1. Kakaretso:
Cellulose ether ke motsoako oa tlhaho oa polymer, sebopeho sa eona sa lik'hemik'hale ke polysaccharide macromolecule e thehiloeng ho anhydrous β-glucose, 'me ho na le sehlopha se le seng sa mantlha sa hydroxyl le lihlopha tse peli tsa bobeli tsa hydroxyl lesale le leng le le leng la motheo. Ka phetoho ea lik'hemik'hale, letoto la lihlahisoa tsa cellulose li ka fumanoa, 'me cellulose ether ke e' ngoe ea tsona. Cellulose ether ke motsoako oa polymer o nang le sebopeho sa ether se entsoeng ka selulose, joalo ka methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, joalo-joalo Ka kakaretso, e ka fumanoa ka ketso ea alkali cellulose le monochloroalkane, ethylene oxide. , propylene oxide kapa monochloroacetic acid.
2. Tshebetso le Likarolo:
(1) Litšobotsi tsa ponahalo
Cellulose ether ka kakaretso e tšoeu kapa e le milky white, ha e na monko, ha e chefo, e mokelikeli o nang le fibrous powder, ho bonolo ho monya mongobo, 'me e qhibiliha ho ba colloid e tsitsitseng e hlakileng ea viscous ka metsing.
(2) Ho thehoa ha filimi le ho khomarela
The etherification ea cellulose ether e na le tšusumetso e kholo litšoanelehong tsa eona le ts'ebetsong, joalo ka ho qhibiliha, bokhoni ba ho etsa filimi, matla a tlamahano le ho hanyetsa letsoai. Cellulose ether e na le matla a phahameng a mechine, ho feto-fetoha ha maemo, ho hanyetsa mocheso le ho hanyetsa serame, 'me e lumellana hantle le li-resin tse sa tšoaneng le li-plasticizers,' me e ka sebelisoa ho etsa polasetiki, lifilimi, li-varnish, li-adhesives, latex le lisebelisoa tsa ho roala Lithethefatsi, joalo-joalo.
(3) Ho qhibiliha ha metsi
Methylcellulose e qhibiliha ka metsing a batang, ha e qhibilihe metsing a chesang, hape e qhibiliha ka har'a metsoako e meng ea tlhaho; methyl hydroxyethyl cellulose e qhibiliha ka metsing a batang, ha e qhibilihe metsing a chesang le lihlapolli tsa tlhaho. Leha ho le joalo, ha tharollo ea metsi ea methylcellulose le methylhydroxyethylcellulose e futhumala, methylcellulose le methylhydroxyethylcellulose li tla fokotseha. Methylcellulose e theoha ka 45-60 ° C, ha mocheso oa pula oa etherified etherified methyl hydroxyethyl cellulose o nyolohela ho 65-80 ° C. Ha mocheso o theoha, pula e qhibiliha hape. Hydroxyethyl cellulose le sodium carboxymethyl hydroxyethyl cellulose li qhibiliha metsing ka mocheso ofe kapa ofe 'me ha li qhibilihe ka har'a metsoako ea lintho tse phelang.
(4) ho tenya
Cellulose ether e qhibiliha ka metsing ka mokhoa oa colloidal, 'me viscosity ea eona e itšetlehile ka tekanyo ea polymerization ea cellulose ether. Tharollo e na le li-macromolecules tse hydrated. Ka lebaka la ho ts'oaroa ha li-macromolecules, mokhoa oa ho phalla oa tharollo o fapane le oa metsi a Newton, empa o bontša boitšoaro bo fetohang ka liphetoho tsa matla a ho kuta. Ka lebaka la sebopeho sa macromolecular ea cellulose ether, viscosity ea tharollo e eketseha ka potlako ka keketseho ea mahloriso mme e fokotseha ka potlako ka ho eketseha ha mocheso.
