Izinto ezikrwada zomgubo weLatex ophinde wahlakazwa

I-redispersed latex powder (RDP) luhlobo lwepolymer emulsion powder esetyenziswa ngokubanzi kwishishini lokwakha kwizicelo ezifana ne-samente-based adhesives tile, i-self-leveling compounds, kunye ne-insulation yangaphandle kunye neenkqubo zokugqiba. Ii-RDPs zenziwe ngokutshiza ngokumisa i-emulsion ye-polymer, engumxube wamanzi, i-monomer okanye umxube we-monomers, i-surfactant, kunye neentlobo ezahlukeneyo zokudibanisa. Kweli nqaku, siza kuxoxa ngemathiriyeli ekrwada edla ngokusetyenziswa ukuvelisa ii-RDPs.

1. Iimonomers Iimonomers ezisetyenziswa kwimveliso yee-RDPs zinokwahluka ngokuxhomekeke kwiipropati ezinqwenelekayo zemveliso yokugqibela. Iimonomers ezisetyenziswa ngokuqhelekileyo ziquka i-styrene, i-butadiene, i-acrylic acid, i-methacrylic acid, kunye nezinto eziphuma kuzo. Irabha ye-Styrene-butadiene (i-SBR) lukhetho oludumileyo lwe-RDPs ngenxa yokubambelela kwayo kakuhle, ukumelana namanzi, kunye nokuqina.
2. I-surfactants I-surfactants isetyenziselwa ukuveliswa kwee-RDPs ukuzinzisa i-emulsion kunye nokukhusela i-coagulation okanye i-flocculation. Ii-surfactants eziqhelekileyo ezisetyenziswa kwii-RDPs ziquka i-anionic, i-cationic, kunye ne-nonionic surfactants. I-Anionic surfactants yolona hlobo lusetyenziswa ngokuqhelekileyo kwii-RDPs, njengoko zibonelela ngokuzinza kwe-emulsion efanelekileyo kunye nokuhambelana nezinto ze-cementitious.
3. I-Stabilizers I-Stabilizers isetyenziselwa ukukhusela i-polymer particles kwi-emulsion kwi-coalescing okanye i-aggregating ngexesha lokugcina nokuthutha. Izizinzi eziqhelekileyo ezisetyenziswa kwi-RDPs ziquka i-polyvinyl alcohol (PVA), i-hydroxyethyl cellulose (HEC), kunye ne-carboxymethyl cellulose (CMC).
4. Abaqalisi Abaqalisi basetyenziselwa ukuqalisa i-polymerization reaction phakathi kwe-monomers kwi-emulsion. Abaqalisi abaqhelekileyo abasetyenziswe kwi-RDP baquka abaqalisi be-redox, njenge-potassium persulfate kunye ne-sodium bisulfite, kunye nabaqalisi be-thermal, njenge-azobisisobutyronitrile.
5. Ii-agent ezingathathi hlangothi zisetyenziselwa ukulungelelanisa i-pH ye-emulsion ukuya kwinqanaba elifanelekileyo le-polymerization kunye nokuzinza. Ii-agent eziqhelekileyo zokungathathi hlangothi ezisetyenziswa kwi-RDP zibandakanya i-ammonia, i-sodium hydroxide, kunye ne-potassium hydroxide.
6. Ii-agent ze-Crosslinking zisetyenziselwa ukunqumla amakhonkco e-polymer kwi-emulsion, enokuphucula iimpawu zomatshini kunye nokuchasana kwamanzi kwimveliso yokugqibela. Ii-agent eziqhelekileyo zokunqumla ezisetyenziswa kwi-RDPs ziquka i-formaldehyde, i-melamine, kunye ne-urea.
7. Iiplastiki zePlasticizers zisetyenziselwa ukuphucula ukuguquguquka kunye nokusebenza kwee-RDPs. Iiplastiki eziqhelekileyo ezisetyenziswa kwi-RDP zibandakanya i-polyethylene glycol (PEG) kunye ne-glycerol.
8. IiFillers Fillers zongezwa kwii-RDPs ukuphucula iimpawu zabo zoomatshini kunye nokunciphisa iindleko. Iifayile eziqhelekileyo ezisetyenziswa kwi-RDPs ziquka i-calcium carbonate, i-talc, kunye ne-silica.
9. Ii-Pigments Pigments zongezwa kwi-RDPs ukubonelela ngombala kunye nokuphucula i-aesthetics yemveliso yokugqibela. Ii-pigments eziqhelekileyo ezisetyenziswa kwii-RDPs ziquka i-titanium dioxide kunye ne-iron oxide.

Ukuqukumbela, izinto ezisetyenziswa ekuveliseni ii-RDPs zinokuhluka ngokuxhomekeke kwiipropati ezifunwayo zemveliso yokugqibela. Iimonomers, ii-surfactants, izizinzi, iziqalisi, ii-agent ezi- neutralizing, i-crosslinking agents, ii-plasticizers, ii-fillers, kunye nee-pigments zisetyenziswa ngokubanzi ekuveliseni ii-RDPs.