Hydroxyethyl cellulose ndi ethyl cellulose

Hydroxyethyl cellulose ndi ethyl cellulose ndi zinthu ziwiri zosiyana. Zili ndi makhalidwe awa.

Hydroxyethyl cellulose

Monga chinthu chopanda ma ionic surfactant, kuwonjezera pa kukhuthala, kuyimitsa, kumangirira, kuyandama, kupanga filimu, kufalitsa, kusunga madzi ndikupereka ma colloid oteteza, ilinso ndi zinthu zotsatirazi:

1. HEC imasungunuka m'madzi otentha kapena ozizira, ndipo siigwa kwambiri kutentha kwambiri kapena kuwira, kotero kuti imakhala ndi mitundu yosiyanasiyana ya kusungunuka ndi kukhuthala, komanso gelation yosatentha;

2. Chosagwiritsa ntchito ma ionic chokha chingathe kukhala pamodzi ndi ma polima ena ambiri osungunuka m'madzi, ma surfactants ndi mchere, ndipo ndi chokhuthala chabwino kwambiri cha colloidal chokhala ndi mayankho a electrolyte okhala ndi mphamvu zambiri;

3. Mphamvu yosungira madzi ndi yowirikiza kawiri kuposa ya methyl cellulose, ndipo ili ndi kayendedwe kabwino ka madzi;

4. Poyerekeza ndi methyl cellulose yodziwika bwino ndi hydroxypropyl methyl cellulose, mphamvu yobalalitsira ya HEC ndiyo yoyipa kwambiri, koma colloid yoteteza ili ndi mphamvu yamphamvu kwambiri.

Ethyl cellulose

Ndi ether ya cellulose yosakhala ionic yomwe siisungunuka m'madzi koma imasungunuka mu organic solvents. Ili ndi makhalidwe awa:

1. Sizosavuta kuyaka.

2. Kukhazikika kwa kutentha bwino komanso kutentha kwambiri.

3. Palibe kusintha kwa mtundu ku dzuwa.

4. Kusinthasintha kwabwino.

5. Kapangidwe kabwino ka dielectric.

6. Ili ndi kukana kwabwino kwa alkali komanso kukana asidi wofooka.

7. Ntchito yabwino yoletsa ukalamba.

8. Kukana bwino mchere, kuzizira komanso kuyamwa chinyezi.

9. Yokhazikika ku mankhwala, yosungidwa kwa nthawi yayitali popanda kuwonongeka.

10. Imagwirizana ndi ma resin ambiri ndipo imagwirizana bwino ndi ma plasticizer onse.

11. N'zosavuta kusintha mtundu pansi pa malo amphamvu amchere komanso kutentha.