Litšobotsi, tokisetso le tšebeliso ea cellulose ether indastering

Mefuta, mekhoa ea ho itokisa, thepa le litšobotsi tsa cellulose ether li ile tsa hlahlojoa, hammoho le ho sebelisoa ha cellulose ether ka petroleum, kaho, ho etsa pampiri, masela, meriana, lijo, lisebelisoa tsa photoelectric le indasteri ea letsatsi le letsatsi ea lik'hemik'hale. Mefuta e meng e mecha ea lintho tse nkiloeng ho cellulose ether e nang le tebello ea nts'etsopele e ile ea hlahisoa 'me menyetla ea ts'ebeliso ea bona ea ntlafatsoa.

Mantsoe a bohlokoa:cellulose ether; Tshebetso; Kopo; Lintho tse tsoang ho cellulose

Cellulose ke mofuta oa motsoako oa tlhaho oa polymer. Sebopeho sa eona sa lik'hemik'hale ke polysaccharide macromolecule e nang le β-glucose ea anhydrous e le selikalikoe sa motheo, se nang le sehlopha se le seng sa mantlha sa hydroxyl le lihlopha tse peli tsa bobeli tsa hydroxyl lesale la motheo ka leng. Ka phetoho ea lik'hemik'hale, letoto la li-derivatives tsa cellulose li ka fumanoa, cellulose ether ke e 'ngoe ea tsona. Cellulose ether e fumanoa ka karabelo ea cellulose le NaOH, ebe e etherize ka li-monomers tse fapaneng tse sebetsang joalo ka methane chloride, ethylene oxide, propylene oxide, joalo-joalo, ka ho hlatsoa letsoai le selulose ea sodium. Cellulose ether ke motsoako oa bohlokoa oa selulose, o ka sebelisoa haholo meriana le bophelo bo botle, lik'hemik'hale tsa letsatsi le letsatsi, pampiri, lijo, meriana, kaho, thepa le liindasteri tse ling. Ka hona, nts'etsopele le ts'ebeliso ea cellulose ether e na le moelelo o motle bakeng sa ts'ebeliso e felletseng ea lisebelisoa tsa biomass tse nchafalitsoeng, nts'etsopele ea lisebelisoa tse ncha le mahlale a macha.

1. Ho khetholla le ho lokisetsa cellulose ether

Kakaretso ea li-cellulose ethers e arotsoe ka mekhahlelo e mene ho latela thepa ea bona ea ionic.

1.1 Nonionic cellulose ether

Non-ionic cellulose ether haholo-holo cellulose alkyl ether, mokhoa oa ho lokisetsa ke ka selulose le NaOH reaction, 'me joale ka mefuta e fapaneng ea li-monomers tse sebetsang tse kang methane chloride, ethylene oxide, propylene oxide etherification reaction,' me joale ka ho hlatsoa lihlahisoa. letsoai le sodium cellulose ho fumana. The main methyl cellulose ether, methyl hydroxyethyl cellulose ether, methyl hydroxypropyl cellulose ether, hydroxyethyl cellulose ether, cyanoethyl cellulose ether, hydroxybutyl cellulose ether. Tšebeliso ea eona e pharaletseng haholo.

1.2 Anionic cellulose ether

Anionic cellulose ether haholo-holo carboxymethyl cellulose sodium, carboxymethyl hydroxyethyl cellulose sodium. Mokhoa oa ho lokisetsa ke ka karabelo ea selulose le NaOH, 'me joale etherify le monochloroacetic acid kapa ethylene oxide, propylene oxide,' me joale hlatsoa ka-sehlahisoa letsoai le sodium selulose ho fumana.

1.3 cationic cellulose ether

Cationic cellulose ether haholo-holo ke 3 – chlorine – 2 – hydroxypropyl trimethyl ammonium chloride cellulose ether. Mokhoa oa ho lokisa ke ka karabelo ea selulose le NaOH, ebe cationic etherifying agent 3 - chlorine - 2 - hydroxypropyl trimethyl ammonium chloride kapa ethylene oxide, propylene oxide hammoho le etherifying reaction, 'me joale ka ho hlatsoa letsoai le sodium. cellulose ho fumana.

