1. Kakaretso ea methyl hydroxyethyl cellulose (MHEC)
Methyl hydroxyethyl cellulose (MHEC) ke ether e seng ea ionic cellulose e fumanoang ka phetoho ea methylation motheong oa hydroxyethyl cellulose. Ka lebaka la sebopeho sa eona se ikhethang sa limolek'hule, MHEC e na le solubility e ntle, e teteaneng, e khomarelang, ea ho etsa lifilimi le mosebetsi oa holim'a metsi, 'me e' nile ea sebelisoa haholo ka ho roala, thepa ea mohaho, lik'hemik'hale tsa letsatsi le letsatsi le masimo a mang.
2. Kakaretso ea li-strippers tsa pente
Pente strippers ke litokisetso tsa lik'hemik'hale tse sebelisetsoang ho tlosa liaparo tse ka holimo tse kang tšepe, lehong le polasetiki. Lisebelisoa tsa khale tsa pente hangata li itšetlehile ka lisebelisoa tse thata tsa solvent, tse kang dichloromethane le toluene. Le hoja lik'hemik'hale tsena li sebetsa hantle, li na le mathata a kang ho fetoha ha maemo a phahameng, chefo le likotsi tsa tikoloho. Ka melaoana e ntseng e tsoela pele e thata ea tikoloho le ntlafatso ea litlhoko tsa tikoloho ea ts'ebetso, li-strippers tsa pente tse thehiloeng metsing le tse nang le chefo e tlase butle-butle e se e le tsona tse ka sehloohong 'marakeng.
3. Mokhoa oa ts'ebetso oa MHEC ho lipampiri tsa pente
Ho li-strippers tsa pente, MHEC e bapala karolo ea bohlokoa joalo ka mofetoleli o motenya le oa rheology:
Matla a ho tiea:
MHEC e na le phello e ntle ea ho tenya lits'ebetsong tse thehiloeng metsing. Ka ho lokisa viscosity ea stripper ea pente, MHEC e ka etsa hore stripper ea pente e khomarele libaka tse otlolohileng kapa tse sekametseng ntle le ho sisinyeha. Thepa ena e bohlokoa ka ho khetheha nakong ea ts'ebeliso ea li-strippers tsa pente hobane e lumella mochini oa ho hlobolisa pente hore o lule sebakeng se shebiloeng nako e telele, ka hona o ntlafatsa phello ea ho hlobola pente.
Ntlafatsa sistimi ea suspension:
Li-strippers tsa pente hangata li na le lisebelisoa tse fapaneng tse sebetsang, tse ka bang stratify kapa tsa lula nakong ea polokelo. Ka ho ntlafatsa viscosity ea sebopeho sa tharollo, MHEC e ka thibela ka katleho ho senya likaroloana tse tiileng, ho boloka ho aroloa ha metsoako e ts'oanang, le ho netefatsa ts'ebetso e tsitsitseng ea pente ea pente.
Fetola litšobotsi tsa rheological:
Tšebeliso ea li-strippers tsa pente e hloka hore e be le litšobotsi tse ntle tsa rheological, ke hore, e ka phalla hantle ha ho sebelisoa matla a ka ntle, empa e ka teteana ka potlako ha e eme. Sebopeho sa ketane ea limolek'hule ea MHEC e fana ka thepa e ntle ea ho kuta moriri, ke hore, ka litekanyetso tse phahameng tsa ho kuta, viscosity ea tharollo e tla fokotseha, ho etsa hore pente e be bonolo ho e sebelisa; ha e ntse e le litekanyetso tse tlaase tsa ho kuta kapa e le boemong bo tsitsitseng, viscosity ea tharollo e phahame, e thusang thepa ho etsa seaparo sa seaparo sa junifomo sebakeng se lebisitsoeng.
Khothaletsa sebopeho sa lifilimi:
Nakong ea ts'ebetso ea ho hlobolisa pente, MHEC e ka thusa mochini oa pente ho etsa filimi e ts'oanang holim'a sebaka se lebisitsoeng. Filimi ena e ke ke ea lelefatsa nako ea ts'ebetso ea lisebelisoa tse sebetsang, empa hape e ntlafatsa bokhoni ba ho koahela ha pente ea pente ho isa tekanyong e itseng, e le hore e ka kenella ka katleho likarolong tsohle tsa ho roala.
