nraud putty. Tsis tas li ntawd, HEMC muaj cov txiaj ntsig zoo heev rau kev txhim kho kev sib kis thiab kev sib xws ntawm cov hmoov putty, ua rau qhov chaw du thiab du tom qab txheej.
Carboxymethyl cellulose (CMC)
CMC yog ib yam khoom uas yaj tau hauv dej. Txawm hais tias nws muaj cov yam ntxwv tsis tshua muaj dej thiab tiv thaiv kev poob qis, nws tus nqi qis. Nws feem ntau siv rau hauv cov hmoov putty uas tsis xav tau dej ntau thiab tsim nyog rau kev siv putty rau phab ntsa sab hauv.
4. Kev cia siab thiab kev hloov pauv ntawm cellulose ethers hauv kev lag luam hmoov putty
Nrog rau kev txhim kho tas mus li ntawm kev lag luam kev tsim kho, cov neeg xav tau qhov zoo, kev tiv thaiv ib puag ncig thiab kev zoo nkauj ntawm cov ntaub ntawv kho kom zoo nkauj tau maj mam nce ntxiv, thiab cov kev cia siab ntawm daim ntawv thov ntawm cellulose ethers tau dhau los ua dav dua. Hauv kev txhim kho yav tom ntej ntawm kev lag luam hmoov putty, daim ntawv thov ntawm cellulose ether yuav tsom mus rau cov hauv qab no:
Ntsuab thiab tus phooj ywg ib puag ncig
Tam sim no, cov ntaub ntawv tsim kho uas tsis ua rau ib puag ncig puas tsuaj yog ib qho teeb meem kub hauv kev lag luam kev tsim kho. Raws li cov khoom siv polymer uas tau los ntawm cov cellulose ntuj, cellulose ether ua raws li lub tswv yim ntawm kev tiv thaiv ib puag ncig ntsuab thiab tuaj yeem txo cov kuab paug kho kom zoo nkauj. Yav tom ntej, ntau cov khoom siv VOC qis (cov organic sib xyaw ua ke) thiab cov khoom siv cellulose ether ua tau zoo yuav raug tsim thiab siv.
Ua haujlwm tau zoo thiab ntse
Qhov kev txhim kho tas mus li ntawm cellulose ether ua rau cov hmoov putty tuaj yeem ua haujlwm ruaj khov hauv cov chaw nyuaj. Piv txwv li, los ntawm kev txhim kho cov qauv molecular thiab ntxiv cov khoom ntxiv, cov hmoov putty muaj kev hloov pauv zoo dua thiab kho tus kheej, ua rau cov ntaub ntawv tsim kho ntse dua thiab ua haujlwm tau zoo dua.
Kev siv tau ntau yam
Thaum txhim kho cov khoom yooj yim ntawm cov hmoov putty, cellulose ethers kuj tseem tuaj yeem ua rau cov hmoov putty muaj cov haujlwm ntxiv xws li antibacterial, anti-mildew, thiab anti-UV kom tau raws li qhov xav tau ntawm cov xwm txheej thov tshwj xeeb ntxiv.
Daim ntawv thov ntawm cellulose ether hauv cov hmoov putty tsis yog tsuas yog ua kom zoo dua qhov kev ua tau zoo ntawm kev tsim kho thiab kev ua haujlwm ntev ntawm cov hmoov putty, tab sis kuj tseem txhim kho qhov cuam tshuam ntawm kev kho kom zoo nkauj phab ntsa, ua tau raws li qhov xav tau ntawm cov qauv niaj hnub rau phab ntsa tiaj tus, du thiab ruaj khov. . Nrog rau kev txhim kho tas mus li ntawm kev lag luam kev tsim kho, daim ntawv thov ntawm cellulose ethers hauv cov hmoov putty yuav dhau los ua ntau dua thiab ntau dua, thawb cov ntaub ntawv kho kom zoo nkauj rau kev ua tau zoo thiab kev tiv thaiv ib puag ncig.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-01-2024