Tsom ntsoov rau Cellulose ethers

Txoj kev sib cais thiab kev siv tseem ceeb ntawm ethylcellulose

Ethylcellulose yog ib qho khoom siv ntau yam polymer muab los ntawm cellulose los ntawm kev qhia ntawm ethyl pawg. Qhov kev hloov kho no muab cov khoom siv polymer tshwj xeeb, ua rau nws tsim nyog rau ntau yam kev lag luam. Ib qho tseem ceeb ntawm kev siv ethylcellulose nyob rau hauv ntau qhov chaw yog nkag siab txog nws tus cwj pwm dissolution vim nws cuam tshuam rau nws cov kev ua thiab kev siv.

Txoj kev Dissolution ntawm ethylcellulose:

Solubility khoom:

Vim lub hydrophobic xwm ntawm ethyl hloov, ethylcellulose yog me ntsis soluble hauv dej. Txawm li cas los xij, nws nthuav tawm solubility nyob rau hauv ntau yam ntawm cov organic solvents, ua rau nws tshwj xeeb tshaj yog haum rau cov kev siv uas dej kuj tseem ceeb heev. Cov kuab tshuaj nquag rau ethylcellulose muaj xws li ethanol, ethyl acetate, methylene chloride, thiab toluene. Cov txheej txheem dissolution cuam tshuam nrog kev rhuav tshem cov rog hauv lub cev hauv cov polymer, tso cai rau cov kuab tshuaj nkag mus rau hauv cov khoom siv polymer.

Cov yam ntxwv cuam tshuam rau kev tawg:

Ntau yam cuam tshuam rau kev tawg ntawm ethylcellulose:

Kev xaiv cov kuab tshuaj: Kev xaiv cov kuab tshuaj ua lub luag haujlwm tseem ceeb hauv cov txheej txheem soluble. Cov kuab tshuaj uas muaj kev sib raug zoo rau ethylcellulose, xws li ethyl acetate, yuav ua kom nrawm nrawm.

Kub: Qhov kub thiab txias feem ntau ua rau kom muaj kev sib cais vim nws muab lub zog ntxiv rau kev sib cuam tshuam ntawm polymer-solvent. Txawm li cas los xij, qhov kub ntau dhau tuaj yeem ua rau degradation.

Polymer particle loj: me me particle loj muab thaj tsam loj dua rau cov kuab tshuaj sib cuam tshuam, ua rau kom tawg sai dua. Kev sib tsoo tsim nyog los yog cov txheej txheem txo qhov me me tuaj yeem siv los ua kom zoo rau kev sib cais.

Qib Polymer: Qib ntawm ethylcellulose yog txiav txim siab los ntawm cov ntsiab lus ethoxy thiab molecular hnyav, uas cuam tshuam rau nws cov solubility. Cov ntsiab lus ethoxy siab dua feem ntau nce solubility.

stirring los yog agitation: Mechanical stirring los yog agitation pab txhawb kev nkag mus rau cov kuab tshuaj mus rau hauv lub polymer matrix thiab accelerates tus txheej txheem dissolution.

Feem ntau siv cov txheej txheem dissolution:
Muaj ntau txoj hauv kev tuaj yeem siv los ua kom yaj ethylcellulose:

Kev sib xyaw ua ke: Qhov no suav nrog kev sib xyaw ethylcellulose nrog cov kuab tshuaj tsim nyog thiab nplawm cov sib tov kom txog thaum yaj tag. Txoj kev no feem ntau yog siv rau hauv chav kuaj.

Txau txheej: Hauv cov ntawv thov kev lag luam, cov tshuaj ethylcellulose feem ntau tau npaj rau txheej txheej txheej txheej. Cov kuab tshuaj evaporates, tawm hauv nyias zaj duab xis ntawm ethylcellulose ntawm lub substrate.

Kub yaj extrusion: Cov txheej txheem no suav nrog cua kub sib xyaw ntawm ethylcellulose thiab lwm yam khoom siv rau lub xeev molten thiab tom qab ntawd extruding nws los ntawm kev tuag. Tom qab txias, ethylcellulose solidifies.

Kev nkag siab txog cov yam ntxwv ntawm kev sib cais thiab cov txheej txheem yog qhov tseem ceeb rau kev txiav ethylcellulose rau cov ntawv thov tshwj xeeb.

Kev siv tseem ceeb ntawm ethyl cellulose:

Pharmaceutical kev lag luam:

Tablet Txheej: Ethylcellulose yog dav siv los ua cov khoom siv txheej rau cov ntsiav tshuaj los muab kev tswj hwm kev tso tawm thiab tiv thaiv cov khoom siv tshuaj.
Microencapsulation: Nws yog microencapsulation tshuab siv hauv kev xa tshuaj los tiv thaiv cov tshuaj los ntawm ib puag ncig yam.

kev lag luam zaub mov:

Edible Coatings: Ethylcellulose yog siv los ua cov txheej txheem ntawm cov txiv hmab txiv ntoo thiab zaub kom ntev lawv lub txee lub neej thiab tswj xyuas qhov tshiab.

Paints thiab Coatings:

Inks thiab Coatings: Ethylcellulose yog ib yam khoom muaj nyob rau hauv inks thiab coatings, muab zaj duab xis-forming zog thiab txhim kho formulation stability.

Kev lag luam yas:

Polymer Additive: Nws yog siv los ua cov khoom siv ntxiv hauv cov yas los txhim kho lawv cov yam ntxwv ua haujlwm, ua kom yooj yim thiab tawv.

Adhesive:

Kub Melt Adhesives: Ethylcellulose yog siv rau hauv kev tsim cov nplaum kub yaj los pab txhim kho lawv cov nplaum thiab cohesive.

Textile kev lag luam:

Textile Sizing: Hauv kev ua textile, ethylcellulose yog siv rau hauv sizing los muab kev tiv thaiv txheej rau cov fibers thiab ua kom lawv lub zog.

khoom siv hluav taws xob:

Cov khoom siv photovoltaic: Vim nws cov yeeb yaj kiab tsim thiab dielectric zog, ethylcellulose tuaj yeem siv los ua cov yeeb yaj kiab nyias rau cov khoom siv hluav taws xob, suav nrog lub hnub ci.

Cov khoom siv tu tus kheej:

Cosmetic formulations: Nws yog siv los ua cov thickener thiab stabilizer hauv cov tshuaj pleev ib ce xws li cream thiab tshuaj pleev ib ce.

3D luam ntawv:

Binders hauv 3D luam ntawv: Ethylcellulose tuaj yeem siv los ua cov ntaub ntawv hauv 3D luam ntawv txheej txheem, pab tswj cov txheej txheem kev ncaj ncees ntawm cov khoom luam tawm.

Kev lag luam ntawv:

Daim ntawv txheej: Ethyl cellulose yog siv los ua cov ntawv txheej los txhim kho nws cov khoom nto, txhim kho kev luam tawm thiab muab dej tsis kam.

Ethylcellulose muaj kev siv ntau yam kev lag luam vim nws cov yam ntxwv solubility tshwj xeeb thiab cov khoom siv ntau yam. Txoj kev tawg yog ib qho tseem ceeb hauv kev paub txog lawv lub peev xwm, ua kom muaj kev daws teeb meem rau cov kev xav tau tshwj xeeb. Raws li kev tshawb fawb polymer txuas ntxiv mus, ethylcellulose tuaj yeem ua lub luag haujlwm tseem ceeb hauv ntau yam kev siv tshiab, pab txhawb rau kev txhim kho cov ntaub ntawv thiab cov khoom lag luam.


Post lub sij hawm: Jan-15-2024
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