Hydroxyethyl cellulose cov khoom lag luam thiab kev ceev faj

Hydroxyethyl cellulose (HEC) yog daj lossis lub teeb daj, tsis muaj ntxhiab tsw zoo los ntawm lub cellulous lossis powlene ntawm cellulose thiab ethylene oxide (lossis chlorohydrin). Noism soluble cellulose neeg hais txog. Ntxiv rau thickening, ncua, khi, flotation, zaj duab xis-khaws, dej-khaws cia, nws muaj cov khoom tiv thaiv kab mob hauv qab no:

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

2. Lub ionic nws tus kheej muaj peev xwm sib xyaw nrog ntau yam dej polymers, solfactants thiab ntsev zoo heev uas muaj cov kev daws teeb meem electrolyte.

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4. Piv nrog lees paub methyl cellulose thiab hydroxypropyl cellulose, lub zog impersing ntawm HEC yog qhov phem tshaj, tab sis kev tiv thaiv kev tiv thaiv muaj zog tshaj. Vim tias HEC muaj cov khoom zoo ntawm thickening, kev tshaj tawm, kev tsim kho, kev tsim kho thiab muab cov khoom siv tshuaj tiv thaiv thiab khoom noj thiab polymer polymnerization thiab lwm daim 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 tuav thiab yaj hauv dej ntev li ntev tau sau tseg.

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.

2. Nws yuav tsum yog sieved rau hauv kev sib xyaw me ntsis maj mam ntxiv, thiab tsis ncaj qha rau cov kab mob hydroxyethyl uas tau tsim rau hauv cov lumps thiab cov pob mus rau hauv cov kev sib xyaw.

3. Cov dej kub thiab tus nqi ntawm cov dej muaj qhov pom tseeb nrog kev sib txawv ntawm hydroxyethyl cellulose, yog li tshwj xeeb saib yuav tsum tau them rau nws.

4. Tsis txhob ntxiv qee cov tshuaj alkaline rau qhov sib xyaw ua ntej cov hmoov hydroxyethyl hmoov yog ua kom sov los ntawm cov dej. Tsa tus nqi PH tom qab ua kom sov yog pab tau rau kev sib txawv.

5. Raws li deb tau, ntxiv cov tshuaj tiv thaiv kab mob ntxov li ntxov tau.

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 hydrothethyl cellulose feem ntau tsis yooj yim los ua cov lumps lossis spheres, thiab nws yuav tsis tsim insoluble kheej kheej kheej tom qab ntxiv dej.