A na-eji simenti eme ihe n'ọtụtụ ebe n'ihe owuwu, okporo ụzọ, àkwà mmiri, ọwara mmiri na ọrụ ndị ọzọ. N'ihi nnukwu akụrụngwa ha, ọnụ ala dị ala na ihe owuwu dị mma, ha aghọwo ihe eji ewu ụlọ dị mkpa. Otú ọ dị, ihe ndị dabeere na ciment na-enwekwa nsogbu ụfọdụ na ngwa ndị bara uru, dị ka nkwụsị mgbape dị ala, mmiri na-adịghị mma na ihe dị elu chọrọ maka mmiri nke ciment mado n'oge a na-ewu. Iji dozie nsogbu ndị a, ndị na-eme nchọpụta na-agbalịsi ike itinye ihe dị iche iche polymer n'ime ihe ndị dabeere na ciment iji meziwanye arụmọrụ ha.Hydroxypropyl methylcellulose (HPMC), dị ka ihe a na-ejikarị eme ihe na-emepụta ihe na-eme ka mmiri na-eme ka mmiri na-emepụta ihe, ejiriwo ya mee ihe iji meziwanye ihe dị iche iche nke ihe ndị dị na ciment n'ihi àgwà ọma ya nke rheological, mmetụta nke siri ike, njide mmiri na nkwụsị mmiri.
1. Njirimara ndị bụ isi nke hydroxypropyl methylcellulose
KimaCell®Hydroxypropyl methylcellulose bụ ngwakọta polymer enwetara site na ngbanwe kemịkalụ nke cellulose eke, nwere ezigbo mmiri solubility, njupụta, njide mmiri na nkwụsi ike dị elu. Ọ nwere ike ịhazigharị viscosity, fluidity na mgbochi nkewa nke ihe ndị dabeere na ciment, ma nweekwa ụfọdụ ikuku ikuku, mgbochi mmetọ na mgbochi ịka nká. A na-ejikarị HPMC eme ihe eji ewu ụlọ dịka ngwa ngwa, ihe simenti, ngwa akọrọ, na mkpuchi, ma na-arụ ọrụ dị mkpa n'ịgbanwe nhazi nhazi nke ihe ndị sitere na ciment.
2. Mmelite nke rheological Njirimara nke ihe ndị sitere na ciment site na hydroxypropyl methylcellulose.
Njirimara rheological nke ihe ndị sitere na ciment dị oké mkpa maka ịrụ ọrụ ihe owuwu, karịsịa na nhazi nke mgbapụta, ihe owuwu, na mkpuchi elu. Ngwongwo rheological dị mma nwere ike imeziwanye nrụpụta ihe owuwu ma hụ na ịdị mma ụlọ. Mgbakwunye nke HPMC nwere ike imeziwanye mmiri nke ihe ndị sitere na ciment. Kpọmkwem, HPMC na-abawanye viscosity nke tapawa ciment, na-eme ka ngwakọta ahụ kwụsie ike ma belata ihe omume nkewa. N'okpuru ala mmiri-ciment ruru ọnọdụ, HPMC nwere ike n'ụzọ dị irè melite workability nke konkret na ngwa agha, na-eme ka ha nwere mma fluidity, ma na-ebelata evaporation ọnụego nke ihe onwunwe na ogologo oge owuwu.
3. Mmelite nke mgbawa mgbawa nke ihe ndị sitere na ciment sitere na HPMC
Ihe ndị sitere na ciment na-adịkarị mfe mgbawa n'oge usoro siri ike, karịsịa n'ihi ihe ndị dị ka ihicha ihicha, mgbanwe okpomọkụ, na ibu dị n'èzí. Mgbakwunye nke HPMC nwere ike imeziwanye mgbape mgbape nke ihe ndị sitere na ciment. Nke a bụ tumadi n'ihi ezigbo njigide mmiri na mmetụta nke na-ebuwanye ibu nke HPMC. Mgbe a na-agbakwunye HPMC na ihe ndị sitere na ciment, ọ nwere ike ibelata evaporation nke mmiri n'ụzọ dị irè ma na-ebelata ọsọ ọsọ nke mado ciment, si otú ahụ na-ebelata mgbawa mgbawa nke oke mmiri na-agbanwe. Na mgbakwunye, HPMC nwekwara ike imeziwanye usoro nke ihe ndị sitere na ciment, mee ka ike ha sie ike na nguzogide mgbape.
