Redispersible looj hmoov (RDP) yog tus tseem ceeb hauv tsev khoom siv cov khoom siv txuas ntxiv hauv cov nplais. Nws tsis tsuas yog txhim kho cov khoom ntau ntawm cov nplais nplaum, tab sis kuj daws qee qhov kev ua tsis zoo ntawm cov khoom lag luam uas sib npaug ntawm cov ntaub ntawv uas ua phooj ywg.
1. Txhim Kho Cov Khoom Tshuas
Ib qho ntawm cov haujlwm tseem ceeb ntawm redispersible looj hmoov yog los txhim kho lub zog bonding ntawm cov nplais nplaum. Cov khoom siv tsoos-raws li cov nplaum nplaum ua rau cov khoom tawv tawv tom qab co dej, muab ib qho kev sib raug zoo. Txawm li cas los xij, qhov sib txawv ntawm cov khoom tawv tawv txwv txwv tsis pub advesion. Redispersible looj cov hmoov yog redispersed nyob rau hauv los ua cov tshuaj yas, uas sau cov khoom sib txuas thiab cov khoom xyaw ua ke thiab ua cov nplaum txuas ntxiv. Cov yeeb yaj kiab no tsuas yog ua rau thaj chaw tiv tauj, tab sis kuj tseem muab cov nplaum sib ze, tab sis kuj tseem muab cov nplaum sib ze, yog li txhim kho qhov kev sib raug zoo. Qhov kev txhim kho no yog ib qho tseem ceeb tshaj plaws hauv ceramic cov pob zeb sib xyaw ua ke qhov nyiaj tau los ntawm cov nyiaj tau zoo.
2. Txhim kho kom haum thiab tawg
Redispersible looj cov hmoov tuaj yeem muab cov nplais nplaum nplaum zoo dua thiab tawg. Hauv cov nplaum, lub xub ntiag ntawm cov nplaum nplaum muaj ib qho elasticity muaj tseeb los ntawm kev hloov pauv kub los ntawm kev hloov pauv kub, substrate kev ntxhov siab lossis kev ntxhov siab sab nraud. Qhov kev ua tau zoo no txo qhov kev pheej hmoo ntawm kev tawg lossis delamination, tshwj xeeb hauv cov vuas luaj lossis qhov chaw vuas luaj los yog qhov chaw nres tsheb loj.
3. Txhim Kho Dej Kuj
Cov dej tsis kam yog qhov tseem ceeb rau kev ua tau zoo ntev ntawm cov vuas luaj. Redispersible looj hmoov zoo rau cov dej nkag mus los ntawm kev sib sau ua ib lub zog tuab polymer. Qhov no tsis tsuas yog txhim kho cov dej tsis kam ntawm cov nplaum, tab sis kuj tseem ua kom khov ua kom khov, cia cov khoom nplaum kom ruaj khov thiab cov qauv kev ruaj ntseg hauv cov chaw muaj kev ruaj khov.
4. Txhim Kho Kev Siv thiab Qhib Sijhawm
Redispersible looj cov hmoov kuj tseem tuaj yeem txhim kho kev tsim kho kev tsim kho ntawm cov nplais nplaum. Cov nplaum tau ntxiv nrog RDP muaj cov txheej zoo dua qub thiab ua haujlwm zoo dua qub, tsim kev tsim kho kom yooj yim dua. Nyob rau tib lub sijhawm, nws kuj txuas lub sijhawm qhib ntawm cov nplaum (uas yog, lub sijhawm zoo uas cov nplaum tuaj yeem ua rau cov pob zeb tom qab daim ntawv thov). Qhov no muab cov kev tsim kho cov neeg siv nrog lub sijhawm ua haujlwm ntau dua, pab txhim kho kev ua haujlwm zoo thiab ua tau zoo.
5. Txhim Kho Huab Cua Kuj thiab Kev Ncu
Huab cua tiv thaiv thiab kav ntev yog qhov tseem ceeb uas cuam tshuam rau lub sijhawm ntev ntawm cov nplais nplaum. Cov polymer hais hauv RDP cross-txuas thaum lub sij hawm kho cov txheej txheem ntawm cov nplaum, sib sau ua tau zoo heev polymer network. Cov network no tuaj yeem tiv thaiv cov cawv ib puag ncig xws li cov huab cua ultraviolet, li kev txhim kho cov huab cua tsis zoo thiab nthuav dav nws lub neej pabcuam.
6. Txo cov dej nqus dej thiab txhim kho cov tsis taus
Redispersible looj cov hmoov kuj tseem tuaj yeem txo cov nqi nqus dej ntawm cov nplais nplaum, yog li txo cov txheej txheej sib raug zoo los ntawm hygroscopic nthuav dav. Tsis tas li ntawd, lub hydrophobic tiv thaiv ntawm RDP tuaj yeem inhibgranisms, yog li kev txhim kho cov khoom siv tsis sib haum ntawm cov nplais nplaum. Qhov no yog qhov tshwj xeeb tshaj plaws nyob rau hauv ib puag ncig noo los yog high-vaum ib puag ncig, xws li chav dej thiab chav ua noj.
7. Haum rau ntau yam ntawm substrates
Redispersible looj cov hmoov muab cov pobzeb nplaum zoo ntau-substrate adaptamility. Seb nws yog du Vitrified vuas, cov vuas luaj uas muaj cov nplais uas muaj cov dej khov, thiab lwm yam, cov nplaum, cov nplaum ntxiv. Qhov no tso cai rau ntau cov kev siv ntawm ntau hom vuas thiab substrates.
8. Kev tiv thaiv ib puag ncig
Niaj hnub nimno tsev cov ntaub ntawv nce ntxiv kev tiv thaiv ib puag ncig. Redispersible looj hmoov feem ntau yog tsim los ntawm cov ntaub ntawv zoo ib puag ncig xws li polyvinyl cawv thiab acrylate. Nws tsis muaj cov kuab tshuaj thiab cov hlau hnyav thiab ua tau raws li cov kev xav tau ntawm cov khoom siv hauv tsev ntsuab. Tsis tas li ntawd, RDP tsis tso tawm cov tebchaw qhib cov organic (voc) thaum lub sijhawm tsim kho, txo cov kev phom sij rau cov neeg ua haujlwm thiab ib puag ncig.
Daim ntawv thov ntawm redispersible looj hmoov hauv ceramic cov nplaum muaj zog, suav nrog kev tiv thaiv dej, cov huab cua tsis kam thiab kev tiv thaiv ib puag ncig. Cov kev txhim kho no tsis tsuas yog txhim kho kev tsim kho thiab ua haujlwm txuas ntxiv, tab sis kuj tseem txuas ntxiv rau lub neej cov khoom nplaum, tso cai rau lawv hloov kho ntau yam ntawm cov ntawv thov. Yog li ntawd, RDP nyob hauv txoj haujlwm indispensable hauv cov niaj hnub cov nplais nplaum nplaum, muab kev txhawb nqa zoo rau kev txhim kho qhov zoo ntawm kev tsim kho cov phiaj xwm.
Lub Sijhawm Post: Jul-04-2024