Focus on Cellulose ethers

Hydroxyethyl cellulose

Hydroxyethyl cellulose

Hydroxyethyl cellulose (HEC) ke motsoako oa ether oa selulose o se nang ionic o ka phelisang hammoho le lipolymer tse ling tse ngata tse qhibilihang metsing, li-surfactants le matsoai.HEC e na le thepa ea ho tiisa, ho emisa, ho khomarela, emulsification, ho thehoa ha filimi e tsitsitseng, ho hasana, ho boloka metsi, ho sireletsa likokoana-hloko le tšireletso ea colloidal.E ka sebelisoa haholo ho roala, litlolo, ho cheka oli le liindasteri tse ling.

Lintho tse ka sehloohong tsa Hydroxyethyl cellulose(HEC) ke hore e ka qhibiliha ka metsing a batang le metsing a chesang, 'me ha e na litšobotsi tsa gel.E na le mefuta e mengata ea ho fetola, ho qhibiliha le viscosity.E na le botsitso bo botle ba mocheso (ka tlase ho 140 ° C) 'me ha e hlahise tlas'a maemo a asiti.pula.Tharollo ea hydroxyethyl cellulose e ka etsa filimi e hlakileng, e nang le likarolo tse seng tsa ionic tse sa sebelisaneng le li-ion le ho lumellana hantle.

Tlhaloso ea Lik'hemik'hale

Ponahalo Phofo e tšoeu ho isa ho e tšoeu
Boholo ba likaroloana 98% e feta 100 mesh
Molar substituting ka degree (MS) 1.8~2.5
Masalla ha a tuka (%) ≤0.5
pH boleng 5.0~8.0
Mongobo (%) ≤5.0

 

Lihlahisoa Mephato 

HECmophato Viscosity

(NDJ, mPa.s, 2%)

Viscosity

(Brookfield, mPa.s, 1%)

HEC HS300 240-360 240-360
HEC HS6000 4800-7200  
HEC HS30000 24000-36000 1500-2500
HEC HS60000 48000-72000 2400-3600
HEC HS100000 80000-120000 4000-6000
HEC HS150000 120000-180000 7000mins

 

Cmathata a HEC

1.Ho teteana

HEC ke setenya se loketseng bakeng sa litlolo le litlolo.Lits'ebetsong tse sebetsang, ho kopanya ho teteaneng le ho emisoa, polokeho, dispersibility, le ho boloka metsi ho tla hlahisa litholoana tse ntle haholoanyane.

2.Pseudoplasticity

Pseudoplasticity e bua ka thepa eo viscosity ea tharollo e fokotsehang ka ho eketseha ha lebelo.Pente ea latex e nang le HEC e bonolo ho e sebelisa ka li-brushes kapa li-rollers 'me e ka eketsa boreleli holim'a metsi, e ka boela ea eketsa katleho ea mosebetsi;Li-shampoo tse nang le HEC li na le metsi a matle 'me li na le viscous haholo, li bonolo ho hlapolla,' me li hasana habonolo.

3.Mamello ea letsoai

HEC e tsitsitse haholo litharollong tsa letsoai tse phahameng haholo 'me e ke ke ea bola ka boemo ba ionic.E sebelisoa ho electroplating, bokaholimo ba likarolo tse pentiloeng bo ka ba bo phethahetseng le bo khanyang haholoanyane.Ntho e hlokomelehang le ho feta ke hore e ntse e na le viscosity e ntle ha e sebelisoa ka pente ea latex e nang le borate, silicate le carbonate.

4.Ho etsa lifilimi

Thepa ea ho etsa lifilimi ea HEC e ka sebelisoa liindastering tse ngata.Mesebetsing ea ho etsa pampiri, ho roala ka moemeli oa glazing o nang le HEC ho ka thibela ho kenella ha mafura, 'me ho ka sebelisoa ho lokisetsa tharollo bakeng sa likarolo tse ling tsa tlhahiso ea pampiri;ts'ebetsong ea ho ohla, HEC e ka eketsa elasticity ea likhoele le ho fokotsa tšenyo ea mochini ho tsona.Ha ho etsoa boholo, ho daea le ho qeta mokhoa oa lesela, HEC e ka sebetsa e le filimi ea nakoana e sireletsang.Ha tšireletso ea eona e sa hlokehe, e ka hlatsuoa ho tloha fiber ka metsi.

