Na-ekesa polymer ntụ ntụ na ndị ọzọ inorganic adhesives (dị ka ciment, slaked wayo, gypsum, ụrọ, wdg) na dị iche iche aggregates, fillers na ndị ọzọ mgbakwunye [dị ka hydroxypropyl methylcellulose, polysaccharide (starch ether), eriri Fiber, wdg] na-anụ ahụ agwakọta na-eme ka akọrọ-agwakọta mor. Mgbe a na-agbakwunye ụrọ ntụ ntụ akọrọ na mmiri ma kpalie ya, n'okpuru ọrụ nke hydrophilic colloid na-echebe ya na ike ịkwa osisi, a pụrụ ịgbasa ihe ndị ahụ latex ntụ ntụ ngwa ngwa n'ime mmiri ahụ, nke zuru ezu iji mee ka ntụ ntụ na-agbanwe agbanwe zuru ezu. The mejupụtara nke roba ntụ ntụ dị iche iche, nke nwere mmetụta na rheology nke ngwa agha na dị iche iche na-ewu Njirimara: mmekọrịta nke latex ntụ ntụ maka mmiri mgbe ọ na-redispersed, dị iche iche viscosity nke latex ntụ ntụ mgbe dispersion, mmetụta na ikuku ọdịnaya nke ngwa agha na nkesa nke egosipụta, The mmekọrịta n'etiti roba ntụ ntụ na ndị ọzọ na-agbakwụnye na-eme ka dị iche iche nke latex ntụ ntụ na-eme ka ihe dị iche iche nke latex ntụ ntụ na-eme ka ọrụ nke latex na-amụba na-eme ka mmiri na-arịwanye elu na-eme ka ihe dị iche iche na-emepụta ihe na-eme ka mmiri na-arịwanye elu. viscosity.
A na-ekwenyekarị na usoro nke redispersible latex ntụ ntụ na-eme ka arụ ọrụ nke ngwa ngwa ọhụrụ dịkwuo mma bụ na ntụ ntụ latex, karịsịa colloid na-echebe, nwere njikọ maka mmiri mgbe a gbasasịrị, nke na-eme ka viscosity nke slurry dịkwuo mma ma na-eme ka njikọ nke ngwa agha ahụ dịkwuo mma.
Mgbe emechara ngwa agha ọhụrụ nke nwere uzuzu uzuzu latex, na ntinye mmiri site na isi elu, oriri nke mmeghachi omume hydration, na mgbanwe ikuku, mmiri nke nta nke nta na-ebelata, irighiri resin ji nwayọọ nwayọọ na-abịaru nso, interface ahụ ji nwayọọ nwayọọ na-agbaji, na resin ji nwayọọ nwayọọ na-ejikọta ibe ya. n'ikpeazụ polymerized n'ime ihe nkiri. A na-ekewa usoro mmepụta ihe nkiri polymer n'ime usoro atọ. Na nke mbụ ogbo, polymer ahụ na-agagharị n'enweghị ihe mgbochi n'ụdị Brownian ngagharị na emulsion mbụ. Ka mmiri ahụ na-ekupụ, mmegharị nke ihe ndị ahụ na-emekarị ka ọ dịkwuo mma, na esemokwu dị n'etiti mmiri na ikuku na-eme ka ha jiri nwayọọ nwayọọ kwekọọ ọnụ. Na ọkwa nke abụọ, mgbe ụmụ irighiri ihe na-amalite ịkpọtụrụ ibe ha, mmiri dị na netwọk ahụ na-esi na capillary pụta, na nnukwu esemokwu nke na-etinye aka n'elu ihe ndị ahụ na-eme ka nrụrụ nke oghere latex na-eme ka ha na-ejikọta ọnụ, na mmiri fọdụrụnụ na-ejupụta pores, na ihe nkiri ahụ na-emepụta nke ọma. Nke atọ na nke ikpeazụ na-enyere mgbasa (mgbe ụfọdụ a na-akpọ onwe nrapado) nke polymer ụmụ irighiri ihe nkiri na-aga n'ihu n'ezie. N'oge a na-emepụta ihe nkiri, ụmụ irighiri ihe latex mkpanaka ndị dịpụrụ adịpụ na-ejikọta n'ime usoro ihe nkiri dị gịrịgịrị ọhụrụ nke nwere nrụgide dị elu. N'ụzọ doro anya, ka polymer ntụ ntụ nwee ike ịmepụta ihe nkiri n'ime ngwa agha a na-emegharịghachi, a ghaghị ijide n'aka na opekempe ihe nkiri na-emepụta okpomọkụ (MFT) ga-adị ala karịa okpomọkụ ọgwụgwọ nke ngwa agha ahụ.
