Cov khoom siv qhuav-sib xyaw ua ke yog kev sib xyaw ua ke ntawm cov xis (xis nyob, nthuav dav cov hmoov av, thiab qee zaum) thiab qee zaum yuav tsum tau sib xyaw ua ke, thiab qee zaum kuj tau sib xyaw ua ke raws li Txhawm rau qee qhov kev faib ua feem, thiab tom qab ntawd lawv tau ntim rau hauv hnab, cov thoob lossis muab tso rau hauv cov hmoov av qhuav.
Raws li daim ntawv thov, muaj ntau yam kev lag luam muaj sia, xws li tshuaj khib nyiab rau hauv av, kom qhuav dej qhuav dej rau cov dej, kom qhuav txuag thiab tiv thaiv kom sov thiab lwm lub hom phiaj. Txhawm rau kom suav cov tshuaj khib nyiab, qhuav-sib xyaw ua ke ua kom sib xyaw ua ke (Masonry, plastering thiab cov tshuaj khib sib xyaw qhuav) thiab tshwj xeeb qhuav-sib nphua cug. Tshwj xeeb cug tshuaj xyaw ua ke: kev tshuaj khib nyiab hauv pem teb, cov khoom siv pov tseg hauv av, cov khoom siv tiv thaiv kab coll, pleev xim plastering coll, etc.
Yog li ntau cov kev sib xyaw qhuav-yuav tsum tau txais kev sib txawv ntawm ntau yam thiab sib txawv ntawm kev nqis tes ua kom tau tsim los ntawm ntau ntawm cov kev ntsuam xyuas. Piv nrog tsoos ua ke admixtures, qhuav-mixed cug admixtures tsuas siv tau hauv cov hmoov dej txias, lossis maj mam yaj nyob rau hauv kev ua ntawm alkali kom tau txais lawv cov txiaj ntsig.
1. Thickener, Dej Tuav Cov Neeg Sawv Cev thiab Stabilizer
Cellulose ether methyl cellulose (MC), HydroxyPropylropy Cellulose (HPMC)thiabHydroxyethyl Methyl Cellulose (HEMC)Txhua tus ua los ntawm cov ntaub ntawv ntawm cov duab polymer (xws li paj rwb, thiab lwm yam) tsis muaj ujatic ether ua los ntawm kev kho tshuaj lom neeg. Lawv tau cim los ntawm dej txias solubility, thickeneness, coheseness, zaj duab xis, tsis-ionic thiab pH ruaj khov. Cov dej txias ntawm cov khoom txias ntawm cov khoom siv tau zoo dua, thiab cov kab mob ua kom zoo nkauj yog qhov ua kom zoo nkauj ntawm lub zog ntawm lub zog ntawm lub tshuaj khib nyiab tau zoo heev.
Cellulose ether tsis tsuas muaj ntau yam ntau, tab sis kuj tseem muaj ntau yam ntawm nruab nrab molecular hnyav thiab viscosity los ntawm 5mpa. S txog 200,000 MPA. S, qhov kev cuam tshuam rau kev ua yeeb yam ntawm cug kab tshuaj ua ke thiab tom qab kev ua kom tawv me me kuj txawv. Muaj ntau ntawm cov kev ntsuam xyuas yuav tsum tau nqa tawm thaum xaiv cov kev xaiv tshwj xeeb. Xaiv cov cellulose ntau yam nrog cov viscosity uas haum thiab hnyav hnyav ntau yam, cov khoom siv tsawg, thiab tsis muaj cua tshuab. Tsuas yog nyob rau hauv txoj kev no tuaj yeem tau txais tam sim ntawd. Cov kev ua haujlwm zoo tagnrho, tab sis kuj muaj kev lag luam zoo.
