Redispersible polima ufa ndi chimodzi mwazinthu zomwe zimagwiritsidwa ntchito pomanga ndi mafakitale ena. Kusinthasintha kwake, kuchita bwino komanso chuma chake kumapangitsa kukhala chisankho chodziwika pamapulogalamu ambiri. Komabe, ndi zosankha zambiri zomwe mungasankhe, zitha kukhala zovuta kwa ogwiritsa ntchito kuzindikira ndikusankha chinthu choyenera pazosowa zawo. M'nkhaniyi, tikambirana zinthu zofunika kuziganizira musanasankhe redispersible polima ufa.
1. Kumvetsetsa Redispersible Polima Ufa
Redispersible polima ufa ndi youma ufa akapezedwa kupopera mbewu mankhwalawa zosiyanasiyana polima emulsions mu kusakhazikika organic solvents ndiyeno kuyanika pansi zinthu zinazake. Redispersible polima ufa makamaka amapangidwa ndi polima base zinthu, reactive binder, plasticizer ndi inorganic filler. Amagwiritsidwa ntchito ngati binder, filimu yakale komanso yokhuthala muzinthu zosiyanasiyana monga simenti ndi gypsum zochokera, machitidwe oletsa madzi ndi matope.
2. Mapangidwe a ufa wa polima wopangidwanso
Kwenikweni, kapangidwe ka ufa wa polima wopangidwanso ndi chinthu chofunikira kwambiri chomwe chimakhudza mawonekedwe a ufawo komanso kukwanira kwake pakugwiritsa ntchito. Choncho, mankhwala a polima ayenera kuganiziridwa musanasankhe mankhwala. Ma polima ambiri opangidwanso ndi opangidwa ndi ethylene vinyl acetate (EVA) ndi vinyl acetate ethylene (VAE), omwe ali ndi katundu wosiyanasiyana komanso mapindu.
Ma polima a EVA redispersible ndi osinthika kwambiri, amawonjezera kukhazikika kwa chinthu chomaliza, ndipo amapereka kumamatira kwabwino komanso kukana nyengo. Kumbali ina, ma polima opangidwanso a VAE ali ndi mphamvu zambiri komanso kukana madzi bwino kuposa ma polima a EVA, kuwapangitsa kukhala oyenera kugwiritsa ntchito panja. Ma polima a Acrylic ali ndi digiri yapamwamba yomatira komanso yogwirizana ndi zida zina zomangira.
3. Thupi katundu wa redispersible polima ufa
Zomwe zimapangidwira za ufa wopangidwa ndi polima ziyenera kumveka bwino musanasankhe zofunikira. Zinthu izi zikuphatikizapo kugawa kwa tinthu, gloss, mtundu ndi kachulukidwe wochuluka wa ufa. Makhalidwewa amakhudza ntchito, processability ndi maonekedwe a chomaliza.
The tinthu kukula kugawa kwa redispersible polima ufa n'kofunika kwambiri chifukwa chimatsimikizira mlingo wake wa kubalalitsidwa mu gawo lapansi. Kuwongolera mosamalitsa kukula kwa tinthu panthawi yopanga ndikofunikira kuti muwonetsetse kuti mawonekedwe a ufa ali ofanana. Kuchulukirachulukira kwa ufa kumakhudza kusungidwa kwake, kunyamula ndi kagwiridwe kake.
4. Ukadaulo wogwiritsa ntchito
Kasankhidwe ka ufa wopangidwanso wa polima uyenera kuganizira zaukadaulo wogwiritsa ntchito. Mtundu uliwonse wa ufa wa polima wopangidwanso uli ndi zinthu zosiyanasiyana zomwe zimapangitsa kuti ufa wina ukhale wogwirizana ndi njira zina zogwiritsira ntchito kuposa zina. Mwachitsanzo, ufa wocheperako ndi woyenerera popopera, pomwe ufa wowoneka bwino kwambiri ungafunike kuwongoleredwa pamanja.
5. Kugwirizana kwa redispersible polima ufa ndi zipangizo zina
Kugwirizana ndikofunikira posankha polima polima ufa woyenera. Musanasankhe ufa wapadera, ndikofunikira kuyesa kuyanjana kwake ndi zinthu zina zomwe zimagwiritsidwa ntchito pomaliza, mwachitsanzo, ufa wosankhidwa uyenera kumangiriza mopanda simenti ndi zomangira zina.
6. Zofunikira zogwirira ntchito
Zomwe zimafunidwa za chinthu chomaliza zimatsimikizira kusankha kwa ufa wa polima woyenera. M`pofunika mwachindunji thupi ndi mankhwala zimatha redispersible polima ufa, kuphatikizapo interfacial mavuto, pH, galasi kusintha kutentha, ndi modulus wa elasticity.
Kuzindikira ndikusankha ufa wa polima woyenera ndi njira yofunika kwambiri yomwe iyenera kuganizira za kapangidwe ka mankhwala a ufa, mawonekedwe akuthupi, njira zogwiritsira ntchito, kaphatikizidwe ndi magwiridwe antchito. Zinthu zomwe ziyenera kuganiziridwa ndi kugawa kukula kwa tinthu, kachulukidwe kachulukidwe ndi gloss. Pomaliza, ndikofunikira kuzindikira zinthu zomwe zikuyenera kugwiritsidwa ntchito, monga kukhazikika, kukana kwanyengo, komanso kugwirizana ndi zida zina zomangira. Poganizira izi, ogwiritsa ntchito amatha kusankha ufa wopangidwanso wa polima womwe umakwaniritsa zofunikira zawo, umapereka magwiridwe antchito abwino, ndikuthandizira zolinga zawo zonse.
Nthawi yotumiza: Aug-25-2023