1.4 Zwitterionic cellulose ether

Zwitterionic cellulose ether e na le lihlopha tse peli tsa anionic le lihlopha tsa cationic holim'a ketane ea molek'hule, mokhoa oa ho lokisetsa ke ka cellulose le NaOH reaction, ebe ka chloroacetic acid le cationic etherifying agent 3 - chlorine - 2 hydroxypropyl trimethyl ammonium chloride etherification reaction, ebe e hlatsuoa. ka sehlahiswa letsoai le sodium cellulose le ho fumanoa.

2.thepa le litšobotsi tsa cellulose ether

2.1 Likarolo tsa Ponahalo

Cellulose ether ka kakaretso e tšoeu kapa e bosoeu ba lebese, ha e latsoehe, ha e chefo, e na le metsi a phofo ea fibrous, e bonolo ho monya mongobo, e qhibilihisoa ka metsing ho ba colloid e tsitsitseng ea viscous e bonaletsang.

2.2 Ho theha filimi le ho khomarela

The etherification ea cellulose ether e na le tšusumetso e kholo linthong tsa eona, tse kang solubility, bokhoni ba ho etsa filimi, matla a tlamahano le mamello ea 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 na le tumellano e ntle le mefuta e sa tšoaneng ea li-resin le li-plasticizers, e ka sebelisoa ho etsa polasetiki, lifilimi, li-varnish, li-adhesives, latex le lisebelisoa tsa ho roala meriana.

2.3 Ho qhibiliha ha metsi

Methyl cellulose e qhibilihang ka metsing a batang, e sa qhibilihe ka metsing a chesang, empa hape e qhibiliha ka har'a litlhare tse ling tsa manyolo; Methyl hydroxyethyl cellulose e qhibilihang ka metsing a batang, e ke keng ea qhibiliha ka metsing a chesang le metsoako ea tlhaho. Empa ha tharollo e nang le metsi ea methyl cellulose le methyl hydroxyethyl cellulose e futhumatsoa, ​​methyl cellulose le methyl hydroxyethyl cellulose li tla tsoa. Methyl cellulose e oele ho 45 ~ 60 ℃, ha etherized etherized methyl hydroxyethyl cellulose e oele ho 65 ~ 80 ℃. Ha mocheso o theoha, metsi a qhibiliha hape.

Sodium hydroxyethyl cellulose le carboxymethyl hydroxyethyl cellulose li qhibiliha metsing ka mocheso ofe kapa ofe, empa ha li qhibilihe ka har'a metsoako ea tlhaho (ntle le mekhelo e seng mekae).

2.4 Ho tiisa

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 macromolecules ea hydration. Ka lebaka la ho kenngoa ha li-macromolecules, mokhoa oa ho phalla oa tharollo o fapane le oa metsi a Newton, empa o bontša boitšoaro bo fapaneng le phetoho ea matla a ho kuta. Ka lebaka la sebopeho sa macromolecular ea cellulose ether, viscosity ea tharollo e eketseha ka potlako ka ho tsepamisa mohopolo mme e fokotseha ka potlako ka mocheso o ntseng o eketseha.

2.5 Ho fokotseha

Cellulose ether e sebelisoa sebakeng sa metsi. Hafeela metsi a ntse a le teng, libaktheria li tla hōla. Ho hōla ha libaktheria ho lebisa tlhahisong ea libaktheria tsa enzyme. Baktheria ea enzyme e ile ea etsa bond ea unit ea glucose e sa nkeloang sebaka e haufi le selulose ether break mme boima ba molek'hule ea polymer bo fokotsehile. Ka hona, haeba tharollo ea metsi ea cellulose ether e lokela ho bolokoa nako e telele, ho lokela ho ekeletsoa ho eona, esita le haeba ho sebelisoa antibacterial cellulose ether.