2. Redispersible looj hmoov
Lub luag haujlwm tseem ceeb ntawm cov tuab yog los txhim kho cov dej khaws cia thiab muaj kev ruaj khov ntawm lub tshuaj khib. Txawm hais tias nws tuaj yeem tiv thaiv cov kab cug ntawm kev tawg (maj mam nqes dej evaporation tus nqi) rau qee yam los txhim kho cov tawv nqaij, feem ntau tsis yog txhim kho cov tawv nqaij, tawg tsis kam ntawm lub tshuaj khib. Kev coj ua ntawm kev ntxiv cov polymers los txhim kho qhov tsis muaj tseeb, kev tsis txaus siab, tawg tsis kam ntawm cug thiab qhob qhob. Feem ntau siv polymer emulsions rau kev hloov pauv ntawm cov roj hmab muaj zog, thiab cov roj hmab ib nrab ntawm cov roj hmab ib nrab, thiab roj hmab ib nrab ntawm cov roj hmab Kev hloov kho tshuab, kev sib txuam mechanism ntawm cov roj polymers thiab cement, thiab xis mas cov khoom lag luam kuj tseem tau kawm txog kev ntseeg. Xav paub ntau ntxiv nyob rau hauv-tob tob thiab tshawb nrhiav, thiab muaj ntau ntawm kev tshawb fawb kev tshawb fawb tau tshwm sim.
Polymer emulsion tuaj yeem siv rau hauv kev tsim khoom ntawm cov tshuaj khib nyiab, tab sis nws yog qhov sib xyaw ua tsis yooj yim los siv tau ntawm cov hmoov av qhuav, yog li recispersible yas hmoov tau yug los. Tam sim no, Redispersible looj hmoov siv nyob rau hauv cov hmoov nplej qhuav suav nrog: ① Vinyl acetate-ethylene copolymer (VEJ / E); ② Vinyl acetate-tert-carbonate copolymer (vac / veova); ③ Acrylate Homopolymer (acrylate); ④ Vinyl acetat Homopolymer (Vac); 4) STyrene-acrylate copolymer (sa), thiab lwm yam, Vinyl acetate-ethylene copolymer muaj qhov loj tshaj plaws kev siv piv.
Kev xyaum tau ua pov thawj tias kev ua yeeb yam ntawm Redispersible looj cov hmoov av, thiab nws muaj peev xwm txo cov dej nqus ntawm lub tshuaj khib (Vim tias nws cov tshuaj khib nyiab), ua rau lub coll cua-perme-permeleable thiab imperming tus neeg nws yog huab cua tiv taus thiab muaj kev txhim kho durability.
Piv nrog kev txhim kho lub zog thiab txoj kev sib sau ua ke ntawm cug thiab txo nws cov hmoov sib tov ntawm cug thiab txhim kho nws cohesion yog txwv. Txij li qhov sib ntxiv ntawm recispersible cov hmoov tuaj yeem tuaj yeem disperse thiab ua rau muaj ntau cov huab cua-nkag, nws cov nyhuv dej sib tov yog pom tseeb heev. Ntawm chav kawm, vim tus qauv tsis zoo ntawm cov kev ua npuas huab cua, cov txiaj ntsig txo dej tsis txhim kho lub zog. Ntawm qhov tsis sib xws, lub zog ntawm lub tshuaj khib nyiab yuav maj mam txo qis nrog kev nce ntawm redispersible cov ntsiab lus. Yog li ntawd, hauv kev txhim kho qee cov neeg nplua nuj uas yuav tsum tau txiav txim siab ntxiv rau cov hmoov av compressive thiab siv hluav taws xob tsis zoo ntawm lub zog compressive thiab hloov lub zog ntawm lub tshuaj khib.
3. Defoamer
Vim tias ntxiv ntawm cellulose, hmoov txhuv nplej siab ether thiab polymer cov cuab yeej ntawm lub tshuaj khib nyiab thiab muaj zog ntawm lub tshuaj khib nyiab ntawm ib sab, thiab txo nws cov modult loj heev; Ntawm qhov tod tes, nws kuj muaj kev cuam tshuam zoo ntawm cov tsos ntawm lub tshuaj khib, thiab nws yog qhov tsim nyog heev kom tshem tawm cov pa npuas huab cua qhia hauv lub cug. Tam sim no, txawv teb cov hmoov defoamers yog siv nyob rau hauv Suav teb los daws cov teeb meem huab cua ntawm cov cua npuas tsis yog ib txoj haujlwm yooj yim.
