Cellulose ether e tla liehisa hydration ea samente ka likhato tse sa tšoaneng, tse bonahatsoang ka ho lieha ho thehoa ha ettringite, CSH gel le calcium hydroxide.Hona joale, mochine oa cellulose ether o liehisa samente hydration haholo-holo e kenyelletsa maikutlo a ho sitisa ho tsamaea ha ion, ho senyeha ha alkali le ho ba le adsorption.
1. Khopolo-taba ea ho sisinyeha ha ion ho sisinyeha
Ho nahanoa hore li-cellulose ethers li eketsa viscosity ea tharollo ea pore, e sitisa lebelo la ho tsamaea ha ion, kahoo li liehisa samente hydration.Leha ho le joalo, tekong ena, ether ea cellulose e nang le viscosity e tlaase e na le matla a matla a ho lieha ho phalla ha samente, kahoo khopolo ena ha e tšoarelle.Ha e le hantle, nako ea ho tsamaea kapa ho falla ha ion e khutšoanyane haholo, eo ho hlakileng hore e ke ke ea bapisoa le nako ea ho lieha ha hydration ea samente.
2. Ho senyeha ha alkaline
Hangata li-polysaccharides li senyeha habonolo tlas'a maemo a alkaline ho etsa li-hydroxycarboxylic acid tse liehisang metsi a samente.Ka hona, lebaka leo ka lona cellulose ether e liehisang samente hydration e ka 'na ea e-ba hore e senya slurry ea samente ea alkaline ho theha hydroxycarboxylic acid, empa thuto e fumane hore Cellulose ether e tsitsitse haholo tlas'a maemo a alkaline, e fokotsehile hanyenyane feela,' me lihlahisoa tse senyehileng li batla li se na phello. ka tieho ea samente hydration.
3. Adsorption
Adsorption e kanna ea ba lebaka la 'nete le etsang hore cellulose ether e liehe ho kenngoa ha samente.Li-additives tse ngata tsa manyolo li tla khabisoa ho likaroloana tsa samente le lihlahisoa tsa hydration, ho thibela ho qhibiliha ha likaroloana tsa samente le crystallization ea lihlahisoa tsa hydration, kahoo li liehisa ho phalla le ho beha samente.Ho ile ha fumanoa hore cellulose ether e kenyeletsoa habonolo ho calcium hydroxide, C. S.Bokaholimo ba lihlahisoa tsa hydration tse kang H gel le calcium aluminate hydrate, empa ha ho bonolo ho adsorbed ka karolo ea ettringite le unhydrated.Ho feta moo, mabapi le cellulose ether e amehang, matla a adsorption a HEC a matla ho feta a MC, 'me ha a le tlaase ho hydroxyethyl ho HEC kapa hydroxypropyl ho HPMC, matla a adsorption a matla ke: ho latela lihlahisoa tsa hydration, hydrogen. Matla a adsorption a calcium oxide C. S.Matla a adsorption a H a matla.Tlhahlobo e eketsehileng e boetse e bontša hore matla a adsorption a lihlahisoa tsa hydration le cellulose ether e na le kamano e ts'oanang le ho lieha ha samente hydration: matla a adsorption, ho lieha ho totobetseng, empa adsorption ea ettringite ho cellulose ether e fokola, empa sebopeho sa eona. e ile ea lieha haholo.Liphuputso li boetse li bontšitse hore cellulose ether e na le adsorption e matla ho tricalcium silicate le lihlahisoa tsa eona tsa hydration, kahoo e lieha haholo ho phalla ha karolo ea silicate, 'me e na le adsorption e tlaase ho ettringite, empa ho thehoa ha ettringite ho thibetsoe.Ho totobetse hore e liehile, sena ke hobane ho lieha ho thehoa ha ettringite ho angoa ke tekanyo ea Ca2 + ka tharollo, e leng ho tsoela pele ha silicate hydration e liehang ea cellulose ether.
Liphethong tsa liteko, bokhoni ba ho chechisa morao ba HEC bo matla ho feta ba MC, mme bokhoni ba cellulose ether ho liehisa sebopeho sa calcium hydroxide bo matla ho feta ba C. S.Bokhoni ba H gel le ettringite bo matla, bo nang le kamano e lumellanang le matla a adsorption a cellulose ether le lihlahisoa tsa samente tsa hydration.Ho boetse ho netefatsoa hore adsorption e ka 'na ea e-ba lebaka la sebele la hore cellulose ether e liehe ho kenngoa ha samente,' me lihlahisoa tsa cellulose ether le samente hydration li na le kamano e tšoanang.Ha matla a matla a adsorption a lihlahisoa tsa samente tsa hydration, ho hlakile haholoanyane ho thehoa ha lihlahisoa tse liehang tsa hydration.Liphetho tsa liteko tse fetileng li bonts'a hore li-ether tse fapaneng tsa cellulose li na le litlamorao tse fapaneng mabapi le ho lieha ha hydration ea samente ea Portland, 'me ether e tšoanang ea cellulose e na le litlamorao tse fapaneng tsa ho lieha ho lihlahisoa tse fapaneng tsa hydration, e bonts'ang hore lihlahisoa tsa samente tsa Portland li na le litlamorao tse fapaneng ho fiber.Ho khethoa ha cellulose ether hoa khetha, 'me ho kenngoa ha cellulose ether ho lihlahisoa tsa samente tsa hydration ho boetse hoa khetha.
Nako ea poso: Feb-27-2023