Cov Khoom Siv thiab Kev Ceev Fwm Ntawm Hydroxyethyl Cellulose

Hydroxyethyl cellulose (HEC) yog xim daj lossis lub teeb tsis zoo, cov tshuaj tsw qab, uas tau npaj los ntawm kev tawm tsam ntawm lub ntsej muag ntawm cov tshuaj tsw qab ntawm alkaline (lossis cov tshuaj ethylene eporohydin). Noism soluble cellulose neeg hais txog. Ntxiv nrog rau thickening, kev ncua, khi, ua yeeb yaj kiab, ua yeeb yaj kiab, dej-khaws cia, nws muaj cov khoom tiv thaiv, nws muaj cov khoom siv hauv qab no:

1. HEC yog soluble hauv dej kub lossis dej txias lossis npau npau yam tsis muaj nag dej, yog li nws muaj ntau yam ntawm solubility, thiab tsis-thermal gelation;

2. Nws yog tsis-ionic thiab tuaj yeem ua ke nrog ntau yam ntawm lwm cov dej-soluble polymers, solfactants, thiab ntsev. Nws yog ib qho zoo tshaj plaws colloidal thickener rau cov kev daws teeb meem elevelfolyte;

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4. Piv nrog lees paub methyl cellulose thiab hydroxypropal methylropy, lub dispersing muaj peev xwm ntawm hac yog qhov phem tshaj, tab sis kev tiv thaiv kev tiv thaiv kev muaj peev xwm yog qhov muaj zog tshaj. Vim nws cov khoom zoo ntawm thickening, kev tshaj tawm, kev tsim kho, kev tiv thaiv, ntaub ntawv, ntawv thiab polymer polymnerization thiab lwm thaj teb.

Cov kev ceev faj:

Txij li thaum lub ntsej muag zoo hydroxyethyl cellulose yog hmoov los yog cellulose khoom, nws yog qhov yooj yim los tswj thiab yaj nws nyob rau hauv cov khoom hauv qab no yog them sai sai rau. tus

1. Ua ntej thiab tom qab ntxiv hydroxyethyl cellulose, nws yuav tsum tau ua kom tiav mus kom txog thaum cov tshuaj tau muab cov pob tshab thiab meej. tus

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3. Dej kub thiab pH tus nqi hauv dej muaj cov kev sib raug zoo pom tseeb rau cov kev sib cais ntawm cov cellulose ntawm hydrothethyl cellulose, yog li tshwj xeeb saib yuav tsum tau them nyiaj. tus

4. Tsis txhob ntxiv qee cov tshuaj alkaline rau cov sib tov ua ntej cov hmoov hydrothethyl cellulose hmoov yog ua kom sov los ntawm cov dej. Tsa tus nqi pH tom qab ua kom sov yuav pab yaj. tus

5. Raws li deb tau, ntxiv tshuaj tiv thaiv fungal thaum ntxov li sai tau. tus

6. Thaum siv cov siab-viscosity hydrotyl cellulose, lub concentration ntawm niam cawv yuav tsum tsis txhob siab dua 2.5-3%, txwv tsis pub tus niam cawv yuav nyuaj rau lis. Cov post-kho hydulose feem ntau tsis yooj yim los ua cov leeps lossis spheres, tsis yog nws ua insoluble kheej kheej kheej tom qab ntxiv dej.