Ama-powder e-polymer aphinde ahlakazeke (i-RDP) ayingxube eyinkimbinkimbi yama-polymer kanye nezithasiselo ezisetshenziswa kabanzi ezintweni zokwakha, ikakhulukazi ekukhiqizweni kwama-mortar axutshwe okomile. Lawa ma-powder adlala indima ebalulekile ekuthuthukiseni ukusebenza kanye nezici zezinto zokwakha ezahlukahlukene njengezinamathiselo zamathayela, ama-grout, ama-compounds azilinganisayo kanye nama-plaster e-cementitious.
Izingxenye ezibalulekile:
Isisekelo se-polymer:
I-ethylene vinyl acetate (EVA): I-EVA copolymer ivame ukusetshenziswa ku-RDP ngenxa yezakhiwo zayo ezinhle kakhulu zokwakha ifilimu, ukunamathela, kanye nokuguquguquka. Okuqukethwe kwe-vinyl acetate ku-copolymer kungalungiswa ukuze kushintshe izakhiwo ze-polymer.
I-Vinyl Acetate vs. I-Ethylene Carbonate: Kuye ngezidingo ezithile zohlelo lokusebenza, abakhiqizi bangasebenzisa i-ethylene carbonate esikhundleni se-vinyl acetate. I-Ethylene carbonate inokumelana kwamanzi okuthuthukisiwe kanye nokunamathela ezimweni ezinomswakama.
Ama-Acrylic: Ama-polymer e-Acrylic, kufaka phakathi ama-acrylic ahlanzekile noma ama-copolymer, asetshenziswa ngenxa yokumelana kwawo nesimo sezulu okumangalisayo, ukuqina, kanye nokuguquguquka. Ayaziwa ngokuhlinzeka ngokunamathela okuhle kakhulu ezinhlotsheni ezahlukahlukene ze-substrate.
I-colloid evikelayo:
I-Hydroxypropyl methylcellulose (HPMC): I-HPMC iyi-colloid evikelayo evame ukusetshenziswa ku-RDP. Ithuthukisa ukuhlakazeka kabusha kwezinhlayiya ze-polymer futhi ithuthukisa izakhiwo eziphelele zempuphu.
I-Polyvinyl alcohol (PVA): I-PVA ingenye i-colloid evikelayo esiza ekuzinzeni nasekusabalaleni kwezinhlayiya ze-polymer. Iphinde idlale indima ekulawuleni ukujiya kwempuphu.
I-Plasticizer:
I-Dibutyl Phthalate (DBP): I-DBP iyisibonelo se-plasticizer evame ukungezwa ku-RDP ukuthuthukisa ukuguquguquka kanye nokucutshungulwa. Iyasiza ekwehliseni izinga lokushisa lokushintsha kwengilazi le-polymer, okwenza kube nokunwebeka kakhudlwana.
isigcwalisi:
I-Calcium Carbonate: Ama-filler afana ne-calcium carbonate angangezwa ukuze kuthuthukiswe ubukhulu bama-powder futhi anikeze indlela engabizi yokulungisa izakhiwo ezifana nokuthungwa, ukuvuleka kanye nokungacaci kahle.
Izinzisa kanye nama-antioxidants:
Iziqinisi: Lezi zisetshenziselwa ukuvimbela ukuwohloka kwe-polymer ngesikhathi sokugcina nokucubungula.
Ama-Antioxidants: Ama-Antioxidants avikela i-polymer ekuwohlokeni kwe-oxidative, okuqinisekisa ukuthi i-RDP ihlala isikhathi eside.
Imisebenzi yengxenye ngayinye:
Isisekelo se-polymer: Sihlinzeka ngezakhiwo zokwakha ifilimu, ukunamathela, ukuguquguquka kanye namandla okusebenza emkhiqizweni wokugcina.
I-colloid evikelayo: Thuthukisa ukuhlakazeka kabusha, ukuqina kanye nokusabalala kwezinhlayiya ze-polymer.
I-Plasticizer: Ithuthukisa ukuguquguquka kanye nokucutshungulwa kalula.
Ama-Filler: Lungisa izakhiwo ezifana nokuthungwa, ukuvuleka, kanye nokungacaci.
Izinzisi kanye nama-antioxidants: Zivimbela ukuwohloka kwe-polymer ngesikhathi sokugcina kanye nokucubungula.
Ekuphetheni:
I-Redispersible polymer powder (RDP) iyisithako esisebenziseka kalula nesibalulekile ezintweni zokwakha zesimanje. Ukwakheka kwayo kwamakhemikhali, okuhlanganisa ama-polymer afana ne-EVA noma ama-acrylic resins, ama-colloid avikelayo, ama-plasticizer, ama-filler, ama-stabilizer kanye nama-antioxidants, kuklanywe ngokucophelela ukuze kuhlangatshezwane nezidingo ezithile zokusetshenziswa ngakunye. Ukuhlanganiswa kwalezi zingxenye kusiza ekuthuthukiseni ukuphinde kuphinde kuhlakazeke kwe-powder, amandla okubopha, ukuguquguquka kanye nokusebenza okuphelele ekwakhiweni kwe-dry mix mortar.
Isikhathi sokuthunyelwe: Disemba 18-2023