Kodi ma ufa a latex opangidwanso ndi chiyani?

Redispersible latex powder (RLP), yomwe imadziwikanso kuti redispersible polymer powder (RPP), ndi ufa wopanda madzi, wosabalalika wamadzi womwe umapezeka poyanika poyanika polima latex emulsion. Amakhala ndi tinthu tating'onoting'ono ta polima, nthawi zambiri amakhala ndi chipolopolo chapakati, komanso zowonjezera zosiyanasiyana monga zoteteza, mapulasitiki, ma dispersants, ndi anti-foaming agents. RLP idapangidwa kuti ipititse patsogolo magwiridwe antchito ndi zida za simenti, kuphatikiza zomatira, matope, ma renders, ndi zokutira, powonjezera kumamatira, kusinthasintha, kukana madzi, kugwira ntchito, komanso kulimba.

Kapangidwe ka ufa wa latex wopangidwanso umaphatikizapo njira zingapo:

1. Polima Emulsion Kupanga: Ndondomekoyi imayamba ndi kupanga emulsion ya polima ndi polymerization ya monomers monga vinyl acetate, ethylene, acrylic esters, kapena styrene-butadiene pamaso pa surfactants, emulsifiers, ndi stabilizers. The emulsion polymerization anachita ambiri ikuchitika m'madzi pansi ankalamulira zinthu kupanga khola lalabala dispersions.
2. Utsi Kuyanika: The polima emulsion ndiye pansi kutsitsi kuyanika, ndondomeko kumene emulsion ndi atomized mu m'malovu abwino ndi anayambitsa mu otentha mpweya mtsinje mkati kuyanika chipinda. Kuthamanga kwamadzi kwamadzi kuchokera m'malovu kumayambitsa mapangidwe a tinthu tating'onoting'ono, tomwe timasonkhanitsidwa ngati ufa wouma pansi pa chipinda chowumitsa. Pa kuyanika utsi, zina monga zoteteza colloids ndi plasticizers zikhoza kuphatikizidwa mu polima particles kupititsa patsogolo bata ndi ntchito yawo.
3. Chithandizo cha Particle Surface: Pambuyo poyanika utsi, ufa wa latex womwe ukhoza kupangidwanso ukhoza kuthandizidwa pamwamba kuti usinthe mawonekedwe ake ndi machitidwe ake. Kuchiza kwa pamwamba kungaphatikizepo kugwiritsa ntchito zokutira zowonjezera kapena kuphatikizira zowonjezera zogwirira ntchito kuti zithandizire kumamatira, kukana madzi, kapena kugwirizanitsa ndi zigawo zina mumipangidwe ya simenti.
4. Kupaka ndi Kusunga: Ufa womaliza wosabalalika wa latex umayikidwa m'matumba osamva chinyezi kuti uteteze ku chinyezi komanso kuipitsidwa ndi chilengedwe. Kuyika bwino ndi kusungirako zinthu ndizofunikira kuti pakhale kukhazikika ndi kukhazikika kwa ufa pakapita nthawi.

Redispersible latex powder nthawi zambiri imakhala yoyera kapena yoyera ndipo imakhala ndi kukula kwa tinthu tating'ono, kuyambira ma micrometer angapo mpaka ma micrometer. Imatayika mosavuta m'madzi kuti ipange ma emulsions okhazikika kapena ma dispersions, omwe angaphatikizidwe mosavuta m'mapangidwe a cementitious panthawi yosakaniza ndikugwiritsa ntchito. RLP imagwiritsidwa ntchito kwambiri pantchito yomanga ngati chowonjezera chosunthika chothandizira kukonza magwiridwe antchito, kugwirira ntchito, komanso kulimba kwa zida zosiyanasiyana zomangira ndi kukhazikitsa.