Kuphatikizikako kumakhala ndi zotsatira zabwino pakuwongolera magwiridwe antchito a matope owuma owuma.The redispersible latex ufa amapangidwa ndi wapadera polima emulsion pambuyo kupopera kuyanika.Ufa wouma wa latex ndi tinthu tating'ono tozungulira 80 ~ 100mm tasonkhanitsidwa palimodzi.Tinthu tating'onoting'ono timasungunuka m'madzi ndikupanga kubalalitsidwa kokhazikika kokulirapo pang'ono kuposa tinthu tating'ono ta emulsion, zomwe zimapanga filimu itatha kutaya madzi m'thupi ndi kuyanika.
Njira zosinthira zosinthika zimapangitsa kuti ufa wa latex wogawanikanso ukhale ndi zinthu zosiyanasiyana monga kukana madzi, kukana kwa alkali, kukana kwanyengo komanso kusinthasintha.Ufa wa latex womwe umagwiritsidwa ntchito mumatope ukhoza kupititsa patsogolo kukana, kulimba, kukana kuvala, kumasuka kwa zomangamanga, mphamvu zomangirira ndi mgwirizano, kukana nyengo, kukana kuzizira, kuthamangitsa madzi, mphamvu yopindika ndi mphamvu yosunthika yamatope.Zinthu zozikidwa pa simenti zikangowonjezeredwa ndi madzi a latex ufa, hydration reaction imayamba, ndipo njira ya calcium hydroxide imafika mwachangu ndipo makhiristo amawotchedwa, ndipo nthawi yomweyo, makristasi a ettringite ndi ma gels a calcium silicate hydrate amapangidwa.The particles olimba waikamo pa gel osakaniza ndi unhydrated simenti particles.Pamene hydration zimachitikira, ndi hydration mankhwala kuwonjezeka, ndi polima particles pang'onopang'ono kusonkhana mu capillary pores, kupanga kuli wodzaza wosanjikiza padziko gel osakaniza ndi pa unhydrated simenti particles.The akaphatikizana polima particles pang`onopang`ono kudzaza pores.
Redispersible latex ufa akhoza kusintha katundu wa matope monga flexural mphamvu ndi adhesion mphamvu, 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.Ndipo pansi pa mphamvu yakunja, idzatulutsa mpumulo popanda kusweka.Kuonjezera apo, matopewo amapanga mafupa olimba pambuyo poti simentiyo ikhale ndi hydrated, ndipo polima mu mafupa ali ndi ntchito ya mgwirizano wosunthika, womwe uli wofanana ndi minofu ya thupi la munthu.Nembanemba yopangidwa ndi polima imatha kufananizidwa ndi mafupa ndi minyewa, kuti zitsimikizire kuti kukhazikika komanso kusinthasintha kwa mafupa olimba.kulimba.
M'makina amatope a simenti opangidwa ndi polima, filimu yopitilira ndi yokwanira ya polima imalumikizidwa ndi phala la simenti ndi tinthu tating'onoting'ono ta mchenga, kupangitsa matope onse kukhala owoneka bwino komanso olimba, komanso nthawi yomweyo kupanga maukonde onse otanuka podzaza ma capillaries ndi ma cavities.Chifukwa chake, filimu ya polima imatha kufalitsa bwino kupanikizika ndi kupsinjika zotanuka.Kanema wa polima amatha kutsekereza ming'alu ya matope a polima, kuchiritsa ming'alu ya matope, ndikuwongolera kusindikiza ndi kugwirizana kwa matope.Kukhalapo kwa madera osinthika kwambiri komanso otanuka kwambiri a polima kumathandizira kusinthasintha komanso kukhazikika kwa matope, kupereka mgwirizano ndi machitidwe amphamvu ku mafupa olimba.Pamene mphamvu yakunja ikugwiritsidwa ntchito, njira yofalitsa microcrack imachedwa chifukwa cha kusinthasintha kwabwino komanso kusungunuka mpaka kupanikizika kwakukulu kufikiridwa.The interwoven polima madambwe amakhalanso ngati chotchinga coalescence wa microcracks mu ming'alu olowera.Choncho, redispersible polima ufa amathandizira kulephera kupsinjika ndi kulephera kwa zinthuzo.
Nthawi yotumiza: Mar-10-2023