Focus on Cellulose ethers

Hydroxyethyl cellulose rau kev tu tawv nqaij

Hydroxyethyl cellulose (HEC) yog dawb los yog lub teeb daj, tsis muaj ntxhiab, tsis muaj tshuaj lom fiber ntau los yog hmoov hmoov npaj los ntawm etherification ntawm alkaline cellulose thiab ethylene oxide (los yog chlorohydrin). Nonionic soluble cellulose ethers. Vim HEC muaj cov khoom zoo xws li thickening, suspending, dispersing, emulsifying, bonding, film-forming, tiv thaiv ya raws thiab muab kev tiv thaiv colloids, nws tau siv dav hauv kev tu tawv nqaij, kev tshawb nrhiav roj, txheej, kev tsim kho, tshuaj thiab zaub mov, textiles, papermaking thiab polymers. Polymerization thiab lwm yam. 40 mesh sieving tus nqi ≥ 99%;

Cov yam ntxwv zoo: dawb mus rau lub teeb daj fibrous los yog hmoov khoom, tsis muaj tshuaj lom, tsis muaj ntxhiab, yooj yim soluble hauv dej. Insoluble nyob rau hauv cov organic solvents.

Hydroxyethyl cellulose

Nyob rau hauv qhov ntau ntawm PH tus nqi ntawm 2-12, viscosity hloov me me, tab sis lub viscosity txo qis tshaj qhov no. Nws muaj cov yam ntxwv ntawm thickening, suspending, bonding, emulsifying, dispersing, khaws noo noo thiab tiv thaiv colloid. Kev daws teeb meem ntawm qhov sib txawv viscosity tuaj yeem npaj tau. Nws yog tsis ruaj tsis khov nyob rau hauv ib txwm kub thiab siab, zam cov av noo, tshav kub thiab kub, thiab muaj exceptional zoo ntsev solubility rau dielectrics, thiab nws aqueous tov yog tso cai kom muaj siab concentrations ntawm ntsev thiab yog ruaj khov.

Cov khoom tseem ceeb: Raws li cov khoom tsis-ionic surfactant, hydroxyethyl cellulose muaj cov khoom nram qab no ntxiv rau thickening, suspending, binding, flotation, film-forming, dispersing, dej tuav thiab muab kev tiv thaiv colloids:

1. HEC yog soluble nyob rau hauv dej kub los yog txias, thiab tsis precipitate ntawm kub los yog boiling, ua rau nws muaj ib tug ntau yam ntawm solubility thiab viscosity yam ntxwv, thiab tsis-thermal gelation;

2. Nws yog non-ionic thiab tuaj yeem ua ke nrog ntau yam ntawm lwm cov dej-soluble polymers, surfactants thiab ntsev, thiab yog ib qho zoo heev colloidal thickener uas muaj cov ntsiab lus electrolyte;

3. Lub peev xwm tuav dej yog ob zaug siab dua li ntawm methyl cellulose, thiab nws muaj kev tswj xyuas zoo dua.

4. Piv nrog rau kev lees paub methyl cellulose thiab hydroxypropyl methyl cellulose, lub peev xwm dispersing ntawm HEC yog qhov phem tshaj plaws, tab sis kev tiv thaiv colloid muaj peev xwm muaj zog tshaj plaws.

Daim ntawv thov cheeb tsam folding
Siv ua nplaum, surfactant, colloid tiv thaiv tus neeg sawv cev, dispersant, emulsifier thiab dispersion stabilizer. Nws muaj ntau yam kev siv hauv txheej, inks, fibers, dyeing, papermaking, tshuaj pleev ib ce, tshuaj tua kab, ntxhia ua, roj extraction thiab tshuaj.

1. Feem ntau siv los ua thickening tus neeg saib xyuas, tiv thaiv tus neeg sawv cev, nplaum, stabilizer thiab additive rau kev npaj emulsion, gel, tshuaj pleev, tshuaj pleev ib ce, qhov muag clearing agent, suppository thiab ntsiav tshuaj, kuj siv raws li hydrophilic gel, skeleton cov ntaub ntawv, kev npaj ntawm skeleton sustained-tso npaj. , thiab tseem tuaj yeem siv los ua tus stabilizer hauv cov khoom noj.

2. Nws yog siv los ua sizing tus neeg sawv cev hauv kev lag luam textile, kev sib txuas, thickening, emulsifying, stabilizing thiab lwm yam auxiliaries hauv electronics thiab light industry sectors.

3. Siv ua thickener thiab filtrate reducer rau dej-raws li drilling kua thiab ua tiav kua, thiab muaj pom tseeb thickening nyhuv nyob rau hauv dej ntsev drilling kua. Nws kuj tseem tuaj yeem siv los ua tus neeg saib xyuas cov dej tsis zoo rau cov roj zoo cement. Nws tuaj yeem txuas nrog polyvalent hlau ions los ua gels.

4. Cov khoom no yog siv los ua dispersant rau dej-raws li gel fracturing kua, polystyrene thiab polyvinyl chloride nyob rau hauv cov roj fracturing ntau lawm. Nws kuj tuaj yeem siv los ua emulsion thickener hauv kev lag luam xim, av noo rhiab resistor hauv kev lag luam hluav taws xob, cement coagulation inhibitor thiab noo noo tuav tus neeg sawv cev hauv kev tsim kho kev lag luam. Glazing thiab tshuaj txhuam hniav adhesives rau kev lag luam ceramic. Nws kuj yog siv dav hauv kev luam ntawv thiab dyeing, textile, papermaking, tshuaj, tu cev, zaub mov, luam yeeb, tshuaj tua kab thiab tua hluav taws.