5.Ho boloka metsi

HEC e thusa ho boloka mongobo oa tsamaiso o le boemong bo loketseng.Hobane palo e nyenyane ea HEC ka tharollo ea metsi e ka fumana phello e ntle ea ho boloka metsi, e le hore tsamaiso e fokotse tlhokahalo ea metsi nakong ea ho kopanya.Ntle le ho boloka metsi le ho khomarela, seretse sa samente se tla fokotsa matla le ho momahana ha sona, 'me letsopa le lona le tla fokotsa polasetiki ea lona tlas'a khatello e itseng.

 

Lisebelisoa

1.Pente ea latex

Hydroxyethyl cellulose ke setenya se sebelisoang haholo liphahlong tsa latex.Ntle le ho tiisa liphahlo tsa latex, e ka boela ea emulsify, ea qhalakanya, ea tsitsisa le ho boloka metsi.E khetholloa ke phello e kholo ea ho teteka, nts'etsopele e ntle ea mebala, thepa ea ho etsa lifilimi le botsitso ba polokelo.Hydroxyethyl cellulose ke ntho e tsoang ho selulose e seng ea ionic 'me e ka sebelisoa ka mefuta e mengata ea pH.E na le tumellano e ntle le lisebelisoa tse ling tse ka har'a motsoako (joalo ka li-pigments, li-additives, li-fillers le letsoai).Liaparo tse teteaneng ka hydroxyethyl cellulose li na le rheology e ntle le pseudoplasticity ka litekanyetso tse fapaneng tsa ho kuta.Mekhoa ea kaho e kang ho phunya, ho roala rolara le ho fafatsa ho ka amoheloa.Kaho e ntle, ha ho bonolo ho rotha, ho thella le ho fafatsa, 'me thepa ea ho lekanya le eona e ntle.

2.Polymerization

Hydroxyethyl cellulose e na le mesebetsi ea ho hasanya, emulsifying, ho emisa le ho tsitsisa karolong ea polymerization kapa copolymerization ea resin ea maiketsetso, 'me e ka sebelisoa e le colloid e sireletsang.E khetholloa ke bokhoni bo matla ba ho qhalakanngoa, sehlahisoa se hlahisoang se na le "filimi" e nyenyane haholo, boholo bo botle ba likaroloana, sebōpeho sa likaroloana tse ts'oanang, sebopeho se hlephileng, metsi a mangata, pepeneneng ea lihlahisoa tse phahameng, le ho sebetsa habonolo.Kaha selulose ea hydroxyethyl e ka qhibiliha ka metsing a batang le metsing a chesang 'me ha e na mocheso oa mocheso oa gelation, e loketse haholoanyane karabelo e fapaneng ea polymerization.

Lintho tsa bohlokoa tsa 'mele tsa dispersant ke tsitsipano ea holim'a (kapa sefahleho), matla a sefahleho le mocheso oa gelation oa tharollo ea eona ea metsi.Lintho tsena tsa hydroxyethyl cellulose li loketse polymerization kapa copolymerization ea li-resin tsa maiketsetso.

Hydroxyethyl cellulose e lumellana hantle le tse ling tse qhibilihang ka metsing cellulose ethers le PVA.Sistimi e kopaneng e entsoeng ke sena e ka fumana phello e felletseng ea ho tlatsana mefokolo ea e mong.Sehlahisoa sa resin se entsoeng ka mor'a ho kopanya ha se na boleng bo botle feela, empa se boetse se fokotsa tahlehelo ea thepa.

3.Ho cheka oli

Ha ho cheka oli le tlhahisong, hydroxyethyl cellulose e nang le viscosity e phahameng e sebelisoa haholo-holo joalo ka viscosifier bakeng sa ho tlatsa maro le maro a ho qetela.Low-viscosity hydroxyethyl cellulose e sebelisoa e le sesebelisoa sa tahlehelo ea mokelikeli.Har'a liretse tse fapa-fapaneng tse hlokahalang bakeng sa ho cheka, ho phethoa, ho etsa samente le ho senya, hydroxyethyl cellulose e sebelisoa e le motenya ho fumana metsi a matle le botsitso ba seretse.Nakong ea ho cheka, matla a ho jara seretse a ka ntlafatsoa, ​​'me bophelo ba tšebeletso ea mochine oa ho phunya bo ka lelefatsoa.Mekelikeli ea ho qetela e tiileng e tlaase le maro a samente, ts'ebetso e babatsehang ea ho fokotsa tahlehelo ea mokelikeli oa hydroxyethyl cellulose e ka thibela metsi a mangata ho kena lera la oli ho tloha seretseng le ho ntlafatsa bokhoni ba tlhahiso ea lera la oli.

