Redispersible latex ntụ ntụ na ndị ọzọ inorganic binders (dị ka ciment, slaked lime, gypsum, wdg) na dị iche iche aggregates, fillers na ndị ọzọ mgbakwunye (dị ka methyl hydroxypropyl cellulose ether, starch ether, lignocellulose, hydrophobic gị n'ụlọnga, wdg) maka anụ ahụ agwakọta. iji mee ngwa ngwa agwakọta akọrọ. Mgbe a na-etinye ngwa ngwa akọrọ akọrọ na mmiri ma kpalie ya, a ga-agbasasị ihe ndị ahụ latex ntụ ntụ n'ime mmiri n'okpuru ọrụ nke colloid na-echebe hydrophilic na ígwè ọrụ. Oge achọrọ maka ntụ ntụ latex nkịtị na-ekesa dị mkpụmkpụ, yana ndenye oge redispers a bụkwa ihe dị mkpa iji nyochaa ogo ya. N'oge mmalite ngwakọta, ntụ ntụ latex amalitela imetụta rheology na ịrụ ọrụ nke ngwa agha.
N'ihi njirimara dị iche iche na mgbanwe nke onye ọ bụla kewara latex ntụ ntụ, mmetụta a dịkwa iche, ụfọdụ nwere mmetụta na-enye aka na-erugharị, na ụfọdụ nwere mmetụta thixotropy na-abawanye. Usoro nke mmetụta ya sitere n'ọtụtụ akụkụ, gụnyere mmetụta nke ntụ ntụ latex na njikọ nke mmiri n'oge mgbasa, mmetụta nke viscosity dị iche iche nke ntụ ntụ latex mgbe mgbasa, mmetụta nke colloid nchebe, na mmetụta nke ciment na eriri mmiri. Mmetụta gụnyere mmụba nke ikuku ikuku na ngwa agha na nkesa nke ikuku ikuku, yana mmetụta nke ihe mgbakwunye nke ya na mmekọrịta ya na ihe ndị ọzọ. Ya mere, nhọrọ ahaziri na nkewa nkewa nke redispersible latex ntụ ntụ bụ ụzọ dị mkpa iji metụta àgwà ngwaahịa. Echiche a na-ahụkarị bụ na uzuzu latex na-emegharị emegharị na-abawanye ọdịnaya ikuku nke ngwa agha ahụ, si otú ahụ na-ete mmanụ mmanụ, na njikọ na viscosity nke uzuzu latex, karịsịa colloid nchebe, na-agbanye mmiri mgbe ọ gbasasịrị. Mmụba nke ntinye uche na-enyere aka melite njikọ nke ngwa agha ihe owuwu, si otú ahụ na-eme ka ọrụ nke ngwa agha dịkwuo mma. Mgbe nke ahụ gasịrị, a na-etinye ngwa ngwa mmiri mmiri nke nwere uzuzu latex n'elu ọrụ. Na mbelata mmiri na ọkwa atọ - absorption nke isi oyi akwa, oriri nke ciment hydration mmeghachi omume, na volatilization nke elu mmiri n'ikuku, resin particles ji nwayọọ nwayọọ na-abịaru nso , interfaces ji nwayọọ nwayọọ jikọọ na ibe ha, na n'ikpeazụ ghọọ. ihe nkiri polymer na-aga n'ihu. Usoro a na-emekarị na pores nke ngwa agha na elu nke siri ike.
Ekwesiri imesi ya ike na iji mee ka usoro a ghara imeghari, ya bụ, mgbe ihe nkiri polymer na-ezute mmiri ọzọ, ọ gaghị agbasa ọzọ, na colloid nchebe nke redispersible latex ntụ ntụ ga-ekewapụ na usoro ihe nkiri polymer. Nke a abụghị nsogbu na alkaline ciment ngwa agha usoro, n'ihi na ọ ga-saponified site alkali eme site ciment hydration, na n'otu oge ahụ, adsorption nke quartz-dị ka ihe ga-eji nwayọọ nwayọọ kewapụ ya na usoro, na-enweghị nchebe nke. hydrophilicity Colloid, nke na-adịghị ike n'ime mmiri ma guzobe site na mgbasa otu oge nke redispersible latex ntụ ntụ, nwere ike ịrụ ọrụ ọ bụghị naanị n'okpuru ọnọdụ akọrọ, kamakwa n'okpuru ọnọdụ imikpu mmiri ogologo oge. Na usoro ndị na-abụghị alkaline, dị ka usoro gypsum ma ọ bụ usoro nwere nanị ihe ndị na-emepụta ihe, n'ihi ihe ụfọdụ, colloid nchebe ka na-adị n'ime ihe nkiri polymer ikpeazụ, nke na-emetụta nkwụsị mmiri nke ihe nkiri ahụ, ma n'ihi na a naghị eji usoro ndị a eme ihe maka Na ikpe nke imikpu ogologo oge n'ime mmiri, na polymer ka nwere ihe eji arụ ọrụ pụrụ iche, ọ dịghị emetụta ngwa nke redispersible latex ntụ ntụ na usoro ndị a.
Site na nguzobe nke ihe nkiri polymer ikpeazụ, a na-emepụta usoro usoro nke mejupụtara inorganic na organic binders n'ime ngwa agha a gwọrọ, ya bụ, ihe hydraulic na-eme ka ọ bụrụ ihe na-adịghị mma na nke siri ike, na uzuzu latex na-agbanwe agbanwe na-etolite ihe nkiri n'etiti oghere na elu siri ike. Njikọ na-agbanwe agbanwe. Enwere ike iche ụdị njikọ a ka ejikọtara ya na ọkpụkpụ siri ike site na ọtụtụ obere mmiri. Ebe ọ bụ na ike nkwụsị nke ihe nkiri polymer resin nke e mepụtara site na latex ntụ ntụ na-abụkarị usoro dị elu karịa nke ihe hydraulic, ike nke ngwa agha n'onwe ya nwere ike ime ka ọ dịkwuo mma, ya bụ, a ga-eme ka njikọ dị mma. Ebe ọ bụ na mgbanwe na nrụrụ nke polymer dị elu karịa nke ihe owuwu siri ike dị ka ciment, a na-eme ka ọkpụkpụ nke ngwa agha dịkwuo mma, na mmetụta nke ịgbasa nrụgide na-eme ka ọ dịkwuo mma, si otú ahụ na-eme ka nkwụsị mgbawa nke ngwa agha ahụ dịkwuo mma.
Oge nzipu: Mar-07-2023