Ukuze kuphuculwe i-brittleness kunye nemodyuli ephezulu enwebekayo yodaka lwesamente yemveli eludaka, kudla ngokuba yimfuneko ukongeza i-latex powder ephinda-phindanelekayo njengesongezo, esinokunika udaka lwesamente ukuguquguquka okuhle kunye namandla okuqina.Ukuxhathisa kunye nokulibazisa ukuveliswa kodaka lwesamente iintanda, ngenxa yokuba i-polymer kunye nodaka lwakha i-interpenetrating network structure, ifilimu yepolymer eqhubekayo yenziwa kwi-pores, eqinisa ukudibanisa phakathi kwee-aggregates kunye neebhloko iindawo kwi-Pores yodaka, ngoko i-modified. udaka emva kokuqina kuye kwaphucula kakhulu ukusebenza kunodaka lwesamente.
I-latex powder yenziwa bubushushu obuphezulu, uxinzelelo oluphezulu, ukomiswa kokutshiza kunye ne-homopolymerization ngeendlela ezahlukeneyo zokuqinisa i-micropowder, ezinokuphucula kakhulu amandla okudibanisa kunye namandla okuqina odaka, kwaye inomsebenzi olungileyo wolwakhiwo wokuchasana nokuwa, ukugcinwa kwamanzi kunye nokuqina. , ukuxhathisa kwamanzi kunye nokumelana ne-freeze-thaw , Ukumelana nokuguga okugqwesileyo kobushushu, izithako ezilula, kulula ukuyisebenzisa.I-Xindadi latex powder inokuhambelana okugqwesileyo kunye nesamente, inokunyibilika ngokupheleleyo kwi-samente-based dry-mixed mortar paste, ayinciphisi amandla esamente emva kokunyanga, ayigcini nje ukunamathela okugqwesileyo, iipropati zokwenza ifilimu kunye nokuguquguquka, kodwa ikwanazo ezintle. Ukumelana nemozulu, ukuzinza, ukusebenza ngokubambisana kunye nokumelana nokuqhekeka.Emva kokumisa, kunokuthintela ngokufanelekileyo ukukhukuliseka komoya one-asidi eludongeni, kwaye akulula ukuyicoca kunye ne-deliquesce emva kokuba imanzi.Inokunyusa amandla emveliso.Ukongeza i-latex powder ehlaziywayo kwi-putty powder kunye nodaka kunokunyusa amandla ayo, kwaye kunceda kakhulu ukuphucula ubulukhuni.Inomsebenzi obalaseleyo wokungangeni manzi, ukomelela okuhle kokubopha, kunokonyusa ukuqina kodaka kwaye ibe nexesha elide elivulekileyo, kwaye inike udaka ngokuxhathisa okugqwesileyo kwe-alkali, kwaye inokuphucula ukuncamathela / ukuncamathela kunye nokuxhathisa okuguquguqukayo kodaka.Ukongeza kumandla, ukuxhathisa ukunxiba kunye nokwakhiwa, inokuguquguquka okunamandla kwi-flexible anti-cracking mortar.
Ukuthetha ngokwethiyori, i-latex powder eneqondo lobushushu leglasi elingaphantsi kwe-5 ° C ibhetyebhetye ngakumbi kwaye isetyenziswa ikakhulu kudaka lwangaphandle lokugquma eludongeni, kunye nomgubo welatex oneqondo lobushushu leglasi ngaphezulu kwe-10 ° C isetyenziswa ikakhulu kwi-adhesives kunye nokuzilinganisa. udaka .
Ngokuxhomekeke ekubunjweni kodaka, ukusebenza kwesicelo sodaka kuya kuchaphazeleka kwakhona ngotshintsho lwemali eyongezelelweyo ye-latex powder edibeneyo: inani elongezelelweyo le-latex powder edibeneyo ingaphantsi kwe-1%, enempembelelo ethile. ekwakhiweni nasekubambeleleni kodaka;Ukongezwa kwe-latex powder ehlaziywayo yi-1, 2.0%, ephucula amandla, ukuchasana kwamanzi kunye nokuguquguquka komdaka;ukongezwa komgubo we-latex owenziwe kwakhona yi-2.0, i-5%, eyenza ifilimu ye-polymer yenethiwekhi kumdaka.Ngaphantsi kwemozulu eyahlukeneyo kunye nokunxibelelana, amandla kunye nokuguquguquka kodaka ngokucacileyo kuphuculwe.
