Inqubo Yokwenziwa Kwefilimu ye-RDP ku-Cement Mortar

Inqubo yokwakhiwa kwefilimu ye-Redispersible Polymer Powder (RDP) odakeni lukasimende ibandakanya izigaba eziningana ezifaka isandla ekuthuthukisweni kwefilimu ye-polymer ehlangene futhi ehlala isikhathi eside.Nakhu okufingqiwe kwenqubo yokwakhiwa kwefilimu:

1. Ukuhlakazeka: Ekuqaleni, izinhlayiya ze-RDP zihlakazwa ngokufanayo esigabeni samanzi sengxube yodaka lukasimende.Lokhu kuhlakazeka kwenzeka ngesikhathi sokuxutshwa, lapho izinhlayiya ze-RDP zifakwa engxubeni yodaka kanye nezinye izithako ezomile.
2. I-Hydration: Lapho ihlangana namanzi, izinhlayiya ze-hydrophobic polymer ku-RDP ziqala ukukhukhumala futhi zimunce umswakama.Le nqubo, eyaziwa ngokuthi i-hydration, ibangela ukuthi izinhlayiya ze-polymer zithambe futhi zibe lula.
3. Ukwakhiwa Kwefilimu: Njengoba ingxube yodaka isetshenziswa futhi iqala ukwelapha, izinhlayiya ze-RDP ezinama-hydrated ziyahlangana futhi zihlangane zenze ifilimu ye-polymer eqhubekayo.Le filimu inamathela ebusweni be-matrix yodaka futhi ibopha izinhlayiya ngazinye ndawonye.
4. I-Coalescence: Ngesikhathi senqubo yokwelapha, izinhlayiya eziseduze ze-RDP ziyahlangana futhi zihlangane, lapho zihlangana khona futhi zakhe amabhondi aphakathi kwamamolekyuli.Le nqubo yokuhlanganisa inomthelela ekwakhekeni kwenethiwekhi ye-polymer ehlangene futhi eqhubekayo ngaphakathi kwe-matrix yodaka.
5. I-Crosslinking: Njengoba udaka lukasimende lwelapheka futhi luqina, ukuphambana kwamakhemikhali kungase kwenzeke phakathi kwamaketanga e-polymer efilimini ye-RDP.Le nqubo yokuxhumanisa iqinisa ifilimu futhi ithuthukise ukunamathela kwayo ku-substrate nezinye izingxenye zodaka.
6. Ukomiswa Nokuhlanganiswa: Udaka lukasimende luyomiswa futhi luqiniswe njengoba amanzi ehwamuka engxubeni futhi ama-binders asimende elapha.Le nqubo isiza ukuqinisa ifilimu ye-RDP futhi iyihlanganise ne-matrix yodaka oluqinile.
7. Ukwakhiwa Kwefilimu Okokugcina: Lapho kuphothulwa inqubo yokwelapha, ifilimu ye-RDP ithuthuka ngokugcwele futhi ibe yingxenye ebalulekile yokwakheka kukasimende.Ifilimu inikeza ukuhlangana okwengeziwe, ukuguquguquka, nokuqina odongeni, ithuthukisa ukusebenza kwayo jikelele kanye nokumelana nokuqhekeka, ukuguqulwa, nokunye ukucindezeleka kwemishini.

inqubo yokwakhiwa kwefilimu ye-RDP kudaka lukasimende ihilela izigaba ze-hydration, coalescence, crosslinking, kanye nezokuhlanganisa, ezibamba iqhaza ekuthuthukisweni kwefilimu ye-polymer ehlangene futhi ehlala isikhathi eside ngaphakathi kwe-matrix yodaka.Le filimu ithuthukisa ukunamathela, ukuguquguquka, nokuqina kodaka, ithuthukisa ukusebenza kwayo ezinhlelweni ezihlukahlukene zokwakha.