4. Mokhoa oa ho sebelisa MHEC ho li-strippers tsa pente
Ho lokisa tharollo ea aqueous:
MHEC hangata e teng ka mokhoa oa phofo 'me e hloka ho lokisoa ka tharollo e nang le metsi pele e sebelisoa. Tloaelo e akaretsang ke ho eketsa butle-butle MHEC metsing a tsositsoeng ho qoba agglomeration. Ho lokela ho hlokomeloa hore ho qhibiliha ha MHEC ho tla angoa ke mocheso oa metsi le pH ea boleng. Mocheso o phahameng oa metsi (50-60 ℃) o ka potlakisa ts'ebetso ea ho qhibiliha ha MHEC, empa mocheso o phahameng haholo o tla ama ts'ebetso ea eona ea viscosity.
E kopantsoe le li-strippers tsa pente:
Ha ho lokisoa li-strippers tsa pente, tharollo ea metsi ea MHEC hangata e eketsoa butle-butle ho metsi a motheo a pente tlas'a ho sisinyeha. E le ho etsa bonnete ba ho hasana ka mokhoa o ts'oanang, lebelo la ho eketsa MHEC ha lea lokela ho potlaka haholo, 'me ho hlohlelletsa ho lokela ho tsoela pele ho fihlela ho fumanoa tharollo e tšoanang. Mokhoa ona o hloka ho laola lebelo le susumetsang ho thibela ho thehoa ha li-bubble.
Phetoho ea foromo:
Palo ea MHEC ho li-strippers tsa pente hangata e fetoloa ho latela mokhoa o ikhethileng le ts'ebetso ea sepheo sa li-strippers tsa pente. Keketso e tloaelehileng ea chelete e pakeng tsa 0.1% -1%. Tšusumetso e matla haholo e ka baka ho roala ho sa tšoaneng kapa viscosity e feteletseng, athe tekanyo e sa lekaneng e ka 'na ea se ke ea finyella li-viscosity tse nepahetseng le thepa ea rheological, kahoo hoa hlokahala ho ntlafatsa ts'ebeliso ea eona ka liteko.
5. Melemo ea MHEC ho lipente tsa pente
Tšireletseho le tšireletso ea tikoloho:
Ha ho bapisoa le li-thickeners tse tloaelehileng, MHEC ke ether e seng ea ionic cellulose, ha e na lintho tse chefo le tse kotsi, e sireletsehile bakeng sa 'mele oa motho le tikoloho,' me e lumellana le tataiso ea tsoelo-pele ea k'hemistri ea kajeno e tala.
Botsitso bo babatsehang: MHEC e na le botsitso bo botle ba lik'hemik'hale sebakeng se seholo sa pH (pH 2-12), e ka boloka phello e tsitsitseng ea ho teteka mekhoeng e sa tšoaneng ea ho senya pente, 'me ha e sitisoe habonolo ke likarolo tse ling tsa tsamaiso.
Tšebelisano e ntle: Ka lebaka la tlhaho e seng ea ionic ea MHEC, e lumellana hantle le lisebelisoa tse ngata tse sebetsang, e ke ke ea sebelisana kapa ea baka ho se tsitse ha tsamaiso, 'me e loketse mefuta e sa tšoaneng ea ho hlahisa pente ea pente.
Phello e sebetsang hantle ea ho tenya: MHEC e ka fana ka phello e kholo ea ho teteana, ka hona e fokotsa palo ea li-thickeners tse ling ho stripper ea pente, e nolofatsa foromo le ho fokotsa litšenyehelo.
Methyl hydroxyethyl cellulose (MHEC) e sebelisitsoe haholo ho li-strippers tsa sejoale-joale tsa pente ka lebaka la botenya ba eona bo botle, botsitso le tumellano. Ka moralo o nepahetseng oa moralo le ts'ebeliso, MHEC e ka ntlafatsa haholo ts'ebetso ea li-strippers tsa pente, ea etsa hore li bonts'e ts'ebetso e phahameng le ts'ireletso ea tikoloho lits'ebetsong tse sebetsang. Nakong e tlang, ka nts'etsopele e tsoelang pele ea theknoloji ea ho hlobolisa pente le ntlafatso e tsoelang pele ea litlhoko tsa ts'ireletso ea tikoloho, litebello tsa kopo ea MHEC ho li-strippers tsa pente li tla ba tse pharaletseng.
Nako ea poso: Jun-14-2024