Cellulose Ether (CE) ke sesebelisoa sa polymer se fetotsoeng se tsoang selulose ea tlhaho 'me se sebelisoa haholo ho thepa ea mohaho, liaparo, meriana, litlolo le masimo a mang. Ho na le mefuta e fapaneng ea li-cellulose ethers, tse tloaelehileng li kenyelletsa hydroxypropyl methylcellulose (HPMC), hydroxyethyl cellulose (HEC) le methylcellulose (MC). Lits'ebetsong tse fapaneng, li-cellulose ethers li bonts'itse melemo ea bohlokoa mabapi le ho tšoarella le ts'ebetso, e fetoha karolo ea bohlokoa ho ntlafatsa boleng ba thepa le bophelo ba ts'ebeletso.
1. Ntlafatsa ts'ebetso ea kaho
Sebakeng sa thepa ea mohaho, li-cellulose ethers li atisa ho sebelisoa e le li-thickeners, li-ajenti tse bolokang metsi le li-binders. Linthong tse entsoeng ka seretse, gypsum le samente, phello e matla ea cellulose ether e etsa hore thepa e be metsi le polasetiki nakong ea kaho, ho qoba mathata a ho tsoa mali le ho arohana. Cellulose ether e boetse e ntlafatsa matla a tlamahano ea thepa, ho etsa bonnete ba hore thepa e ka aroloa ka mokhoa o ts'oanang nakong ea ts'ebetso ea kaho 'me e na le ho khomarela hantle ho substrate.
Hydroxypropyl methylcellulose (HPMC) e ka ntlafatsa haholo ts'ebetso ea seretse, ea etsa hore ho be bonolo ho e sebelisa le ho fokotsa monyetla oa ho thella, haholo-holo mohahong o otlolohileng. Ho phaella moo, phello e fokolisang ea cellulose ether e ka eketsa nako ea ts'ebetso ea seretse, e leng molemo bakeng sa kaho e nepahetseng ea merero e rarahaneng. Likarolo tsena li tsoela pele ho ntlafatsa katleho ea kaho le boleng mabapi le ho fokotsa litšila le liphoso tsa kaho.
2. Ho boloka metsi ka mokhoa o babatsehang
E 'ngoe ea thepa ea bohlokoa ea cellulose ethers ke thepa ea bona e ntle ea ho boloka metsi. Ho boloka metsi ho bolela bokhoni ba cellulose ether ho monya le ho boloka mongobo ka har'a lintho tse bonahalang, ho thibela ho fetoha mouoane pele ho nako kapa ho phalla ha mongobo, kahoo ho tiisa matla le ho tšoarella ha thepa ka mor'a ho hahoa. Lisebelisoa tsa ho haha tse kang lihlahisoa tse entsoeng ka samente le tsa gypsum, phello ea ho boloka metsi ea cellulose ether e tiisa hore metsi a ka kenya letsoho ka botlalo ts'ebetsong ea karabelo nakong ea ts'ebetso ea hydration, ho qoba ho phunyeha ha thepa le matla a sa lekaneng a bakoang ke tahlehelo ea metsi pele ho nako.
Thepa ea ho boloka metsi e bohlokoa ka ho khetheha bakeng sa kaho ea lera le tšesaane. Ka mohlala, nakong ea ts'ebetso ea lithaele, li-cellulose ethers li ka thusa ho thibela mongobo ka har'a seretse ho lahleheloa ke kapele, kahoo ho ntlafatsa ho khomarela le ho tšoarella ha lithaele. Ka mokhoa o ts'oanang, tšimong ea ho roala, li-cellulose ethers li ka thibela ho fetoha mouoane pele ho nako ea mongobo, ho lumella ho roala hore ho thehoe holim'a seaparo se lekaneng le se teteaneng, ho lelefatsa bophelo ba ho roala le ho fokotsa tlhokahalo ea ho hlokomeloa hamorao.
3. Ntlafatsa ho hanyetsa boemo ba leholimo ba thepa
Tšebeliso ea cellulose ethers e ka boela ea ntlafatsa boemo ba leholimo ba thepa, ke hore, e hanyetsana le maemo a tikoloho joalo ka mongobo, mahlaseli a UV, boemo ba leholimo le mocheso o feteletseng. Sena ke sa bohlokoa bakeng sa ho tšoarella ha nako e telele ha thepa ea mohaho. Ka mohlala, tšebeliso ea li-cellulose ethers ka liphahlo li ka ntlafatsa boleng ba ho etsa filimi ea ho roala le ho eketsa sekhahla sa ho roala, kahoo ho ntlafatsa ho hanyetsa ha lesela ho mahlaseli a kotsi le ho thibela ho fela le ho tsofala.
Lisebelisoa tse thehiloeng ho samente, cellulose ether e ka ntlafatsa ho boloka metsi, ea fokotsa phello ea ho omisa nakong ea ho thatafala ha samente, 'me ea fokotsa kotsi ea ho phatloha, kahoo e ntlafatsa ho hanyetsa ha leqhoa le ho hanyetsa boemo ba leholimo. Sena se lumella mohaho ho boloka botšepehi ba oona ba sebopeho le botle ba nako e telele maemong a leholimo a thata.
