Izakhiwo ezibonakalayo zempushana ye-latex ehlakazeka kabusha

I-Redispersible polymer powder (RDP) iyimpushana ye-polymer esebenza kahle kakhulu esetshenziswa kabanzi ekwakheni, ekuhlanganiseni nakwezinye izimboni.Yenziwa ngokuhlakaza i-emulsion ye-polymer emanzini, bese yomisa ukwenza impushana.Impushana ingaphinde ihlakazwe kalula emanzini ukuze yakhe i-emulsion ezinzile, iyenze i-polymer eguquguqukayo.

Izici ezibonakalayo ze-RDP zidlala indima ebalulekile ekusebenzeni kwayo nasekufanelekeni kwezinhlelo zokusebenza ezahlukene.Kulesi sihloko, sizoxoxa ngezinto ezibonakalayo ezihlukahlukene ze-RDP nokuthi kungani zibalulekile.

Usayizi Wezinhlayiyana Nokusabalalisa

Usayizi wezinhlayiyana kanye nokusatshalaliswa kwe-RDP kunquma ukuguquguquka kwayo nokuba lula kokuphatha.Usayizi wezinhlayiyana ezincane, ngcono uketshezi.Izimpushana ze-RDP zijwayele ukusebangeni le-micron engu-5-200 futhi zinokusatshalaliswa kosayizi wezinhlayiyana ezincane.Ukusabalalisa usayizi wezinhlayiyana ezifanayo kuqinisekisa ukuthi impushana ihlakazeka kalula emanzini futhi inikeza i-emulsion ezinzile.

Ukuminyana ngobuningi

Ukuminyana ngobuningi kuyisisindo se-RDP ngeyunithi ngayinye.Ukuminyana ngobuningi bempushana ye-RDP kuthinta ukugcinwa nokuhamba kwayo.Ukuminyana kwenqwaba ephansi kusho ivolumu eyengeziwe ngesisindo esifanayo futhi kudinga indawo yokugcina eyengeziwe.Ngakolunye uhlangothi, ukuminyana kwenqwaba ephezulu kusho inqwaba encane yesisindo esifanayo futhi kudinga indawo yokugcina encane.

Ukuminyana kwenqwaba ye-RDP kuyehluka ngohlobo, ibanga nokwakheka.Ibanga layo liyi-200-700 kg/m3.Ngokuvamile, ukuminyana kwenqwaba kuyafiswa ukuze kube lula ukuphatha nokuthutha.

okuqukethwe kwamanzi

Okuqukethwe kwamanzi kuyisici esibalulekile se-RDP njengoba kuthinta ukuqina kwayo kokugcina, ukuhlakazeka kanye nezakhiwo zokwenza amafilimu.Okuqukethwe kwamanzi kungase kwehluke kuye ngenqubo yokukhiqiza, izimo zokugcinwa kanye nokwakheka.Ngokuvamile, okuqukethwe kwamanzi ku-RDP kuhluka kusuka ku-1-3%, ukugcina okuqukethwe kwamanzi kuphansi ukuze kuthuthukiswe ukuzinza kwesitoreji se-powder.

Izakhiwo zokwakha ifilimu

I-RDP ivame ukusetshenziswa njengento enamathelayo noma enamathelayo ekwakheni nasekufakeni izicelo.Izakhiwo zayo zokwenza ifilimu, njengokunamathela, ukubumbana, nokuguquguquka, zibalulekile ekunqumeni ukufaneleka kwayo kwezinhlelo zokusebenza ezihlukahlukene.

Izakhiwo zokwakha ifilimu ze-RDP zincike ohlotsheni lwe-polymer esetshenzisiwe, uhlobo lwe-emulsifier kanye nokugxilwa kwe-polymer.Ama-RDP aklanyelwe ukuhlinzeka ngezici ezithile zokwenza ifilimu ukuze ahlangabezane nezidingo zezinhlelo zokusebenza ezahlukene.

ukuhlakazeka kabusha

I-Redispersibility isho ikhono le-RDP lokwenza i-emulsion ezinzile lapho ingezwe emanzini ngemva kokoma.Lesi sici sibalulekile ezinhlelweni eziningi njengoba sivumela ukuphatha nokuxutshwa kalula.

Ukuhlakazeka kabusha kwe-RDP kuncike ohlotsheni kanye nekhwalithi ye-emulsifier esetshenziselwa inqubo yokukhiqiza kanye nezimo zokugcina zempushana.Izimpushana ze-RDP zingaba nezindawo ezihlukene zokuhlakazeka kabusha ezisukela cishe ngokushesha ukuya emaminithini.

i-viscosity

I-viscosity isilinganiso sokumelana kwempahla ukugeleza.I-viscosity ye-emulsion ye-RDP ithinta izici zayo zokusebenza ezifana nokusabalala, ukulinganisa kanye nokumanzisa.Ama-viscosity aphezulu ahlinzeka ngokwakheka kwefilimu engcono nokuzinza, kodwa angenza izinhlelo zokusebenza zibe inselele kakhulu.

I-viscosity ye-emulsions ye-RDP incike ekugxilweni kwe-polymer, uhlobo lwe-emulsifier nokwakhiwa.Ingasukela kokuphansi kuye phezulu, kuye ngezidingo zohlelo lokusebenza.

Ekuphetheni

Sengiphetha, izici ezibonakalayo ze-RDP zidlala indima ebalulekile ekusebenzeni kwayo nasekusebenzeni kwayo.Usayizi wezinhlayiya, ukuminyana kwenqwaba, okuqukethwe kwamanzi, ukwakheka kwefilimu, ukuhlakazeka kabusha kanye ne-viscosity yizici ezibonakalayo eziyisisekelo ze-RDP.Ngokuqonda lezi zici, abakhiqizi bangalungisa i-RDP yezinhlelo zokusebenza ezithile ukuze kuhlangatshezwane nezidingo zamakhasimende ezihlukene.I-RDP ithathwa njengenye yezimpushana ze-polymer eziguquguqukayo nezisebenza kahle kakhulu, okuyenza ilungele izimboni eziningi ezihlanganisa ezokwakha, okokunamathela kanye nezinamatheliso.