Kopo
(1) Indasteri ea peterole
Sodium carboxymethyl cellulose e sebelisoa haholo-holo ha ho ntšoa oli, 'me e sebelisoa ha ho etsoa seretse ho eketsa ponahalo le ho fokotsa tahlehelo ea metsi. E ka hanela tšilafalo e fapaneng ea letsoai le ho eketsa ho hlaphoheloa ha oli. Sodium carboxymethyl hydroxypropyl cellulose (NaCMHPC) le sodium carboxymethyl hydroxyethyl cellulose (NaCMHEC) ke lisebelisoa tse ntle tsa ho cheka seretse le lisebelisoa tsa ho lokisa maro a phethoang, ka sekhahla se phahameng sa slurrying le ho hanyetsa letsoai, ts'ebetso e ntle ea anti-calcium, bokhoni bo botle ba ho eketsa viscosity, ho hanyetsa mocheso. (160 ℃) thepa. E loketse bakeng sa ho lokisa maro a ho cheka bakeng sa metsi a hloekileng, metsi a leoatle le metsi a letsoai a tletseng letsoai. E ka etsoa hore e be maro a ho cheka a mefuta e fapaneng ea density (103-127g/cm3) ka tlas'a boima ba calcium chloride, 'me e na le viscosity e itseng le tahlehelo ea mokelikeli o tlase, bokhoni ba eona bo eketsang viscosity le tahlehelo ea mokelikeli o fokotsehileng bo betere ho feta hydroxyethyl cellulose. , 'me ke tlatsetso e ntle bakeng sa ho eketsa tlhahiso ea oli.
Sodium carboxymethyl cellulose ke derivative ea cellulose e sebelisoang haholo ts'ebetsong ea ho ntša oli. E sebelisoa ho mokelikeli oa ho cheka, mokelikeli o samenteng, mokelikeli oa fracturing le ho ntlafatsa ho hlaphoheloa ha oli, haholo-holo mokelikeli oa ho cheka. Haholo-holo e bapala karolo ea ho fokotsa tahlehelo ea mokelikeli le ho eketsa viscosity. Hydroxyethyl cellulose (HEC) e sebelisoa e le seretse se teteaneng le se tsitsitseng nakong ea ho cheka, ho phethoa ha seliba le ho tiisa. Ha ho bapisoa le sodium carboxymethyl cellulose le guar gum, hydroxyethyl cellulose e na le phello e ntle ea ho teteana, ho emisoa ha lehlabathe le matla, matla a letsoai a phahameng, ho hanyetsa mocheso o motle, ho hanyetsa ho kopanya ho fokolang, tahlehelo e fokolang ea metsi, le ho robeha ha gel. Block, masala a tlaase le litšobotsi tse ling, li 'nile tsa sebelisoa haholo.
(2) Indasteri ea kaho le pente
Sodium carboxymethyl cellulose e ka sebelisoa e le retarder, sesebelisoa sa ho boloka metsi, thickener le binder bakeng sa moaho oa masonry le lipula tsa seretse, 'me e ka sebelisoa e le samente, seretse le lisebelisoa tsa ho theola fatše bakeng sa motheo oa gypsum le setsi sa samente E sebelisoa e le dispersant, metsi. sekoaelo le setenya. Motsoako o khethehileng oa masonry le seretse se entsoeng ka carboxymethyl cellulose, e ka ntlafatsang ts'ebetso, ho boloka metsi le ho hanyetsa mapheo a seretse, le ho qoba ho phatloha le likheo leboteng la block. moropa. Lisebelisoa tsa ho khabisa ka holim'a mohaho Cao Mingqian le ba bang ba ile ba etsa thepa ea mokhabiso ea holim'a mohaho e sa silafatseng tikoloho ho tloha methyl cellulose. Mokhoa oa tlhahiso o bonolo ebile o hloekile. E ka sebelisoa bakeng sa marako a marang-rang a marang-rang le lithaele tsa majoe, hape e ka sebelisoa bakeng sa mokhabiso oa holim'a litšiea le liemahale.
