Cov neeg tsis txaus ntseeg polymer thiab lwm yam nplaum tsis zoo, cov hmoov av thiab lwm yam ntxiv, thiab lwm yam.] Yog lub cev sib xyaw ua kom qhuav-cug. Thaum cov tshuaj ntxuav hmoov qhuav ntxiv ntxiv rau dej thiab nplawm, cov tshuab hluav taws xob pov tseg, uas yog txaus kom cov redispersible looj hmoov. Cov hmoov nplej ntawm roj hmab hmoov sib txawv, uas muaj kev cuam tshuam ntawm cov hmoov roj hmab thiab lwm yam kev sib xyaw ua ke ntawm cov hmoov roj hmab, qhov sib txawv ntawm cov hmoov av ntawm cov roj hmab, ua kom muaj zog ntawm cov hmoov av ntawm cov roj hmab, ua kom muaj zog ntawm cov hmoov av ntawm cov roj hmab, ua kom muaj zog ntawm cov roj hmab ntxiv, ua kom muaj zog ntawm cov dej sib txawv, ua kom muaj zog ntawm cov dej sib txawv viscosity.
Nws yog feem ntau ntseeg tias cov tshuab uas redispersible looj, muaj ib qho kev txhaj tshuaj ntawm cov quav ntawm cov nplais thiab cov cohesion ntawm cov college.
Tom qab cov tshuaj khib tshiab uas muaj cov dej ntws tawm ntawm cov pa, cov dej maj mam txo qis, thiab cov dej sib xyaw ua ke, thiab lub resin maj mam ua fuses nrog txhua lwm yam. Thaum kawg polymerized rau hauv zaj duab xis. Cov txheej txheem ntawm polymer zaj duab xis tsim tau muab faib ua peb theem. Nyob rau hauv thawj theem, cov polymer hais tawm mus dawb rau hauv daim ntawv ntawm brownian suab nyob rau hauv thawj zaug emulsion. Raws li cov dej yaj, kev txav ntawm cov lus yog ib txwm muaj ntau thiab ntau qhov kev ntxhov siab ntawm cov dej thiab huab cua ua rau maj mam ua ke. Nyob rau theem ob, thaum cov ntsiab lus pib sib chwv, thiab cov dej muaj zog los ua kom lawv muaj zog ua ke, thiab cov dej uas tseem tshuav ua ke, thiab cov dej uas tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej uas tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej uas tseem tshuav ua ke, thiab cov duab uas tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej uas tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov duab uas tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej tseem tshuav ua ke, thiab cov dej uas tseem tshuav ua ke, thiab cov yeeb yaj kiab tseem tshuav ua ke, thiab cov yeeb yaj kiab tseem tshuav ua ke, thiab cov yeeb yaj kiab tseem tshuav ua ke. Qhov thib peb thiab theem kawg nkaus ua rau kev sib txawv (qee zaum hu ua tus kheej-adhesion) ntawm cov polymer lwg me me los ua ib zaj yeeb yaj kiab ib txwm muaj. Thaum lub sijhawm ua yeeb yaj kiab, lub tshuab txawb cais tawm ua ke ua cov yeeb yaj kiab nyias nyias theem nrog kev ntxhov siab siab. Pom tseeb, nyob rau hauv kev txiav txim rau cov dispersible polymer hmoov kom tsim tau cov yeeb yaj kiab hauv qhov ntsuas kub (Mft)
Colloids - polyvinyl cawv yuav tsum tau cais los ntawm cov polymer membrane system. Qhov no tsis yog teeb meem hauv Alkaline Collation Collation, vim tias cov qoob loo polyvinyl yuav maj mam muab cov txiv ntoo cawv cais tawm ntawm cov kab ke, tsis muaj lub hydrophilic tiv thaiv colloid. , Zaj duab xis tsim los ntawm dispersing lub redispersible looj dej, uas tsis tau ua haujlwm hauv cov xwm txheej qhuav, tab sis tseem nyob rau hauv cov kev mob ntev. Ntawm chav kawm, hauv cov tshuab tsis yog-alkaline, xws li gypsum lossis cov kab ke tsis siv rau cov hmoov txhuv nplej siab, thaum cov khoom siv tsis txaus ntseeg, uas yog ib nrab ntawm cov hmoov txhuv nplej siab, vim tias cov hmoov txhuv polymer
Nrog rau qhov kawg tsim ntawm cov yeeb yaj kiab polymer, cov txheej txheem muaj kev sib xyaw ntawm cov ntaub ntawv kho mob hydraulic, thiab cov khoom siv nyuaj polymer yog tsim nyob rau hauv qhov sib txawv thiab khoom loj. Saj zawg zog network. Lub zog tensile thiab cohesion ntawm cov duab dhos polymer resin tsim los ntawm cov hmoov yas yooj yim. Vim tias qhov hloov zuj zus ntawm cov polymer, lub peev xwm deformation yog ntau dua li cov qauv sib xyaw ua ke, yog li kev txhim kho cov kab cug cov kab cug.