3.ts'ebeliso ea cellulose ether indastering

3.1 Indasteri ea Petroleum

Sodium carboxymethyl cellulose e sebelisoa haholo ts'ebetsong ea peterole. E sebelisoa ha ho etsoa seretse ho eketsa viscosity le ho fokotsa tahlehelo ea metsi. E ka hanela tšilafalo e fapaneng ea letsoai le ho ntlafatsa sekhahla sa ho hlaphoheloa ha oli.

Sodium carboxymethyl hydroxypropyl cellulose le sodium carboxymethyl hydroxyethyl cellulose ke mofuta o betere oa ho cheka seretse le ho lokisa lisebelisoa tsa mokelikeli o phethoang, sekhahla se phahameng sa ho phunya letsoai, ho hanyetsa calcium, bokhoni bo botle ba viscosification, ho hanyetsa mocheso (160 ℃). E loketse bakeng sa ho lokisa metsi a hloekileng, metsi a leoatle le metsi a cheka a letsoai a tletseng letsoai, tlas'a boima ba k'halsiamo chloride e ka kopanngoa ka mefuta e sa tšoaneng ea densities (103 ~ 1279 / cm3) ea ho cheka metsi, 'me e etsa hore e be le viscosity e itseng le filtration e tlaase. bokhoni, viscosity ea eona le matla a ho hloekisa li molemo ho feta hydroxyethyl cellulose, ke lisebelisoa tse ntle tsa tlhahiso ea oli. Sodium carboxymethyl cellulose e sebelisoa haholo ts'ebetsong ea ts'ebeliso ea petroleum ea derivatives ea selulose, ho mokelikeli oa ho cheka, mokelikeli oa samente, mokelikeli oa fracturing le ho ntlafatsa tlhahiso ea oli, haholo-holo ts'ebelisong ea mokelikeli oa ho cheka e kholoanyane, ntho e ka sehloohong e tlohang le ho lulisa ho filtration le viscosification.

Hydroxyethyl cellulose e sebelisoa ts'ebetsong ea ho cheka, ho phethoa le ho kenya samente joalo ka seretse se teteaneng sa seretse. Hobane hydroxyethyl cellulose le sodium carboxymethyl cellulose, guar gum ha e bapisoa le phello e ntle ea ho teteka, lehlabathe le emisitsoeng, letsoai le lengata, ho hanyetsa mocheso o motle, le ho hanyetsa ho fokolang, tahlehelo e fokolang ea metsi, lejoe la rabara le robehileng, litšoaneleho tse fokolang tse setseng, li sebelisitsoe haholo.

3.2 Indasteri ea kaho le ho roala

Motsoako oa seretse sa moaho le seretse: sodium carboxymethyl cellulose e ka sebelisoa e le moemeli oa ho lieha, ho boloka metsi, motenya le sekontiri, e ka sebelisoa e le gypsum e ka tlase le samente e tlase ea samente, seretse le lisebelisoa tse behang fatše, moemeli oa ho boloka metsi, motenya. Ke mofuta oa motsoako o khethehileng oa masonry le seretse sa seretse bakeng sa li-block tsa konkreite tse entsoeng ka carboxymethyl cellulose, tse ka ntlafatsang ts'ebetso, ho boloka metsi le ho hanyetsa mapheo a seretse le ho qoba ho phatloha le sekoti sa lebota la block.

Lisebelisoa tsa mokhabiso oa holim'a mohaho: Cao Mingqian le selulose tse ling tsa methyl tse entsoeng ka mofuta oa tšireletso ea tikoloho thepa ea mokhabiso, mokhoa oa eona oa ho hlahisa o bonolo, o hloekile, o ka sebelisoa bakeng sa lerako le phahameng, lejoe la majoe, le ka boela la sebelisoa bakeng sa kholomo. , mokhabiso oa holim'a letlapa. Huang Jianping e entsoeng ka carboxymethyl cellulose ke mofuta oa ceramic tile sealant, e nang le matla a maqhama a matla, bokhoni bo botle ba deformation, ha e hlahise mapetsong le ho oa, phello e ntle ea ho thibela metsi, 'mala o khanyang le o mebala-bala, o nang le phello e babatsehang ea ho khabisa.

