Kev tsim cov hmoov putty zoo yuav tsum nkag siab nws cov khoom thiab ua kom ntseeg tau tias nws ua tau raws li qee qhov kev ua tau zoo thiab cov qauv siv. Putty, tseem hu ua phab ntsa putty los yog phab ntsa muab tub lim, yog ib qho zoo dawb cement hmoov siv los sau qhov tsis xws luag hauv cov phab ntsa plastered, pob zeb nto thiab masonry ua ntej pleev xim lossis wallpapering. Nws lub luag haujlwm tseem ceeb yog kom du nto, sau cov kab nrib pleb thiab muab lub hauv paus txawm rau kev pleev xim lossis ua tiav.
1. Cov khoom xyaw ntawm putty hmoov:
Binder: Lub binder hauv putty hmoov feem ntau muaj cov cement dawb, gypsum los yog sib tov ntawm ob. Cov ntaub ntawv no muab adhesion thiab cohesion rau cov hmoov, cia nws ua raws li qhov chaw thiab tsim kom muaj kev sib raug zoo.
Fillers: Fillers xws li calcium carbonate lossis talc feem ntau ntxiv los txhim kho qhov kev ntxhib los mos thiab ntim ntawm putty. Cov fillers no pab txhawb kom smoothness thiab workability ntawm cov khoom.
Modifiers/Additives: Ntau yam additives tuaj yeem muab ntxiv los txhim kho cov khoom tshwj xeeb ntawm putty hmoov. Piv txwv suav nrog cellulose ethers los txhim kho cov dej tuav thiab kev ua haujlwm, cov khoom siv polymers txhawm rau ua kom yooj yim thiab ua kom zoo, thiab cov khoom khaws cia los tiv thaiv kev loj hlob ntawm microbial.
2. Yuav tsum muaj cov khoom ntawm putty hmoov:
Fineness: Putty hmoov yuav tsum muaj qhov loj me me kom ntseeg tau tias daim ntawv thov du thiab zoo ib yam. Lub fineness kuj pab nrog zoo adhesion thiab sau cov tsis xws luag.
Adhesion: Putty yuav tsum ua raws li cov txheej txheem sib txawv xws li pob zeb, plaster thiab masonry. Muaj zog adhesion ua kom cov putty sticks khov kho rau saum npoo thiab yuav tsis flake lossis tev thaum lub sijhawm.
Kev ua haujlwm tau zoo: Kev ua haujlwm zoo yog qhov tseem ceeb rau kev siv yooj yim thiab kev tsim ntawm putty. Nws yuav tsum du thiab yooj yim rau kev thov yam tsis muaj kev siv zog ntau dhau, sau cov kab nrib pleb thiab qhov zoo.
Shrinkage Resistance: Putty hmoov yuav tsum muaj qhov tsawg me me thaum nws qhuav los tiv thaiv kev tsim cov kab nrib pleb lossis qhov khoob hauv cov txheej. Tsawg shrinkage ua kom lub sijhawm ntev.
Dej Resistance: Txawm hais tias cov hmoov putty feem ntau yog siv rau sab hauv tsev, nws yuav tsum tseem muaj qee theem ntawm cov dej tsis kam tiv taus qee zaus cov dej noo thiab av noo yam tsis muaj deterioration.
Lub sij hawm ziab: Lub sij hawm ziab ntawm cov hmoov putty yuav tsum tsim nyog kom cov tha xim los yog ua hauj lwm tiav tuaj yeem ua tiav raws sijhawm. Cov qauv ziab kom qhuav sai yog qhov xav tau rau kev ua haujlwm nrawm dua.
Sandability: Thaum qhuav, lub putty yuav tsum yooj yim rau xuab zeb los muab ib tug du, tiaj nto rau painting los yog wallpapering. Sandability pab txhawb rau tag nrho cov tiav zoo thiab zoo li.
Crack Resistance: Cov hmoov putty zoo yuav tsum tiv taus kev tawg, txawm tias nyob rau hauv ib puag ncig qhov kub hloov pauv lossis kev txav ntawm cov qauv yuav tshwm sim.
Kev sib raug zoo nrog cov xim: Putty hmoov yuav tsum tau sib xws nrog ntau hom xim thiab txheej txheej, ua kom muaj kev sib raug zoo thiab kev ua haujlwm ntev ntawm cov txheej txheem topcoat.
Tsawg VOC: Volatile organic compound (VOC) emissions los ntawm putty hmoov yuav tsum raug txo kom tsawg los txo qhov cuam tshuam ib puag ncig thiab tswj huab cua hauv tsev.
3. Cov qauv zoo thiab kev xeem:
Txhawm rau kom ntseeg tau tias cov hmoov putty ua tau raws li qhov yuav tsum tau ua thiab cov qauv kev ua haujlwm, cov tuam ntxhab feem ntau ua raws li kev lag luam cov cai thiab ua cov kev sim nruj. Cov kev tswj xyuas kev ua tau zoo muaj xws li:
Particle loj tsom xam: Ntsuam xyuas qhov zoo ntawm cov hmoov siv cov tswv yim xws li laser diffraction los yog sieve tsom xam.
Adhesion test: Ntsuas qhov sib txuas ntawm lub zog ntawm putty rau cov substrates sib txawv los ntawm kev sim rub los yog kab xev.
Shrinkage Assessment: Ntsuas qhov seem hloov ntawm putty thaum ziab kom txiav txim siab shrinkage yam ntxwv.
Water Resistance Test: Cov qauv yog raug rau hauv dej immersion los yog humidity chamber test los ntsuas cov dej tsis kam.
Kev ntsuas lub sij hawm ziab: Saib xyuas cov txheej txheem ziab hauv qab tswj xyuas kom txiav txim siab lub sij hawm xav tau rau kev kho kom tiav.
Crack Resistance Test: Putty-coated panels raug simulated ib puag ncig kev nyuaj siab los soj ntsuam kev tawg thiab kev nthuav tawm.
Compatibility Testing: Ntsuam xyuas kev sib raug zoo nrog cov xim thiab cov txheej txheem los ntawm kev siv lawv tshaj putty thiab ntsuam xyuas adhesion thiab tiav zoo.
Kev Ntsuam Xyuas VOC: Ua kom muaj nuj nqis VOC emissions siv cov qauv txheej txheem los xyuas kom meej ua raws li cov kev cai txwv.
Los ntawm kev ua raws li cov qauv zoo no thiab ua qhov kev ntsuam xyuas zoo, cov tuam txhab tsim khoom tuaj yeem tsim cov putties uas ua tau raws li qhov xav tau ntawm kev ua tau zoo thiab muab kev ua tau zoo hauv ntau yam kev tsim kho thiab kev siv tiav.
Cov khoom ntawm putty hmoov yog xws li tias nws ua tau zoo nyob rau hauv qhov tsis xws luag thiab muab ib tug du nto rau painting los yog xov. Cov neeg tsim khoom yuav tsum ua tib zoo xav txog qhov muaj pes tsawg leeg thiab kev tsim cov hmoov putty kom ntseeg tau tias nws nthuav tawm cov khoom tsim nyog xws li adhesion, workability, shrinkage resistance thiab durability. Los ntawm kev ua raws li cov qauv zoo thiab kev sim nruj, cov hmoov putty zoo yog tsim los ua kom tau raws li cov kev xav tau ntawm cov kws tsim kho thiab cov tswv tsev.
Post lub sij hawm: Feb-22-2024