Na-ekesa polymer ntụ ntụ na ndị ọzọ inorganic binders (dị ka ciment, slaked wayo, gypsum, wdg) na dị iche iche aggregates, fillers na ndị ọzọ mgbakwunye (dị ka methyl hydroxypropyl cellulose ether, starch ether, lignocellulose, hydrophobic Agents, wdg) na-anụ ahụ gwakọtara na-eme ka akọrọ-mixed mortar. Mgbe a na-agwakọta ngwa ngwa akọrọ akọrọ na mmiri, n'okpuru ọrụ nke colloid na-echebe hydrophilic na ịkpụcha ígwè ọrụ, ihe nkedo latex powder ga-agbasa n'ime mmiri.
N'ihi àgwà dị iche iche na mgbanwe nke ọ bụla subdivided latex ntụ ntụ, mmetụta a dịkwa iche iche, ụfọdụ nwere mmetụta nke na-akwalite eruba, mgbe ụfọdụ nwere mmetụta nke ịba ụba thixotropy. 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 nke ihe ndị na-esonụ na-agụnye mmetụta na mmụba nke ikuku ikuku nke ngwa agha na nkesa nke ikuku ikuku, yana mmetụta nke ihe mgbakwunye ya na mmekọrịta ya na ihe ndị ọzọ. Ya mere, nhọrọ ahaziri na nkewa nkewa nke redispersible polymer powder bụ ụzọ dị mkpa iji metụta àgwà ngwaahịa. N'ime ha, ihe a na-ahụkarị bụ na ntụ ntụ polymer na-emegharị emegharị na-emekarị ka ikuku ikuku nke ngwa agha na-abawanye, si otú ahụ na-eme ka owuwu nke ngwa agha lubricating, na njikọ na viscosity nke polymer ntụ ntụ, karịsịa mgbe colloid nchebe na-agbasasị, na mmiri. Mmụba nke α na-enye aka n'ịkwalite njikọ nke ngwa agha ihe owuwu, si otú a na-eme ka arụ ọrụ nke ngwa agha dịkwuo mma. Mgbe nke ahụ gasịrị, a na-etinye ngwa ngwa mmiri mmiri nke nwere mkpofu uzuzu latex n'elu ọrụ. Na mbelata nke mmiri na ọkwa atọ - absorption nke isi oyi akwa, oriri nke ciment hydration mmeghachi omume, na volatilization nke elu mmiri mmiri n'ime ikuku, resin ụmụ irighiri ji nwayọọ nwayọọ na-abịaru nso na , interface ahụ ji nwayọọ nwayọọ na-ejikọta ibe ya, n'ikpeazụkwa na-aghọ 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 imebi ya, ya bụ, mgbe a na-agbasaghị ihe nkiri polymer mgbe ọ na-ezute mmiri ọzọ, a ghaghị kewapụ colloid nchebe nke polymer powders redispersible na usoro ihe nkiri polymer. Nke a abụghị nsogbu na usoro ciment ciment alkaline, n'ihi na ọ ga-abụ saponified site na alkali nke hydration nke ciment na-emepụta, na n'otu oge ahụ, mgbasa ozi nke quartz ga-eji nwayọọ nwayọọ kewapụ ya na usoro na-enweghị nchebe hydrophilic. Colloid, ihe nkiri 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 nke imikpu ogologo oge n'ime mmiri. Na usoro na-abụghị alkaline, dị ka gypsum usoro ma ọ bụ usoro na naanị fillers, na-echebe colloid ka na akụkụ ụfọdụ ugbu a na ikpeazụ polymer film n'ihi ihe ụfọdụ, na-emetụta mmiri na-eguzogide mmiri nke film, ma ebe ọ bụ na ndị a usoro na-adịghị eji maka N'ihe banyere ogologo oge imikpu n'ime mmiri, na polymer ka nwere ya pụrụ iche n'ibu Njirimara, ọ dịghị emetụta ngwa nke dispersible polymer ntụ ntụ na usoro ndị a.
Oge nzipu: Eprel-25-2024