Ịtinye 2% na 3% nke ntụ ntụ latex redispersible nwere ike imeziwanye nkwụsi ike nke ngwa agha na-edozi onwe ya, nke nwere ike izute 28d eyi nguzogide ≤ 0.59 edepụtara na ọkọlọtọ.Polymer na-agbasa na ngwa agha ahụ wee mepụta ihe nkiri, jupụta pores nke slurry ma na-emekọ ihe na ngwaahịa hydration ciment iji mepụta usoro netwọk akụkụ atọ, nke na-eme ka usoro ngwa agha dịkwuo ọnụ.Ihe nkiri polymer na-agbanwe agbanwe na-enyere aka ịkwụsị nrụgide dị n'ime nke ngwa agha ahụ, na-ebelata nrụgide nrụgide, ma na-ebelata ọgbọ nke micro-cracks, na ihe nkiri polymer a ọ bụghị nanị na-arụ ọrụ hydrophobic kamakwa ọ naghị egbochi capillary, nke mere na ihe ahụ. nwere ezigbo hydrophobicity na breathability.N'otu oge ahụ, n'ihi akara akara nke ihe nkiri polymer kpatara, ihe na-adịghị ahụkebe nke mmiri, nguzogide kemịkalụ, nkwụsi ike ifriizi, na ịdịte aka na-akawanye mma, na ike na-ehulata, mgbape mgbape, ike adhesion, na elasticity. a na-emezi ngwa agha ahụ.Na ike, na n'ikpeazụ nwere ike zere shrinkage cracking nke ngwa agha.
Nnwale achọpụtala na mmiri mbụ nke ngwa agha gypsum na-ebuli onwe ya na-abawanye na mbụ wee belata na mmụba nke ntụ ntụ latex.Ihe kpatara ya bụ na latex ntụ ntụ nwere ụfọdụ viscosity na mmiri gbazere.A na-eme ka ikike nkwusioru nke slurry na-eme ka ọ dịkwuo mma, nke bara uru na ntinye nke slurry;mgbe ọnụ ọgụgụ nke latex ntụ ntụ na-aga n'ihu na-abawanye, mmụba nke viscosity nke slurry na-eduga n'ịbawanye viscosity nke slurry, na mmiri mmiri na-egosi ọnọdụ ala.Ọnụ ọgụgụ nke ntụ ntụ latex fọrọ nke nta ka ọ bụrụ enweghị mmetụta na 20-min fluidity nke ngwa agha.Dị ka ihe nkedo organic, latex ntụ ntụ na-adabere na evaporation nke mmiri na slurry, na ihe nkiri na-emepụta ike nkekọ, na gypsum base bụ onwe-leveling na akọrọ ala.Mmiri dị na ngwa agha na-ekpochapụ, na latex ntụ ntụ nwere ike ịmepụta ihe nkiri na-aga n'ihu, nke nwere ezigbo ike jikọrọ ọnụ.Ike akọrọ nke ngwa agha gypsum dabeere na onwe ya na-abawanye na mmụba nke ọdịnaya ntụ ntụ latex.N'ime ngwa agha na-edozi onwe ya nke dabeere na gypsum na-enweghị ntụ ntụ latex, e nwere ọnụ ọgụgụ buru ibu nke kristal gypsum na-eme ka mkpanaka na columnar na dihydrate gypsum kristal dihydrate na n'etiti dihydrate gypsum crystals na fillers.Kpọkọta ọnụ iji mee ka ngwa agha na-edozi onwe ya nke gypsum na-emepụta ike, na gypsum nke na-edozi onwe ya na-ejikọta ya na uzuzu latex redispersible, ntụ ntụ latex na-emepụta njikọ filamentary na gypsum nke na-edozi onwe ya, na dihydrate. kristal gypsum na fillers, kristal A na-emepụta àkwà mmiri organic n'etiti kristal na dihydrate gypsum crystal, a na-emepụta ihe nkiri organic na dihydrate gypsum crystal iji kechie na jikọọ akụkụ ndị na-ekpuchi n'etiti kristal dihydrate gypsum, si otú ahụ na-amụba njikọ na ịdị n'otu. nke gypsum nke na-eme ka ọkpụkpụ na-eme ka ọ dịkwuo mma ma na-emeziwanye ike nke gypsum na-eme ka ọkpụkpụ na-eme ka ọ dị elu na-emepụta ihe nkiri na-emepụta ihe nkiri na ngwa ngwa, nke nwere ike imeziwanye njikọ na njikọ ike nke ngwa agha akọrọ.Nhazi nke njikọ dị irè n'etiti ndị na-ejuputa na-eme ka njikọ dị n'etiti kristal gypsum dihydrate na ihe ndị na-ejuputa, si otú ahụ na-eme ka ike nke njikọ nke gypsum dabeere na ngwa ngwa na-eme ka onwe ya dịkwuo mma.
Oge nzipu: Eprel-10-2023