I-Redispersible polymer powder (RDP) iyi-copolymer ye-vinyl acetate ne-ethylene ekhiqizwa ngenqubo yokumisa isifutho. Kuyisithako esiyinhloko ezinhlobonhlobo zezicelo zokwakha, ukuhlinzeka ngokunamathela okungcono, ukuguquguquka nokuqina emikhiqizweni esekwe usimende. Ukwenziwa kwezimpushana ze-polymer ezihlakazeka kabusha kuhilela izinyathelo ezimbalwa.
1. Ukukhetha impahla eluhlaza:
I-Vinyl acetate-ethylene copolymer: Impahla eyinhloko ye-RDP iyi-copolymer ye-vinyl acetate ne-ethylene. Le copolymer ikhethwe ngenxa yezakhiwo zayo ezinhle kakhulu zokunamathisela kanye nekhono lokukhulisa ukuguquguquka nokuqina kwezinto zikasimende.
2. I-Emulsion polymerization:
Inqubo yokukhiqiza iqala nge-emulsion polymerization, lapho i-vinyl acetate kanye ne-ethylene monomers yenziwa i-polymerized phambi kwabaqalisi kanye nama-stabilizers.
Inqubo ye-emulsion polymerization ilawulwa ngokucophelela ukuze kutholwe isisindo samangqamuzana adingekayo, ukwakheka, kanye nesakhiwo se-copolymer.
3. Ukusabela kanye ne-copolymerization:
I-Vinyl acetate ne-ethylene monomers zisabela phambi kwe-catalyst ukwenza i-copolymer.
Inqubo ye-copolymerization ibalulekile ukuze uthole ama-polymer anezakhiwo ezifiselekayo, okuhlanganisa izici ezinhle zokwakha ifilimu kanye nokuphinde kuhlakazeka.
4. Futha ukomisa:
I-emulsion isuke ingaphansi kwenqubo yokumisa isifutho. Lokhu kuhilela ukufafaza i-emulsion ekamelweni elishisayo, lapho amanzi ehwamuka khona, kushiye izinhlayiya eziqinile ze-polymer ehlakazeka kabusha.
Izimo zokumisa izifutho, njengezinga lokushisa kanye nokugeleza komoya, zilawulwa ngokucophelela ukuze kuqinisekiswe ukwakheka kwezinhlayiya zempushana ezigeleza mahhala.
5. Ukwelashwa kwendawo:
Ukwelapha okungaphezulu kuvame ukusetshenziselwa ukuthuthukisa ukuzinza kwesitoreji kanye nokuhlakazeka kabusha kwezimpushana ze-polymer.
Izithasiselo ze-Hydrophobic noma ama-colloid avikelayo avame ukusetshenziswa ekwelapheni okungaphezulu ukuvimbela ukuhlangana kwezinhlayiyana futhi kuthuthukise ukuhlakazeka kwempushana emanzini.
6. Ukulawulwa kwekhwalithi:
Izinyathelo zokulawula ikhwalithi eziqinile zisetshenziswa kuyo yonke inqubo yokukhiqiza. Amapharamitha afana nokusatshalaliswa kosayizi wezinhlayiyana, ukuminyana kwenqwaba, okuqukethwe okusele kwe-monomer kanye nezinga lokushisa lokushintsha kwengilazi kuyagadwa ukuze kuqinisekiswe ukuhambisana komkhiqizo.
7. Ukupakisha:
Impushana yokugcina ye-polymer ehlakazeka kabusha ifakwe ezitsheni ezingafaka umswakama ukuze kuvinjelwe ukumuncwa kwamanzi, okungase kuthinte kabi ukusebenza kwayo.
Izicelo ze-Redispersible Polymer Powder:
I-RDP isetshenziswa ezinhlobonhlobo zezinhlelo zokwakha ezihlanganisa izinto zokunamathisela zamathayela, izinhlanganisela ezizilinganisa, izinhlelo zokuqeda ukufakwa kwangaphandle (EIFS) nezisimende zikasimende.
I-powder ithuthukisa izakhiwo ezifana nokumelana namanzi, ukuguquguquka nokunamathela, okusiza ukuthuthukisa ukusebenza okuphelele nokuqina kwalezi zinto zokwakha.
Ekuphetheni:
I-polymer powder e-redispersible iyinto eguquguqukayo enezicelo ezibalulekile embonini yezokwakha. Ukukhiqizwa kwayo kuhilela ukukhethwa ngokucophelela kwezinto zokusetshenziswa, i-emulsion polymerization, ukomisa isifutho, ukwelashwa kwendawo kanye nezinyathelo eziqinile zokulawula izinga.
Ukwenziwa kwezimpushana ze-polymer ezihlakazeka kabusha kuyinqubo eyinkimbinkimbi edinga ukunemba nokunakwa kwemininingwane ukuze kutholwe umkhiqizo osezingeni eliphezulu onezakhiwo ezidingekayo ukuze kwenziwe izicelo zokwakha.
Isikhathi sokuthumela: Dec-18-2023