Focus on Cellulose ethers

Mhedzisiro ye cellulose ether pakuita kwe self-leveling

Iyo inozvimisa-leveling dhaka inogona kuvimba nehuremu hwayo kugadzira hwaro hwakati sandara, hwakatsetseka uye hwakasimba pane substrate yekuisa kana kubatanidza zvimwe zvinhu. Panguva imwecheteyo, inogona kuita hukuru-hukuru uye hunobudirira kuvaka. Naizvozvo, kunyungudika kwemvura kwakakosha zvakanyanya kwedhaka rekuzvimiririra Mukuwedzera, inofanirwa kunge iine kumwe kuchengetedza kwemvura uye kusimba kwechisungo, pasina kupatsanurwa kwemvura chiitiko, uye kuve nehunhu hwekudzivirira kupisa uye kuderera kwekushisa kukwira.

Kazhinji, dhaka rekuzvimisikidza rinoda mvura yakanaka. Cellulose ether ndiyo inonyanya kuwedzera yedhaka yakasanganiswa. Kunyangwe iyo mari yakawedzerwa yakaderera kwazvo, inogona kuvandudza zvakanyanya kuita kwedhaka. Inogona kuvandudza kuwirirana, kushanda uye kusungirirwa kwedhaka. kushanda uye kuchengetedza mvura. Inoita basa rinokosha zvikuru mumunda wedhaka rakagadzirwa rakagadzirwa.

 

1 fluidity

Cellulose ether ine pesvedzero yakakosha pakuchengetedza mvura, kuenderana uye kuita kwekuvaka kweanozvigadzirisa dhaka. Kunyanya sedhaka rekuzvimisa-leveling, fluidity chimwe chezviratidzo zvikuru zvekuongorora kuzvidzora kuita. Pasi pemamiriro ekuvimbisa kuumbwa kwakajairika kwedhaka, iyo fluidity yedhaka inogona kugadziriswa nekushandura huwandu hwe cellulose ether. Zvisinei, kana muyero wacho wakanyanya kukwirira, kunyunguduka kwedhaka kuchaderedzwa, saka chiyero che cellulose ether chinofanira kudzorwa mukati mehutano hunonzwisisika.

2 kuchengetedza mvura

Kuchengetwa kwemvura kwedhaka indekisi yakakosha yekuyera kugadzikana kwezvikamu zvemukati zvezvichangobva kusanganiswa sement mortar. Kuti uite zvizere hydration reaction yeiyo gel zvinhu, inonzwisisika huwandu hweselulosi ether inogona kuchengetedza mwando mudhaka kwenguva yakareba. Kazhinji kutaura, mwero wekuchengetedza mvura weslurry unowedzera nekuwedzera kwe cellulose ether yemukati. Kuchengetedza kwemvura kweselulosi ether kunogona kudzivirira iyo substrate kuti isatore mvura yakawandisa nekukurumidza, uye inotadzisa kubuda kwemvura, kuitira kuti ive nechokwadi chekuti slurry nharaunda inopa mvura yakakwana yesamende hydration. Mukuwedzera, iyo viscosity ye cellulose ether inewo simba guru pakuchengetedza mvura kwedhaka. Iyo yakakwirira viscosity, zviri nani kuchengetedza mvura. Kazhinji, cellulose ether ine viscosity ye400mpa.s inonyanya kushandiswa mumatope ekuzvimisa, izvo zvinogona kuvandudza kushanda kwedhaka uye kuwedzera kuwirirana kwedhaka.

 

3 nguva yekuvhara

Cellulose ether ine kumwe kudzoreredza mhedzisiro padhaka. Nekuwedzera kwemukati we cellulose ether, nguva yekugadzika yedhaka inowedzera. Kudzoreredza kuita kwe cellulose ether pachinamira chesimende kunonyanya kuenderana nehuwandu hwekutsiviwa kweboka realkyl, uye harina chekuita nehuremu hwaro hwemamorekuru. Iyo idiki dhigirii yealkyl inotsiva, iyo yakakura iyo hydroxyl yemukati, uye zvakanyanya kuoneka kudzoreredza maitiro. Uye iyo yakakwirira yemukati we cellulose ether, kunowedzera kujeka kunonoka kweiyo yakaoma firimu layer pane yekutanga hydration ye simenti, saka kudzoreredza mhedzisiro inova pachena zvakare.

 

4 Flexural simba uye kumanikidza simba

Kazhinji, simba nderimwe reakakosha ekuongorora indexes yekurapa mhedzisiro yesimende-yakavakirwa simende zvinhu pamusanganiswa. Kana zviri mukati me cellulose ether zvichiwedzera, iyo yekumanikidza simba uye flexural simba redhaka rinoderera.

 

5 bond simba

Cellulose ether ine simba guru pakushanda kwekubatanidza kwedhaka. Cellulose ether inoumba firimu repolymer rine chisimbiso pakati pe simenti hydration particles mu liquid phase system, iyo inosimudzira mvura yakawanda mupolymer firimu kunze kwemasimende zvidimbu, izvo zvinoita kuti kuzara kwe hydration ye simenti, nokudaro kuvandudza Chisungo. kusimba kwepasta mushure mekuoma. Panguva imwecheteyo, huwandu hwakakodzera hweselulosi ether hunowedzera purasitiki uye kuchinjika kwedhaka, kunoderedza kuomarara kweiyo interface yekushandura zone pakati pedhaka ne substrate, uye inoderedza kugona kutsvedza pakati penzvimbo. Kusvika kumwero wakati, iyo yekubatanidza mhedzisiro pakati pedhaka uye substrate inowedzerwa. Uye zvakare, nekuda kwekuvapo kwe cellulose ether mune simende paste, yakakosha interface transition zone uye interface layer inoumbwa pakati pemateki evhu uye hydration chigadzirwa. Iyi interface layer inoita kuti iyo interface yekushandura nzvimbo iwedzere kuchinjika uye kushoma kuomarara, saka, kuitira kuti dhaka rive nesimba rakasimba rechisungo.


Nguva yekutumira: Mar-14-2023
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