Li-cellulose ethers ke sehlopha sa bohlokoa sa li-additives tse ngata, tse sebelisoang haholo tšimong ea thepa ea mohaho ho ntlafatsa ts'ebetso ea lihlahisoa. Haholo-holo ka li-adhesives tsa lithaele, li-cellulose ethers li ka ntlafatsa haholo thepa ea tsona ea 'mele le lik'hemik'hale, tsa ntlafatsa ts'ebetso ea kaho, le ho matlafatsa matla a ho kopanya le ho tšoarella.
1. Lintho tsa motheo tsa cellulose ethers
Li-cellulose ethers ke li-derivatives tse fumanoang ka phetoho ea lik'hemik'hale tsa selulose ea tlhaho, 'me tse tloaelehileng li kenyelletsa methyl cellulose (MC), hydroxypropyl methyl cellulose (HPMC), hydroxyethyl cellulose (HEC), joalo-joalo. Litšobotsi tsena li etsa hore cellulose ethers e be le karolo ea bohlokoa ho li-adhesives tsa lithaele.
2. Ho boloka metsi ho ntlafalitsoe
2.1 Bohlokoa ba ho boloka metsi
Ho boloka metsi a likhomaretsi tsa lithaele ho bohlokoa molemong oa ts'ebetso ea kaho le matla a tlamahano. Ho boloka metsi hantle ho ka etsa bonnete ba hore sekhomaretsi se na le mongobo o nepahetseng nakong ea ts'ebetso ea ho folisa, ka hona ho netefatsa hore samente e na le metsi a felletseng. Haeba ho boloka metsi ho sa lekane, metsi a kenngoa habonolo ke substrate kapa tikoloho, e leng se etsang hore ho be le hydration e sa fellang, e amang matla a ho qetela le phello ea tlamahano ea sekhomaretsi.
2.2 Mokhoa oa ho boloka metsi oa cellulose ether
Cellulose ether e na le matla a phahameng haholo a ho boloka metsi 'me e ka kopanya palo e kholo ea limolek'hule tsa metsi ketane ea eona ea limolek'hule. Tharollo ea eona e phahameng ea viscosity aqueous e ka theha kabo ea metsi e ts'oanang ka har'a sekhomaretsi le ho notlela metsi ka ketso ea capillary marang-rang a sekhomaretsi ho thibela metsi hore a se ke a lahleha ka potlako. Mokhoa ona oa ho boloka metsi ha o thuse feela karabelo ea hydration ea samente, empa hape o ka eketsa nako e bulehileng ea sekhomaretsi le ho ntlafatsa ho feto-fetoha ha kaho.
3. Ntlafatsa tshebetso ya kaho
3.1 Katoloso ea nako e bulehileng
Ho kenyelletsoa ha cellulose ether ho eketsa nako e bulehileng ea li-adhesives tsa tile, ke hore, nako ea nako eo sekhomaretsi se lulang se le thata ka mor'a hore se sebelisoe holim'a substrate. Sena se fa basebetsi ba kaho nako e eketsehileng ea ho lokisa le ho beha lithaele, kahoo ba fokotsa bofokoli ba kaho bo bakoang ke khatello ea nako.
3.2 Ts'ebetso e matlafalitsoeng e khahlanong le ho sisinyeha
Nakong ea ts'ebetso ea kaho, sekhomaretsi se ka 'na sa fokotseha ka lebaka la matla a khoheli ka mor'a hore lithaele li behoe, haholo-holo ha li sebelisoa holim'a libaka tse otlolohileng. Phello e matla ea cellulose ether e ka ntlafatsa thepa ea sekhomaretsi e thibelang ho senyeha, ho etsa bonnete ba hore ha e thellehe ha e khomarela lithaele. Thepa ena e bohlokoa ka ho khetheha bakeng sa ho netefatsa ho nepahala le botle bo akaretsang ba ho beha lithaele.
3.3 Ntlafatsa mafura le ts'ebetso
Lubricity ea cellulose ether e ntlafatsa ts'ebetso ea li-adhesive tsa lithaele, e etsa hore ho be bonolo ho li sebelisa le ho ba bataletsa. Thepa ena e thusa ho fokotsa bothata le nako ea kaho le ho ntlafatsa katleho ea kaho.
4. Ntlafatsa matla a maqhama
4.1 Ntlafatsa ho khomarela ha pele
Tharollo e phahameng ea viscosity e entsoeng ke cellulose ether ka tharollo e nang le metsi a mangata e ka eketsa sekhomaretsi sa pele sa li-adhesive tsa lithaele, ho fana ka ho khomarela hang-hang ha ho behoa lithaele le ho qoba ho thella kapa ho senyeha ha lithaele.