Colloid - polyvinyl mmanya ga-ekewapụ na polymer membrane usoro. Nke a abụghị nsogbu na alkaline ciment motar usoro, n'ihi na polyvinyl mmanya ga-saponified site alkali eme site ciment hydration, na adsorption nke quartz ihe ga-eji nwayọọ nwayọọ kewapụ polyvinyl mmanya na usoro, na-enweghị hydrophilic colloid nchebe. , Ihe nkiri a na-emepụta site n'ịgbasa ntụ ntụ latex redispersible, nke na-adịghị edozi na mmiri, nwere ike ọ bụghị nanị na-arụ ọrụ na ọnọdụ akọrọ, kamakwa n'ime mmiri na-emikpu ogologo oge. N'ezie, na-abụghị alkaline usoro, dị ka gypsum ma ọ bụ usoro na naanị fillers, ebe ọ bụ na polyvinyl mmanya ka akụkụ dị adị na ikpeazụ polymer film, nke na-emetụta na mmiri na-eguzogide nke film, mgbe ndị a usoro na-adịghị eji maka ogologo oge mmiri imikpu , na polymer ka nwere àgwà ya n'ibu Njirimara, dispersible polymer ntụ ntụ ka nwere ike iji na usoro ndị a.
Site na nhazi ikpeazụ nke ihe nkiri polymer, a na-emepụta usoro nke mejupụtara inorganic na organic binders n'ime ngwa agha a gwọrọ, ya bụ, ọkpụkpụ na-egbuke egbuke na nke siri ike nke ihe mejupụtara hydraulic mejupụtara, na ntụ ntụ polymer redispersible na-etolite na oghere na elu siri ike. netwọk na-agbanwe agbanwe. A na-eme ka ike nkwụsị na njikọta nke ihe nkiri polymer resin nke ntụ ntụ latex mebere. N'ihi mgbanwe nke polymer, ikike nrụrụ dị elu dị elu karịa usoro siri ike nke nkume ciment, a na-eme ka arụrụ arụ nke ngwa agha dịkwuo mma, na mmetụta nke mgbasawanye nrụgide na-eme ka ọ dịkwuo mma, si otú ahụ na-eme ka nkwụsị nke mgbape nke ngwa agha dịkwuo mma.
Site na mmụba nke ọdịnaya nke ntụ ntụ polymer na-ekesa, usoro ahụ dum na-amalite n'ihu plastik. N'ihe banyere elu ọdịnaya nke latex ntụ ntụ, na polima na-adọ na gwọrọ ngwa agha ji nwayọọ nwayọọ gafere inorganic hydration ngwaahịa frasi, ngwa agha ga-enwe qualitative mgbanwe na-aghọ ihe elastomer, na hydration ngwaahịa nke ciment ga-aghọ a "filler" "The tensile ike, elasticity, mgbanwe na akara Njirimara nke mortarsible polymer gbanwetụrụ na-emeziwanye polymer disperable powder. powders na-enye ohere ka ihe nkiri polymer (ihe nkiri latex) na-etolite ma na-etolite akụkụ nke mgbidi pore, si otú ahụ na-ekpuchi usoro ihe mkpuchi nke ngwa ngwa nke na-eme ka ọkpụkpụ ahụ na-agbatị onwe ya nke na-emetụta ihe mgbagwoju anya na arịlịka ya na ngwa agha ndị a, a na-ejide ngwa agha n'ozuzu ya, si otú ahụ na-eme ka ike dị ike nke ọnụnọ polymer dị elu Usoro maka mmụba nke nrụgide mkpụrụ na ike ọdịda bụ nke a: mgbe a na-etinye ike, microcracks na-egbu oge n'ihi mmụba nke mgbanwe na ngbanwe, ma ghara ịmalite ruo mgbe a ga-enwe nrụgide dị elu. Na mgbakwunye, ngalaba polymer kpara akpa na-egbochikwa njikọta nke microcracks n'ime mgbawa. Ya mere, ntụ ntụ polymer na-ekesa na-abawanye nrụgide ọdịda na ọdịda nke ihe onwunwe.
Ihe nkiri polymer dị na ụrọ a gbanwere polymer nwere mmetụta dị oke mkpa na ike nke ngwa agha ahụ. Polima ntụ ntụ redispersible na-ekesa na interface na-arụ ọrụ ọzọ dị mkpa mgbe a gbasasịrị ma guzobe ya na fim, nke bụ iji mee ka adhesion na ihe ndị dị na kọntaktị. N'ime microstructure nke mpaghara interface n'etiti ụrọ polymer-gbanwetụrụ seramiiki tile bonding ụrọ na tile seramiiki, ihe nkiri ahụ nke polymer guzobere na-etolite akwa mmiri n'etiti taịlị seramiiki vitrified nwere nnabata mmiri dị oke ala na matrix ciment ngwa agha. Ebe a na-akpakọrịta n'etiti ihe abụọ dị iche iche bụ ebe pụrụ iche nwere nnukwu ihe ize ndụ ebe mgbawa na-etolite ma na-eduga na nkwụsị nke ntanye. Ya mere, ike nke ihe nkiri latex iji gwọọ mkpọnwụ mgbawa na-arụ ọrụ dị mkpa na nrapado tile.
N'otu oge ahụ, polymer ntụ ntụ na-agbanwe agbanwe nwere ethylene nwere ihe mgbakwunye a ma ama na ihe ndị dị ndụ, karịsịa ihe ndị yiri ya, dị ka polyvinyl chloride na polystyrene. A ezi ihe atụ nke
Oge nzipu: Ọktoba 31-2022