Kwimeko yomxholo we-latex ephezulu yomgubo, inqanaba lepolymer kudaka olunyangisiweyo ngokuthe ngcembe lidlula isigaba semveliso ye-inorganic hydration, kwaye udaka lwenzeka utshintsho olusemgangathweni kwaye lube ngumzimba olulastiki, ngelixa imveliso ye-hydration yesamente iba "isigcwalisi. ”.Ifilim eyenziwe ngumgubo welatex odispersible osasazwe kwi-interface idlala enye indima ephambili, oko kukuthi, ukomeleza ukuncamathela kwizinto eziqhagamshelweyo, ezilungele imiphezulu enzima ukuncamathela, njengokufunxa amanzi aphantsi kakhulu okanye okungeyo- imiphezulu efunxayo (efana nekhonkrithi egudileyo kunye nesiseko semathiriyeli yesamente, iipleyiti zentsimbi, izitena ezilinganayo, umgangatho wezitena eziqinileyo, njl.njl.) kunye nomphezulu wezinto eziphilayo (ezifana neebhodi ze-EPS, iiplastiki, njl. njl.) zibaluleke kakhulu.Ngenxa yokuba ukudityaniswa kwezinto nge-adhesive ye-meta-mechanical kufezekiswa ngomgaqo wokufakela oomatshini, oko kukuthi, i-hydraulic slurry ingena kwizithuba zezinye izinto, ngokuthe ngcembe iqina, kwaye ekugqibeleni ibambe udaka njengesitshixo esifakwe kwisitshixo. .Kumphezulu wezinto eziphathekayo, kulo mhlaba ungasentla kunzima uku-bond, ngenxa yokungakwazi ukungena ngokufanelekileyo kwizinto ukwenza ukufakelwa komatshini okulungileyo, udaka olunezincamathelisi ezingaphiliyo aludityaniswanga ngokufanelekileyo kulo, kunye ne-electron. Ukuphononongwa ngemicroscope nako kuhle kakhulu.Iyayingqina loo nto.Indlela yokudibanisa iipolymers yahlukile.I-polymers ibhondi kunye nomphezulu wezinye izinto nge-intermolecular forces, ezizimeleyo kwi-porosity yomhlaba (ngokuqinisekileyo, indawo enqabileyo kunye nokwanda koqhagamshelwano kuya kuphucula amandla okudibanisa) , ecacileyo ngakumbi kwimeko ye-organic substrates, kwaye ukuqwalaselwa kwee-electron microscopes nako kubonisa ukongama kwamandla ayo okuncamathelisa.
I-latex powder iguqula ukuhambelana kunye ne-slipperiness yenkqubo kwimeko yokuxuba okumanzi, kwaye ukudibanisa kuphuculwe ngokudibanisa i-latex powder.Emva kokumisa, inika umaleko ogudileyo kunye noxineneyo womphezulu ngamandla adibeneyo, kwaye iphucula isiphumo sojongano lwesanti, igrabile kunye neepores., ityetyiswe kwifilimu kwi-interface, eyenza i-adhesive tile iguquguquke ngakumbi, iyanciphisa i-elastic modulus, ithatha uxinzelelo lwe-thermal deformation ukuya kwinqanaba elikhulu, kwaye inokumelana kwamanzi kwinqanaba elilandelayo, kunye nokushisa kwe-buffer kunye nokuguqulwa kwezinto eziphathekayo azihambelani. .Ukuguquguquka kunye nokuqina kwe-latex powder ngokuqhelekileyo kunokugwetywa ngokweqondo lokushisa lokutshintsha kweglasi.Ukuba iqondo lokushisa lokutshintsha kweglasi lingaphantsi kwe-0 degrees, liguquguquka ngakumbi.Luluphi uhlobo lwe-latex powder olufunekayo kwi-mortar lunqunywe ngokubanzi ngokweempawu zokusebenza zemveliso.I-adhesive ye-tile idinga ukusebenzisa i-latex powder kunye ne-adhesion engcono.
Ixesha lokuposa: Mar-14-2023