Ka ọ dị ugbu a, ntụ ntụ latex na-agbanwe agbanwe arụwo ọrụ dị mkpa dị ka ihe mgbakwunye nke ngwa agha ihe owuwu. Ịtinye uzuzu latex na-agbanwe agbanwe n'ime ngwa agha nwere ike ịkwadebe ụdị ngwa agha dị iche iche dị ka nrapado tile, ngwa mkpuchi ọkụ, ngwa agha na-edozi onwe ya, putty, plasta, ngwa ngwa ịchọ mma, ihe na-atụ aka, nrụzi ngwa agha na ihe mkpuchi mmiri. Ogo ngwa na arụmọrụ ngwa nke ngwa agha ihe owuwu.
Ịmepụta ihe nkiri polymer na-aga n'ihu dị oke mkpa maka ịrụ ọrụ nke ụrọ ciment gbanwere polymer. N'oge nhazi na usoro siri ike nke ciment ciment, a ga-emepụta ọtụtụ oghere n'ime, nke na-aghọ akụkụ na-adịghị ike nke ciment. Mgbe agbakwunyere uzuzu latex redispersible, ntụ ntụ latex ga-agbasa ozugbo n'ime emulsion mgbe ọ zutere mmiri, wee gbakọta na mpaghara mmiri bara ụba (ya bụ, n'ime oghere). Ka tapawa simenti na-esetịpụ ma na-esiwanye ike, mmegharị nke ihe ndị ahụ polymer na-amachibidoro, na esemokwu dị n'etiti mmiri na ikuku na-amanye ha iji nwayọọ nwayọọ kwekọọ. Mgbe ihe ndị ahụ polymer batara na ibe ha, netwọk mmiri na-ekpochapụ site na capillaries, na polymer na-emepụta ihe nkiri na-aga n'ihu na gburugburu oghere ahụ, na-ewusi ebe ndị a na-adịghị ike ike. N'oge a, ihe nkiri polymer nwere ike ọ bụghị nanị na-arụ ọrụ hydrophobic, ma ọ bụghịkwa igbochi capillary, nke mere na ihe ahụ nwere ezigbo hydrophobicity na ikuku permeability.
Ngwa ngwa ciment na-enweghị polymer na-ejikọta ọnụ. N'ụzọ megidere nke ahụ, ụrọ ciment gbanwere polymer na-eme ka ngwa agha ahụ dum nwee njikọ chiri anya n'ihi ịdị adị nke ihe nkiri polymer, si otú a na-enweta ihe ndị dị mma na-arụ ọrụ na mmegide ihu igwe. Na latex ntụ ntụ gbanwetụrụ ngwa ngwa ciment, na latex ntụ ntụ ga-amụba porosity nke ciment mado, ma belata porosity nke interface mgbanwe mpaghara n'etiti ciment mado na mkpokọta, n'ihi na mkpokọta porosity nke ngwa agha bụ isi agbanweghị. Mgbe latex ntụ ntụ na-etolite na fim, ọ nwere ike mma igbochi pores na ngwa agha, na-eme ka Ọdịdị nke interface mgbanwe mpaghara n'etiti ciment mado na mkpokọta ọzọ ok, na permeability-eguzogide nke latex ntụ ntụ gbanwetụrụ ngwa agha na-mma na mma. , na ikike iguzogide mbibi nke mgbasa ozi na-emerụ ahụ na-abawanye. Ọ nwere mmetụta dị mma na mmelite nke ịdịte aka nke ngwa agha.
Oge nzipu: Feb-20-2023