Redispersible looj hmoov (RDP)yog cov khoom siv polymer siv nyob rau hauv kev tsim kho kev tsim kho, feem ntau yog siv los ua kev ntxiv rau putty, txheej, nplaum thiab lwm yam khoom. Nws lub ntsiab muaj nuj nqi yog txhawm rau txhim kho qhov hloov tau, cov khoom siv tshuaj nplaum, dej tawm tsam cov khoom ntawm cov khoom.
1. Txhim kho cov nplaum ntawm putty
Qhov sib ntxiv ntawm redispersible looj hmoov rau putty tuaj yeem zoo txhim kho cov nplaum ntawm putty thiab hauv paus dos thiab lwm yam). Tom qab cov hmoov kom yaj tau yooj yim, nws tsim cov tshuaj colloidal, uas tuaj yeem tsim kev sib zog ntawm lub cev thiab cov tshuaj muaj zog kom muaj zog thiab siv hluav taws xob. Txhim kho cov nplaum muaj peev xwm txhim kho cov nyhuv txhim kho ntawm putty, zam kev tawg, nqis thiab lwm yam teeb meem, thiab ncua kev pabcuam lub neej ntawm putty.
2. Txhim kho qhov yooj thiab tawg tsis taus ntawm putty
Qhov yooj yooj yim ntawm putty yog qhov tseem ceeb cuam tshuam rau nws txoj kev ua haujlwm ruaj khov thiab kev tsim kho. Redispersible looj tau yas ua lub luag haujlwm hauv kev nce zuj zus thiab hloov pauv hauv kev ua tiav. Due to the effect of the molecular chain of latex powder, putty can obtain a certain elasticity after drying, and can adapt to the slight deformation of the base surface, thereby reducing the cracks caused by factors such as temperature changes and humidity fluctuations. Qhov no yog qhov tseem ceeb rau kev zoo nkauj thiab kev siv hluav taws xob ntawm phab ntsa.
3. Txhim kho cov dej tsis kam thiab huab cua tiv thaiv ntawm putty
Cov hmoov yas looj tau zoo tuaj yeem txhim kho cov dej tsis kam ntawm putty los ntawm kev txhim kho lub hydrophobicity ntawm putty. Tsoos kev tso tawm yooj yim tso dej thiab swells nyob rau hauv ib puag ncig huab cua, ua rau txheej putty los tev tawm thiab pwm. Tom qab ntxiv cov hmoov liab redispersible looj hmoov, dej nqus tau muaj peev xwm ntawm putty tau txo qis, thiab nws tuaj yeem tawm tsam qee yam degree ntawm dej yaig. Tsis tas li ntawd, qhov sib ntxiv ntawm cov hmoov ntxiv kuj tseem txhim kho cov huab cua tsis kam ua kom muaj kev ua tau zoo xws li cua hlob xws li cua, nag thiab hnub.
4. Txhim kho kev tsim kho kev ua haujlwm ntawm putty
Redispersible looj cov hmoov tuaj yeem txhim kho kev tsim kho kev tsim kho ntawm putty. Qhov sib ntxiv ntawm cov hmoov nplej kom muaj yooj yim rau kev thov thiab ua haujlwm, txo qhov nyuaj thiab kev siv zog ua haujlwm ntawm kev tsim kho. Lub fluentity thiab cov kev ua haujlwm ntawm putty yuav zoo dua, thiab cov tiaj thiab cov nplaum ntawm txheej tuaj yeem txhim kho ntxiv. Cov hmoov yas looj ua rau cov khoom siv qeeb qeeb thaum lub sijhawm kho kom qhuav, zam kev ua kom qhuav lossis tsis sib cais sai dhau ntawm kev tsim kho.
5. Txhim kho cov nplooj khov rau ntawm putty
Hauv thaj chaw txias, Putty yuav poob nws thawj lub luag haujlwm vim qhov kub tsawg, thiab txawm tsim teeb meem xws li kev tawg thiab poob tawm. Qhov sib ntxiv ntawm redispersible looj cov hmoov zoo tuaj yeem txhim kho qhov ua rau muaj kev tsis taus. Cov hmoov yas looj tau tuaj yeem tswj cov qauv zoo nyob ruaj khov raws li cov kev mob kub tsawg thiab zam cov teeb meem zoo ntawm putty vim khov. Yog li ntawd, kev siv putty muaj cov hmoov av cov hmoov xws li sab qaum teb tuaj yeem txhim kho qhov ruaj khov thiab kev ntseeg tau ntawm cov khoom.
6. Txo porosity thiab txhim kho lub ntom ntom ntawm putty
Qhov sib ntxiv ntawm cov hmoov zoo tuaj yeem txo qhov porosity ntawm putty thiab txhim kho lub ntom ntawm putty. Thaum lub sij hawm zaj duab xis tsim cov txheej txheem ntawm putty, lhuab hmoov tuaj yeem sau cov quav me me hauv cov dej tsis kam, thiab cuam tshuam tsis kam ntawm putty. Lub compactness ntawm putty muaj qhov kev cuam tshuam tseem ceeb ntawm tag nrho cov kev ruaj khov ntawm phab ntsa, thiab ua tau zoo txhim kho qhov zoo ntawm phab ntsa tom qab siv ntev.
7. Txhim kho cov anti-kev ua qias tuaj ntawm putty
Lub txheej putty yog lub hauv paus txheej ntawm cov xim. Ntev mus rau hmoov av, roj, acidic thiab alkaline cov tshuaj hauv huab cua thiab lwm yam kev ua qias tuaj yuav cuam tshuam rau cov xim tha xim kawg. Redispersible looj cov hmoov pab txo kom tau cov adsorption muaj peev xwm ntawm cov putty nto, yog li txo cov nplaum ntawm cov pa paug. Qhov no tsis tsuas yog txhim kho lub durability ntawm lub putty, tab sis kuj tseem tswj hwm kev zoo nkauj ntawm cov xim phab ntsa.
8. Nce cov kev tsim kho tuab ntawm putty
Txij li cov hmoov yas lo tau zoo tuaj yeem txhim kho txoj kev ua tau zoo thiab fluty ntawm putty, putty siv cov hmoov yas siv tau feem ntau pab kho tuab. Cov yam ntxwv no yog qhov tshwj xeeb tshaj yog rau qee phab ntsa uas yuav tsum tau kho kom meej tias cov phab ntsa loj dua kom tawg kom tawg thaum siv sijhawm ntev.
Tus cawv ntawmredispersible looj hmoovOn putty yog multifaceted, mas cuam tshuam hauv kev txhim kho cov nplaum, dej tsis kam, khov ua, kev tsim kho kev ua tau zoo thiab tiv thaiv kev ua qias tuaj thiab tiv thaiv kev ua qias tuaj. Raws li kev hloov kho tau zoo tshaj plaws, cov hmoov yas tsis tuaj yeem txhim kho kom zoo dua ntawm putty thiab txhim kho nws qhov durability, tab sis kuj ua kom muaj zog dua nyob rau hauv ib puag ncig me nyuam sib txawv. Raws li kev tsim kho cov kev tsim kho cov cai rau phab ntsa kev ua tau zoo, cov hmoov zoo dua yuav dhau los thiab muaj ntau yam rau cov khoom tso cai rau cov zaub mov yuav ua tau tseem ceeb dua.
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