1. pfungwa huru
Redispersible polymer hupfundiyo inonyanya kuwedzera yehupfu yakaoma yakagadzirira-yakasanganiswa dhaka senge simende-based kana gypsum-based.
Redispersible latex powder is a polymer emulsion iyo yakapfapfaidzwa-yakaomeswa uye yakaunganidzwa kubva pakutanga 2um kuita spherical particles e80 ~ 120um.Nekuti nzvimbo dzezvimedu dzakaputirwa neinorganic, yakaoma-mugadziri-inodzivirira hupfu, tinowana yakaoma polymer hupfu.Iwo ari nyore kwazvo kudurura uye bhegi rekuchengetera mumatura.Kana hupfu hwasanganiswa nemvura, simende kana gypsum-based mortar, inogona kuparadzirwa zvakare, uye iyo basic particles (2um) mairi inozoumbazve kuita mamiriro akaenzana neiyo yekutanga latex, saka inonzi redispersible latex powder.
Iine yakanaka redispersibility, inopararira zvakare mu emulsion paunosangana nemvura, uye ine chaiyo yakafanana yemakemikari emulsion seyekutanga emulsion.Nekuwedzera inorasika yepolymer poda kune simende-yakavakirwa kana gypsum-yakaomeswa poda yakagadzirira-yakasanganiswa dhaka, zvakasiyana siyana zvedhaka zvinogona kuvandudzwa, senge:
Kuvandudza kunamatira uye kubatana kwedhaka;
Deredza kunyura kwemvura kwechinhu uye elastic modulus yezvinhu;
Flexural simba, kukanganisa kupikisa, abrasion kuramba uye kusimba kwezvinhu zvekusimbisa;
Kuvandudza kushanda kwekuvaka kwezvinhu, nezvimwewo.
2. Mhando dzehupfu dzepolymer dzinoparara
Parizvino, iwo makuru ekushandisa mumusika anogona kukamurwa kuita disperse latex:
Vinyl acetate uye ethylene copolymer rubber powder (Vac/E), ethylene uye vinyl chloride uye vinyl laurate ternary copolymer rubber poda (E/Vc/VL), vinyl acetate uye ethylene uye yakakwirira fatty acid vinyl ester terpolymerization Rubber poda (Vac/E/ VeoVa), vinyl acetate uye yakakwirira fatty acid vinyl ester copolymer rubber powder (Vac/VeoVa), acrylate uye styrene copolymer rubber powder (A/S), vinyl acetate uye acrylate uye yakakwira fatty acid Vinyl ester terpolymer rubber powder (Vac/A/ VeoVa), vinyl acetate homopolymer rubber powder (PVac), styrene uye butadiene copolymer rubber powder (SBR), nezvimwewo.
3. Kuumbwa kwepolymer powder inoparara
Dispersible polymer powders kazhinji hupfu chena, asi vashoma vane mamwe mavara.Zvisungo zvayo zvinosanganisira:
Polymer resin: Inowanikwa mukati mechikamu cheiyo rabha poda zvimedu, uye zvakare ndicho chinhu chikuru cheiyo redispersible polymer hupfu.
Kuwedzera (mukati): pamwe chete neresin, inoita basa rekugadzirisa resin.
Zvekuwedzera (zvekunze): Zvimwe zvekushandisa zvinowedzerwa kuti uwedzere kuwedzera mashandiro eiyo inorasika polymer poda.
Protective colloid: chidimbu che hydrophilic material yakaputirwa pamusoro pezve dispersible latex powder particles, iyo inodzivirira colloid yeakawanda redispersible latex powder is polyvinyl alcohol.
Anti-caking agent: yakanaka mineral filler, inonyanya kushandiswa kudzivirira hupfu hwerabha kubva pakubika panguva yekuchengetedza uye yekufambisa uye kufambisa kuyerera kwehupfu hwerabha (kurasa kubva mumabhegi emapepa kana matangi).
4. Basa rekuparara kwepolymer poda mudhaka
Iyo redispersible latex powder inoparadzirwa mufirimu uye inoita sechinhu chinosimbisa sechipiri chekunamatira;
Iyo inodzivirira colloid inobatwa nedhaka system (haizoparadzwi nemvura mushure mekugadzirwa kwemafirimu, kana "kupararira kwechipiri";
Iyo firimu-inogadzira polymer resin inogoverwa mukati medhaka system sechinhu chinosimbisa, nekudaro ichiwedzera kubatanidzwa kwedhaka;
5. Basa rekuparara kwepolymer poda mudhaka rakanyorova:
Kuvandudza kushanda kwekuvaka;
Kuvandudza mafambiro emvura;
Wedzera thixotropy uye sag resistance;
kuvandudza kubatana;
Nguva yekutumira: Oct-24-2022