(3) Indasteri ea letsatsi le letsatsi ea lik'hemik'hale
The stabilizing viscosifier sodium carboxymethyl cellulose e bapala karolo ea ho hasana le ho emisa botsitso lihlahisoa tsa pente ea thepa e tala ea phofo, 'me e bapala karolo ea ho tenya, ho hasanya le ho etsa homogenizing ho litlolo tsa mokelikeli kapa tsa emulsion. E ka sebelisoa e le stabilizer le tackifier. Emulsion stabilizers li sebelisoa e le emulsifiers, thickeners le stabilizers bakeng sa mafura le shampoos.Sodium carboxymethyl hydroxypropyl selulosee ka sebelisoa e le stabilizer bakeng sa li-adhesives tsa sesepa sa meno. E na le thepa e ntle ea thixotropic, e etsang hore sesepa sa meno se be molemo ka sebopeho, polokelo ea nako e telele ntle le deformation, le tatso e ts'oanang le e bonolo. Sodium carboxymethyl hydroxypropyl cellulose e na le khanyetso e phahameng ea letsoai le ho hanyetsa acid, 'me phello ea eona e phahametse haholo ea carboxymethyl cellulose. E ka sebelisoa e le ntho e teteaneng ka har'a li-detergents le anti-stain agent. Dispersion thickener tlhahisong ea li-detergents, sodium carboxymethylcellulose hangata e sebelisoa e le dispersant ea litšila bakeng sa phofo ea ho hlatsoa, thickener le dispersant bakeng sa lisebelisoa tsa metsi.
(4) Indasteri ea meriana le lijo
Lefapheng la meriana, hydroxypropyl carboxymethylcellulose (HPMC) e ka sebelisoa e le mothusi oa lithethefatsi, e sebelisoang haholo ho lokolloa ha lithethefatsi tsa molomo le litokisetso tse tsitsitseng tsa tokollo, e le thepa e thibelang ho lokolloa ho laola ho lokolloa ha lithethefatsi, e le thepa ea ho roala ho lieha ho lokolloa. li-formulation, li-pellets tse lokollotsoeng ka nako e telele, li-capsules tsa tokollo e atolositsoeng. Tse sebelisoang haholo ke methyl carboxymethyl cellulose le ethyl carboxymethyl cellulose, joalo ka MC, tseo hangata li sebelisetsoang ho etsa matlapa le li-capsules, kapa ho tlotsa matlapa a tlotsitsoeng ka tsoekere. Li-premium grade cellulose ethers li ka sebelisoa indastering ea lijo, 'me ke li-thickeners tse sebetsang hantle, li-stabilizers, li-excipients, li-ajenti tse bolokang metsi le li-foam tse entsoeng ka mochini lijong tse fapaneng. Methyl cellulose le hydroxypropyl methyl cellulose li amohetsoe e le lintho tse se nang kotsi tsa metabolic tse se nang kotsi. Bohloeki bo phahameng (ka holimo ho 99.5%) carboxymethylcellulose (CMC) e ka eketsoa lijong, joalo ka lihlahisoa tsa lebese le tranelate, li-condiments, jeme, jeli, lijo tse entsoeng ka makotikoting, sirapo ea tafole le lino tse tahang. Carboxymethyl cellulose e nang le bohloeki bo fetang 90% e ka sebelisoa likarolong tse amanang le lijo, joalo ka ho tsamaisa le ho boloka litholoana tse ncha. Mofuta ona oa ho phuthela ka polasetiki o na le melemo ea ho boloka lintho tse ncha, tšilafalo e fokolang, ha ho na tšenyo le tlhahiso e bonolo ea mochine.
(5) Lisebelisoa tsa Optical le tsa motlakase tse sebetsang
Electrolyte thickening stabilizer e na le bohloeki bo phahameng ba selulose ether, ho hanyetsa acid e ntle le ho hanyetsa letsoai, haholo-holo tšepe e tlaase le tšepe e boima, kahoo colloid e tsitsitse haholo, e loketse libeteri tsa alkaline, libeteri tsa zinki-manganese Electrolyte thickening stabilizer. Li-ether tse ngata tsa cellulose li bonts'a kristale ea mokelikeli oa thermotropic. Hydroxypropyl cellulose acetate e etsa likristale tsa metsi a thermotropic cholesteric ka tlase ho 164°C.
Nako ea poso: Jan-12-2023