Sechikamu chakakosha chezvivakwa zvemazuva ano zvekuvaka, redispersible polymer powders (RDP) inoita basa rakakosha mumashandisirwo mazhinji senge madhaka, putties, grouts, mataira anonamira uye ekupisa kwekushisa masisitimu.Iyo firimu-kugadzira kugona kweRDP chinhu chakakosha chinokanganisa kunaka kwechigadzirwa chekupedzisira.The redispersibility yehupfu mushure mekuchengetedza, kutakura uye kusanganisa kwakakosha.Ichi ndicho chikonzero nzira dzakadzama uye dzakasimba dzekuyedza dzakakosha kuti uve nechokwadi chekukodzera uye kushanda kwezvigadzirwa zveRDP.
Imwe yemiyedzo yakakosha yeRDP firimu-kugadzira kugona ndeyeupfu redispersible emulsion poda firimu-inogadzira nzira yekuyedza.Iyi nzira yekuyedza inoshandiswa zvakanyanya mukuongororwa kwemhando yechigadzirwa uye R&D maitiro ezvigadzirwa zveRDP.Iyo firimu-yekugadzira bvunzo nzira yehupfu inodzokororwa polymer hupfu inzira yakapusa uye iri nyore yekuyedza, inogona kunyatso ongorora kugona kwefirimu-kuumba kwezvigadzirwa zveRDP.
Kutanga, iyo redispersibility yehupfu inofanira kuongororwa isati yaitwa firimu rekuita bvunzo.Kusanganisa hupfu nemvura uye nekukuchidzira kuparadzirazve zvimedu zvepolymer kunovimbisa kuti hupfu hunoshanda zvakakwana pabvunzo.
Tevere, iyo Powder Redispersible Polymer Powder Firimu Yekuita Yekuyedza Nzira inogona kutangwa.Seti tembiricha uye hunyoro hunyoro hunodiwa kuchengetedza nharaunda yakagadzikana kuti firimu riporese nemazvo.Izvo zvinhu zvinopfapfaidzwa pane substrate pane pre-yakatsanangurwa ukobvu.Iyo substrate zvinhu zvinoenderana nezvinodiwa zvekushandisa.Semuenzaniso, dhaka rekushandisa rinogona kuda kongiri substrate.Mushure mokupfapfaidza, zvinhu zvinotenderwa kuomeswa kwenguva yakatarwa, mushure mezvo kugona kugadzira firimu kunogona kuongororwa.
Iyo Powder Redispersible Emulsion Powder Firimu Yekugadzira Yekuyedza Nzira inoongorora akati wandei.Izvi zvinosanganisira kupera kwepamusoro, kunamatira uye kushanduka kwefirimu.Kupera kwepamusoro kunogona kuongororwa nekuongorora kana kushandisa maikorosikopu.Kunamatira kwefirimu kune substrate kwakatemwa kushandisa tepi bvunzo.Kusungirirwa kwakakwana kunoratidzwa kana tambo ye tepi inoshandiswa kune chinhu uye firimu inoramba yakanamatira kune substrate mushure mokunge tepi yabviswa.Firimu kuchinjika kunogona zvakare kuongororwa uchishandisa tepi bvunzo.Tambanudza firimu usati wabvisa tepi, kana ikaramba yakanamatira kune substrate, inoratidza chiyero chakakodzera chekugadzirisa.
Zvakakosha kutevedzera nzira dzekuyedza dzakakwana kuti uve nechokwadi chemhedzisiro.Zviitiko zvakati wandei zvekuyedzwa kwemafirimu ekugadzira zvinofanirwa kumisikidzwa kubvisa mutsauko pakati peakasiyana mabhechi ebvunzo.Izvi zvinosanganisira maitiro ekugadzirira, tembiricha, humidity, ukobvu hwekushandisa uye nguva yekurapa.Iyo tepi bvunzo inodawo kuitwa nedzvinyiriro imwechete kuti uwane mibairo inofananidzwa.Pamusoro pezvo, midziyo yekuyedza inofanirwa kuverengerwa isati yaedzwa.Izvi zvinovimbisa kuyerwa kwakarurama uye kwakaringana.
Pakupedzisira, kududzirwa kwakarurama kwemigumisiro yePowder Redispersible Emulsion Powder Film Formation Test Method inokosha.Mhedzisiro inowanwa neiyo firimu yekugadzira bvunzo nzira inofanirwa kuenzaniswa neyakagadzikwa zviyero zveicho chinhu chekushandisa.Kana iyo firimu inosangana nezvinodiwa uye zvakatemwa, hunhu hwayo hunonzi hunogamuchirwa.Kana zvisina kudaro, chigadzirwa chinogona kuda kumwe kunatswa kana kugadziridzwa kuti ivandudze maitiro ayo ekugadzira firimu.Mhedzisiro yemuyedzo inogona zvakare kubatsira mukugadzirisa uye kuona chero nyaya dzekugadzira kana kukanganisa kwechigadzirwa.
Muchidimbu, iyo poda inorasika yepolymer poda yekugadzira firimu nzira yekuyedza inoita basa rakakosha mukuona kushanda kwechigadzirwa chepolymer poda.Sechimwe chezvinhu zvakakosha zvezvivakwa zvemazuva ano zvekuvaka, kugona kugadzira firimu reRDP kwakakosha pakuita kwayo.Kuve nechokwadi chekuti iyo RDP yekugadzira firimu kugona inosangana neinodiwa zvivakwa kwakakosha kukwenenzvera kuita uye hupenyu hwechigadzirwa chekupedzisira.Kutevedzera kwakaringana kumaitiro ekuyedza kwakakosha kuti uwane mhedzisiro inowirirana.Kududzira kwakaringana kwemhedzisiro yebvunzo kunogona kupawo ruzivo rwakakosha mukugadzira uye kugadzira zvemhando yepamusoro zvigadzirwa zveRDP.
Nguva yekutumira: Jul-03-2023