Izimpushana ze-polymer ezihlakazeka kabushaama-emulsion omisiwe ngokufuthwa okuthi, lapho exutshwe namanzi noma amanzi odakeni, akhe ukuhlakazeka okuzinzile okufanayo ne-emulsion yasekuqaleni. I-polymer yakha uhlaka lwenethiwekhi ye-polymer odakeni, olufana nezakhiwo ze-polymer emulsion futhi luguqula udaka. Isici se-polymer powder ehlakazekayo ukuthi le powder ingahlakazwa kanye kuphela, futhi ngeke iphinde ihlakazeke lapho udaka luba manzi futhi ngemva kokuqina. Ukusungulwa kwe-polymer powder ehlakazeka kabusha kuye kwathuthukisa kakhulu ukusebenza kwe-powder mortar eyomile. Odakeni oluhlanganisayo lwamaphaneli okuhlobisa, kunezidingo ezengeziwe zenani le-polymer latex powder elihlakazeka kabusha. Ukwengezwa kwayo kuthuthukisa amandla okuguquguquka, ukumelana nokuqhekeka, amandla okunamathela, ukuqina nokuqina kodaka, okungagwenywa. Ukuncipha kodaka kanye nokuqhekeka nakho kunganciphisa ukushuba kongqimba oluyisibopho. I-polymer latex powder ehlakazeka kabusha ingathuthukisa izici ezingenhla zodaka ngoba ingakha ifilimu ye-polymer ebusweni bezinhlayiya zodaka. Kukhona ama-pores ebusweni befilimu, futhi ubuso be-pores bugcwele udaka, okunciphisa ukuhlushwa kokucindezeleka futhi kunciphisa amandla angaphandle. Ngaphansi kwesenzo kuzokhiqiza ukuphumula ngaphandle kokulimala. Ngaphezu kwalokho, udaka lwakha uhlaka lwamathambo oluqinile ngemva kokufakwa kukasimende, futhi ifilimu eyakhiwe i-polymer ingathuthukisa ukunwebeka nokuqina kohlaka lwamathambo aqinile, futhi impushana ye-latex ye-polymer ehlakazeka kabusha ingathuthukisa amandla aqinile odaka.
Umphumela wokugcoba phakathi kwezinhlayiya ze-polymer powder ezihlakazeka kabusha wenza izingxenye zodaka zigeleze ngokuzimela. Ngesikhathi esifanayo, inomphumela we-inductive emoyeni, enikeza ukucindezelwa kodaka, ngakho-ke ingathuthukisa ukwakhiwa nokusebenza kodaka. Amandla okucindezela odaka lwe-polymer ayancipha ngokunyuka kokuqukethwe kwe-rubber powder, amandla aguquguqukayo akhula ngokunyuka kokuqukethwe kwe-rubber powder, futhi isilinganiso sokugoqa sokucindezela sibonisa ukuthambekela okwehla.
Ukuhlolwa kubonisa ukuthi i-latex powder ehlakazeka kabusha ingashintsha udaka futhi ngokusobala ingathuthukisa ukuguquguquka kodaka. I-latex powder polymer resin ehlakazeka kabusha ingathuthukisa amandla okuguquguquka kodaka, ikakhulukazi amandla okuqala okuguquguquka odaka. I-polymer ihlanganisa ezimbotsheni ze-capillary zodaka oluqinile futhi isebenza njengokuqiniswa. Ukwengezwa kwezimpushana ze-polymer ezihlakazekayo kungathuthukisa kakhulu amandla ebhondi odaka, ikakhulukazi lapho kuhlanganiswa izinto ezihlukene, njengokunamathela kwamathayili e-ceramic. Ngokukhula kwenani le-powder yerabha, amandla aguquguqukayo namandla okunamathela nawo ayanda.
Ukufaka i-polymer powder e-redispersible kungathuthukisa kakhulu ukuguquguquka okungokwemvelo kanye nokumelana nokuguquguquka kwezinto, ngakho-ke kunomthelela emandleni aguquguqukayo namandla okubopha kwezinto. Ngemuva kokwengeza i-polymer ku-matrix kasimende, amandla okuqina azothuthukiswa kakhulu. Ngesikhathi sokuqina kukasimende, kuzoba nezimbotshana eziningi ngaphakathi. Lezi zimbobo zigcwele amanzi ekuqaleni. Lapho usimende welapheka futhi womiswa, lezi zingxenye ziba imigodi. Ngokuvamile kubhekwa ukuthi lezi zimbobo zingamaphuzu abuthakathaka we-matrix ye-cement. ingxenye. Lapho i-polymer powder ehlakazeka kabusha iqukethwe ohlelweni lukasimende, lezi zimpushana zizohlakazeka ngokushesha futhi zigxile endaweni enamanzi amaningi, okungukuthi, kule migodi. Ngemva kokuba amanzi omile. I-polymer yenza ifilimu ezungeze imigodi, ngaleyo ndlela iqinise la maphuzu abuthakathaka. Okusho ukuthi, ukwengeza inani elincane le-latex powder elihlakazeka kabusha kungathuthukisa kakhulu amandla esibopho.
Isikhathi sokuthumela: Oct-25-2022