Focus on Cellulose ethers

Botle ba cellulose ether bo ama ts'ebetso ea seretse joang?

Ka bobeli carboxymethyl cellulose le methyl cellulose li ka sebelisoa e le lisebelisoa tse bolokang metsi bakeng sa samente, empa phello ea ho boloka metsi ea carboxymethyl cellulose e tlase haholo ho feta ea methyl cellulose, 'me carboxymethyl cellulose e na le letsoai la sodium, kahoo ha e loketse plaster paris.E na le phello e fokolisang 'me e fokotsa matla a plaster ea paris.Methyl cellulose ke motsoako o loketseng bakeng sa lisebelisoa tsa samente tsa gypsum tse kopanyang ho boloka metsi, ho teteana, ho matlafatsa le ho etsa viscosifying, ntle le hore mefuta e meng e na le phello e nyenyefatsang ha tekanyetso e le kholo.e phahame ho feta carboxymethyl cellulose.Ka lebaka lena, lisebelisoa tse ngata tsa gypsum composite gelling li sebelisa mokhoa oa ho kopanya carboxymethyl cellulose le methyl cellulose, tse sa sebeliseng litšobotsi tsa tsona feela (joalo ka phello e fokolisang ea carboxymethyl cellulose, phello e matlafatsang ea methyl cellulose), le ho sebelisa melemo ea bona e tloaelehileng. (joalo ka ho boloka metsi le phello e teteaneng).Ka tsela ena, ts'ebetso ea ho boloka metsi ea lisebelisoa tsa gypsum cementitious le ts'ebetso e felletseng ea lisebelisoa tsa gypsum cementitious li ka ntlafatsoa, ​​athe keketseho ea litšenyehelo e ntse e le tlase haholo.

 

Viscosity ke karolo ea bohlokoa ea ts'ebetso ea methyl cellulose ether.

 

Ha re bua ka kakaretso, ha viscosity e phahame, ho na le phello e ntle ea ho boloka metsi ea seretse sa gypsum.Leha ho le joalo, ha viscosity e phahame, boima ba molek'hule ea methyl cellulose ether e phahame, 'me ho fokotseha ho lekanang le ho qhibiliha ha eona ho tla ba le tšusumetso e mpe ho matla le ts'ebetso ea kaho ea seretse.Ha li-viscosity li phahame, ho hlakile haholoanyane phello e teteaneng holim'a seretse, empa ha e lekane ka ho toba.Ha viscosity e phahame, seretse se metsi se tla ba le viscous haholoanyane.Nakong ea kaho, e bonahatsoa e le ho khomarela scraper le ho khomarela holimo ho substrate.Empa ha ho na thuso ho eketsa matla a sebopeho sa seretse se metsi ka boeona.Ho phaella moo, nakong ea kaho, ts'ebetso ea anti-sag ea seretse se metsi ha e totobetse.Ho fapana le hoo, li-viscosity tse ling tse mahareng le tse tlase empa tse fetotsoeng tsa methyl cellulose ethers li na le ts'ebetso e ntle haholo ho ntlafatsa matla a sebopeho sa seretse se metsi.

 

Fineness hape ke index ea bohlokoa ea ts'ebetso ea methyl cellulose ether.MC e sebelisoang bakeng sa seretse sa phofo e omileng e hlokeha hore e be phofo e nang le metsi a tlaase, 'me botle bo boetse bo hloka 20% ho 60% ea boholo ba likaroloana ho ba ka tlase ho 63m.Bonolo bo ama ho qhibiliha ha methyl cellulose ether.Coarse MC hangata ke granular, eo ho leng bonolo ho qhalakanya le ho qhala ka metsing ntle le agglomeration, empa sekhahla sa ho qhala butle haholo, kahoo ha se a loketse ho sebelisoa ka omileng phofo seretse.Lihlahisoa tse ling tsa lapeng li flocculent, ha ho bonolo ho hasana le ho qhibiliha ka metsing, 'me ho bonolo ho li kopanya .Ka seretse sa phofo se omeletseng, MC e hasane har'a lisebelisoa tsa samente tse kang aggregate, filler e ntle le samente, 'me phofo e lekaneng feela e ka qoba methyl cellulose ether agglomeration ha e kopanya le metsi.Ha MC e eketsoa ka metsi ho qhaqha li-agglomerate, ho thata haholo ho qhala le ho qhaqha.Coarse MC ha e senya feela, empa hape e fokotsa matla a sebaka sa seretse.Ha seretse se joalo se omeletseng se sebelisoa sebakeng se seholo, lebelo la ho folisa la seretse sa sebaka seo le tla fokotseha haholo, 'me mapetsong a tla hlaha ka lebaka la linako tse fapaneng tsa ho folisa.Bakeng sa seretse se fafalitsoeng se nang le mohaho oa mechine, tlhokahalo ea fineness e phahame ka lebaka la nako e khutšoanyane ea ho kopanya.

 

Botle ba MC bo boetse bo na le phello e itseng ho bolokeng metsi ha eona.Ka kakaretso, bakeng sa li-ether tsa methyl cellulose tse nang le viscosity e tšoanang empa botle bo fapaneng, tlas'a tekanyo e tšoanang ea tlatsetso, ho ntlafala ho hoholo ho ka ba molemo ho boloka metsi.


Nako ea poso: Feb-02-2023
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