4. Excellent thickening le rheology phetoho
Tšusumetso e matla ea cellulose ether ka tharollo e nang le metsi e lumella hore e fetole thepa ea rheological ea thepa (e kang viscosity, khatello ea maikutlo, joalo-joalo), kahoo e ntlafatsa botsitso le boiketlo ba tšebeliso ea thepa. Lirapeng le lipente, li-cellulose ethers li lokisa viscosity ea pente ho netefatsa hore ha e thekesele kapa e rotha nakong ea ts'ebetso mme e etsa hore e be boreleli, esita le ho roala. Sena ha se ntlafatse feela ho laola kaho ea kaho, empa hape se ntlafatsa haholo ho hanyetsa ho apara le ho hanyetsa mapheo a ho roala.
Li-cellulose ethers li boetse li phetha karolo ea bohlokoa ho lisebelisuoa tsa fatše tse ikemetseng. Ts'ebetso ea eona ea ho lokisa le rheological e tiisa hore thepa e boloka metsi a matle le thepa ea ho ikemela nakong ea ts'ebetso ea ho tšela, ho fokotsa ho hlahisa li-bubble le likoli, 'me qetellong ho ntlafatsa ho bata le ho tšoarella ha fatše.
5. Ntlafatsa ho hanyetsa mapetsong a thepa
Ho boloka metsi le liphello tse teteaneng tsa cellulose ether li thusa ho laola lebelo la ho omisa la thepa le ho qoba mathata a ho fokotseha le ho senya a bakoang ke tahlehelo e feteletseng ea mongobo. Haholo-holo linthong tse entsoeng ka seretse le samente, cellulose ether e ka qhalakanya mongobo ka mokhoa o ts'oanang le ho fokotsa ho hlaha ha mapetsong a shrinkage. Ntle le moo, thepa ea eona e ntlafalitsoeng ea maqhama e boetse e thusa thepa hore e be le maqhama a betere le substrate le ho matlafatsa khanyetso ea sekhahla sa sebopeho ka kakaretso.
Lisebelisoa tse thehiloeng ho gypsum, cellulose ethers li thibela mapetsong a holim'a metsi a bakoang ke ho lahleheloa ke metsi ka potlako, ho etsa hore marako le siling li lule li tsitsitse ebile li boreleli nakong ea ho omisa. Khanyetso ena ea ho phatloha ha e ntlafatse feela ponahalo ea boleng ba thepa, empa hape e eketsa bophelo ba eona ba tšebeletso.
6. Ntlafatsa ho hanyetsa ha kutu le khanyetso ea lik'hemik'hale
Li-cellulose ethers le tsona li ka ntlafatsa ho bola le khanyetso ea lik'hemik'hale ea lisebelisoa lits'ebetsong tse itseng. Ka ho etsa hore thepa e be matla le ho thibela metsi ho feta, li-cellulose ethers li ka fokotsa ka katleho tlhaselo ea lik'hemik'hale tse kotsi kapa mongobo holim'a thepa. Sena se bohlokoa haholo libakeng tse itseng tse khethehileng, joalo ka limela tsa lik'hemik'hale, tikolohong ea maoatleng kapa tikolohong ea mongobo o phahameng.
Tšebeliso ea li-cellulose ethers ka liphahlo tse sa keneleng metsi ha e ntlafatse feela ho tšoarella ha seaparo, empa hape e ntlafatsa ho hanyetsa lik'hemik'hale tse kang li-acids, alkalis le letsoai, kahoo ho lelefatsa bophelo ba tšebeletso ea thepa le ho fokotsa litšenyehelo tsa ho lokisa le ho nkela sebaka.
7. Tšireletso ea tikoloho e tala le nts'etsopele e tsitsitseng
Cellulose ether ha e le hantle ke ntho e tala ebile e boloka tikoloho hobane e nkiloe selulose ea semela sa tlhaho 'me e khona ho bola. Ha li bapisoa le lisebelisoa tsa polymer tsa maiketsetso, li-cellulose ethers ha li na tšusumetso e fokolang tikolohong 'me ha li lokolle lintho tse kotsi nakong ea tlhahiso. Ka hona, ts'ebeliso e pharaletseng ea li-cellulose ethers e kopana le litlhoko tsa hajoale tsa ts'ireletso ea tikoloho le nts'etsopele e tsitsitseng indastering ea kaho.
Melemo ea li-cellulose ethers mabapi le ho tšoarella le ts'ebetso e bonahala haholo-holo ka mokhoa o babatsehang oa ho boloka metsi, ho teteaneng, ho khomarela le ho hanyetsa boemo ba leholimo. Ha e ntlafatse feela ts'ebetso ea kaho ea thepa ea moaho, empa hape e ntlafatsa haholo ho hanyetsa mapheo a thepa, ho tšoarella le ho hanyetsa kutu, le ho lelefatsa bophelo ba tšebeletso ea thepa. Ho phaella moo, thepa e tala le ea tikoloho ea cellulose ether e boetse e etsa hore e be karolo ea bohlokoa ea tsoelo-pele ea thepa ea mohaho ea nakong e tlang.
Nako ea poso: Sep-18-2024