Basa re cellulose ether mudhaka

Cellulose etherkuchengetedza mvura

Kuchengetedzwa kwemvura (water retention of mortar) zvinoreva kugona kwedhaka kubata nekukiya mvura. Iyo yakakwirira viscosity ye cellulose ether, zviri nani kuchengetedza mvura. Nekuti cellulose chimiro chine hydroxyl uye ether bond, hydroxyl uye ether bond boka reokisijeni maatomu nemamorekuru emvura kugadzira hydrogen bond, kuitira kuti mvura yemahara ipinde mumvura inosunga, inomonereka mvura, kuitira kuti iite basa rekuchengetedza mvura.

Solubility ye cellulose ether

1. Iyo coarser cellulose ether iri nyore kupararira mumvura pasina agglomerating, asi chiyero chekunyungudika chinononoka. Cellulose ether iri pasi pe60 mesh inonyungudutswa mumvura kwemaminitsi makumi matanhatu.

2. Zvikamu zvakanaka zve cellulose ether mumvura zviri nyore kuparadzira uye kwete agglomerate, uye chiyero chekuparara chiri pakati nepakati. Cellulose ether pamusoro pe80 mesh yakanyungudutswa mumvura kwemaminitsi matatu.

3. Ultrafine cellulose ether inopararira nokukurumidza mumvura, inonyunguduka nokukurumidza uye inoita viscosity inokurumidza. Cellulose ether pamusoro pe120 mesh inonyungudutswa mumvura kwemasekonzi gumi-30.

Kunyatsonaka kwe cellulose ether particles, zviri nani kuchengetwa kwemvura, zvidimbu zvakakasharara zve cellulose ether uye mvura yekusangana kwemvura inonyungudika nekukasika gel phenomenon. Nama inoputira zvinhu kudzivirira mamorekuru emvura kuti asarambe achipinda. Dzimwe nguva, kunyangwe ikamutswa kwenguva yakareba, mhinduro haigone kuparadzirwa uye kunyungudika zvakaenzana, ichigadzira madhaka flocculent mhinduro kana agglomerate. Zvimedu zvakanaka zvinopararira uye zvinonyungudika pakarepo kana zvasangana nemvura kuita yunifomu viscosity.

PH kukosha kwe cellulose ether (kunonoka coagulation kana simba rekutanga)

Iko PH kukosha kwevagadziri ve cellulose ether kumba nekune dzimwe nyika inodzorwa zvakanyanya pa7, iyo ine acidic. Nekuti kuchine yakawanda dehydrated glucose mhete chimiro mune molecular chimiro che cellulose ether, dehydrated glucose mhete ndiro boka guru rinokonzera simende kunonoka. Dehydrated glucose ring inogona kugadzira calcium ions mu simenti hydration solution fomu shuga calcium molecular compounds, kuderedza calcium ion concentration mu simenti hydration induction period, kudzivirira kuumbwa uye kunaya kwe calcium hydroxide uye calcium salt crystals, nokudaro kunonotsa nzira ye simenti hydration. Kana PH kukosha ikava alkaline state, dhaka richaonekwa rekutanga simba mamiriro. Iye zvino mafekitari mazhinji ekugadzirisa PH kukosha achishandisa sodium carbonate, sodium carbonate imhando yeaccelerating agent, sodium carbonate inogona kuvandudza kushanda kwesement particle surface, zvichiita kuti kuwirirana pakati pezvikamu kuwedzere, kuwedzera kuwedzera viscosity ye slurry, dhaka uye sodium carbonate uye calcium ion compound nokukurumidza, zvichiita kuti kuumbwa kwe ettringite , kukurumidza kuumbwa. Naizvozvo, kukosha kwePH kunofanirwa kugadziridzwa zvinoenderana nevatengi vakasiyana mune chaiyo yekugadzira maitiro.

Cellulose ether gasi induction

Kupinda kwemhepo kwe cellulose ether kunonyanya kukonzerwa nekuti cellulose ether zvakare i surfactant, iyo interface basa re cellulose ether rinonyanya kuitika mugasi-liquid-solid interface, yekutanga ndiko kuiswa kwemabhuru, kuteverwa nekupararira uye kunyorova. Cellulose ether ine alkyl boka, inoderedza zvakanyanya tension yepasi uye interfacial simba remvura, mhinduro yemvura mukuita kubvongodza iri nyore kugadzira mabhuru madiki akawanda akavharwa.

Gelation ye cellulose ether

Cellulose ether yakanyungudutswa mudhaka nekuda kweiyo molecular cheni yemethoxy uye hydroxypropyl boka mune slurry ine calcium ions uye aruminiyamu ions mukugadzira viscous gel uye yakazadzwa musimende dhaka gap, inovandudza density yedhaka, ita basa rekuzadza nekusimbisa uye kusimba. Nekudaro, kana iyo composite matrix ikatsikirirwa, iyo polymer haigone kutamba yakaomesesa rutsigiro, saka iyo simba uye yekumanikidza reshiyo yedhaka inodzikira.

Kugadzirwa kwemafirimu ecellulose ether

Firimu rakatetepa relatex rinoumbwa pakati pe cellulose ether nesamende zvimedu mushure memvura. Iyo firimu ine yekuisa chisimbiso uye inovandudza pamusoro pakaoma chiitiko chedhaka. Nemhaka yokuti cellulose ether ine mvura yakanaka yekuchengetedza mvura, chengetedza mamorekuru emvura akakwana mukati medhaka, nokudaro kuve nechokwadi chesimba resimende hydration uye kuoma uye kubudirira zvachose, kuvandudza simba rekubatanidza redhaka, panguva imwechete inovandudza kunamatira kwesamende dhaka, dhaka rine plastiki yakanaka uye kuoma, kuderedza dhaka rekugadzirisa deformation.