Hais txog tus nqi ntawm redispersible yas hmoov hauv tshuaj khib, feem ntau cov neeg muas zaub muaj kev txhawj xeeb txog cov hauv qab no. Cov lus qhia luv luv: cov hmoov looj recispersible looj tau yooj yim txhim kho cov nplaum ntawm cug thiab puag, tab sis nws tseem yuav txo cov dej tsis kam ntawm tshuaj cug. kev sib deev. Cov tshuaj pleev dej yuav ua tau zoo dua ntawm lub peev xwm ntawm cov tshuaj khib nyiab kom tiv taus micro-siab yuav txo cov cohesiveness ntawm lub cug. Yog li ntawd, thaum sau cov khoom lag luam tshiab, peb yuav tsum txiav txim siab cov khoom siv ntawm txhua qhov ntsuas ntawm cov tshuaj khib, tsim nyog thiab thev naus laus zis kos duab los ntawm kev sim. Redispersible looj hmoov tuaj yeem txhim kho cov nyiaj txhuav zog ntawm cug. Vim yog tus nqi siab ntawm redispersible looj hmoov, cov qau ntau dua, qhov ntau dua tus nqi cug cug, yog li nws yuav tsum tau txiav txim siab los ntawm tus nqi. Lub zog ua tau zoo tuaj yeem inhibit shrinkage rau qee yam, thiab kev ntxhov siab tsim los ntawm deformers yooj yim rau kev tawg thiab tawm. Yog li ntawd, Bond ua zog yog qhov tseem ceeb heev los txhim kho kev tawg tsis kam.
Cov kev tshawb fawb qhia tau hais tias lub synergistic nyhuv ntawm cellulose cuam tshuam ether thiab roj hmab ua tau zoo los txhim kho txoj hlua khi ntawm xis tiag. Nrog rau qhov nce ntawm tus nqi ntawm cov neeg tsis sib xyaw polymer hmoov, cov nyiaj sib zog maj mam nce. Thaum tus nqi ntawm cov hmoov yas, cov nyiaj sib khi ua kom muaj zog nce ntxiv nrog qhov nce ntawm cov hmoov ntawm cov hmoov yas. Piv txwv li, thaum tus nqi ntawm cov hmoov yas yog 2%, lub zog sib zog nce mus txog 0182mpa, uas tau ntsib tus txheej txheem hauv tebchaws ntawm 0160Mpa. Nqa cov hmoov putty li ib qho piv txwv: ntxiv cov hmoov yas ntawm cov hmoov av thiab cov hmoov av ntawm cov hmoov xis nyob ua ke rau hauv cov hws thiab cov hlab ntsha. Ib zaj duab xis tsim nyob rau hauv capillary thiab yog khov kho ntawm qhov chaw ntawm substrate, yog li ua kom muaj kev sib tw zoo ntawm cov khoom qab zib cov khoom siv thiab cov substrate. Thaum cov zaub mov raug tshem tawm ntawm qhov kev ntsuas phaj, nws kuj tau pom tias qhov nce ntawm cov hmoov av ntawm cov nplaum ntawm lub putty rau subtty rau subtty rau subtty rau subtty rau subtty mus rau subtty mus rau subtty mus rau subtty mus rau subtty mus rau subtty mus rau subtty mus rau subtty mus rau subtty rau subtty rau subtty rau subtty rau subtty rau subtty rau subtty rau subtty rau subtty rau subtty rau subtty Tab sis thaum tus nqi ntawm cov hmoov looj xwb zoo tshaj li 4%, qhov nce zuj zus ntawm kev ua kom muaj zog qeeb. Tsis tsuas yog dispersible looj hmoov, tab sis kuj inorganic cov ntaub ntawv xws li MAICE Cacium carbonate treatment tsis qhia ib qho kev cai lij choj tawm nrog kev nce ntawm cov hmoov ntawm cov hmoov yas.
Dej tsis kam thiab Alkali tsis kam ntawm Putty yog qhov ntsuas tseem ceeb xeem seb puas tuaj yeem siv tau los ua cov dej sab hauv lossis phab ntsa sab nrauv. Thaum tus nqi ntawm cov hmoov yas yog qis dua 4%, nrog kev nce ntawm cov hmoov yas looj dej kom zoo, cov dej ua tau pom tseeb. Thaum cov tshuaj muaj ntau dua 4%, cov dej nqus dej txo qis qeeb. Qhov laj thawj yog tias xis mas yog siv los ua cov tshuaj khi hauv lub putty. Thaum cov liab liab hmoov polymer hmoov tsis ntxiv, muaj ntau voids hauv lub system. Nws tuaj yeem tsim cov yeeb yaj kiab los thaiv cov khoob hauv cov ntaub ntawv tso tawm, kom cov putiltration ntawm dej, uas tuaj yeem tiv thaiv cov dej ua ke, thiab txhim kho nws cov dej tsis kam. Thaum tus nqi ntawm cov hmoov yas ntawm 4%, cov polscer emulsion tom qab siv cov zaub mov kom tiav thiab ua tiav thiab cov hmoov av uas txo qis ntawm cov hmoov ntawm cov hmoov yas. Qhov nce zuj zus.
Kev txiav txim siab cov hmoov ntawm cov hmoov nplej ntawm cov hmoov uas muaj zog, nrog rau kev txiav txim siab ntawm cov txiaj ntsig zoo ntawm cov hmoov yas, thiab cov muaj zog muaj zog ntawm lub zog thiab cov dej tsis zoo. Cov emulsion polymer tom qab recispersion ntawm cov hmoov yas looj hauv tag nrho cov vasty, kom nws thiaj li tsis muaj vofty, yog li nws tuaj yeem txo qis cov zaub mov. dej nqus.
Lub Sijhawm Post: Feb-20-2025