Cov nyhuv ntawm Cellulose Ether ntawm Adhesive Force of Mortar

Cellulose ethers yog multifunctional additives nyob rau hauv lub tsev cov ntaub ntawv, nrog rau cov mortars, thiab tau siv nyob rau hauv niaj hnub kev lag luam kev tsim kho rau ntau xyoo lawm. Nws muaj nyob rau hauv ntau hom thiab qib, thiab kev xaiv ntawm cellulose ether nyob ntawm daim ntawv thov thiab cov khoom ntawm cov khoom kawg.

Feem ntau, cellulose ether txhim kho kev ua haujlwm ntawm mortar los ntawm kev txhim kho nws cov haujlwm ua haujlwm, tuav dej thiab adhesion rau lub substrate. Hauv tsab xov xwm no, peb yuav tsom mus rau cov txiaj ntsig ntawm cellulose ethers ntawm mortar adhesion, cov cuab yeej tseem ceeb ntawm mortars.

Adhesion yog lub peev xwm ntawm ib qho khoom siv los ua rau lwm tus xws li lub substrate uas siv cov tshuaj khib nyiab. Mortar adhesion yog qhov tseem ceeb rau kev ua haujlwm ntev thiab kev ua haujlwm ntev ntawm lub tsev. Cov yam ntxwv cuam tshuam rau qhov adhesion ntawm mortar muaj xws li substrate zog, mortar zog, thiab tej yam kev mob.

Cellulose ether txhim kho qhov adhesion ntawm mortar los ntawm kev txhim kho rheological thiab mechanical zog ntawm mortar. Ua ntej, cellulose ethers txhim kho cov rheology ntawm mortars los ntawm kev ua kom lawv ua haujlwm tau zoo thiab txo kev sib cais. Kev ua haujlwm yog hais txog qhov yooj yim uas cov mortar sib xyaw, muab tso thiab ua tiav, thaum kev sib cais yog hais txog kev sib cais ntawm cov khoom sib xyaw thaum sib tov lossis tuav. Lub rheology ntawm mortar yog txhim kho, tso cai rau nws ntws thiab sau qhov khoob ntawm lub substrate thiab mortar kom zoo dua adhesion.

Qhov thib ob, cellulose ethers txhim kho cov cuab yeej cuab tam ntawm cov tshuaj khib, xws li nws lub zog tensile thiab compressive, uas yog qhov tseem ceeb rau kev ua kom zoo ntawm cov mortar rau lub substrate. Cellulose ether txhim kho cov cuab yeej cuab tam ntawm mortar los ntawm kev txhim kho nws cov dej, cov txheej txheem los ntawm cov cement hauv mortar reacts nrog dej los tsim cov qauv tawv.

Lub xub ntiag ntawm cellulose ether nyob rau hauv mortar slows tus nqi ntawm evaporation ntawm cov dej nyob rau hauv mortar, uas ua rau ib tug ntev hydration txheej txheem. Cov txheej txheem hydration ntev ua rau qhov dav dua, muaj zog dua ntawm cov tshuaj khib thiab cov substrate kom zoo dua adhesion.

Cellulose ethers siv nyob rau hauv mortars tuaj nyob rau hauv ntau qib thiab hom, xws li methylcellulose, hydroxyethylcellulose, thiab hydroxypropylcellulose. Methylcellulose yog hom ntau tshaj plaws thiab tsim nyog rau ntau yam kev siv vim nws cov dej tuav tau zoo, kev ua tau zoo, thiab txhim kho adhesion. Hydroxyethyl cellulose, ntawm qhov tod tes, yog hydrophilic thiab tuaj yeem nqus tau thiab khaws cov dej, yog li txhim kho kev ua haujlwm ntawm mortar thiab nws adhesion rau substrate. Hydroxypropyl cellulose yog tsim rau thickening thiab txhim khu lub rheological zog ntawm mortars, yog li txhim kho adhesion.

Piv txwv li, cellulose ether yog ib qho tseem ceeb additive nyob rau hauv kev tsim kho kev lag luam thiab plays lub luag hauj lwm tseem ceeb hauv kev txhim kho cov adhesion ntawm mortar. Lub xub ntiag ntawm cellulose ether nyob rau hauv mortar txhim kho nws cov rheological thiab mechanical zog, ua rau muaj kev ua haujlwm zoo, dej thiab adhesion rau lub substrate. Kev xaiv ntawm cellulose ether nyob ntawm daim ntawv thov npaj thiab cov khoom xav tau ntawm cov khoom kawg. Thaum siv cellulose ether nyob rau hauv mortar, cov chaw tsim tshuaj paus cov lus qhia yuav tsum tau ua raws li kom ua tau zoo tshaj plaws thiab xyuas kom meej lub durability thiab ntev kev ua tau zoo ntawm lub tsev qauv.