Nyob rau hauv qhov chaw ua lag luam tiag tiag, ntau hom hmoov roj hmab tuaj yeem piav qhia tias ci ntsa iab. Yog li ntawd, yog tias tus neeg siv tsis muaj nws tus kheej cov kws tshaj lij lossis cov khoom siv kuaj, nws tsuas yog tuaj yeem raug dag los ntawm ntau tus tub luam tsis muaj kev ntseeg hauv kev ua lag luam. Tam sim no, muaj qee txoj kev hu ua kev tshawb nrhiav uas ncig hauv Is Taws Nem, xws li: saib qhov turbidity ntawm cov kua yaj thiab lub xeev tsim zaj duab xis. Cov txheej txheem no tsuas yog kev paub los ntawm qhov chaw, thiab tsis tuaj yeem muab kev txhawb nqa kev tshawb fawb rau tus neeg siv qhov kev txiav txim siab zaum kawg ntawm seb cov khoom puas haum rau nws. Yog li ntawd, hauv tsab xov xwm no, peb yuav ua kom nrov npe qee lub tswv yim yooj yim ntawm cov hmoov roj hmab dawb los ntawm cov yam ntxwv ntawm cov khoom siv raw, cov yam ntxwv, thiab lub hom phiaj ntawm kev siv cov hmoov roj hmab, yog li cov npoj yaig tuaj yeem txiav txim siab rau lawv tus kheej qhov zoo thiab qhov zoo.
Ua ntej, lub tswv yim yooj yim kom nkag siab txog yuav ua li cas cov hmoov polymer dispersible tiag tiag tau tsim tawm. (Hmoov latex redispersible yog cov hmoov polymer nrog cov khoom redispersible uas tau hloov kho los ntawm cov tshuaj emulsion resin los ntawm kev ntxiv lwm yam tshuaj thiab tsuag-qhuav. Thaum dej siv ua cov khoom dispersion, nws tuaj yeem tsim cov emulsion thiab muaj cov hmoov polymer redispersible. Redispersible Cov hmoov latex feem ntau yog cov hmoov dawb, tab sis ob peb muaj lwm yam xim.) Cov hmoov latex redispersible yuav tsum muaj xws li: polymer resin, cov khoom ntxiv, cov colloid tiv thaiv, cov neeg sawv cev tiv thaiv kev sib sau ua ke. 1. Polymer resin nyob hauv lub plawv ntawm cov hmoov latex, thiab tseem yog cov khoom tseem ceeb ntawm cov hmoov latex redispersible, xws li polyvinyl acetate / vinyl resin, thiab lwm yam. Qhov zoo ntawm polyvinyl acetate emulsion tsim los ntawm ntau lub tuam txhab tsim khoom thiab cov txheej txheem sib txawv yuav cuam tshuam ncaj qha rau qhov zoo ntawm cov hmoov roj hmab tsim tawm. Txhawm rau kom ntseeg tau tias qhov ruaj khov ntawm cov khoom zoo, cov chaw tsim khoom loj ib txwm siv cov hom polyvinyl acetate los tsim cov hmoov polymer redispersible. Ntawm no peb tuaj yeem coj ib qho piv txwv ua tau. Xyoo 2015, ib lub npe nrov hauv tsev ntawm cov hmoov roj hmab hauv tsev tau hloov cov polyvinyl acetate emulsion pheej yig los tsim cov hmoov polymer uas rov ua dua tshiab vim yog cov laj thawj tswj hwm. Yog li ntawd, qhov kev hloov pauv zoo loj heev tau tshwm sim. ua rau muaj kev puas tsuaj tsis tuaj yeem kho tau. Txawm tias qee tus tub luam tsis muaj kev ntseeg siab ntawm no yuav siv cov roj hmab dawb thiab cov zoo li ntawd es tsis txhob siv plua plav.
2. Cov khoom ntxiv (sab hauv) ua haujlwm ua ke nrog cov resin los hloov cov resin, piv txwv li, cov yas uas txo qhov kub ntawm cov resin (feem ntau cov vinyl acetate / ethylene copolymer resins tsis tas yuav ntxiv cov yas), tsis yog txhua cov hmoov latex muaj cov khoom ntxiv. Cov hmoov latex redispersible ntawm ntau lub tuam txhab me me tsuas yog muaj cov ntsuas kub ntawm cov zaj duab xis thiab tsis tuaj yeem hu ua qhov kub hloov iav, uas kuj yog qhov tseem ceeb ntawm qhov zoo ntawm cov hmoov roj hmab nws tus kheej.
3. Cov tshuaj colloid tiv thaiv Ib txheej ntawm cov khoom siv hydrophilic qhwv rau ntawm qhov chaw ntawm cov hmoov latex uas tawg tau, thiab lub cev tiv thaiv ntawm feem ntau cov hmoov latex uas tawg tau yog polyvinyl cawv. Cov cawv polyvinyl ntawm no yog koom nrog hauv cov txheej txheem ziab ua ke, es tsis yog tsuas yog sib tov. Nov yog lwm qhov teeb meem tshwm sim hauv kev ua lag luam. Ntau lub chaw ua haujlwm me me uas hais tias tsim cov hmoov roj hmab tsuas yog ua cov txheej txheem sib tov lub cev. cov txheej txheem, cov khoom no tsis tuaj yeem hu ua hmoov polymer tawg tau.
4. Cov Khoom Ntxiv (sab nraud) Cov ntaub ntawv ntxiv los txhim kho kev ua tau zoo ntawm cov hmoov roj hmab uas tawg tau dua, xws li ntxiv cov tshuaj superplasticizers rau qee cov hmoov roj hmab uas muaj kua dej. Ib yam li cov khoom ntxiv sab hauv, tsis yog txhua hom hmoov polymer uas tawg tau dua raug siv. Cov hmoov roj hmab txhua tus muaj cov khoom ntxiv no.
5. Tus neeg sawv cev tiv thaiv kev sib sau ua ke Cov khoom siv ua kom cov hmoov latex tsis sib sau ua ke thaum khaws cia thiab thauj mus los thiab pab txhawb kev ntws ntawm cov hmoov latex (pov tseg los ntawm cov hnab ntawv lossis cov thawv thauj khoom). Cov khoom siv no kuj yog qhov uas yuav cuam tshuam loj heev rau tus nqi tsim khoom tiag tiag thiab kev ua haujlwm ntawm cov hmoov polymer dispersible. Ntau cov hmoov roj hmab pheej yig hauv khw ua rau cov khoom siv ntau ntxiv kom txo cov nqi. Hais yooj yim, nws yog qhov qhia txog cov tshauv uas feem ntau xa mus rau. Cov khoom siv sib txawv ntxiv los ntawm cov chaw tsim khoom sib txawv kuj tseem yuav cuam tshuam rau qhov sib xyaw ntawm cov hmoov roj hmab thiab cement. Vim tias kev sib txuas ntawm cov nplaum inorganic rau cov ntaub ntawv yog ua tiav los ntawm lub hauv paus ntsiab lus ntawm kev sib xyaw tshuab.
Lub sijhawm tshaj tawm: Plaub Hlis-26-2024