Kugwiritsa ntchito dispersible polima ufa mu zomatira matailosi

Re-Dispersible polima ufandi ma emulsions opopera omwe, akasakanizidwa ndi madzi kapena madzi mumtondo, amapanga kubalalitsidwa kokhazikika komweko monga emulsion yoyambirira. Polima amapanga polima maukonde dongosolo mu matope, amene ali ofanana ndi polima emulsion katundu ndi modifies matope. Makhalidwe a ufa wa polima wotayika ndikuti ufa uwu ukhoza kumwazikana kamodzi kokha, ndipo sudzabalalitsidwanso pamene matope ayamba kunyowa kachiwiri atatha kuumitsa. Kupangidwa kwa redispersible polima ufa kwathandizira kwambiri ntchito ya mtondo wouma. Mu chomangira matope kwa mapanelo kukongoletsa, pali zofunika kwambiri kuchuluka kwa redispersible polima latex ufa. Kuphatikizika kwake kumawonjezera mphamvu yosinthika, kukana ming'alu, mphamvu yomatira, kukhazikika komanso kulimba kwa matope, zomwe zitha kupewedwa. Kutsika kwamatope ndi kung'ambika kungathenso kuchepetsa makulidwe a chingwe chomangira. The redispersible polima latex ufa akhoza kusintha pamwamba zimatha matope chifukwa akhoza kupanga polima filimu pamwamba pa matope particles. Pali pores pamwamba pa filimuyi, ndipo pamwamba pa pores amadzazidwa ndi matope, zomwe zimachepetsa kupsinjika maganizo ndi kuchepetsa mphamvu yakunja. Pansi pakuchitapo adzatulutsa chisangalalo popanda kuwonongeka. Kuonjezera apo, matopewo amapanga chigoba cholimba pambuyo pa simenti ya hydration, ndipo filimu yopangidwa ndi polima imatha kusintha kusungunuka ndi kulimba kwa mafupa olimba, komanso ufa wopangidwa ndi polima wopangidwanso ukhozanso kupititsa patsogolo mphamvu zamanjenje zamatope.

The lubricating zotsatira pakati redispersible polima ufa particles zimathandiza kuti zigawo za matope kuyenda paokha. Panthawi imodzimodziyo, imakhala ndi zotsatira zochititsa chidwi pamlengalenga, zomwe zimapangitsa kuti matope azitha kugwedezeka, kotero amatha kupititsa patsogolo zomangamanga ndi ntchito zamatope. Mphamvu yopondereza ya matope a polima imachepa ndi kuchuluka kwa ufa wa rabara, mphamvu ya flexural imawonjezeka ndi kuchuluka kwa zomwe zili mu ufa wa rabara, ndipo chiŵerengero cha kuponderezana chimasonyeza kutsika.

Mayesowa akuwonetsa kuti ufa wopangidwanso wa latex ukhoza kusintha matope ndipo mwachiwonekere ukhoza kusintha kusinthasintha kwa matope. Redispersible latex powder polima utomoni ukhoza kupititsa patsogolo mphamvu yosunthika yamatope, makamaka mphamvu yoyambilira yamatope. Polima aggregates mu capillary pores a matope owuma ndipo amachita monga kulimbikitsa. Kuwonjezera kwa dispersible polima ufa akhoza kwambiri patsogolo chomangira mphamvu ya matope, makamaka pophatikiza zipangizo zosiyanasiyana, monga kumamatira matailosi ceramic. Ndi kuwonjezeka kwa kuchuluka kwa ufa wa rabara, mphamvu ya flexural ndi mphamvu zomatira zimawonjezekanso.

Kuphatikiza pa redispersible polima ufa kumatha kusintha kwambiri kusinthasintha kwachilengedwe komanso kukana kwa zinthu, motero kumathandizira kuti zinthu zikhale zolimba komanso zomangika. Pambuyo powonjezera polima ku matrix a simenti, mphamvu zamakokedwe zidzasintha kwambiri. Panthawi yowumitsa simenti, padzakhala mabowo ambiri mkati. Mabowowa amadzazidwa ndi madzi pachiyambi. Simentiyo ikachiritsidwa ndi kuuma, mbali zimenezi zimakhala zibowo. Nthawi zambiri zimaganiziridwa kuti mabowowa ndi ofooka a matrix a simenti. gawo. Pamene redispersible polima ufa uli mu dongosolo simenti, ufa amenewa nthawi yomweyo kumwazikana ndi kuganizira m'dera madzi olemera, ndiko kuti, mu mphanga izi. Madzi akauma. Polima imapanga filimu kuzungulira mapanga, potero kumalimbitsa mfundo zofooka izi. Ndiko kuti, kuwonjezera pang'ono pang'ono ya ufa wa latex wowonjezera kungathe kupititsa patsogolo mphamvu ya mgwirizano.