4.2 Khothaletsa metsi a samente
Ts'ebetso e ntle ea ho boloka metsi ea cellulose ether e tiisa karabelo e feletseng ea hydration ea samente, kahoo e hlahisa lihlahisoa tse ngata tsa hydration (tse kang hydrated calcium silicate), e leng ho matlafatsang matla a ho kopanya a sekhomaretsi. Ts'ebetso ena ha e ntlafatse feela matla a mochine oa sekhomaretsi, empa hape e ntlafatsa ho tšoarella ha eona le ho hanyetsa mapheo.
5. Ho ntlafala ho tšoarella le ho hanyetsa maqheka
5.1 Khanyetso e ntlafetseng ea ho qhibiliha ha leqhoa
Li-cellulose ethers li ntlafatsa ho hanyetsa ho qhibiliha ha likhomaretsi tsa lithaele ka ho ntlafatsa ho boloka metsi le ho kopana ha likhomaretsi tsa lithaele, ho fokotsa ho falla ka potlako le tahlehelo ea metsi. Ntlafatso ena e lumella sekhomaretsi hore se boloke ts'ebetso e tsitsitseng esita le libakeng tse batang haholo 'me ha ho bonolo ho senya kapa ho robeha.
5.2 Ho ntlafala ha crack
Nakong ea ho folisa sekhomaretsi, mohaho o teteaneng oa marang-rang o entsoeng ke cellulose ethers o thusa ho fokotsa ho fokotseha ha samente le ho fokotsa kotsi ea ho phunyeha ho bakoang ke khatello ea kelello ea shrinkage. Ho phaella moo, phello e matla ea cellulose ethers e nolofalletsa sekhomaretsi hore se tlatse hantle lekhalo pakeng tsa tile le substrate, e leng ho matlafatsang botsitso ba sebopeho sa bonding.
6. Mesebetsi e meng
6.1 Fana ka thepa ea ho tlotsa le e thibelang ho sisinyeha
Lubrication ea cellulose ethers ha e thuse feela ts'ebetso ea ts'ebetso, empa e boetse e fokotsa ts'ebetso e sagging ea sekhomaretsi nakong ea ts'ebetso ea kopo, ho netefatsa ho ts'oana le botsitso nakong ea ts'ebetso ea kopo.
6.2 Bonolo bo ntlafetseng ba kaho
Ka ho eketsa viscosity le nako ea kaho ea sekhomaretsi, cellulose ether e ntlafatsa boiketlo ba kaho, e lumella basebetsi ba kaho ho lokisa boemo ba lithaele habonolo, ho fokotsa mefokolo ea kaho le litefiso tsa ho nchafatsa.
7. Mehlala ea Tšebeliso ea Cellulose Ether
Lits'ebetsong tse khethehileng, cellulose ether e ntlafatsa boleng ba morero ka kakaretso ka ho ntlafatsa ts'ebetso ea li-adhesives tsa tile. Ka mohlala, libakeng tse itseng tsa mocheso o phahameng kapa mongobo o tlaase, li-adhesives tse tloaelehileng li ka 'na tsa tobana le bothata ba ho lahleheloa ke metsi ka potlako, e leng se bakang mathata a kaho le matla a sa lekaneng. Ka mor'a ho eketsa cellulose ether, sekhomaretsi se ka boloka ho boloka metsi hantle, ho qoba mathata ana, 'me kahoo ho netefatsa boleng ba morero.
Cellulose ether e ntlafatsa haholo ts'ebetso ea li-adhesives tsa lithaele ka ho boloka metsi a eona a matle, a teteaneng le a lubricity. Ha e ntlafatse feela ts'ebetso ea kaho, matla a ho kopanya le ho tšoarella ha sekhomaretsi, empa hape e ntlafatsa boiketlo le ho tšepahala ha mohaho. Lintlafatso tsena ha li ntlafatse boleng bo akaretsang ba morero, empa hape li fana ka phetoho e kholoanyane le botsitso bakeng sa ts'ebetso ea kaho. Ka hona, e le tlatsetso ea bohlokoa, ho sebelisoa ha cellulose ether ka li-adhesives tsa tile ho na le bohlokoa ba bohlokoa bo sebetsang le litebello tse pharaletseng.
Nako ea poso: Jun-24-2024