Kopo ka liphahlo: Methyl cellulose le hydroxyethyl cellulose e ka sebelisoa e le stabilizer, thickener le metsi a bolokang metsi bakeng sa liphahlo tsa latex, ho phaella moo, e ka boela ea sebelisoa e le dispersant, viscosifier le filimi e etsang moemeli bakeng sa liaparo tsa samente tse mebala-bala. Ho kenyelletsa cellulose ether ka litlhaloso tse nepahetseng le viscosity ho pente ea latex ho ka ntlafatsa ts'ebetso ea kaho ea pente ea latex, ho thibela spatter, ho ntlafatsa botsitso ba polokelo le matla a ho koahela. Sebaka se ka sehloohong sa bareki linaheng tse ling ke liaparo tsa latex, ka hona, lihlahisoa tsa cellulose ether hangata e ba khetho ea pele ea pente ea latex. Ka mohlala, methyl hydroxyethyl cellulose ether e fetotsoeng e ka boloka boemo bo ka sehloohong ho pente e teteaneng ea latex ka lebaka la thepa ea eona e ntle e pharaletseng. Mohlala, hobane cellulose ether e na le litšobotsi tse ikhethang tsa gel ea mocheso le ho qhibiliha, ho hanyetsa letsoai, ho hanyetsa mocheso, 'me e na le ts'ebetso e nepahetseng ea holim'a metsi, e ka sebelisoa e le moemeli oa ho boloka metsi, moemeli oa ho emisa, emulsifier, filimi ea ho etsa filimi, lubricant, binder le phetoho ea rheological. .

3.3 Indasteri ea Lipampiri

Li-additives tse nang le pampiri: CMC e ka sebelisoa e le fiber dispersant le e matlafatsang pampiri, e ka ekeletsoa pulp, hobane sodium carboxymethyl cellulose le pulp le likaroloana tsa ho paka li na le tefiso e tšoanang, e ka eketsa ho lekana ha fiber, ea ntlafatsa matla a pampiri. E le reinforcer e kenyellelitsoeng ka hare ho pampiri, e eketsa tšebelisano-'moho pakeng tsa likhoele, 'me e ka ntlafatsa matla a tsitsitseng, ho hanyetsa khefu, ho lekana ha pampiri le li-index tse ling tsa' mele. Sodium carboxymethyl cellulose e ka boela ea sebelisoa e le sesebelisoa sa boholo ka har'a makhasi. Ntle le tekanyo ea eona ea boholo, e ka sebelisoa hape e le sesebelisoa se sireletsang sa rosin, AKD le lisebelisoa tse ling tsa boholo. Cationic cellulose ether e ka boela ea sebelisoa e le filthara ea thuso ea ho boloka pampiri, ho ntlafatsa sekhahla sa ho boloka fiber e ntle le li-filler, e ka boela ea sebelisoa e le ho tiisa pampiri.

Sekhomaretsi sa ho roala: Se sebelisetsoa ho koahela sekhomaretsi sa pampiri se koahelang, se ka nka sebaka sa chisi, karolo ea latex, e le hore enke ea khatiso e kenelle habonolo, bohale bo hlakileng. E ka boela ea sebelisoa e le pigment dispersant, viscosifier le stabilizer.

Setsi sa boholo bo kaholimo: Sodium carboxymethyl cellulose e ka sebelisoa e le sesebelisoa sa boholo ba pampiri, e ntlafatsa matla a holim'a pampiri, ha e bapisoa le ts'ebeliso ea hona joale ea joala ba polyvinyl, starch e fetotsoeng kamora hore matla a holim'a metsi a ka eketsoa ka hoo e ka bang 10%, litekanyetso li fokotsehile. ka hoo e ka bang 30%. Ke sesebelisoa se tšepisang sa boholo ba bokaholimo bakeng sa ho etsa pampiri, 'me letoto la eona la mefuta e mecha le lokela ho ntlafatsoa ka mafolofolo. Cationic cellulose ether e na le ts'ebetso e ntle ho feta ea cationic starch, eseng feela e ka ntlafatsang matla a holim'a pampiri, empa hape e ka ntlafatsa ho monya ha pampiri ea enke, ho eketsa phello ea ho daea, hape ke ntho e tšepisang holim'a boholo bo boholo.

