Ngwakọta mmiri na-agwakọta mmiri bụ ciment, nchịkọta dị mma, ihe mgbakwunye, mmiri na ihe dị iche iche kpebisiri ike dabere na arụmọrụ. Dị ka akụkụ ụfọdụ si dị, mgbe a tụrụ ya ma gwakọta ya na ebe a na-agwakọta ya, a na-ebuga ya na ebe a na-eji igwekota igwe, ma tinye ya n'ime ihe pụrụ iche A na-echekwa mmiri mmiri n'ime akpa ahụ ma jiri ya mee ihe n'ime oge a kapịrị ọnụ.
A na-eji Hydroxypropyl methylcellulose mee ihe dị ka ihe na-edobe mmiri na retarder nke ngwa ngwa ciment iji mee ka ngwa agha ahụ nwee ike ịmịpụta. Ejiri ya dị ka ihe nkedo na plasta, ọ na-eme ka mgbasawanye gbasaa ma na-agbatị oge ọrụ. Ọrụ njigide mmiri nke hydroxypropyl methylcellulose HPMC na-egbochi slurry site na ịgbawa n'ihi ihicha ngwa ngwa mgbe ngwa ngwa, ma na-eme ka ike dịkwuo elu mgbe ọ gbasịrị. Njide mmiri bụ ọrụ dị mkpa nke hydroxypropyl methylcellulose HPMC, ma ọ bụkwa arụmọrụ nke ọtụtụ ndị na-emepụta mmiri mmiri na-emepụta ngwa agha na-elebara anya. Ihe ndị na-emetụta mmetụta njide mmiri nke ngwa ngwa agwakọta mmiri na-agụnye ọnụọgụ HPMC agbakwunyere, viscosity nke HPMC, ịdị mma nke akụkụ ahụ, na okpomọkụ nke gburugburu ebe obibi.
Ọrụ dị mkpa nke hydroxypropyl methylcellulose HPMC na mmiri-mix ngwa agha tumadi nwere akụkụ atọ, otu bụ magburu onwe mmiri njigide ikike, nke ọzọ bụ mmetụta na agbanwe agbanwe na thixotropy nke mmiri-mix ngwa agha, na nke atọ bụ mmekọrịta na ciment. Mmetụta njide mmiri nke cellulose ether na-adabere na mmịnye mmiri nke oyi akwa isi, ihe mejupụtara nke ngwa agha ahụ, ọkpụrụkpụ nke akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa, mmiri chọrọ ngwa ngwa, na oge nhazi nke ihe nhazi. Ka nghọta nke hydroxypropyl methylcellulose dị elu, ka mma na-ejigide mmiri.
Ihe ndị na-emetụta njide mmiri nke mmiri mmiri-mix mortar gụnyere cellulose ether viscosity, ego mgbakwunye, urughuru mma na ojiji okpomọkụ. Ka viscosity nke cellulose ether dị ukwuu, otú ahụ ka ọrụ njigide mmiri dị mma. Viscosity bụ oke dị mkpa nke arụmọrụ HPMC. Maka otu ngwaahịa ahụ, nsonaazụ viscosity nke a tụrụ site na ụzọ dị iche iche dị nnọọ iche, ụfọdụ nwere ọbụna okpukpu abụọ. Ya mere, mgbe ị na-atụnyere viscosity, a ghaghị ime ya n'etiti otu ụzọ ule, gụnyere okpomọkụ, rotor, wdg.
N'ikwu okwu n'ozuzu, ka viscosity dị elu, ka mma na-ejide mmiri. Otú ọ dị, ka elu viscosity na elu molekụla arọ nke HPMC, kwekọrọ ekwekọ mbelata na ya solubility ga-enwe mmetụta ọjọọ na ike na ewu arụmọrụ nke ngwa agha. Ihe dị elu nke viscosity, otú ahụ ka ọ na-apụta ìhè nke ọma mmetụta na ngwa ngwa, ma ọ bụghị kpọmkwem. Nke dị elu nke viscosity, otú ahụ ka ngwa ngwa mmiri ga-adịkwu viscous, ya bụ, n'oge a na-ewu ihe, a na-egosipụta ya dị ka ịrapara na scraper na nnukwu adhesion na mkpụrụ. Mana ọ naghị enye aka ịbawanye ike nhazi nke ngwa agha mmiri n'onwe ya. N'oge a na-ewu ụlọ, arụ ọrụ mgbochi sag abụghị ihe doro anya. N'ụzọ megidere nke ahụ, ụfọdụ hydroxypropyl methylcellulose gbanwere nwere obere viscosity na obere viscosity nwere ọmarịcha arụmọrụ n'ịkwalite ike nhazi nke ngwa agha mmiri.
Ọnụ ọgụgụ dị ukwuu nke cellulose ether HPMC agbakwunyere na ngwa ngwa agwakọta mmiri, ka mma na-arụ ọrụ njide mmiri, na elu viscosity, ka mma na-arụ ọrụ njide mmiri. Ịdị mma bụkwa ihe nrịbama arụmọrụ dị mkpa nke hydroxypropyl methylcellulose.
Ịdị mma nke hydroxypropyl methylcellulose nwekwara mmetụta ụfọdụ na njide mmiri ya. N'ikwu okwu n'ozuzu, maka hydroxypropyl methylcellulose nwere otu viscosity mana ịdị mma dị iche iche, nke ọma na-eme ka ọ dịkwuo mma mmetụta njide mmiri dị mma.
Na ngwa agha agwakọta mmiri, ihe mgbakwunye cellulose ether HPMC dị obere, mana ọ nwere ike melite arụmọrụ nke ngwa agha agwakọta mmiri, ọ bụkwa ihe mgbakwunye bụ isi nke na-emetụta arụmọrụ nke ngwa agha. Nhọrọ ezi uche dị na ya nke hydroxypropyl methylcellulose ziri ezi nwere mmetụta dị ukwuu na nkwalite arụmọrụ nke ngwa agha agwakọta mmiri.
Oge nzipu: Mar-31-2023