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 ye-coalescence 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 kanye 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 odakeni lukasimende ihlanganisa 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.