Ukuze kuthuthukiswe ukonakala kanye nemodulus enwebekayo ephezulu yodaka lukasimende lwendabuko odakeni, ngokuvamile kuyadingeka ukwengeza impushana ye-latex ehlakazeka kabusha njengesithasiselo, esinganikeza udaka lukasimende ukuguquguquka okuhle namandla aqinile.Ukuze umelane futhi ubambezele ukukhiqizwa kokuqhekeka kodaka lukasimende, ngoba i-polymer nodaka lwakha isakhiwo senethiwekhi esingena ngaphakathi, ifilimu ye-polymer eqhubekayo yenziwa ezimbotsheni, eqinisa ukubopha phakathi kwama-aggregates futhi ivimbe izingxenye ku-Pores mortar, ngakho-ke i-modified. udaka emva kokuqina kuye kwathuthukisa kakhulu ukusebenza kunodaka lukasimende.
I-latex powder yakhiwa izinga lokushisa eliphezulu, ukucindezela okukhulu, ukomisa isifutho kanye ne-homopolymerization ngama-micropowder asebenzayo aqinisayo, angathuthukisa kakhulu amandla okubopha kanye namandla aqinile odaka, futhi inomsebenzi omuhle wokwakha wokulwa nokuwa, ukugcinwa kwamanzi nokuqina. , ukumelana namanzi kanye nokumelana neqhwa, ukumelana nokuguga okuhle kakhulu, izithako ezilula, kulula ukuzisebenzisa.I-Xindadi latex powder inokuhambisana okuhle kakhulu nosimende, ingancibilika ngokuphelele kusimende-based dry-mixed mortar paste, ayinciphisi amandla kasimende ngemva kokuphulukiswa, ayigcini nje kuphela ukunamathela okuhle kakhulu, izakhiwo zokwakha ifilimu nokuguquguquka, kodwa futhi inokuhle. Ukumelana nesimo sezulu, ukuzinza, ukusebenza kwesibopho nokumelana nokuqhekeka.Ngemuva kokoma, kungavimbela ngokuphumelelayo ukuguguleka komoya one-asidi odongeni, futhi akulula ukugaya kanye nokudliwa kwe-deliquesce ngemva kokuba manzi.Ingathuthukisa amandla omkhiqizo.Ukwengeza i-latex powder e-redispersible ku-putty powder nodaka kungandisa amandla ayo, futhi kuyasiza kakhulu ukuthuthukisa ubulukhuni.Inokusebenza okuvelele okungangeni manzi, amandla amahle okubopha, futhi ingakhuphula ukunwebeka kodaka futhi ibe nesikhathi esivulekile, futhi inikeze udaka ukumelana okuhle kakhulu kwe-alkali, futhi ingathuthukisa ukunamathela/ukunamathela kanye nokumelana nokuguquguquka kodaka.Ngaphezu kwamandla, ukumelana nokugqoka kanye nokwakhiwa, inokuguquguquka okunamandla kudaka oluphikisana nokuqhekeka.
Uma sikhuluma, impushana ye-latex enezinga lokushisa elishintsha ingilazi elingaphansi kuka-5 ° C iyavumelana nezimo futhi isetshenziswa kakhulu odongeni lwangaphandle lokufakwa odongeni, kanti impushana ye-latex enezinga lokushisa elishintsha ingilazi elingaphezu kuka-10 ° C isetshenziswa kakhulu ekunamathiseleni nasekuzilinganiseni. udaka .
Ngokuya ngokwakhiwa kodaka, ukusebenza kwesicelo sodaka kuzophinde kuthinteke ekushintsheni kwenani elengeziwe le-latex powder ephindwe kabusha: inani elengeziwe le-latex powder eliphindwe kabusha lingaphansi kwe-1%, elinethonya elithile. ekwakhiweni nasekubambeleleni kodaka;Ukwengezwa kwe-latex powder e-redispersible yi-1, 2.0%, okuthuthukisa amandla, ukumelana kwamanzi nokuguquguquka kodaka;ukungezwa kwe-latex powder ehlakazeka kabusha ngu-2.0, 5%, okwenza ifilimu ye-polymer yenethiwekhi odakeni.Ngaphansi kwezimo zezulu ezihlukene kanye nokuxhumana, amandla kanye nokuguquguquka kodaka ngokusobala kuyathuthukiswa.
