Kedu ka esi nwalee viscosity nke hydroxypropyl methylcellulose?

Hydroxypropyl methylcellulose maka owuwu kwesịrị izere ntinye mmiri n'ime mgbidi ahụ, na njigide mmiri kwesịrị ekwesị na ngwa ngwa nwere ike ime ka ciment rụọ ọrụ nke ọma maka mmiri na mmiri. Hydroxypropyl methylcellulose viscosity nke cellulose na ngwa agha na-adaba kpọmkwem, ka viscosity dị elu, ka mma njigide mmiri nke hydroxypropyl methylcellulose.

Ozugbo ọdịnaya mmiri nke hydroxypropyl methylcellulose dị elu, njide mmiri nke hydroxypropyl methylcellulose ga-ebelata, nke ga-eduga ozugbo na mbelata nrụpụta ọrụ nke hydroxypropyl methylcellulose. Anyị na-amakwa ihe ndị na-adị mfe ihie ụzọ. Anyị kwesịrị idowe ya mgbe niile ma anyị ga-enweta nsonaazụ na-atụghị anya ya.

Viscosity pụtara ìhè bụ ihe ngosi dị mkpa nke hydroxypropyl methylcellulose. Ụzọ mkpebi siri ike bụ rotational viscometry, capillary viscometry na viscometry mgbụsị akwụkwọ na-ada.

N'oge gara aga, usoro mkpebi nke hydroxypropyl methylcellulose bụ capillary viscometry, na-eji ubbelohde viscometer. Na-emekarị ngwọta mkpebi mkpebi bụ ngwọta mmiri nke 2, usoro a bụ: V=Kdt. V na-anọchi anya viscosity, unit bụ, K bụ mgbe niile nke viscometer, d na-anọchi anya njupụta na okpomọkụ mgbe niile, t na-ezo aka na oge site n'elu ruo ala site na viscometer, unit bụ nke abụọ s. Usoro a dịtụ mfe iji rụọ ọrụ, ma ọ bụrụ na e nwere ihe ndị na-adịghị ike, ọ dị mfe ime ka njehie, ọ na-esikwa ike ịchọpụta àgwà hydroxypropyl methylcellulose.

Nsogbu nke delamination nke gluu ihe owuwu bụ nnukwu nsogbu ndị ahịa zutere. Nke mbụ, nsogbu nke akụrụngwa kwesịrị ịtụle na delamination nke gluu ihe owuwu. Isi ihe kpatara delamination nke gluu ihe owuwu bụ mmanya polyvinyl (PVA) na hydroxypropyl methylcellulose (HPMC). kpatara enweghị ndakọrịta. Nke abuo, ọ bụ n'ihi na oge na-akpali akpali ezughị; e nwekwara eziokwu na ndim arụmọrụ nke mwube gluu adịghị mma.

Na gluu ihe owuwu, a ga-eji ngwa ngwa hydroxypropyl methylcellulose (HPMC) mee ihe, n'ihi na hydroxypropyl methylcellulose (HPMC) na-agbasasị na mmiri na-enweghị ezigbo mgbasa. Ihe dị ka nkeji 2, viscosity nke mmiri mmiri na-eji nwayọọ nwayọọ na-abawanye, na-akpụ a viscos colloid transperent.

Ngwaahịa na-ekpo ọkụ na-ekpo ọkụ, mgbe a na-ezute mmiri oyi, nwere ike ịgbasa ngwa ngwa na mmiri ọkụ ma pụọ ​​​​na mmiri ọkụ. Mgbe okpomọkụ na-adaba n'otu ọnọdụ okpomọkụ, viscosity ga-eji nwayọọ nwayọọ na-apụta ruo mgbe ọ na-emepụta colloid viscous na-egbuke egbuke. Ọnụ ego a tụrụ aro nke hydroxypropyl methylcellulose (HPMC) agbakwunyere na gluu ihe owuwu bụ 2-4kg.

Hydroxypropyl methylcellulose (HPMC) nwere akụrụngwa kemịkalụ kwụsiri ike, nguzogide mildew, yana ezigbo njide mmiri na gluu ihe owuwu, mgbanwe na uru pH adịghị emetụta ya. Enwere ike iji ya na viscosity sitere na 100,000 S ruo 200,000 S. Ma na mmepụta, elu viscosity, ka mma. Viscosity na-agbanwe agbanwe na ike nkekọ. Nke dị elu nke viscosity, ike dị ntakịrị. N'ozuzu, viscosity nke 100,000 S kwesịrị ekwesị.