Focus on Cellulose ethers

Koj ua li cas rau HEC?

Hydroxye ether (HEC) yog cov dej tsis-ionic-soluble polymer muab tau los ntawm cellulose.Nws feem ntau yog siv rau ntau yam lag luam, xws li tshuaj, tshuaj pleev ib ce thiab khoom noj khoom haus, ua cov thickening thiab gel agents.Kev daws HEC yog txheej txheem ncaj qha, tab sis nws yuav tsum xav txog yam xws li kub, pH thiab nplawm.

Qhov profile:
Hydroxye ethyl cellulose (HEC) yog ib qho cellulose derivative uas yog synthesized los ntawm cov tshuaj tiv thaiv oxide.Cov tshuaj tiv thaiv qhia cov pab pawg hydroxyl mus rau hauv cov saw tseem ceeb ntawm cellulose, yog li muab cov polymer rau cov dej-soluble.HEC yog tus cwj pwm los ntawm lub peev xwm los tsim cov pob tshab thiab ruaj khov gel hauv cov tshuaj aquare, ua rau nws muaj ntau yam khoom siv ntawm ntau daim ntawv thov.

Cov yam ntxwv cuam tshuam rau HEC kev sib cais:

1. Kub:
HEC dissolution dependency kub.Qhov kub siab dua feem ntau ua rau kom tawg sai dua.
Cov dej sov feem ntau yog siv los txhawb cov txheej txheem solubility.Txawm li cas los xij, qhov kub thiab txias yuav tsum tau zam kom tsis txhob degradation.

2. PH qib:
HEC ruaj khov nyob rau hauv qhov dav pH, feem ntau yog nyob nruab nrab ntawm 2 thiab 12. Kev kho qhov pH tus nqi ntawm cov tshuaj yuav cuam tshuam rau qhov kev sib cais.
Qhov zoo tshaj plaws dissolution feem ntau yog thawj qhov kev xaiv los ua ib qho me ntsis alkaline pH mob.

3. do:
Do los yog do kom txhim khu kev sib cais ntawm HEC.Cov mos sib xyaw pab cov polymer sib npaug hauv cov kuab tshuaj sib npaug kom tiv thaiv cov blocks.
Cov neeg kho tshuab nplawm lossis siv cov khoom sib nqus sib nqus yog muaj nyob rau hauv ib puag ncig hauv chav kuaj.

4. Kev xaiv cov kuab tshuaj:
HEC yog soluble hauv dej los tsim cov tshuaj ntshiab.Kev xaiv cov dej zoo (distillation, exfoliating) tuaj yeem cuam tshuam rau kev tawg.
Kev zam impurities hauv cov kuab tshuaj yog qhov tseem ceeb los tiv thaiv kev tsis zoo.

Txoj kev ntawm dissolving HEC:

1. Dissolt cov dej kub:
Tshav kub cov dej kom kub siab tshaj qhov kub ntawm chav tsev, tab sis qis dua qhov degradation kub ntawm HEC.
Tsis tu ncua do HEC maj mam ntxiv rau cov dej kom tsis txhob muaj cov blocks.
Khaws qhov kub kom txog thaum nws yaj tag.

2. Dej txias dissolves:
Txawm hais tias nws qeeb dua li dej kub, dej txias tseem tuaj yeem yaj HEC zoo.
Maj mam ntxiv HEC rau dej txias thiab sib tov sib xyaw.
Sib txawv thiab yaj lub sijhawm txaus rau cov polymers.

3. Kev hloov kho PH:
Raws li daim ntawv thov, pH ntawm cov dej yog siv los kho cov pH ntawm cov dej mus rau qhov xav tau.
Saib xyuas tus nqi pH hloov thaum lub caij so kom ruaj khov.

4. Stiring technology:
Siv cov tshuab nplawm, sib nqus nplawm, lossis sib xyaw me me rau lwm cov ntaub ntawv los pab HEC tawg.
Txuas ntxiv stirring kom txog thaum lub tov yog txawm.

5. Kev sib xyaw ua ke:
Kev sib xyaw ua ke ntawm cov cua sov, kev hloov pauv pH thiab nplawm yog siv los ua kom zoo rau kev tawg.
Cov kev sib txawv ntawm qhov kev sim kom ua tiav qhov xav tau kev sib cais.

kev daws teeb meem:

1. Thaiv:
Yog tias qhov thaiv tshwm sim, thov txo qhov nce hauv cov kuab tshuaj thiab ua kom lub zog ntawm HEC.
Manually decompose tej pab pawg neeg thaiv, los yog kho cov stirring ceev.

2. Tsis txaus dissolution:
Yog tias cov polymer tsis yaj tag, xyuas cov impurities hauv cov kuab tshuaj los yog tsis txaus stirring.
Xav txog kev kho qhov kub thiab txias los yog siv cov txheej txheem solubility sib txawv.

Solubbing HEC suav nrog ntau yam, suav nrog qhov kub thiab txias, pH, thiab nplawm.Kev nkag siab txog cov yam ntxwv ntawm HEC thiab cov kev cai tshwj xeeb ntawm cov ntawv thov yog qhov tseem ceeb kom ua tiav qhov kev sib cais zoo tshaj plaws.Kev sim thiab kev saib xyuas kom zoo yuav pab daws txhua yam teeb meem tshwm sim.Ib txwm ua raws li cov lus qhia txog kev ruaj ntseg thiab sab laj nrog cov ntaub ntawv qhia txog kev ua kom tau txais cov lus qhia tshwj xeeb muab los ntawm cov chaw tsim khoom.


Post lub sij hawm: Dec-25-2023
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