3.4 Indasteri ea masela

Indastering ea masela, cellulose ether e ka sebelisoa e le sesebelisoa sa boholo, se lekanyang le setenya bakeng sa pulp ea masela.

Sizing agent: cellulose ether e kang sodium carboxymethyl cellulose, hydroxyethyl carboxymethyl cellulose ether, hydroxypropyl carboxymethyl cellulose ether le mefuta e meng e ka sebelisoa e le lisebelisoa, 'me ha ho bonolo ho senyeha le hlobo, ho hatisa le ho daea, ntle le ho lahla, ho khothalletsa dae ho ka fumana junifomo. colloid ka metsing.

Moemeli oa boemo: o ka ntlafatsa matla a hydrophilic le osmotic a dae, hobane phetoho ea viscosity e nyane, ho bonolo ho fetola phapang ea mebala; Cationic cellulose ether e boetse e na le phello ea ho daea le ho kenya mebala.

Sehlahisoa se teteaneng: sodium carboxymethyl cellulose, hydroxyethyl carboxymethyl cellulose ether, hydroxypropyl carboxymethyl cellulose ether e ka sebelisoa e le sesebelisoa sa ho hatisa le ho daea slurry thickening, se nang le masala a manyane, litšoaneleho tse phahameng tsa mebala, ke sehlopha sa lisebelisoa tse ka bang teng tsa masela.

3.5 Indasteri ea lik'hemik'hale tsa malapeng

Viscosifier e tsitsitseng: Sodium methylcellulose ka har'a lihlahisoa tse entsoeng ka phofo tse tala li bapala botsitso ba ho emisa ho hasana, ka litlolo tsa metsi kapa tsa emulsion tse ntseng li teteana, ho hasana, homogenizing le likarolo tse ling. E ka sebelisoa e le stabilizer le viscosifier.

Emulsifying stabilizer: etsa setlolo, shampoo emulsifier, thickening agent le stabilizer. Sodium carboxymethyl hydroxypropyl cellulose e ka sebelisoa e le sekhomaretsi sa sekhomaretsi sa meno, se nang le thepa e ntle ea thixotropic, e le hore sesepa sa meno se na le sebopeho se setle, deformation ea nako e telele, junifomo le tatso e bobebe. Sodium carboxymethyl hydroxypropyl cellulose ho hanyetsa letsoai, ho hanyetsa acid ho phahame, phello e molemo ho feta carboxymethyl cellulose, e ka sebelisoa e le sesepa ho viscosifier, moemeli oa ho thibela litšila.

Dispersion thickener: Ho hlahisoeng ha sesepa, tšebeliso e akaretsang ea sodium carboxymethyl cellulose e le detergent detergent dirt dispersant, liquid detergent thickener le dispersant.

3.6 Liindasteri tsa meriana le lijo

Indastering ea meriana, hydroxypropyl carboxymethyl cellulose e ka sebelisoa e le li-excipients tsa lithethefatsi, tse sebelisoang haholo ho lokolloa ha masapo a molomo le litokisetso tse tsitsitseng tsa tokollo, e le lisebelisoa tse thibelang ho laola ho lokolloa ha lithethefatsi, e le lisebelisoa tsa ho roala tse tsitsitseng, li-pellets tse tsoelang pele. , li-capsules tse lokolloang tse tsitsitseng. E sebelisoang haholo ke methyl carboxymethyl cellulose, ethyl carboxymethyl cellulose, joalo ka MC hangata e sebelisoa ha ho etsoa matlapa le li-capsules, kapa matlapa a tlotsitsoeng ka tsoekere.

