Focus on Cellulose ethers

Karolo ea hydroxyethyl cellulose (HEC) ke efe ka liaparo tsa majoe a tlhaho?

Hydroxyethylcellulose (HEC) ke polima e qhibilihang ka metsing e sebelisoang haholo liindastering tse fapaneng ho kenyelletsa kaho, lijo, meriana le lihlahisoa tsa tlhokomelo ea motho. Ke ntho ea tlhaho, e ka bola e tsoang ho cellulose, carbohydrate e fumanehang maboteng a lisele tsa semela. Ka ho roala majoe a tlhaho, HEC e phetha karolo ea bohlokoa ho ntlafatsa ts'ebetso le mekhoa e metle ea ho roala.

Liaparo tsa majoe tsa tlhaho li sebelisetsoa ho sireletsa le ho ntlafatsa ponahalo ea majoe a tlhaho a majoe a kang marble, granite le limestone. Mekhabiso ena e fana ka tšireletso khahlanong le boemo ba leholimo, kutu, ho silafatsa le ho hopa. Li ka boela tsa ntlafatsa 'mala, khanya le sebōpeho sa lejoe, kahoo li ntlafatsa botle ba lona ba tlhaho.

Leha ho le joalo, liaparo tsa majoe tsa tlhaho li tobana le mathata a 'maloa ka kopo, ho khomarela le ho sebetsa. Ho roala ho tlameha ho khomarela ka thata holim'a lejoe ntle le ho senya lejoe kapa ho sekisetsa tlhaho ea eona ea tlhaho. Hape li tlameha ho hanana le mahlaseli a UV le likhatello tse ling tsa tikoloho tse ka bakang ho senyeha kapa ho fifala ha nako. Ho phaella moo, pente e lokela ho ba bonolo ho e sebelisa, e ome ka potlako, 'me e se ke ea tloaeleha ho senya kapa ho senya.

Ho rarolla mathata ana, liaparo tsa majoe tsa tlhaho hangata li kenyelletsa li-additives le li-fillers tse fapaneng ho ntlafatsa thepa ea tsona. HEC ke e 'ngoe ea tlatsetso e joalo e atisang ho sebelisoa liphahlo tsena ka lebaka la thepa ea eona e ikhethang.

Karolo e ka sehloohong ea HEC ka liaparo tsa majoe a tlhaho ke ho sebetsa e le motenya, binder le rheology modifier. Limolek'hule tsa HEC li na le likarolo tse telele tsa mela tse monyang metsi ebe li etsa ntho e kang gel. Sehlahisoa sena se kang gel se tenya liforomo tsa pente, li etsa hore li shebahale hantle le ho li sebelisa habonolo. Ho phaella moo, ntho e kang ea gel e ka fana ka ho qhalakanngoa ho tsitsitseng le ho ts'oanang ha likarolo tsa ho roala, ho thibela ho rarolla kapa ho arohana.

HEC e sebetsa e le setlamo sa ho ntlafatsa ho khomarela ha ho roala holim'a lejoe. Limolek'hule tsa HEC li ka ikopanya le libaka tsa majoe le likarolo tsa ho roala ho theha maqhama a matla le a nako e telele. Tlamahano ena e hanela ho kuta, spalling kapa delamination tlas'a khatello ea kelello, ho etsa bonnete ba ho khomarela nako e telele le tšireletso ea holim'a lejoe.

HEC e boetse e sebetsa e le rheology modifier, e laola ho phalla le viscosity ea ho roala. Ka ho fetola palo le mofuta oa HEC, viscosity le thixotropy ea ho roala e ka lokisoa ho lumellana le mokhoa oa kopo le ts'ebetso e lakatsehang. Thixotropy ke thepa ea pente e phallang habonolo ha e le tlas'a khatello ea ho kuta, joalo ka nakong ea ho kopanya kapa ea kopo, empa e teteana ka potlako ha khatello ea ho kuta e tlosoa. Thepa ena e ntlafatsa ho ata le ho koaheloa ha koae ha e ntse e fokotsa ho rotha kapa ho thella.

Ntle le karolo ea eona ea ts'ebetso, HEC e ka ntlafatsa litšobotsi tse ntle tsa ho roala majoe a tlhaho. HEC e ka ntlafatsa 'mala, khanya le mokhoa oa ho roala ka ho etsa filimi e boreleli le e ts'oanang holim'a lejoe. Filimi e boetse e fana ka tekanyo ea ho hanyetsa metsi le letheba, ho thibela metsi kapa lino tse ling ho senya kapa ho kenella holim'a lejoe.

HEC hape ke thepa ea tlhaho le tikoloho e bolokehileng ho sebelisoa le ho lahloa. E ka senyeha 'me ha e hlahise lihlahisoa leha e le life tse kotsi kapa tse tsoang nakong ea tlhahiso kapa tšebeliso.

Ka kakaretso, hydroxyethyl cellulose (HEC) e phetha karolo ea bohlokoa ka ho ntlafatsa ts'ebetso le botle ba liaparo tsa majoe a tlhaho. HEC e sebetsa e le motenya, binder le rheology modifier, ho ntlafatsa viscosity, ho khomarela le ho phalla ha liphahlo. HEC e ka boela ea ntlafatsa 'mala, gloss le mokhoa oa ho roala le ho fana ka tekanyo ea metsi le ho hanyetsa matheba. Ho feta moo, HEC ke thepa ea tlhaho, e ka senyehang ke lintho tse phelang, e bolokehileng le e baballang tikoloho.


Nako ea poso: Sep-12-2023
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