Nrog kev nce ntawm cov ntsiab lus ntawm dispersible polymer hmoov, tag nrho cov kab ke tsim rau cov yas. Nyob rau hauv cov ntaub ntawv ntawm cov ntsiab lus zoo ntawm latex hmoov, cov khoom cug kev hloov pauv tau zoo dua li cov khoom siv chleatomer, thiab cov khoom siv ua kom zoo dua qub hmoov rau cov yeeb yaj kiab polymer (cov yeeb yaj kiab yas ntxiv rau nws tus kheej lub zog ntawm lub cev sib xyaw. Lub xub ntiag ntawm cov kab cug Elasticity ntawm lub cug cov tshuab lub tshuab rau kev nce ntxiv rau kev txhim kho, thaum lub zog ua haujlwm tau qeeb vim tias muaj raws li kev txhim kho thiab tsis muaj cai, thiab tsis txhob ua kom txog thaum muaj kev ntxhov siab ntau dua. Tsis tas li ntawd, cov interwoven polymer domains kuj tab cinder kev sib koom ua ke ntawm microcacks rau hauv cov kab nrib pleb. Yog li ntawd, cov neeg tsis txaus siab polymer hmoov nce qhov kev ntxhov siab tsis ua haujlwm thiab tsis ua tiav cov khoom siv.
Lub polymer zaj duab xis nyob rau hauv lub polymer-modified cug cug muaj ib qho tseem ceeb heev rau qhov ua kom tawv ntawm lub cug. Cov refispersible polymer hmoov faib rau ntawm lub luag haujlwm tseem ceeb dua tom qab tau tsim ib zaj yeeb yaj kiab, uas yog kom nce cov nplaum rau cov ntaub ntawv sib cuag. Nyob rau hauv microstructure ntawm thaj chaw sib cuam tshuam ntawm cov hmoov polymer-mapified ceramic delasing thiab ceramic cov ceramic ceramic cov pobzeb nrog cov dej pheeb suab tsis muaj zog thiab cov xis tsw qab. Thaj chaw tiv tauj ntawm ob thaj chaw uas tsis sib xws yog qhov kev pheej hmoo tshwj xeeb muaj kev pheej hmoo tshwj xeeb qhov chaw uas tsis zoo. Yog li ntawd, lub peev xwm ntawm cov yeeb yaj kiab ntawm cov duab yas kom zoo shrinkage cracks plays ib lub luag haujlwm tseem ceeb hauv pobzeb cov nplaum.
Nyob rau tib lub sijhawm, cov neeg recispersible polymer muaj cov ethylene muaj ntau dua cov nplaum rau cov organic substrates, tshwj xeeb tshaj yog cov khoom zoo sib xws, xws li polyvinyl chloride thiab polystyrene. Tus yam ntxwv zoo ntawm
Lub Sijhawm Post: Oct-31-2022