Boemo ba boleng ba cellulose ether bo ka sebelisoa indastering ea lijo, lijong tse fapaneng ho na le sesebelisoa se matla sa 'mele, emulsifier, stabilizer, excipient, sesebelisoa sa ho boloka metsi le mochini o phoroselang oa mochini. Methyl cellulose le hydroxypropyl methyl cellulose li amohetsoe e le lintho tse se nang kotsi tsa metabolism. Bohloeki bo phahameng (99.5% kapa ho feta bohloeki) carboxymethyl cellulose e ka kenngoa lijong, tse kang lebese le lihlahisoa tsa tranelate, li-condiments, jeme, jelly, makotikoti, li-syrups tsa tafole le lino. Ho hloeka ha cellulose e fetang 90% ea carboxymethyl e ka sebelisoa likarolong tse amanang le lijo, tse kang ho sebelisoa ho tsamaisa le ho boloka litholoana tse ncha, sekoahelo sa polasetiki se na le phello e ntle ea ho boloka, tšilafalo e fokolang, ha ho na tšenyo, melemo ea tlhahiso ea mechine e bonolo.

3.7 Lisebelisoa tsa optical le tsa motlakase

Electrolyte thickening stabilizer: ka lebaka la bohloeki bo phahameng ba selulose ether, ho hanyetsa acid e ntle, ho hanyetsa letsoai, haholo-holo tšepe le tšepe e boima e tlaase, kahoo colloid e tsitsitse haholo, e loketse betri ea alkaline, zinki manganese betri electrolyte thickening stabilizer.

Lisebelisoa tsa kristale ea metsi: Ho tloha ka 1976, ho sibolloa ha pele ha hydroxypropyl cellulose - metsi a metsi a crystal ask phase, e fumanoe ka tharollo e loketseng ea manyolo, lihlahisoa tse ngata tsa cellulose tse nang le khatello e phahameng li ka etsa tharollo ea anisotropic, mohlala, hydroxypropyl cellulose le acetate ea eona, propionate. , benzoate, phthalate, acetyxyethyl cellulose, hydroxyethyl cellulose, joalo-joalo Ntle le ho etsa motsoako oa colloidal ionic liquid crystal solution, li-ester tse ling tsa hydroxypropyl cellulose li boetse li bontša thepa ena.

Li-ether tse ngata tsa cellulose li bonts'a thepa ea kristale ea mokelikeli oa thermotropic. Acetyl hydroxypropyl cellulose e thehile kristale ea mokelikeli oa thermogenic cholesteric ka tlase ho 164 ℃. Acetoacetate hydroxypropyl cellulose, trifluoroacetate hydroxypropyl cellulose, hydroxypropyl cellulose le lihlahisoa tsa eona, ethyl hydroxypropyl cellulose, trimethylsiliccellulose le butyldimethylsiliccellulose, heptyl cellulose le butoxylethyl cellulose cellulose, crystal cellulose, joalo-joalo . Li-cellulose tse ling tse kang cellulose benzoate, p-methoxybenzoate le p-methylbenzoate, cellulose heptanate e ka etsa likristale tsa metsi a thermogenic cholesteric.

Lisebelisoa tsa motlakase tsa motlakase: cyanoethyl cellulose etherifying agent bakeng sa acrylonitrile, dielectric constant constant, low loss coefficient, e ka sebelisoa e le phosphorus le electroluminescent resin matrix matrix le transformer insulation.

4. Mantsoe a ho Koala

Ho sebelisa phetoho ea lik'hemik'hale ho fumana li-derivatives tsa cellulose tse nang le mesebetsi e khethehileng ke mokhoa o atlehang oa ho fumana lisebelisoa tse ncha bakeng sa cellulose, ntho e kholo ka ho fetisisa ea tlhaho ea tlhaho lefatšeng. E le e 'ngoe ea lintho tse tsoang ho cellulose, cellulose ether e kang physiological se nang kotsi, lisebelisoa tse se nang tšilafalo tse qhibilihang ka metsing ka lebaka la thepa ea eona e babatsehang, e sebelisitsoe liindasteri tse ngata,' me e tla ba le tebello e pharaletseng ea tsoelo-pele.