I-Redispersible polymer powders (RDP) iyinhlanganisela eyinkimbinkimbi yama-polymers kanye nezithasiselo ezisetshenziswa kakhulu ezintweni zokwakha, ikakhulukazi ekukhiqizeni izinsimbi ezixubene ezomile.Lezi zimpushana zidlala indima ebalulekile ekuthuthukiseni ukusebenza kanye nezici zezinto zokwakha ezihlukahlukene ezifana nokunamathiswa kwamathayela, ama-grouts, izinhlanganisela ezizilinganisa kanye namapulasi kasimende.
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, nokuguquguquka.Okuqukethwe kwe-vinyl acetate ku-copolymer kungashintshwa ukuze kushintshwe 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 ithuthukise ukumelana kwamanzi nokunamathela ezimeni ezinomswakama.
Ama-Acrylic: Ama-Acrylic polymers, okuhlanganisa ama-acrylic ahlanzekile noma ama-copolymers, asetshenziselwa ukumelana nesimo sezulu esingavamile, ukuqina, kanye nokuhlukahluka.Baziwa ngokunikeza ukunamathela okuhle kakhulu ezinhlobonhlobo zama-substrates.
I-protective colloid:
I-Hydroxypropyl methylcellulose (HPMC): I-HPMC iyi-colloid evikelayo evame ukusetshenziswa ku-RDP.Ithuthukisa i-redispersibility yezinhlayiya ze-polymer futhi ithuthukise izakhiwo eziphelele ze-powder.
I-Polyvinyl alcohol (PVA): I-PVA enye i-colloid evikelayo esiza ekuzinzeni nasekuhlakazweni kwezinhlayiya ze-polymer.Iphinde ibambe iqhaza ekulawuleni i-viscosity ye-powder.
I-Plasticizer:
I-Dibutyl Phthalate (DBP): I-DBP iyisibonelo se-plasticizer evame ukungezwa ku-RDP ukuze kuthuthukiswe ukuguquguquka nokuguquguquka.Kuyasiza ukwehlisa izinga lokushisa lokuguqulwa kwengilazi ye-polymer, iyenze ibe nokunwebeka.
isigcwalisi:
I-Calcium Carbonate: Izigcwalisi ezifana ne-calcium carbonate zingengezwa ukuze kuthuthukiswe inqwaba yezimpushana futhi zinikeze indlela engabizi kakhulu yokulungisa izakhiwo ezifana nokuthungwa, i-porosity kanye ne-opacity.
Ama-stabilizers nama-antioxidants:
Ama-Stabilizers: Lezi zisetshenziselwa ukuvimbela ukuwohloka kwe-polymer ngesikhathi sokugcina nokucubungula.
Ama-Antioxidants: Ama-Antioxidants avikela i-polymer ekonakalisweni kwe-oxidative, eqinisekisa impilo ende ye-RDP.
Imisebenzi yengxenye ngayinye:
Isisekelo se-polymer: Ihlinzeka ngezakhiwo zokwakha ifilimu, ukunamathela, ukuguquguquka namandla omshini kumkhiqizo wokugcina.
I-protective colloid: Thuthukisa ukuhlakazeka kabusha, ukuzinza nokuhlakazeka kwezinhlayiya ze-polymer.
I-Plasticizer: Ithuthukisa ukuguquguquka nokuguquguquka.
Ama-Fillers: Lungisa izakhiwo ezifana nokuthungwa, i-porosity, ne-opacity.
Ama-Stabilizers nama-antioxidants: Vimbela ukuwohloka kwe-polymer ngesikhathi sokugcina nokucubungula.
Ekuphetheni:
Redispersible polymer powder (RDP) iyisithako esisebenza ngezindlela eziningi nesibalulekile ezintweni zokwakha zesimanje.Ukwakheka kwayo kwamakhemikhali, okuhlanganisa ama-polymers afana ne-EVA noma ama-acrylic resins, ama-colloid avikelayo, ama-plasticizers, ama-filler, ama-stabilizer nama-antioxidants, akhiwe ngokucophelela ukuze ahlangabezane nezidingo ezithile zohlelo ngalunye.Ukuhlanganiswa kwalezi zingxenye kusiza ukuthuthukisa i-powder redispersibility, amandla ebhondi, ukuguquguquka kanye nokusebenza okuphelele ekwakhekeni kodaka lwengxube eyomile.
Isikhathi sokuthumela: Dec-18-2023