4. Mee ka mmiri na-eguzogide mmiri na ịdịte aka nke ihe ndị dabeere na ciment
Mmiri na-eguzogide mmiri na ịdịte aka nke ihe ndị dabeere na ciment bụ otu n'ime ihe ndị dị mkpa na-egosi ngwa ha n'ọrụ ihe owuwu. Dị ka polymer molekụla dị elu, HPMC nwere ike melite nguzogide mmiri nke ihe ndị dabeere na ciment. Mkpụrụ ndụ HPMC nwere hydrophilicity siri ike ma nwee ike ịmepụta oyi akwa hydration kwụsiri ike na mado ciment iji belata ntinye mmiri. N'otu oge ahụ, KimaCell®HPMC nwekwara ike ịkwalite microstructure nke ihe ndị sitere na ciment, belata porosity, ma si otú ahụ kwalite ihe mgbochi mgbochi na nguzogide mmiri. N'ebe ụfọdụ pụrụ iche, dị ka gburugburu iru mmiri ma ọ bụ mmekọrịta ogologo oge na mmiri, iji HPMC eme ihe nwere ike imeziwanye ịdịte aka nke ihe ndị sitere na ciment.
5. HPMC thickening mmetụta na ciment dabeere ihe
Mmetụta siri ike nke HPMC na ihe ndị sitere na ciment bụ otu n'ime isi ihe maka ngwa ya sara mbara. Na ciment tapawa, HPMC nwere ike na-etolite a atọ akụkụ netwọk Ọdịdị site mgbanwe nke molekụla Ọdịdị ya, si otú budata ụba viscosity nke mado. Mmetụta a na-eme ka ọ dị arọ nwere ike ọ bụghị nanị na-eme ka ihe ndị dabeere na ciment dịkwuo mma n'oge a na-ewu ụlọ ma na-ezere nkewa nke ciment tapawa, ma na-emeziwanye mmetụta mkpuchi nke mado na ịdị nro nke elu ụlọ ahụ ruo n'ókè ụfọdụ. Maka ngwa agha na ihe ndị ọzọ sitere na ciment, mmetụta na-ebuwanye ibu nke HPMC nwere ike imeziwanye arụmọrụ na ngbanwe nke ihe ndị ahụ.
6. HPMC na-eme ka arụmọrụ zuru oke nke ihe ndị dabeere na ciment
The keukwu mmetụta nkeHPMCna ihe ndị dabeere na ciment, karịsịa mmetụta synergistic na mmiri mmiri, nkwụsị mgbawa, njigide mmiri na mmiri na-eguzogide mmiri, nwere ike imeziwanye arụmọrụ nke ihe ndị dabeere na ciment. Dị ka ihe atụ, HPMC nwere ike hụ na fluidity nke ciment dabeere ihe mgbe eme ha mgbape eguzogide na mmiri na-eguzogide na hardening ogbo mgbe ewu. Maka ụdị ihe dị iche iche nke simenti, mgbakwunye nke HPMC nwere ike ịhazigharị arụmọrụ ha ka ọ dị mkpa iji kwalite ịrụ ọrụ na ogologo oge nke ihe ndị dabeere na ciment.
Hydroxypropyl methylcellulose (HPMC), dị ka a elu-arụmọrụ mmiri-soluble polymer ihe, nwere ike budata mma otutu Njirimara nke ciment dabeere ihe, karịsịa na rheology, mgbape eguzogide, mmiri na-eguzogide na ndim mmetụta. Ọmarịcha arụmọrụ ya na-eme ka HPMC na-ejikarị ihe eji arụ ụlọ, ọkachasị ihe ndị sitere na ciment. N'ọdịniihu, na-aga n'ihu na-aga n'ihu na-aga n'ihu n'ịrụ ọrụ nke ihe ndị dabeere na ciment chọrọ, ikike ntinye nke KimaCell®HPMC na ihe ndị na-emepụta ya ka kwesịrị ka enyochakwu na ịzụlite.
Oge nzipu: Jan-27-2025