Viscosity bụ akụkụ dị mkpa nke arụmọrụ ether cellulose.
N'ikwu okwu n'ozuzu, ka viscosity dị elu, ka mma njide mmiri nke gypsum mortar.Otú ọ dị, ka viscosity dị elu, ịdị arọ nke cellulose ether dị elu, na mbelata kwekọrọ na ya ga-enwe mmetụta na-adịghị mma na ike na ịrụ ọrụ 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.
Ka viscosity dị elu, ka ngwa ngwa mmiri ga-adịkwu viscous.N'oge a na-ewu ihe, a na-egosipụta ya dị ka ịrapagidesi ike na scraper na elu adhesion na mkpụrụ.Mana ọ naghị enyere aka nke ukwuu ịbawanye ike nhazi nke ngwa agha mmiri n'onwe ya.Tụkwasị na nke ahụ, n'oge a na-ewu ihe, ọrụ mgbochi sag nke mmiri mmiri adịghị egosi.N'ụzọ megidere nke ahụ, ụfọdụ viscosity ọkara na obere viscosity mana methyl cellulose ethers gbanwere nwere ọmarịcha arụmọrụ n'ịkwalite ike nhazi nke ngwa agha mmiri.
Ihe eji arụ ụlọ na-abụkarị ihe owuwu nwere oghere, ha niile na-enwetakwa mmiri siri ike.Otú ọ dị, a na-akwadebe ihe eji arụ ọrụ gypsum na-arụ ọrụ mgbidi site n'ịgbakwụnye mmiri na mgbidi ahụ, a na-etinyekwa mmiri ahụ ngwa ngwa site na mgbidi ahụ, na-akpata enweghị mmiri dị mkpa maka hydration nke gypsum, na-akpata ihe isi ike n'ịrụ mgbidi na ibelata. ike nkekọ, na-ebute mgbawa, Nsogbu dị mma dị ka oghere na peeling.Ịkwalite njide mmiri nke ihe owuwu ụlọ gypsum nwere ike imeziwanye ihe owuwu ụlọ na ike njikọ na mgbidi.Ya mere, onye na-edobe mmiri aghọwo otu n'ime ihe ndị dị mkpa nke ihe eji arụ ụlọ gypsum.
A na-eji gypsum plastering, gypsum bonded, caulking gypsum, gypsum putty na ihe ndị ọzọ na-ewu ntụ ntụ.Iji mee ka owuwu dị mfe, a na-agbakwunye gypsum retarders n'oge mmepụta ka ogologo oge owuwu nke gypsum slurry dị ogologo.Ebe ọ bụ na gypsum jikọtara ya na Retarder, nke na-egbochi usoro hydration nke gypsum hemihydrate.Ụdị gypsum slurry dị otú a kwesịrị ka edobe ya na mgbidi maka 1 ~ 2H tupu ịtọọ ya.Ọtụtụ n'ime mgbidi ahụ nwere ihe ndị na-eme ka mmiri na-amịkọrọ mmiri, karịsịa mgbidi brik na ihe aerated.Mgbidi, bọọdụ mkpuchi mkpuchi na ihe ndị ọzọ dị fechaa ọhụrụ mgbidi, ya mere, a ga-eme ọgwụgwọ njigide mmiri na gypsum slurry iji zere ịnyefe akụkụ nke mmiri na slurry na mgbidi, na-akpata ụkọ mmiri na hydration na-ezughị ezu mgbe gypsum. slurry na-esi ike.Mee ka nkewa na peeling nke nkwonkwo n'etiti gypsum na mgbidi elu.Ihe mgbakwunye nke onye na-ejigide mmiri bụ iji nọgide na-enwe mmiri dị na gypsum slurry, iji hụ na mmeghachi omume hydration nke gypsum slurry na interface, iji hụ na ike njikọ.Ndị na-ejigide mmiri na-ejikarị eme ihe bụ cellulose ethers, dị ka methyl cellulose (MC), hydroxypropyl methyl cellulose (HPMC), hydroxyethyl methyl cellulose (HEMC), wdg Na mgbakwunye, polyvinyl mmanya, sodium alginate, gbanwetụrụ starch, diatomaceous ụwa, obere ụwa. ntụ ntụ, wdg nwekwara ike iji melite arụmọrụ njide mmiri.
N'agbanyeghị ụdị onye na-ejigide mmiri nwere ike igbu oge ọnụego hydration nke gypsum na ogo dị iche iche, mgbe usoro ọgwụgwọ nke retarder na-anọgide na-agbanweghị agbanwe, onye na-eji mmiri na-echekwa mmiri nwere ike n'ozuzu kwụsịtụ ntọala maka nkeji 15-30.Ya mere, ọnụ ọgụgụ nke retarder nwere ike belata nke ọma.
Oge nzipu: Feb-08-2023