4. Los tiv thaiv tus neeg sawv cev
Thaum cov vuas luaj ceramic, foalamed polystyrene cams, thiab thov cov roj hmab hmoov polystyrene passerle part, qhov teeb meem loj tshaj plaws yog poob. Kev xyaum tau muaj pov thawj pom tias ntxiv cov hmoov txhuv nplej siab ether, sodium bentonite, metakaolin thiab montakonaolin thiab montakorillonite yog qhov ntsuas tau zoo los daws cov teeb meem ntawm cug tshuaj ntxuav tom qab kev tsim kho. Cov tshuaj tseem ceeb rau cov teeb meem ntawm sagging yog kom nce thawj qhov kev mob siab ntawm lub tshuaj khib, uas yog, kom nce nws lub thixotrotropy. Hauv kev siv cov kev siv, nws tsis yooj yim los xaiv cov neeg sawv cev zoo, vim tias nws yuav tsum daws cov kev sib raug zoo ntawm thixotrotropy, ua haujlwm, viscosity thiab kev thov dej.
5. Thickener
Lub plastering cug, nplais grout, collection tus neeg sawv cev, tab sis nws yuav tsum muaj cov qauv dej sib xyaw ua ke, tab sis nws yuav tsum muaj cov kab cug wydrophobic tag nrho, thiab tswj hwm cov teebmeem hauv qab no, thiab muaj kev tswj hwm kom ntev; Tsis muaj qhov tsis zoo rau lub zog ntawm kev sib raug zoo ntawm cov npoo; Muaj qee cov tshuaj tua dej feem ntau siv nyob rau hauv kev ua lag luam, yog qhov nyuaj rau kev sib xyaw hydrophobic ntxiv rau cov khoom xyaw ua ke yooj yim, tshwj xeeb tshaj yog cov khoom siv plastering rau kev tsim kho tshuab.
Kev ua si nrov-follow dej-cov tshuaj tiv thaiv dej tsis ntev los no tau tsim los ntawm cov tshuaj tsuag silane-basing dej-solomle tiv thaiv coloids thiab anti-cakaked cov neeg sawv cev. Thaum lub tshuaj cug yog tov nrog dej, lub plhaub colloid doloid ntawm cov dej tsis txaus ntseeg, thiab tso tawm cov kab xev encapsulated sai sai rau redisperse nws mus rau hauv cov dej sib xyaw. Nyob rau hauv qhov ib puag ncig zoo heev tom qab coaszent organic khoom siv los ua cov khoom sib txuas ua ke yog qhov sib txuas ntawm cov kab ke ntawm cov kab ke ntawm cov kab ke ntawm cov tiaj nyom ntawm xis. Raws li cov pab pawg hydrophobic organic ua rau lub ntsej muag nyob sab nraud, yog li nqa tag nrho hydrophobic nyhuv rau lub tshuaj khib.
6. Ubiquitin inhibitors
Erythrothenic alkali yuav cuam tshuam rau lub loog aesthetics ntawm cov cement-based zoo nkauj cug, uas yog ib qho teeb meem uas yuav tsum tau daws. Raws li cov lus tshaj tawm, ib qho chaw cob qhia los tiv thaiv kev tiv thaiv tau dhau los, uas yog cov hmoov redispersible nrog zoo stirringing kev ua tau zoo. Cov khoom no tshwj xeeb tshaj yog tsim nyog siv rau kev siv lub tsho tiv no, puttingies, caulks lossis finishing cug ua haujlwm thiab muaj kev sib xyaw zoo nrog lwm cov kev sib ntxiv.
7. Fiber
Ntxiv tus nqi tsim nyog ntawm fiber ntau hauv cug tshuaj tua hluav taws xob tuaj yeem nce lub zog tensile, txhim kho lub zog, thiab txhim kho qhov tawg tsis kam. Ntawm tam sim no, tshuaj siv tshuaj chemical fibers thiab ntoo ntoo yog feem ntau siv nyob rau hauv qhuav-mixeded cug. Kev Siv Tshuaj Siv Tshuaj Hluav Taws Xob Hluav Taws Xob, xws li polypropylene staple fiber ntau, tab sis kuj tseem muaj cov ntsiab lus sib xws, tab sis kuj tseem tuaj yeem txhim kho cov yas ua kom zoo thiab tawg ua kev sib tsoo ntawm cug. Cov khoom siv mechanies tsis cuam tshuam ntau. Lub cheeb ntawm ntoo cov plaub ntawm cov fiber ntau yog qhov me dua, thiab saib xyuas yuav tsum tau them rau qhov nce dej cug thaum ntxiv ntoo fiber ntau.
Lub sijhawm Post: Plaub-26-2024