4.Daily indasteri ea lik'hemik'hale

Hydroxyethyl cellulose ke filimi e sebetsang hantle ea pele, binder, thickener, stabilizer le dispersant ka li-shampoo, li-sprays tsa moriri, li-neutralizers, li-conditioner tsa moriri le litlolo;ka har'a li-detergent powders Bohareng ke ntho e bolokang litšila.Hydroxyethyl cellulose e qhibiliha ka potlako mocheso o phahameng, o ka potlakisang ts'ebetso ea tlhahiso le ho ntlafatsa katleho ea tlhahiso.Ntho e totobetseng ea li-detergents tse nang le hydroxyethyl cellulose ke hore e ka ntlafatsa boreleli le mercerization ea masela.

5 Kaho

Hydroxyethyl cellulose e ka sebelisoa lihlahisoa tsa kaho tse kang metsoako ea konkreite, seretse se sa tsoa tsoakoa, samente ea gypsum kapa seretse se seng, joalo-joalo, ho boloka metsi nakong ea ts'ebetso ea kaho pele e beha le ho thatafala.Ntle le ho ntlafatsa ho boloka metsi a lihlahisoa tsa mohaho, hydroxyethyl cellulose e ka boela ea eketsa khalemelo le nako e bulehileng ea samente kapa samente.E ka fokotsa letlalo, ho thella le ho thella.Sena se ka ntlafatsa ts'ebetso ea kaho, sa eketsa katleho ea mosebetsi, sa boloka nako, 'me ka nako e ts'oanang sa eketsa sekhahla sa ho eketsa bokhoni ba seretse, ka tsela eo, ho boloka thepa e tala.

6 Temo

Hydroxyethyl cellulose e sebelisoa ho emulsion ea chefo e bolaeang likokoanyana le ho emisoa, e le motenya bakeng sa li-emulsions tsa spray kapa suspensions.E ka fokotsa ho hoholeha ha moriana 'me ea etsa hore e khomarele ka thata holim'a lekhasi la semela, kahoo e eketsa ts'ebeliso ea ho fafatsa ka foliar.Hydroxyethyl cellulose e ka boela ea sebelisoa e le moemeli oa ho etsa filimi bakeng sa ho roala peō;joalo ka setlamo le se etsang filimi bakeng sa ho sebelisa mahlaku a koae.

7 Pampiri le enke

Hydroxyethyl cellulose e ka sebelisoa e le sesebelisoa sa boholo pampiring le khateboto, hammoho le ntho e tenya le e emisang bakeng sa li-inks tse thehiloeng metsing.Ts'ebetsong ea ho etsa pampiri, thepa e phahameng ea hydroxyethyl cellulose e kenyelletsa ho lumellana le marenene a mangata, li-resin le matsoai a sa tloaelehang, foam e tlaase, tšebeliso e tlaase ea oksijene le bokhoni ba ho etsa filimi e boreleli ea holim'a metsi.Filimi e na le "permeability" e tlase le gloss e matla, hape e ka fokotsa litšenyehelo.Pampiri e khomaretsoeng ka hydroxyethyl cellulose e ka sebelisoa bakeng sa ho hatisa litšoantšo tsa boleng bo holimo.Ha ho etsoa enke e entsoeng ka metsi, enke e thehiloeng metsing e teteaneng ka hydroxyethyl cellulose e omella kapele, e na le mebala e metle e fapaneng, 'me ha e bake ho khomarela.

8 lesela

E ka sebelisoa e le sekontiri se tlamang le sa sizeng ho hatisa lesela le ho daea sizing le ho roala ka latex;motenya bakeng sa boholo ba lintho tse ka morao ho k'hapete.Ka fiber ea khalase, e ka sebelisoa e le moemeli oa ho etsa le sekhomaretsi;ka seretse sa letlalo, se ka sebelisoa e le sekhomaretsi le sekhomaretsi.Fana ka mefuta e mengata ea li-viscosity bakeng sa liphahlo tsena kapa li-adhesives, ho etsa hore seaparo se ts'oane le ho khomarela ka potlako, 'me se ka ntlafatsa ho hlaka ha khatiso le ho daea.

9 Li-ceramics

E ka sebelisoa ho etsa li-adhesives tse matla haholo bakeng sa li-ceramics.

10. sesepa sa meno

E ka sebelisoa e le motenya ha ho etsoa sesepa sa meno.

 

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Nako ea poso: Nov-26-2023
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