Na-ekesa polymer ntụ ntụ na ndị ọzọ inorganic adhesives (dị ka simenti, slaked wayo, gypsum, ụrọ, wdg) na dị iche iche aggregates, fillers na ndị ọzọ mgbakwunye [dị ka hydroxypropyl methylcellulose, polysaccharide (starch ether), fiber Fiber, wdg] bụ anụ ahụ. agwakọta ka ọ mee ngwa ngwa agwakọta akọrọ. 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. Ngwakọta nke ntụ ntụ roba dị iche iche, nke nwere mmetụta na rheology nke ngwa agha na ihe ndị dị iche iche na-ewu ụlọ: njikọ nke latex ntụ ntụ maka mmiri mgbe a na-emegharị ya, dị iche iche viscosity nke latex ntụ ntụ mgbe mgbasa, mmetụta dị na mmiri. Ọdịnaya ikuku nke ngwa agha na nkesa nke afụ, Mmekọrịta dị n'etiti ntụ ntụ roba na ihe mgbakwunye ndị ọzọ na-eme ka powders latex dị iche iche nwee ọrụ nke ịba ụba nke mmiri, ịba ụba thixotropy, na ịba ụba. 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 mmiri dịkwuo mma. ngwa agha ihe owuwu.
Mgbe emechara ngwa agha ọhụrụ nke nwere uzuzu latex, na ntinye mmiri site na isi ala, oriri nke mmeghachi omume hydration, na mgbanwe ikuku, mmiri nke nta nke nta na-ebelata, irighiri resin nke nta nke nta na-abịarute, interface ahụ ji nwayọọ nwayọọ na-ama jijiji. , na resin nke nta nke nta 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. N'okwu nke abụọ, mgbe ụmụ irighiri ihe na-amalite ịkpọtụrụ ibe ha, mmiri dị na netwọk ahụ na-esi na capillary na-ekpochapụ, na nnukwu mgbagwoju anya nke a na-etinye n'elu ihe ndị ahụ na-eme ka nrụrụ nke oghere latex na-eme ka ha jikọta ọnụ, na mmiri fọdụrụnụ na-ejupụta pores, a na-emepụta ihe nkiri ahụ nke ọma. Oge nke atọ na nke ikpeazụ na-enyere mgbasa ozi (mgbe ụfọdụ a na-akpọ njide onwe onye) nke mkpụrụ ndụ polymer ka ọ bụrụ 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 mortar system, 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 usoro ndị na-abụghị alkaline, dị ka gypsum ma ọ bụ usoro nwere nanị ihe ndị na-emepụta ihe, ebe ọ bụ na mmanya polyvinyl ka dị n'ime ihe nkiri polymer ikpeazụ, nke na-emetụta nkwụsị mmiri nke ihe nkiri ahụ, mgbe a naghị eji usoro ndị a eme ihe maka mmiri ogologo oge. imikpu , na polima ka nwere njirimara n'ibu ya, polymer ntụ ntụ ka nwere ike iji mee ihe 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, arụ ọrụ nrụrụ nke ngwa agha na-eme ka ọ dịkwuo mma, na mmetụta nke nrụgide na-agbasasị na-eme ka ọ dịkwuo mma, si otú ahụ na-eme ka nkwụsị mgbawa nke ngwa agha ahụ dịkwuo mma. .
Site na mmụba nke ọdịnaya nke ntụ ntụ polymer na-ekesa, usoro ahụ dum na-amalite n'ihu plastik. N'ihe banyere ọdịnaya dị elu nke ntụ ntụ latex, usoro polymer n'ime ngwa agha a gwọrọ nke ọma na-eji nwayọọ nwayọọ gafere ngwaahịa hydration inorganic, ngwa agha ahụ ga-enwe mgbanwe qualitative ma ghọọ elastomer, na ngwaahịa hydration nke ciment ga-aghọ "filler" ". Ike nkwụsịtụ, nhịahụ, mgbanwe na njirimara akara nke ngwa agha gbanwetụrụ na ntụ ntụ polymer na-agbasasasị ka emelitere. Incorporation nke dispersible polymer powders na-enye ohere a polymer film (latex film) etolite na-etolite akụkụ nke pore mgbidi, si otú akara nke ukwuu porous Ọdịdị nke ngwa agha. Akpụkpọ anụ latex nwere usoro ịgbatị onwe ya nke na-etinye esemokwu na arịlịka ya na ngwa agha ahụ. Site na ike ndị a dị n'ime, a na-ejide ngwa agha ahụ n'ozuzu ya, si otú ahụ na-abawanye ike njikọta nke ngwa agha ahụ. Ọnụnọ nke ndị na-emepụta ihe na-agbanwe agbanwe na nke ukwuu na-agbanwe agbanwe na-eme ka mgbanwe na ngbanwe nke ngwa agha dịkwuo mma. 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 nrụgide dị elu ruru. 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