1. Hydroxypropyl methyl cellulosesoluble hauv dej txias, dej kub yaj yuav ntsib teeb meem. Tab sis nws qhov kub thiab txias hauv dej kub yog siab dua li ntawm methyl cellulose. Lub solubility ntawm methyl cellulose nyob rau hauv dej txias kuj zoo heev.
2. Lub viscosity ntawm hydroxypropyl methyl cellulose muaj feem xyuam rau nws qhov hnyav molecular, thiab qhov hnyav molecular yog qhov viscosity ntau dua. Kub kuj yuav cuam tshuam rau nws viscosity, kub nce, viscosity txo. Txawm li cas los xij, qhov viscosity ntawm qhov kub siab yog qis dua li ntawm methyl cellulose. Cov tshuaj yog ruaj khov thaum khaws cia ntawm chav tsev kub.
3. Hydroxypropyl methyl cellulose yog ruaj khov rau cov kua qaub thiab alkali, thiab nws cov kua aqueous yog ruaj khov nyob rau hauv thaj tsam ntawm pH = 2 ~ 12. Caustic dej qab zib thiab txiv qaub dej tsis muaj txiaj ntsig zoo rau nws cov khoom, tab sis alkali tuaj yeem ua kom nws qhov kev sib cais thiab txhim kho cov viscosity ntawm tus pin. Hydroxypropyl methyl cellulose muaj kev ruaj ntseg rau cov ntsev dav dav, tab sis thaum lub concentration ntawm ntsev tov yog siab, lub viscosity ntawm hydroxypropyl methyl cellulose tov nyhav nce.
4. Cov dej tuav ntawm hydroxypropyl methyl cellulose nyob ntawm nws tus nqi ntxiv, viscosity, thiab lwm yam. Cov dej tuav tus nqi nyob rau hauv tib qhov ntxiv yog siab dua li ntawm methyl cellulose.
5. Qhov nplaum ntawm hydroxypropyl methyl cellulose rau mortar siv yog siab dua li ntawm methyl cellulose.
6. Hydroxypropyl methyl cellulosemuaj enzyme zoo dua li methyl cellulose, thiab muaj peev xwm ntawm enzymatic degradation hauv cov tshuaj yog qis dua methyl cellulose.
Post lub sij hawm: Apr-26-2024