Ama-polymer powders asakuhlupha ama-emulsions omiswe isifutho, lapho exutshwe namanzi noma amanzi owesimende, akha ukuhanjiswa okufanayo okuzinzile njenge-emulsion yasekuqaleni. I-polymer yakha isakhiwo senethiwekhi ye-polymer ku-datara, okufana nezakhiwo ze-polymer emulsion futhi iguqule udaka. Isimo se-distmerble polymer powder ukuthi le mpuphu ingahlakazwa kanye kuphela, futhi ngeke ihlakazeke lapho kubuye khona udaka ngemuva kokuqina. Ukusungulwa kwe-polymer evuselelayo ye-polymer sekuthuthukise kakhulu ukusebenza kodaka owomile lwempuphu. Ku-Bonding Gunar ngamaphaneli wokuhlobisa, kunezidingo eziningi zenani le-polymer evuselelayo ye-polymer latex. Isengezo sayo kuthuthukisa amandla aguqukayo, ukumelana nokuqhekeka, amandla okunamathela, ukuqina nokuqina kodaka, okungagwenywa. I-Mortur shrinkage kanye nokuqhekeka kunganciphisa futhi ubukhulu bengqimba ebondiwe. I-polym evuselelayo ye-polym ye-polyx ingathuthukisa izakhiwo ezingenhla zodaka ngoba ingakha ifilimu le-polymer ebusweni bezinhlayiya zodaka. Kukhona ama-pores ebusweni befilimu, futhi ingaphezulu lama-pores ligcwele ngodaka, olunciphisa ukugxila kwengcindezi futhi lunciphise amandla angaphandle. Ngaphansi kwesenzo kuzoveza ukuphumula ngaphandle komonakalo. Ngaphezu kwalokho, udaka wakha i-skeleton eqinile ngemuva kokwenza i-permer hydration, futhi ifilimu elakhiwa yi-polymer lingathuthukisa ukuqina nokuqina kwe-skeleton eqinile, ne-polymer latex powder nayo ingathuthukisa amandla ashubile odaka.
Umphumela wokuthambeka phakathi kwezinhlayiya ze-polymer powder evuselelayo wenza izakhi zodaka ukuba zigeleze ngokuzimela. Ngasikhathi sinye, inomphumela oqondile emoyeni, inikeze ukucindezelwa kodaka, ngakho-ke kungathuthukisa ukwakhiwa nokusebenza kodaka. Amandla acindezelayo odaka lwe-polymer ancipha ngokwanda kokuqukethwe kwe-ruble powder, amandla aguqukayo anda ngokuqukethwe kokuqukethwe kwe-rubber powder, kanye nesilinganiso sokugoqa okusondelana kukhombisa umkhuba ongezansi.
Ukuhlolwa kukhombisa ukuthi i-latex tablex evuselelayo ingashintsha udaka futhi ngokusobala ingathuthukisa ukuguquguquka kodaka. I-Latex Powder Powter Resin evuselelayo ye-resin ingathuthukisa amandla aguqukayo odaka, ikakhulukazi amandla okuqala aguqukayo odaka. Ama-polymer agregates ezinhlakeni zama-capillary zodaka olukhuni futhi zenza ukuqiniswa. Ukungezwa kwama-polymer powders angakwazi ukwenza ngcono kakhulu ama-bond amandla odonga, ikakhulukazi lapho kuhlanganisa izinto ezahlukene, njengokunamathela amathayili e-ceramic. Ngokunyuka kwenani lempuphu yenjoloba, amandla aguqukayo namandla anamathela kuyanda.
Ukufaka i-polymer popular popular kungathuthukisa kakhulu ukuguquguquka okungokwemvelo nokumelana nokuqukethwe okuqukethwe, ngakho-ke kusiza emandleni aguqukayo namandla okubopha okuqukethwe. Ngemuva kokungeza i-polymer ku-matrix kasimende, amandla ashukumisayo azothuthukiswa kakhulu. Ngesikhathi senqubo enzima kasimende, kuzoba nemibandela eminingi ngaphakathi. Lezi zimpahla zigcwele amanzi ekuqaleni. Lapho usimende ukhamule futhi omisiwe, lezi zingxenye ziba yimithambo. Ngokuvamile kucatshangelwa ukuthi le mikhumbi iyindawo ebuthakathaka ye-matrix kasimende. ingxenye. Lapho i-powder evuselelekayo ye-polymer itholakala ohlelweni lukasimende, la mapondo azohlakazeka ngokushesha futhi agxile endaweni ecebile ngamanzi, okungukuthi, kule mikhakha. Ngemuva kokuba amanzi eyomile. I-polymer yakha ifilimu ezungeze imithambo, ngaleyo ndlela iqinise lawa maphuzu abuthakathaka. Okungukuthi, engeza inani elincane le-latex powder evuselelekayo lingathuthukisa kakhulu amandla e-bond.
Isikhathi sePosi: Feb-20-2025