Ib qho ntawm qhov sib txawv loj tshaj plaws ntawm cov tshuaj khib nyiab qhuav thiab cov tshuaj khib nyiab yog tias cov tshuaj khib nyiab qhuav tau hloov kho nrog cov tshuaj ntxiv me me. Ntxiv ib qho ntxiv rau cov hmoov qhuav mortar yog hu ua kev hloov kho thawj zaug, ntxiv ob lossis ntau qhov ntxiv yog hu ua kev hloov kho theem nrab. Qhov zoo ntawm cov hmoov qhuav mortar nyob ntawm qhov raug xaiv ntawm cov khoom thiab kev sib koom tes thiab kev sib txuam ntawm ntau yam khoom. Vim tias cov tshuaj additives kim dua, thiab muaj kev cuam tshuam ntau dua rau kev ua haujlwm ntawm cov hmoov qhuav mortar. Yog li ntawd, thaum xaiv additives, tus nqi ntawm additives yuav tsum tau muab qhov tseem ceeb tshaj plaws. Cov hauv qab no yog cov lus qhia luv luv rau kev xaiv cov tshuaj ntxiv cellulose ether.
Cellulose ether tseem hu ua rheology modifier, ib qho khoom siv los kho cov khoom rheological ntawm cov tshuaj khib nyiab tshiab, thiab siv yuav luag txhua hom tshuaj khib. Cov khoom hauv qab no yuav tsum tau txiav txim siab thaum xaiv nws ntau thiab ntau npaum li cas:
(1) Kev tuav dej ntawm qhov kub sib txawv;
(2) Thickening nyhuv, viscosity;
(3) Kev sib raug zoo ntawm qhov sib xws thiab qhov kub thiab txias, thiab kev cuam tshuam ntawm kev sib xws ntawm cov electrolyte;
(4) Daim ntawv thiab qib ntawm etherification;
(5) Kev txhim kho ntawm mortar thixotropy thiab qhov chaw muaj peev xwm (qhov no yog qhov tsim nyog rau mortar pleev xim rau ntawm qhov chaw ntsug);
(6) Dissolution ceev, tej yam kev mob thiab tiav ntawm dissolution.
Ntxiv nrog rau kev ntxiv cellulose ether (xws li methyl cellulose ether) rau cov hmoov mortar qhuav, polyvinyl acid vinyl ester kuj tuaj yeem ntxiv, uas yog, kev hloov kho theem nrab. Inorganic binders (cement, gypsum) nyob rau hauv lub mortar tuaj yeem ua kom muaj zog compressive, tab sis tsis tshua muaj zog tensile thiab flexural zog. Polyvinyl acetate tsim ib zaj duab xis elastic nyob rau hauv lub qhov hws ntawm cov cement pob zeb, ua kom cov mortar tiv taus siab deformation loads thiab txhim kho hnav tsis kam. Kev xyaum tau ua pov thawj tias ntxiv cov khoom sib txawv ntawm methyl cellulose ether thiab polyvinyl acid vinyl ester kom qhuav hmoov mortar tuaj yeem npaj nyias txheej smearing phaj bonding mortar, plastering mortar, hniav painting mortar, thiab masonry mortar rau aerated qhob blocks thiab tus kheej-leveling mortar rau nchuav cov plag tsev, thiab lwm yam. Kev sib xyaw ntawm ob tuaj yeem tsis tsuas yog txhim kho qhov zoo ntawm mortar, tab sis kuj zoo heev txhim kho kev tsim kho efficiency.
Hauv kev siv tswv yim, txhawm rau txhim kho qhov kev ua tau zoo tag nrho, nws yog ib qho tsim nyog yuav tsum siv ntau yam khoom siv ua ke. Muaj qhov pom kev sib piv ntawm cov additives. Ntev npaum li qhov ntau npaum li cas thiab qhov sib piv yog qhov tsim nyog, lawv tuaj yeem txhim kho qhov kev ua tau zoo ntawm cov mortar los ntawm ntau yam. Txawm li cas los xij, thaum siv ib leeg, qhov kev hloov pauv ntawm cov tshuaj khib nyiab yog txwv, thiab qee zaum txawm tias cov teebmeem tsis zoo, xws li ntxiv cellulose ib leeg, thaum ua kom cov cohesiveness ntawm mortar thiab txo qhov degree ntawm delamination, ua rau kom cov dej haus ntawm cov mortar thiab khaws cia rau hauv lub slurry, uas ua rau ib tug loj txo nyob rau hauv lub compressive zog; Thaum sib xyaw nrog tus neeg sawv cev huab cua, txawm hais tias qib ntawm stratification ntawm mortar tuaj yeem txo qis heev, thiab kev siv dej kuj tseem txo qis, tab sis lub zog compressive ntawm lub mortar yuav txo qis vim muaj cua npuas ntau. Txhawm rau txhim kho kev ua tau zoo ntawm cov cement mortar mus rau qhov loj tshaj plaws, thiab tib lub sijhawm kom tsis txhob muaj kev puas tsuaj rau lwm yam khoom ntawm lub mortar, qhov sib xws, txheej thiab lub zog ntawm cov cement mortar yuav tsum ua kom tau raws li qhov yuav tsum tau ua ntawm qhov project thiab cov kev cuam tshuam. specifications. Nyob rau tib lub sijhawm, tsis muaj cov kua qaub nplaum siv, txuag Rau cement, kev tiv thaiv ib puag ncig, thiab lwm yam, nws yog ib qho tsim nyog yuav tsum tau ua kom tiav kev ntsuas, tsim thiab siv cov khoom sib xyaw ua ke los ntawm kev xav ntawm cov dej txo, viscosity nce, dej tuav thiab thickening, thiab huab cua-entraining plasticization.
Post lub sij hawm: May-08-2023