Hydroxyethyl cellulose (HEC)yog ib tug dawb los yog lub teeb daj, tsis muaj ntxhiab, tsis muaj tshuaj lom fibrous los yog powdery khoom, uas yog npaj los ntawm etherification cov tshuaj tiv thaiv ntawm alkaline cellulose thiab ethylene oxide (los yog chlorohydrin). Nonionic soluble cellulose ethers. Ntxiv rau qhov thickening, suspending, binding, floating, film-forming, dispersing, water-retaining thiab muab kev tiv thaiv colloid, nws muaj cov khoom nram qab no:
1. HEC yog soluble nyob rau hauv dej kub los yog dej txias, kub kub los yog boiling tsis muaj nag lossis daus, yog li ntawd nws muaj ib tug ntau yam ntawm solubility thiab viscosity yam ntxwv, thiab non-thermal gelation;
2. Nws yog non-ionic thiab tuaj yeem ua ke nrog ntau yam ntawm lwm cov dej-soluble polymers, surfactants, thiab ntsev. Nws yog ib qho zoo heev colloidal thickener rau high-concentration electrolyte 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, tab sis lub peev xwm tiv thaiv colloid yog qhov muaj zog tshaj. Vim nws cov khoom zoo ntawm thickening, suspending, dispersing, emulsifying, adhering, film-forming, tiv thaiv ya raws thiab muab kev tiv thaiv colloid, HEC tau siv dav hauv kev tshawb nrhiav roj, coatings, kev tsim kho, tshuaj, khoom noj, textile, ntawv thiab polymer Polymerization. thiab lwm yam teb.
Cov kev ceev faj:
Txij li qhov chaw kho hydroxyethyl cellulose yog hmoov los yog cellulose khoom, nws yog ib qho yooj yim los lis thiab yaj nws nyob rau hauv dej tsuav yog cov khoom nram qab no tau them nyiaj mloog mus rau. tus
1. Ua ntej thiab tom qab ntxiv hydroxyethyl cellulose, nws yuav tsum tau nplawm tas li kom txog rau thaum cov tshuaj yog pob tshab thiab meej. tus
2. Nws yuav tsum tau maj mam sieved rau hauv lub tank tov, tsis txhob ncaj qha ntxiv ib tug loj npaum li cas ntawm hydroxyethyl cellulose los yog hydroxyethyl cellulose uas tau tsim lumps thiab pob rau hauv lub mixing tank. tus
3. Dej kub thiab PH tus nqi hauv dej muaj kev sib raug zoo rau kev sib cais ntawm hydroxyethyl cellulose, yog li yuav tsum tau them nyiaj tshwj xeeb. tus
4. Tsis txhob ntxiv qee cov tshuaj alkaline rau qhov sib tov ua ntej cov hmoov hydroxyethyl cellulose sov los ntawm dej. Nce tus nqi PH tom qab ua kom sov yuav pab yaj. tus
5. Raws li qhov ua tau, ntxiv cov tshuaj tiv thaiv kab mob kom ntxov li sai tau. tus
6. Thaum siv high-viscosity hydroxyethyl cellulose, qhov concentration ntawm niam cawv yuav tsum tsis txhob siab tshaj 2.5-3%, txwv tsis pub niam cawv yuav nyuaj. Tom qab kho hydroxyethyl cellulose feem ntau tsis yooj yim los tsim cov pob lossis spheres, thiab nws yuav tsis tsim cov khoom sib txuas tsis sib xws tom qab ntxiv dej.
Post lub sij hawm: Dec-27-2022