Iyini i-Redispersible Polymer Powder?

I-polymer powder ehlakazeka kabusha(I-RPP) iyimpushana egeleza mahhala, emhlophe etholwe ngama-emulsions e-polymer e-spray-drying. Iqukethe izinhlayiya ze-polymer resin ezihlakazeka emanzini ukuze zenze i-emulsion, eyomiswa ibe ifomu lempushana. I-RPP iqukethe inhlanganisela yama-polymers, ngokuvamile i-vinyl acetate ethylene (VAE), i-vinyl acetate versatate (VAc/VeoVa), ama-acrylics, namanye ama-copolymers. Lawa ma-polymer akhethwa ngokuya ngezakhiwo zawo ezithile kanye nezicelo ezihlosiwe.

Nazi ezinye izici ezibalulekile kanye nezakhiwo ze-polymer powder ehlakazeka kabusha:

1. Ukwakhiwa Kwefilimu: Uma ixubene namanzi, izinhlayiya ze-RPP ziphinde zihlakazeke futhi zenze ifilimu ye-polymer eguquguqukayo lapho yomiswa. Le filimu ihlinzeka ngokunamathela, ukubumbana, nokuqina kuma-substrates ahlukahlukene, njengokhonkolo, udaka, okokunamathelisa kwamathayela, kanye nezingubo zokugqoka.
2. Ukunamathela: I-RPP ithuthukisa ukunamathela phakathi kwezinto ezihlukene, okuhlanganisa ama-substrates nama-coatings, amathayili nama-adhesives, kanye nemicu nezibophezelo. Ithuthukisa amandla ebhondi futhi ivimbele ukuhlukaniswa noma ukuhlukaniswa kwezinto ngokuhamba kwesikhathi.
3. Ukuvumelana nezimo: I-RPP inika ukuguquguquka kwezingubo zokunamathela, izinamathiselo, kanye nodaka, okuzivumela ukuthi zihambisane nokunyakaza kwe-substrate, ukunwetshwa kokushisa, nokunye ukucindezeleka ngaphandle kokuqhekeka noma ukwehluleka. Lesi sakhiwo sibalulekile ekugcineni ubuqotho bezinto ezisetshenzisiwe.
4. Ukumelana Namanzi: I-RPP ithuthukisa ukumelana namanzi kokubunjwa, iwenze afanelekele izindawo ezingaphandle noma ezimanzi. Kuyasiza ukuvimbela ukungena komswakama futhi kuvikele ama-substrates angaphansi ekulimaleni.
5. Ukuqina: I-RPP ithuthukisa ukuqina kanye nesimo sezulu sezinto ezibonakalayo ngokuthuthukisa ukumelana kwazo nemisebe ye-UV, ukuchayeka kwamakhemikhali, ukuhuzuka, nokuguga. Yandisa ubude besikhathi sezinto zokumboza, izinto zokunamathisela, kanye nodaka, kunciphisa izidingo zokulondolozwa nezindleko.
6. Ukusebenza: I-RPP ithuthukisa ukusebenza nokucutshungulwa kokwakheka ngokuthuthukisa ukugeleza, ukulinganisa, nokusabalala. Iqinisekisa ukumbozwa okufanayo, ukusetshenziswa okubushelelezi, nokusebenza okungaguquki kwezinto ezisetshenzisiwe.
7. Ukulawula I-Rheology: I-RPP isebenza njengesilungisi se-rheology, esithonya i-viscosity, i-thixotropy, kanye nokumelana ne-sag kokwakhiwa. Isiza ukuthuthukisa izakhiwo zohlelo lokusebenza nokusebenza kwezingubo zokunamathisela, izinamathiselo, nodaka.
8. Ukuhambisana: I-RPP ihambisana nohlu olubanzi lwezinye izithasiselo, izigcwalisi, izimibalabala, nezibophezelo ezivame ukusetshenziswa ekwenziweni. Ayithinti kabi izakhiwo noma ukusebenza kwezinye izingxenye, iqinisekisa ukwakheka kokuzinza nokuvumelana.

Impushana ye-polymer ehlakazeka kabusha ithola ukusetshenziswa okubanzi ezinhlelweni zokwakha, okuhlanganisa izinto zokunamathisela zamathayela, udaka olusekelwe kusimende, izinhlanganisela ezizilinganisa ngokwazo, ulwelwesi oluvimbela amanzi, nezinsimbi zokulungisa. Iphinde ibe nezinhlelo zokusebenza kuma-coatings, ama-adhesive, ama-sealant, izindwangu, nezimboni zamaphepha, okunomthelela ekusebenzeni nasekuqineni kwezinto ezihlukahlukene kanye nemikhiqizo.