Hydroxypropyl methyl cellulose na akọrọ ngwa agha, cellulose ether mgbakwunye bụ nnọọ ala, ma nwere ike budata melite arụmọrụ nke mmiri ngwa agha, ngwa agha na-ewu ịrụ ọrụ bụ otu n'ime isi ihe mgbakwunye. Ugbu a, hydroxypropyl methyl cellulose eji na akọrọ ngwa agha cellulose ether bụ tumadi hydroxypropyl methyl cellulose ether (HPMC). Hydroxypropyl methyl cellulose na akọrọ ngwa agha HPMC tumadi ekere òkè na mmiri njide, ndim, mma arụmọrụ nke ewu. Hydroxypropyl methylcellulose HPMC anaghị esonye na mmeghachi omume kemịkal ọ bụla, naanị na-arụ ọrụ inyeaka. Putty ntụ ntụ agbakwunyere mmiri, na mgbidi, bụ mmeghachi omume kemịkalụ, n'ihi na e nwere ọgbọ ọhụrụ ihe, putty ntụ ntụ na mgbidi gbadaa site na mgbidi, ala n'ime ntụ ntụ, na mgbe ahụ na-eji, ọ dịghịzi, n'ihi na kpụrụ a. ihe ọhụrụ (calcium carbonate). Isi ihe dị na ntụ ntụ ntụ ntụ ntụ bụ: Ca (OH) 2, CaO na obere ego CaCO3 ngwakọta, CaO + H2O = Ca (OH) 2 - Ca (OH) 2 + CO2 = CaCO3↓ + H2O calcium ash na mmiri. na ikuku n'okpuru omume nke CO2, e guzobere calcium carbonate, na HPMC naanị mmiri njide, inyeaka calcium ash mma mmeghachi omume, ya onwe-adịghị ekere òkè ọ bụla mmeghachi omume.
High mma nke hydroxypropyl methyl cellulose nwere ike uniformly na n'ụzọ dị irè gbasasịa na ciment ngwa agha na plasta ngwaahịa, na ngwugwu niile siri ike ahụ, na-etolite a oyi akwa nke wetting film, na mmiri na isi ruo ogologo oge ji nwayọọ nwayọọ tọhapụrụ, na inorganic cementitious ihe hydration mmeghachi omume. , ka iji hụ na ike nkekọ na mkpakọ ike nke ihe. Ya mere, na elu okpomọkụ okpomọkụ ewu ewu, iji nweta mmiri njigide mmetụta, mkpa ka ịgbakwunye elu àgwà HPMC ngwaahịa dị ka usoro, ma ọ bụghị ya, a ga-akọrọ ngwa ngwa ma kpatara ezughị ezu hydration, ike mbelata, cracking, efu. drum na-adapụ na nsogbu ndị ọzọ dị mma, ma na-amụbakwa ihe isi ike nke ndị ọrụ na-ewu ụlọ. Ka okpomọkụ na-ebelata, ọnụ ọgụgụ mmiri nke HPMC gbakwunyere nwere ike iji nwayọọ nwayọọ belata, ma nwee ike nweta otu mmetụta njide mmiri.
Oge nzipu: Sep-16-2022