5. Siv los ua surfactant, colloid tiv thaiv tus neeg saib xyuas, emulsion stabilizer rau vinyl chloride, vinyl acetate thiab lwm yam emulsions, nrog rau latex tackifier, dispersant, dispersion stabilizer, thiab lwm yam. Siv dav hauv coatings, fibers, dyeing, tshuaj pleev ib ce, tshuaj tua kab, thiab lwm yam. Nws kuj muaj ntau yam kev siv roj extraction thiab machinery kev lag luam.

6. Hydroxyethyl cellulose muaj kev ua haujlwm saum npoo av, thickening, ncua, khi, emulsifying, zaj duab xis-forming, dispersing, dej tuav thiab muab kev tiv thaiv nyob rau hauv cov khoom siv tshuaj thiab kua npaj.

7. Nws yog siv los ua dispersant rau kev siv roj av-raws li gel fracturing kua, polyvinyl chloride thiab polystyrene. Nws tseem tuaj yeem siv los ua emulsion thickener hauv kev lag luam xim, cement coagulation inhibitor thiab noo noo tuav tus neeg saib xyuas hauv kev tsim kho, tus neeg saib xyuas glazing thiab tshuaj txhuam hniav nplaum hauv kev lag luam ceramic. Nws kuj yog siv dav hauv kev luam ntawv thiab dyeing, textile, papermaking, tshuaj, tu cev, zaub mov, luam yeeb thiab tshuaj tua kab thiab lwm yam kev lag luam.

Cov khoom ua haujlwm folding
1. HEC yog soluble nyob rau hauv dej kub los yog txias, thiab tsis precipitate ntawm kub los yog boiling, kom nws muaj ib tug ntau yam ntawm solubility thiab viscosity yam ntxwv, thiab tsis-thermal gelation;

2. Cov uas tsis yog-ionic nws tus kheej tuaj yeem ua ke nrog ntau yam ntawm lwm cov dej-soluble polymers, surfactants thiab ntsev, thiab yog ib qho zoo heev colloidal thickener uas muaj high-concentration dielectric daws;

3. Lub peev xwm tuav dej yog ob zaug siab dua li ntawm methyl cellulose, thiab nws muaj kev tswj xyuas zoo dua;

4. Piv nrog rau kev lees paub methyl cellulose thiab hydroxypropyl methyl cellulose, lub peev xwm dispersing ntawm HEC yog qhov phem tshaj plaws, tab sis kev tiv thaiv colloid muaj peev xwm muaj zog tshaj plaws.

Yuav ua li cas fold
Koom ncaj qha rau hauv kev tsim khoom

1. Ntxiv dej huv rau lub thoob loj uas nruab nrog lub tshuab ua haujlwm siab.

2. Pib nplawm tsis tu ncua ntawm qhov ceev thiab maj mam sieve cov hydroxyethyl cellulose rau hauv cov tshuaj sib npaug.

3. Txuas ntxiv stirring kom txog thaum tag nrho cov khoom yog soaked los ntawm.

4. Tom qab ntawd ntxiv cov tshuaj tua kab mob, alkaline additives xws li pigments, dispersing aids, dej ammonia.

5. Sib tov kom txog thaum tag nrho cov hydroxyethyl cellulose yog yaj tag (lub viscosity ntawm cov tshuaj nce ntau heev) ua ntej ntxiv lwm yam nyob rau hauv cov mis, thiab grind kom txog thaum cov khoom tiav.

Lub luag haujlwm ntawm hydroxyethyl cellulose hauv tshuaj lom neeg muaj pes tsawg leeg? Cov dej-soluble polymer tebchaw siv nyob rau hauv cov tshuaj pleev ib ce yog muab faib ua ob pawg: ntuj thiab hluavtaws.

Ntuj dej-soluble polymer tebchaw muaj xws li: hmoov txhuv nplej siab, cog cov pos hniav, tsiaj gelatin, thiab lwm yam, tab sis qhov zoo yog tsis ruaj khov, yooj yim cuam tshuam los ntawm huab cua, thaj chaw ib puag ncig, txwv tsis pub tawm, thiab yooj yim deteriorated los ntawm cov kab mob thiab pwm.

Synthetic dej-soluble polymer tebchaw muaj xws li polyvinyl cawv, polyvinylpyrrolidone, thiab lwm yam., uas muaj cov khoom ruaj khov, tsis tshua muaj tawv nqaij khaus thiab tus nqi qis, yog li lawv tau hloov cov dej-soluble polymer compounds thiab ua lub ntsiab ntawm cov khoom siv raw khoom colloid.

Nws tau muab faib ua semi-synthetic thiab hluavtaws dej-soluble polymer compounds.

Semi-synthetic dej-soluble polymer tebchaw feem ntau siv: methyl cellulose, ethyl cellulose, sodium carboxymethyl cellulose, hydroxyethyl cellulose, thiab guar gum thiab nws cov derivatives.

Synthetic water-soluble polymer compounds feem ntau yog siv: polyvinyl cawv, polyvinylpyrrolidone, acrylic acid polymer, thiab lwm yam.

Cov no yog siv rau hauv cov tshuaj pleev ib ce ua cov nplaum, thickeners, zaj duab xis qub, thiab emulsion stabilizers.


Lub sij hawm xa tuaj: Nov-11-2022
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