Inqubo yokukhiqiza kabusha i-polymer powder

Isingeniso

I-redispersible polymer powder (RDP) iwuhlobo lwe-polymer powder olungaphinde luhlakazwe emanzini ukuze lwakhe i-emulsion ezinzile.Isetshenziswa kabanzi embonini yezokwakha njengesengezo sokuthuthukisa ukusebenza kwezinto ezisekelwe usimende.I-RDP ikhiqizwa inqubo eyaziwa ngokuthi i-spray-drying, ehlanganisa ukufakwa kwe-atom yesisombululo se-polymer ibe yimpushana.Impushana iyomiswa futhi igaywe ibe usayizi wezinhlayiyana oyifunayo.

Inqubo yokukhiqiza ye-RDP ibandakanya izinyathelo ezimbalwa, okuhlanganisa ukukhetha kwe-polymer, ukulungiswa kwesixazululo, i-atomization, ukomisa, nokugaya.Izinga lomkhiqizo wokugcina lincike kakhulu kwikhwalithi yezinto ezingavuthiwe kanye nemingcele yenqubo esetshenziswa ngesikhathi sokukhiqiza.

Ukukhetha kwePolymer

Isinyathelo sokuqala enqubweni yokukhiqiza ye-RDP ukukhethwa kwe-polymer efanele.Ukukhethwa kwe-polymer kusekelwe ezintweni ezifunwayo zomkhiqizo wokugcina, njengokumelana namanzi, ukunamathela, nokuguquguquka.Ama-polymers asetshenziswa kakhulu ekukhiqizeni i-RDP ama-vinyl acetate-ethylene copolymers, ama-acrylic copolymers, ne-styrene-butadiene copolymer.

Ukulungiselela Isixazululo

Uma i-polymer isikhethiwe, bese incibilika ku-solvent ukuze kwakhiwe isisombululo.Izincibilikisi ezisetshenziswa kakhulu ekukhiqizweni kwe-RDP zingamanzi nezincibilikizi eziphilayo njenge-ethanol ne-isopropanol.Ukugxila kwesixazululo se-polymer ngokuvamile kuphakathi kwe-10-20%.

I-Atomization

Isinyathelo esilandelayo enqubweni yokukhiqiza ye-RDP i-atomization.I-Atomization inqubo yokuhlukanisa isixazululo se-polymer sibe amaconsi amancane.Lokhu ngokuvamile kwenziwa kusetshenziswa umlomo wombhobho wengcindezi ephezulu noma i-atomizer ejikelezayo.Amaconsi abe esemiswa emoyeni oshisayo ukuze enze impushana.

Ukomisa

Impushana ibe isiyomiswa emoyeni oshisayo ukuze kukhishwe isincibilikisi.Inqubo yokomisa ngokuvamile yenziwa emazingeni okushisa aphakathi kuka-80-120°C.Isikhathi sokumisa sincike ohlotsheni lwe-polymer esetshenzisiwe, ukugxila kwesixazululo, nosayizi wezinhlayiyana oyifunayo.

Ukugaya

Isinyathelo sokugcina ohlelweni lokukhiqiza i-RDP siwukugaya.Ukugaya kuyinqubo yokugaya impushana ibe usayizi wezinhlayiyana ocolekile.Lokhu ngokuvamile kwenziwa kusetshenziswa isigayo sesando noma isigayo sebhola.Usayizi wezinhlayiyana zomkhiqizo wokugcina ngokuvamile uphakathi kwama-microns angu-5-50.

Isiphetho

I-polymer powder e-redispersible iwuhlobo lwe-polymer powder engaphinde ihlakazwe emanzini ukuze yakhe i-emulsion ezinzile.Isetshenziswa kabanzi embonini yezokwakha njengesengezo sokuthuthukisa ukusebenza kwezinto ezisekelwe usimende.Inqubo yokukhiqiza ye-RDP ibandakanya izinyathelo ezimbalwa, okuhlanganisa ukukhetha kwe-polymer, ukulungiswa kwesixazululo, i-atomization, ukomisa, nokugaya.Izinga lomkhiqizo wokugcina lincike kakhulu kwikhwalithi yezinto ezingavuthiwe kanye nemingcele yenqubo esetshenziswa ngesikhathi sokukhiqiza.