Ke lintlha life tse tla ama viscosity ea hydroxypropyl methylcellulose?

Bakeng sa tšebeliso ea seretse se metsi, hydroxypropyl methylcellulose e na le thepa e ntle ea ho teteka, e ka eketsa bokhoni ba ho kopanya pakeng tsa seretse se metsi le lera la motheo, 'me e ka boela ea ntlafatsa ts'ebetso ea anti-sag ea seretse, kahoo e sebelisoa haholo ho lilaela Seretse, ka ntle. tsamaiso ea ho kenya lebota le seretse sa ho kopanya litene.

Bakeng sa phello e teteaneng ea cellulose ether, e ka boela ea eketsa homogeneity le bokhoni ba ho thibela ho hasana ha thepa e sa tsoa tsoakoa ea samente, hape e ka thibela mathata a delamination, karohano le ho tsoa mali ka seretse le konkreite. E ka sebelisoa ho konkreite e matlafalitsoeng ka Fiber, konkreite e ka tlas'a metsi le konkreite e iketsetsang.

Hydroxypropyl methylcellulose e ka eketsa ts'ebetso ea viscous ea thepa e thehiloeng ho samente. Ts'ebetso ena haholo-holo e tsoa ho viscosity ea tharollo ea cellulose ether. Ka kakaretso, index ea linomoro tsa viscosity e sebelisoa ho ahlola viscosity ea tharollo ea cellulose ether, athe cellulose The viscosity ea ether hangata e bua ka bongata bo itseng ba tharollo ea cellulose ether, hangata 2%, ka mocheso o itseng, joalo ka likhato tse 20 le. sekhahla sa ho potoloha, ho sebelisa sesebelisoa se lekanyang se boletsoeng, joalo ka viscometer e potolohang. Boleng ba viscosity.

Viscosity ke e 'ngoe ea likarolo tsa bohlokoa tsa ho lekola ts'ebetso ea cellulose ether. Ho phahamisa viscosity ea tharollo ea hydroxypropyl methylcellulose, ho hlahisa viscosity ea thepa e entsoeng ka samente e betere, 'me ho ntlafatsa ts'ebetso ea ho khomarela karoloana. Ka nako e ts'oanang, e na le Matla a khahlanong le ho senya le matla a ho thibela ho qhalana a matla, empa haeba viscosity ea eona e phahame haholo, e tla ama ts'ebetso ea phallo le ts'ebetso ea lisebelisoa tse thehiloeng samente.

Ke lintlha life tse tla ama viscosity ea hydroxypropyl methylcellulose? Haholo-holo ho itšetlehile ka mabaka a latelang.

1. Ha tekanyo ea polymerization ea cellulose ether ea hydroxypropyl methylcellulose e phahame, e kholoanyane boima ba molek'hule, e leng se etsang hore ho be le viscosity e phahameng ea tharollo ea eona ea metsi.

2. Haeba palo kapa mahloriso a cellulose ether e phahame, viscosity ea tharollo ea eona ea metsi e tla ba e phahameng. Leha ho le joalo, ho lokela ho hlokomeloa ho khetha tekanyo e loketseng ea cellulose ether ha u e sebelisa, haholo-holo ho qoba bongata bo feteletseng ba cellulose ether. E tla ama ts'ebetso ea seretse le konkreite.

3. Joalo ka lino tse ngata, viscosity ea tharollo ea cellulose ether e tla fokotseha ka ho eketseha ha mocheso, 'me ha mocheso oa cellulose ether o phahame, mocheso o theola tlase. Tšusumetso e kholo.

4. Tharollo ea cellulose ether hangata ke pseudoplastic, e nang le litšobotsi tsa ho kuta moriri. Ha sekhahla sa ho kuta nakong ea tlhahlobo, se na le viscosity e nyane.

Momahano wa seretse o tla fokotswa ka lebaka la ketso ya matla a kantle, e leng hape e leng molemo bakeng sa kaho ya seretse, e bakang momahano o motle le ho sebetsa ha seretse ka nako e le nngwe. Leha ho le joalo, haeba tharollo ea cellulose ether e na le mahloriso a phahameng Ha viscosity e le tlaase 'me viscosity e nyenyane, e tla bontša litšobotsi tsa Newtonian fluid. Ha mahloriso a ntse a eketseha, tharollo e tla bontša butle-butle litšobotsi tsa pseudoplastic fluid, 'me haeba mahloriso a le holimo, pseudoplasticity e tla bonahala haholoanyane.