Njide mmiri sitere na hydroxypropyl methylcellulose bụ otu n'ime njirimara dị mkpa nke hydroxypropyl methylcellulose. Ihe ndị dị ka okpomọkụ ikuku, okpomọkụ na ọsọ ọsọ ikuku ga-emetụta ọnụ ọgụgụ mmiri na-agbanwe agbanwe na ciment mortar na ngwaahịa gypsum. Ya mere, na oge dị iche iche, e nwere ụfọdụ ọdịiche dị na mmiri na-ejide mmiri nke ngwaahịa na otu ego nke hydroxypropyl methylcellulose agbakwunyere.
N'ozuzu, ka viscosity nke hydroxypropyl methylcellulose dị elu, otú ahụ ka mmetụta njide mmiri ga-adị mma, ma mmetụta nke viscosity na njide mmiri ga-ebelata mgbe viscosity karịrị 100,000 mpa.s. Maka hydroxypropyl methylcellulose nwere viscosity karịrị 100,000, ọ dị mkpa ịbawanye ọnụọgụ hydroxypropyl methylcellulose iji mee ka ọnụ ọgụgụ njide mmiri dịkwuo ukwuu.
N'ime ihe owuwu a kapịrị ọnụ, enwere ike gbanwee mmetụta njide mmiri nke slurry site na ịba ụba ma ọ bụ ibelata ọnụọgụ hydroxypropyl methylcellulose. Ngwaahịa usoro Hydroxypropyl methylcellulose nwere ike dozie nsogbu nke njigide mmiri n'okpuru oke okpomọkụ. N'oge okpomọkụ dị elu, karịsịa n'ebe ndị na-ekpo ọkụ ma na-ekpo ọkụ na ebe dị nro na-ewu n'akụkụ anwụ na-acha, a chọrọ hydroxypropyl methylcellulose dị elu iji meziwanye njide mmiri nke slurry.
Hydroxypropyl methylcellulose dị elu nwere ezigbo otu. A na-ekesa otu methoxyl na hydroxypropoxyl ya n'otu n'otu n'otu agbụ molekul cellulose. Ọ nwere ike melite atom oxygen na hydroxyl na ether bond. Ikike nke mkpakọrịta mmiri na-emepụta njikọ hydrogen na-atụgharị mmiri efu ka ọ bụrụ mmiri a kpara akpa, si otú ahụ na-achịkwa evaporation nke mmiri nke ọma site na ihu igwe dị elu na-eme ka mmiri dị elu.
Hydroxypropyl methylcellulose dị elu nwere ike gbasaa nke ọma na ngwa ngwa ciment na ngwaahịa gypsum, kechie ihe niile siri ike, ma mepụta ihe nkiri na-ekpo ọkụ, na mmiri dị na ala ga-eji nwayọọ nwayọọ na-ahapụ ogologo oge. Mmeghachi omume hydration na-eme site na ihe gelling inorganic, si otú a hụ na ike nkekọ na ike mkpakọ nke ihe ahụ. Ya mere, n'ime ụlọ okpomọkụ dị elu, iji nweta mmetụta njigide mmiri, ọ dị mkpa ịgbakwunye ngwaahịa hydroxypropyl methylcellulose dị elu nke ọma dịka usoro ahụ si dị, ma ọ bụghị ya, hydration na-ezughị ezu, ike na-ebelata, na mgbawa ga-eme n'ihi ya. ruo oke ihicha. Nsogbu dị mma dị ka igwu mmiri, olulu na ịdaba na-abawanyekwa ihe isi ike nke ihe owuwu maka ndị ọrụ. Ka okpomọkụ na-adaba, a pụrụ iji nwayọọ nwayọọ belata ọnụ ọgụgụ nke hydroxypropyl methylcellulose, ma nwee ike nweta otu mmetụta nke njide mmiri.
Oge nzipu: Eprel-13-2023