Hydroxyethyl cellulose

Hydroxyethyl cellulose (HEC) yog ib yam khoom dawb los yog daj daj, tsis muaj ntxhiab, tsis muaj tshuaj lom fibrous los yog hmoov khoom uas tau npaj los ntawm etherification ntawm alkaline cellulose thiab ethylene oxide (los yog chlorohydrin). Nonionic soluble cellulose ethers. Vim tias HEC muaj cov khoom zoo ntawm thickening, suspending, dispersing, emulsifying, bonding, film-forming, tiv thaiv noo noo thiab muab cov colloids tiv thaiv, nws tau siv dav hauv kev tshawb nrhiav roj, coatings, kev tsim kho, tshuaj thiab zaub mov, textiles, papermaking thiab polymers. Polymerization thiab lwm yam teb. Hydroxyethyl cellulose tsis ruaj khov ntawm qhov kub thiab txias ib txwm muaj, zam kev noo noo, cua sov, thiab kub siab, thiab muaj cov ntsev solubility zoo heev rau dielectrics. Nws cov kua dej tau tso cai kom muaj cov ntsev ntau thiab ruaj khov.

Cov Lus Qhia
Koom nrog ncaj qha rau hauv kev tsim khoom

1. Ntxiv dej huv rau hauv lub thoob loj uas muaj lub tshuab sib tov high-shear.

2. Pib do tas li ntawm qhov ceev qis thiab maj mam lim cov hydroxyethyl cellulose rau hauv cov tshuaj kom sib npaug.

3. Txuas ntxiv do kom txog thaum tag nrho cov khoom me me raug ntub tag.

4. Tom qab ntawd ntxiv cov tshuaj tua kab mob fungal, cov tshuaj alkaline xws li cov xim, cov khoom pab dispersing, thiab dej ammonia.

5. Do kom txog thaum tag nrho cov hydroxyethyl cellulose yaj tag (qhov viscosity ntawm cov tshuaj nce ntxiv ntau heev) ua ntej ntxiv lwm yam khoom rau hauv cov mis, thiab zom kom txog thaum cov khoom tiav.

Nruab nrog niam dej cawv

Txoj kev no yog ua ntej npaj cov dej cawv niam uas muaj qhov concentration siab dua, thiab tom qab ntawd ntxiv rau hauv cov xim latex. Qhov zoo ntawm txoj kev no yog tias nws muaj kev ywj pheej ntau dua thiab tuaj yeem ntxiv ncaj qha rau cov xim tiav, tab sis nws yuav tsum tau khaws cia kom zoo. Cov kauj ruam zoo ib yam li cov kauj ruam 1-4 hauv txoj kev 1, tsuas yog tias kev sib tov siab tsis tas yuav tsum yaj tag nrho rau hauv cov kua nplaum.

Siv kev ceev faj
Vim tias hydroxyethyl cellulose uas kho saum npoo yog hmoov lossis cellulose khov, nws yooj yim rau kev tuav thiab yaj hauv dej tsuav yog cov hauv qab no tau sau tseg.

1. Ua ntej thiab tom qab ntxiv hydroxyethyl cellulose, nws yuav tsum tau do tas li kom txog thaum cov tshuaj no pob tshab thiab meej.

2. Yuav tsum tau maj mam lim rau hauv lub thoob sib tov. Tsis txhob ntxiv cov hydroxyethyl cellulose uas tau ua pob lossis pob ncaj qha rau hauv lub thoob sib tov ntau ntau lossis ncaj qha.

3. Qhov kub ntawm dej thiab tus nqi pH ntawm dej muaj kev sib raug zoo nrog kev yaj ntawm hydroxyethyl cellulose, yog li yuav tsum tau saib xyuas tshwj xeeb rau nws.

4. Tsis txhob ntxiv qee yam alkaline rau hauv cov khoom sib tov ua ntej cov hmoov hydroxyethyl cellulose raug dej sov. Kev tsa tus nqi PH tom qab sov yog qhov pab tau rau kev yaj.

5. Yog tias ua tau, ntxiv cov tshuaj tua kab mob fungal sai li sai tau.

6. Thaum siv cov hydroxyethyl cellulose uas muaj viscosity siab, qhov concentration ntawm cov kua txiv hmab txiv ntoo yuav tsum tsis txhob siab tshaj 2.5-3%, txwv tsis pub cov kua txiv hmab txiv ntoo nyuaj rau kev ua haujlwm. Cov hydroxyethyl cellulose tom qab kho feem ntau tsis yooj yim los tsim cov pob lossis cov pob, thiab nws yuav tsis tsim cov colloids uas tsis yaj tom qab ntxiv dej.