Redispersible polymer powder ingenye yezinto ezisetshenziswa kakhulu ekwakheni nakwezinye izimboni. Ukuguquguquka kwayo, ukusebenza kahle kanye nomnotho kuyenza ibe ukukhetha okudumile ezinhlelweni eziningi. Kodwa-ke, ngezinketho eziningi ongakhetha kuzo, kungaba inselele kubasebenzisi ukuhlonza nokukhetha umkhiqizo ofanele izidingo zabo. Kulesi sihloko, sidingida izici ezibalulekile okufanele zicatshangelwe ngaphambi kokukhetha impushana ye-polymer ehlakazeka kabusha.
1. Ukuqonda ama-Polymer Powder aphinde ahlakazeka
I-polymer powder e-redispersible iyimpushana eyomile etholakala ngokufafaza ama-emulsion e-polymer ahlukahlukene kuma-organic solvents aguquguqukayo bese yomiswa ngaphansi kwezimo ezithile. I-polymer powder e-redispersible ikakhulukazi yakhiwe ngezinto eziyisisekelo ze-polymer, i-binder esebenzayo, i-plasticizer ne-inorganic filler. Ngokuyinhloko isetshenziswa njenge-binder, ifilimu yangaphambili kanye ne-thickener ezinhlelweni ezahlukene ezifana ne-cement kanye ne-gypsum based materials, izinhlelo zokuvimbela amanzi kanye nodaka.
2. Ukwakheka kwempushana ye-polymer ehlakazeka kabusha
Ngokuyisisekelo, ukwakheka kwempushana ye-polymer ehlakazeka kabusha kuyisici esibalulekile esithinta izakhiwo zempushana kanye nokufaneleka kwayo ekusetshenzisweni okuhlosiwe. Ngakho-ke, ukwakheka kwamakhemikhali e-polymer kufanele kucatshangelwe ngaphambi kokukhetha umkhiqizo. Ama-polymer amaningi ahlakazeka kabusha asekelwe ku-ethylene vinyl acetate (EVA) kanye ne-vinyl acetate ethylene (VAE), enezakhiwo nezinzuzo ezahlukene.
I-EVA redispersible polymers iguquguquka kakhulu, ithuthukisa ukunwebeka komkhiqizo wokugcina, futhi ihlinzeka ngokunamathela okuhle kakhulu kanye nokumelana nesimo sezulu. Ngakolunye uhlangothi, ama-polymers ahlakazeka kabusha e-VAE anamandla aphezulu futhi amelana kangcono namanzi kune-EVA polymers, okuwenza afanelekele ukusetshenziswa kwangaphandle. Ama-Acrylic polymers anezinga eliphakeme lokunamathela kanye nokuhambisana nezinye izinto zokwakha.
3. Izinto ezibonakalayo ze-polymer powder ehlakazeka kabusha
Izakhiwo ezingokoqobo zezimpushana ze-polymer ezihlakazeka kabusha kufanele ziqondwe kahle ngaphambi kokwenza ukukhetha okudingekayo. Lezi zakhiwo zihlanganisa ukusabalalisa usayizi wezinhlayiyana, isicwebezelisi, umbala kanye nokuminyana kwenqwaba yempushana. Lezi zici zithinta ukusebenza, ukucutshungulwa nokubukeka komkhiqizo wokugcina.
Ukusatshalaliswa kosayizi wezinhlayiyana zempushana ye-polymer ehlakazeka kabusha kubalulekile njengoba kunquma izinga layo lokuhlakazeka ku-substrate. Ukulawula ngokucophelela usayizi wezinhlayiyana ngesikhathi sokukhiqiza kubalulekile ekuqinisekiseni izakhiwo ezibonakalayo eziyimpushana. Ukuminyana ngobuningi bempushana kuthinta ukugcinwa kwayo, ukuthuthwa kanye nokuphathwa kwayo.
4. Ubuchwepheshe bokufaka isicelo
Inqubo yokukhetha izimpushana ze-polymer ezihlakazeka kabusha kufanele icabangele ubuchwepheshe obuhlosiwe bokufaka isicelo. Uhlobo ngalunye lwempushana ye-polymer ehlakazeka kabusha lunezici ezihlukile ezenza ezinye izimpushana zifaneleke kangcono kumasu athile ohlelo kunamanye. Isibonelo, izimpushana ezine-viscosity ephansi zifaneleka kangcono ekusetshenzisweni kwesifutho, kuyilapho izimpushana ezine-viscosity ephezulu zingadinga ukudonsa ngesandla.
5. Ukuhambisana kwe-polymer powder ehlakazeka kabusha nezinye izinto
Ukuhambisana kuwukucatshangelwa okubalulekile lapho kukhethwa impushana ye-polymer ehlakazeka kabusha efanele. Ngaphambi kokukhetha i-powder ethile, kubalulekile ukuhlola ukuhambisana kwayo nezinye izinto ezisetshenziswa kumkhiqizo wokugcina, isibonelo, i-powder ekhethiwe kufanele ihlanganiswe ngaphandle komthungo nosimende nezinye izibophezelo.
6. Izidingo zokusebenza
Izici ezifiswayo zomkhiqizo wokugcina zinquma ukukhethwa kwempushana ye-polymer ehlakazeka kabusha efanele. Kuyadingeka ukucacisa izici ezibonakalayo namakhemikhali zezimpushana ze-polymer ezihlakazeka kabusha, okuhlanganisa ukungezwani kobuso, i-pH, izinga lokushisa lokushintsha kwengilazi, kanye nemodulus yokunwebeka.
Ukuhlonza nokukhetha izimpushana ze-polymer ezihlakazeka kabusha ezifanele kuyinqubo ebalulekile okufanele icabangele ukwakheka kwamakhemikhali ayimpuphu, izici ezibonakalayo, amasu okusebenza, ukuhambisana kanye nezidingo zokusebenza. Izinto okufanele zicatshangelwe zihlanganisa ukusatshalaliswa kosayizi wezinhlayiyana, ukuminyana ngobuningi kanye nokucwebezela. Okokugcina, kubalulekile ukukhomba izakhiwo ezifanele isicelo esihlosiwe, njengokunwebeka, ukumelana nesimo sezulu, nokuhambisana nezinye izinto zokwakha. Ngokucabangela lezi zici, abasebenzisi bangakhetha impushana ye-polymer ehlakazeka kabusha ehlangabezana nezimfuneko zabo, ehlinzeka ngokusebenza okuphezulu, futhi isekele imigomo yabo iyonke.
Isikhathi sokuthumela: Aug-25-2023