I-Pelyperble Pelmer Powder (RDP)Ingabe into eyi-powdery eyenziwe ngokomisa i-polymer emulsion, evame ukusetshenziswa ezintweni zokwakha, ukumboza, ukunamathela kanye nezinamathelisa. Umsebenzi wayo oyinhloko ukumbungusela i-emulsion ngokungeza amanzi, ukuhlinzeka ngamanzi amahle, ukuqina kwamanzi, ukumelana kwamanzi, ukumelana nokuqhekeka, kanye nokumelana nesimo sezulu.
Ukwakheka kwe-polymer powder (RDP) engahle kuhlaziywe kusuka ezicini eziningi, ikakhulukazi kufaka phakathi lezo zinto ezilandelayo:
1. I-Polymer Resin
Ingxenye esemqoka ye-polymer powder evuselelekayo i-polymer resin, okuvame ukuthi i-polymer etholwe yi-emulsion polymerization. Izindawo ezijwayelekile ze-polymer zifaka:
I-Polyvinyl Alcohol (PVA): Inezindawo ezinhle zokunamathela kanye nezakhiwo ezenziwe ngefilimu futhi zisetshenziswa kabanzi ezintweni zokwakha.
Ama-polyacrylates (njengama-polycrylates, ama-polyurethanes, njll.): Yiba nokuqina okuhle, amandla abusayo, nokumelana kwamanzi.
I-Polystyrere (PS) noma i-Ethylene-Vinyl Acetate Copolymer (EVA): I-EVA) esetshenziselwa ukuthuthukisa izakhiwo ezenziwe ngefilimu, khulisa ukumelana kwamanzi, kanye nokumelana nesimo sezulu.
I-Polymethyl Methacrylate (PMMA): Le polymer inokulwa nokuguga nokucaca kahle.
Lawa ma-polymer resins akha ama-emulsions ngokuphendula kwe-polymerization, bese amanzi e-emulsion isuswa ngokufafaza noma ukugcwala ukomisa i-polymer powder (i-RDP) ngefomu le-powder.
2. Ama-Surfactants
Ukuze ulondoloze ukuqina phakathi kwezinhlayiya ze-polymer futhi uvikele ukuhlangana nge-agglomeration ku-powder, inani elifanelekile le-surffactants lizongezwa ngesikhathi sokukhiqiza. Iqhaza lama-surfactants ukunciphisa ukungezwani komhlaba phakathi kwezinhlayiya nokusiza izinhlayiya ezihlakazeka emanzini. Ama-surfactants ajwayelekile afaka:
Ama-surfic angewona ama-eonic (anjenge-polyethers, i-polyethylene glycols, njll.).
Ama-anionic surfactants (afana nosawoti onamafutha acid, i-alkyl sulfonates, njll.).
Lezi zinto ezisetshenziswayo zingathuthukisa ukungafani kwe-polymer powder (RDP) s, evumela i-latex powder ukuthi yaphinde yakha i-emulsion ngemuva kokungeza amanzi.
3. Ama-fillers kanye nabakhulu
Ukuze uguqule ukusebenza kwe-latex powders futhi unciphise izindleko, amanye ama-filler nabakhulu bangangezwa ngesikhathi sokukhiqiza. Kunezinhlobo eziningi zabahlambukeli, futhi okuvamile kufaka phakathi:
I-calcium carbonate: i-inorganic filler esetshenziswa kakhulu engakhuphula ukunamathela futhi ithuthukise ukusebenza kwezindleko.
I-Talc: Ingakhulisa uketshezi nokumelana nokuqhekeka kwezinto ezibonakalayo.
Amaminerali abubula: anjenge-bentonite, i-graphite enwetshiwe, njll., Angathuthukisa ukumelana nokuqhekeka nokumelana kwamanzi okuqukethwe.
Abakhudlwana bavame ukusetshenziselwa ukulungisa i-viscosity yomkhiqizo ukuze bayivumelanise nezimo ezahlukahlukene zokwakha. Abakhulu abajwayelekile bafaka i-hydroxypropylllykylm methylcellulose (HPMC) kanye ne-polyvinyl alcohol (PVA).
4. I-Age-Caking Agent
Emikhiqizweni eyimpuphu, ukuze ivikele phakathi kokugcinwa ngesikhathi sokugcina nokuhamba, ama-anti-casiking agents angangezwa ngesikhathi sokukhiqiza. Ama-anti-casiking agents ikakhulukazi anezinto ezinhle kakhulu ezingaziwa, njenge-aluminium silicate, i-silicon dioxide, njll. Lezi zinto zingakha ifilimu evikelayo ngaphezulu kwezinhlayiya ze-latex
5. Ezinye izengezo
I-Redisperible polymer powder (RDP) nayo ingahle ibe nezithasiselo ezithile ezikhethekile ukuthuthukisa izakhiwo ezithile:
I-ejenti evimbela ukungavikeli: ithuthukisa ukumelana nesimo sezulu kanye nekhono lokulwa nokuguga kwezinto ezibonakalayo.
I-Antibacterial Agent: Yehlisa ukukhula kwama-microorganisms, ikakhulukazi lapho kusetshenziswa endaweni enomswakama.
I-Plistic: Ithuthukisa ukuguquguquka nokuvimbela ukumelana kwe-latex powder.
U-Antifreeze: Vimbela izinto zokwakha kusuka ekukholweni ezindaweni eziphansi zokushisa, okuthinta imiphumela yokwakha nokusebenzisa.
6 Umswakama
Yize i-polymer evuselelayo ye-polymer (RDP) isesimweni se-powder eyomile, nayo idinga inani elithile lokulawulwa komswakama ngesikhathi sokukhiqiza, futhi okuqukethwe umswakama kuvame ukulawulwa ngezansi kwe-1%. Okuqukethwe komswakama okufanele kusiza ukulondolozwa uketshezi nokuqina kwesikhathi eside kwe-powder.
Indima nokusebenza kwe-polymer powder (RDP)
Iqhaza elibalulekile le-Polymer Powder (RDP) ukuthi lingabuyiselwa kabusha ukwakha i-emulsion ngemuva kokungeza amanzi, futhi inezici ezilandelayo ezibalulekile zokusebenza:
Ukunamathela okuhle kakhulu: Ngcono amandla eBonding of Coatings kanye nama-adhesives, futhi uthuthukise amandla okubopha phakathi kwezinto zokwakha.
Ukuqina nokuvumelana nezimo: Thuthukisa ukunwebeka kokuhlanganiswa, ukuthuthukisa ukumelana kwayo kokuqhekeka kanye nokumelana nomthelela.
Ukumelana Amanzi: Ngcono ukumelana kwamanzi kwezinto ezibonakalayo, ezilungele ukusetshenziswa ezindaweni zangaphandle noma ezinomswakama.
Ukumelana Nesimo Sezulu: Thuthukisa ukumelana kwe-UV ye-UV, anti-ageng nezinye izakhiwo, futhi kunwebe impilo yayo yenkonzo.
Ukumelana nokuqhekeka: Kunokumelana kahle nokuqhekeka okuhle futhi kulungele izidingo ezilwa nokuqhekeka emisebenzini yokwakha.
I-RDPyenziwa ngokuguqula i-emulsion polymer ibe yimpuphu ngenqubo eyinkimbinkimbi. Inezakhiwo eziningi ezinhle kakhulu futhi isetshenziswa kabanzi ekwakheni, ukumboza, ukunamathela kanye nezinye izinkambu. Ukukhethwa kanye nengxenye yezithako zako kuthinta ngqo ukusebenza kwayo kokugcina.
Isikhathi sePosi: Mar-11-2025