Endabeni yokuqukethwe okuphezulu kwe-latex powder, isigaba se-polymer odakeni oluphulukisiwe kancane kancane sidlula isigaba somkhiqizo we-inorganic hydration, futhi udaka luba noshintsho lwekhwalithi futhi lube umzimba onwebekayo, kuyilapho umkhiqizo we-hydration kasimende uba "isigcwalisi. ”.Ifilimu elakhiwe impushana ye-latex ehlakazeka kabusha esatshalaliswa kusixhumi esibonakalayo idlala enye indima ebalulekile, okungukuthi, ukuthuthukisa ukunamathela ezintweni okuxhunyanwa nazo, ezifanele izindawo okunzima ukunamathela kuzo, njengokumuncwa kwamanzi aphansi kakhulu noma Okungewona- izindawo ezimuncayo (ezifana nokhonkolo olubushelelezi nezinto ezibonakalayo zikasimende, amapuleti ensimbi, izitini ezilinganayo, izindawo zezitini eziqinile, njll.) kanye nezindawo zezinto eziphilayo (njengamabhodi e-EPS, amapulasitiki, njll.) kubaluleke kakhulu.Ngoba ukuhlangana kwento nge-meta-mechanical adhesive kufinyelelwa ngomgomo wokushumeka ngomshini, okungukuthi, i-hydraulic slurry ingena ezikhaleni zezinye izinto, iqina kancane kancane, futhi ekugcineni ibambe udaka njengokhiye oshunyekwe kukhiye. .Ebusweni bezinto ezibonakalayo, endaweni engenhla eqinile-kuya-isibopho, ngenxa yokungakwazi ukungena ngokuphumelelayo kumpahla ukuze kwakhiwe ukushumeka okuhle kwemishini, udaka olunama-adhesive we-inorganic kuphela aluxhunyiwe ngokuphumelelayo kulo, futhi i-electron. Ukubuka nge-microscope nakho kuhle kakhulu.Kuyakufakazisa.Indlela yokubopha yama-polymers ihlukile.Ama-polymers abopha ubuso bezinye izinto ngamandla e-intermolecular, ngaphandle kwe-porosity yendawo (yebo, indawo eqinile kanye nokwanda kokuxhumana kuzothuthukisa amandla okubopha) , okusobala kakhulu endabeni ye-organic substrates, futhi ukubhekwa kwezibonakhulu zama-electron nakho kufakazela ukuphakama kwamandla ayo okunamathelayo.
I-latex powder ishintsha ukuhambisana nokushelela kwesistimu esimweni esimanzi sokuxuba, futhi ukuhlangana kuthuthukiswa ngokungeza i-latex powder.Ngemuva kokumisa, inikeza ungqimba lwangaphezulu olubushelelezi nominyene ngamandla ahlangene, futhi ithuthukisa umphumela wokusebenzisana kwesihlabathi, amatshe kanye nama-pores., ethuthukisiwe ibe ifilimu esibonakalayo, okwenza i-adhesive tile iguquguquke, inciphisa i-elastic modulus, idonsa ukucindezeleka kokushintsha okushisayo ngezinga elikhulu, futhi inokumelana namanzi esigabeni sakamuva, futhi izinga lokushisa le-buffer kanye nokuguqulwa kwezinto ezibonakalayo akuhambisani. .Ukuvumelana nezimo kanye nokuqina kwe-latex powder ngokuvamile kungahlulelwa ngokusho kwezinga lokushisa lokushintsha kwengilazi.Uma izinga lokushisa lokushintsha kwengilazi lingaphansi kwamadigri angu-0, livumelana nezimo.Iluphi uhlobo lwe-latex powder oludingekayo odakeni ngokuvamile lunqunywa ngokuvumelana nezici zokusebenza komkhiqizo.Ukunamathiswa kwethayela kudinga ukusebenzisa i-latex powder ngokunamathela okungcono.
Isikhathi sokuthumela: Mar-14-2023