Focus on Cellulose ethers

Menene kaddarorin methylcellulose?

1. Ana iya narke lokacin da zafi sama da 200 ° C, kuma abun cikin ash yana kusan 0.5% lokacin da aka ƙone, kuma yana da tsaka tsaki bayan an yi shi da ruwa. Amma game da danko, ya dogara da matakin polymerization.

2. Solubility a cikin ruwa ya bambanta da zafin jiki, yawan zafin jiki yana da ƙananan solubility, ƙananan zafin jiki yana da babban solubility.

3. Soluble a cikin cakuda ruwa da kwayoyin kaushi irin su methanol, ethanol, ethylene glycol, glycerin da acetone.

4. Lokacin da gishirin ƙarfe ko Organic electrolyte ya kasance a cikin maganin ruwa mai ruwa, maganin zai iya zama barga. Lokacin da aka ƙara electrolyte a cikin adadi mai yawa, gel ko hazo zai bayyana.

5. Ayyukan saman. Kwayoyinsa sun ƙunshi ƙungiyoyin hydrophilic da ƙungiyoyin hydrophobic, waɗanda ke da emulsification, kariya ta colloid da kwanciyar hankali lokaci.

6. Thermal gelation. Lokacin da maganin ruwa ya tashi zuwa wani yanayin zafi (sama da zazzabi na gel), zai zama gajimare har sai ya yi laushi ko kuma ya zubar, yana sa maganin ya rasa danko, amma yana iya komawa zuwa yanayinsa ta hanyar sanyaya. Yanayin zafin jiki wanda gelation da hazo ke faruwa ya dogara da nau'in samfurin, ƙaddamar da bayani da kuma yawan dumama.

7. Ƙimar pH ta kasance barga. Dankowar da ke cikin ruwa ba shi da sauki ta hanyar acid da alkali. Bayan an ƙara wani adadin alkali, komai yawan zafin jiki ko ƙarancin zafin jiki, ba zai haifar da lalacewa ko tsagewar sarƙoƙi ba.

8. Maganin zai iya samar da fim mai haske, mai wuyar gaske da na roba a saman bayan bushewa. Yana iya tsayayya da kaushi na halitta, mai da mai daban-daban. Ba zai zama rawaya ba lokacin da aka fallasa shi ga haske, kuma ba zai bayyana fashe mai gashi ba. Ana iya sake narkar da shi cikin ruwa. Idan an ƙara formaldehyde a cikin maganin ko bayan an yi masa magani tare da formaldehyde, fim ɗin ba zai iya narkewa a cikin ruwa amma har yanzu yana kumbura.

9. Kauri. Yana iya kauri ruwa da tsarin marasa ruwa, kuma yana da kyakkyawan aikin rigakafin sag.

10. Ƙara danko. Maganin sa na ruwa yana da ƙarfin haɗin gwiwa mai ƙarfi, wanda zai iya inganta ƙarfin haɗin gwiwa na siminti, gypsum, fenti, pigment, fuskar bangon waya da sauran kayan.

11. Al'amarin da aka dakatar. Ana iya amfani da shi don sarrafa coagulation da hazo na m barbashi.

12. Colloid mai kariya don ƙara kwanciyar hankali. Yana iya hana tari da coagulation na droplets da pigments, da kuma yadda ya kamata hana hazo.


Lokacin aikawa: Janairu-29-2023
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