Redispersible polymer hmoov (RDP) yog ib qho tseem ceeb tsim cov khoom siv ntxiv, siv dav hauv cov hmoov nplaum, vwj yeeb yam nplaum thiab lwm daim teb. Nws yog cov hmoov ua los ntawm polsymer emulsion los ntawm cov tshuaj tsuag kom qhuav thev naus laus zis, uas tuaj yeem siv los ua ib qho emulsion nrog kev sib zog ua ke. Daim ntawv thov ntawm cov khoom siv no hauv Putty hmoov muaj qhov cuam tshuam tseem ceeb rau nws qhov zoo thiab ua tau zoo.
1. Txhim kho lub zog bonding
Kev sib raug zoo ntawm cov hmoov putty yog ib qho ntawm cov ntsuas tseem ceeb los ntsuas nws qhov zoo. Tom qab sib tov nrog dej, redispersible looj hmoov tuaj yeem tsim cov yeeb yaj kiab polymer. Zaj yeeb yaj kiab no tau nkag mus rau hauv Micropores ntawm cov khoom siv hauv paus thiab ua ib qho hluav taws xob muaj zog thauj tog rau nkoj nrog lub hauv paus. Nyob rau tib lub sijhawm, nws tseem tuaj yeem tsim zaj duab xis ntawm sab ntawm putty hmoov, txhim kho cov hmoov putty thiab substrate, zam teeb meem xws li ntog tawm thiab hollowing.
2. Txhim Kho Yooj Yim thiab tawg tsis kam
Tsoos Putty Putty W hmoov yog nquag mus tawg vim qhov ntsuas kub hloov pauv, deformation ntawm substrate lossis shrinkage. Tom qab ntxiv recispersible looj hmoov, putty hmoov tuaj yeem tsim cov yeeb yaj kiab polymer nrog rau qee yam elasticity tom qab ziab thiab zaj duab xis. Zaj duab xis no tuaj yeem hloov kho nws tus kheej nrog kev tawm tsam me me ntawm cov txheej txheem kom tsis txhob muaj kev ntxhov siab, yog li txhim kho qhov yooj yim thiab tawg ntawm hmoov putty. Qhov no yog qhov tshwj xeeb tshaj yog rau cov phab ntsa uas muaj qhov tsis zoo me ntsis, tshwj xeeb yog tsim rau ntawm lub ntsej muag lossis ntoo ntoo.
3. Txhim Kho Dej Kuj
Dej tsis kam yog ib qho ntawm cov ntsuas kev ua tau zoo ntawm kev ua tau zoo ntawm putty. Tsoos Putty Puquty yuav softy thiab tev tawm hauv ib puag ncig huab cua, cuam tshuam tag nrho kev zoo nkauj thiab kev pabcuam lub neej ntawm phab ntsa. Cov lus qhia ntawm Redispersible looj cov hmoov zoo tuaj yeem txhim kho cov dej tsis yeem ntawm cov hmoov putty. Cov yeeb yaj kiab polymer tsim los ntawm nws tau zoo hydrophobicity thiab cov dej nkag mus tsis kam, uas tuaj yeem tiv thaiv cov yaig ntawm cov dej thiab ua kom cov hmoov muaj sia nyob hauv ib puag ncig noo.
4. Txhim kho kev tsim kho kev ua haujlwm
Redispersible looj cov hmoov tuaj yeem txhim kho kev tsim kho kev tsim kho ntawm cov hmoov putty. Piv txwv li, nws tuaj yeem txhim kho lubricity thiab txoj kev ua haujlwm ntawm cov hmoov putty, ua kev tsim kho smoother. Nyob rau tib lub sijhawm, vim nws cov hmoov zoo rheological, cov hmoov zoo tuaj yeem ua rau cov hmoov uas muaj tusyees ntau dua ntawm cov phab ntsa thaum kev tsim kho, txo qhov teeb meem ntawm kev tsis sib xws. Ib qho ntxiv, qhov no ntxiv tuaj yeem txuas lub sijhawm qhib putty (uas yog, muab cov neeg ua haujlwm uas muaj kev tsim kho tau zoo dua.
5. Txhim kho cov hnav tsis kam thiab cuam tshuam tsis kam
Lub saum npoo hardness ntawm putty hmoov ncaj qha cuam tshuam lub durability thiab cuam tshuam tsis ntawm phab ntsa. Tom qab ntxiv recispersible looj hmoov, ib zaj duab xis tawv polymer polymer yog tsim rau saum npoo ntawm cov hmoov ua kom qhuav. Cov yeeb yaj kiab no tsis tsuas yog muaj lub siab tawv, tab sis kuj tseem tuaj yeem cuam tshuam rau sab nraud ntawm cov hmoov muaj hmoov, thiab txuas ntxiv rau nws lub neej.
6. Txhim Kho Alkali Kuj
Cov ntaub ntawv hauv paus xws li cement thiab qhob feem ntau muaj cov khoom siv alkaline siab. Thaum putty hmoov yog nyob rau hauv kev sib cuag nrog cov hauv paus no ntev, nws yuav muaj hnub nyoog lossis tsis zoo vim yog alkaline yaig. Redispersible looj cov hmoov muaj qee yam Alkali tsis kam, uas tuaj yeem tiv thaiv cov tshuaj txhuas putty thiab tswj nws lub sijhawm ntev ruaj khov.
7. Ib puag ncig ua phooj ywg
Cov ntaub ntawv tsim tsev tsev uas yuav tsum tau them sai sai rau kev tiv thaiv ib puag ncig thaum txhim kho lawv cov kev ua tau zoo. Redispersible cov hmoov looj nws tus kheej yog tsis muaj tshuaj lom thiab tsis muaj ntxhiab tsw, tsis muaj cov khoom siv volatile (VOC), thiab ua tau raws li cov kev xav tau ntawm cov ntaub ntawv cog qoob loo hauv tsev. Nyob rau tib lub sijhawm, vim tias nws tuaj yeem txhim kho kev ua tau zoo ntawm cov hmoov putty, txo qhov kev kho ntawm kev tsim kho tom qab kev tsim kho, thiab indirectly txo cov peev txheej kev siv.
Redispersible looj cov hmoov muaj qhov ua tau zoo txhim kho kev txhim kho muaj txiaj ntsig hauv cov hmoov ua kom muaj. Nws tsis tsuas yog txhim kho lub zog byping, hloov pauv thiab tawg tsis kam ntawm putty hmoov, tab sis kuj yuav txhim kho nws cov dej tsis kam, kev tsim kho thiab kav ntev. Yog li ntawd, hauv kev tsim kho niaj hnub, cov hmoov tsim nyog ntawm cov hmoov zoo li qub tuaj yeem txhim kho kom zoo thiab ua kom muaj kev xav tau kev xav tau zoo dua qub.
Lub Sijhawm Post: Feb-14-2025