Re-Dispersible polymer hupfuma emulsion akapfapfaidzwa ayo, kana akasanganiswa nemvura kana mvura mudhaka, anoita kupararira kwakagadzikana kwakafanana seyekutanga emulsion. Iyo polymer inoumba chimiro chepolymer network mudhaka, iyo yakafanana neyepolymer emulsion zvivakwa uye inogadzirisa dhaka. Hunhu hwehupfu hwepolymer hunoparara ndehwekuti hupfu uhu hunogona kungoparadzirwa kamwe chete, uye hahuzoparadzwi zvakare kana dhaka richinyorova zvakare mushure mekuoma. Kugadzirwa kwe redispersible polymer poda kwakavandudza zvakanyanya kushanda kwevhu rakaoma dhaka. Mune dhaka rekubatanidza remapanera ekushongedza, kune zvimwe zvinodikanwa zvehuwandu hwezve dispersible polymer latex poda. Kuwedzera kwayo kunonatsiridza flexural simba, crack resistance, adhesion simba, elasticity uye kuoma kwedhaka, izvo zvinogona kudzivirirwa. Mortar shrinkage uye kuputika zvinogonawo kuderedza kukora kwechisungo chekubatanidza. Iyo redispersible polymer latex poda inogona kuvandudza zviri pamusoro zvimiro zvedhaka nekuti inogona kugadzira firimu repolymer pamusoro pezvimedu zvedhaka. Pane pores pamusoro pemufirimu, uye pamusoro pemapores izere nedhaka, iyo inoderedza kushushikana kwepfungwa uye kuderedza simba rekunze. Pasi pechiito chinoburitsa kuzorora pasina kukuvara. Pamusoro pezvo, dhaka rinoumba skeleton yakaoma mushure me simende hydration, uye firimu rinoumbwa nepolymer rinogona kuvandudza kusimba uye kusimba kweskeleton yakaoma, uye iyo inodhindwa zvakare yepolymer latex poda inogona zvakare kuvandudza kusimba kwedhaka.
Iyo yekuzora mhedzisiro pakati peinodzoreredzwa polymer poda particles inoita kuti zvikamu zvedhaka zviyerere zvakazvimirira. Panguva imwecheteyo, ine inductive effect pamhepo, ichipa dhaka compressibility, saka inogona kuvandudza kuvaka uye kushanda kwedhaka. Simba rekumanikidzika repolymer mortar rinoderera nekuwedzera kwehuwandu hwehupfu hwerabha, simba rekushanduka-shanduka rinowedzera nekuwedzera kwehuwandu hwehupfu hwerabha, uye kupeta-kupeta kunoratidza kuderera.
Muedzo unoratidza kuti redispersible latex powder inogona kugadzirisa dhaka uye inogona kuvandudza kushanduka kwedhaka. Redispersible latex poda polymer resin inogona kuvandudza kushanduka kwesimba redhaka, kunyanya iyo yekutanga flexural simba redhaka. Iyo polymer inounganidza mu capillary pores yevhu rakaoma uye inoshanda sekusimbisa. Kuwedzeredzwa kwepolymer hupfu hunogona kuvandudza zvakanyanya kusimba kwechisungo chematope, kunyanya kana uchibatanidza zvinhu zvakasiyana, sekunamatira mataira eceramic. Nekuwedzera kwehuwandu hwehupfu hwerabha, simba rekushandura uye simba rekunamatira rinowedzerwawo.
Kubatanidza iyo redispersible polymer poda inogona kuvandudza zvakanyanya kuchinjika uye deformation kuramba kwechinhu, saka inobatsira kune inoshanduka simba uye kubatanidza simba rechinhu. Mushure mekuwedzera iyo polymer kune simenti matrix, iyo yekusimba simba inovandudzwa zvakanyanya. Munguva yekuoma kwe simenti, pachava nemakomba akawanda mukati. Makomba aya akazadzwa nemvura pakutanga. Kana simende yapora uye yakaomeswa, zvikamu izvi zvinova mapako. Zvinowanzo fungwa kuti aya makabati ndiwo asina simba matrix e simenti. chikamu. Kana iyo redispersible polymer poda iri musimende sisitimu, hupfu uhwu hunobva hwapararira nekudzika munzvimbo ine mvura yakawanda, ndiko kuti, mumakomba aya. Mushure mokunge mvura yaoma. Iyo polymer inoumba firimu yakatenderedza mhango, nekudaro ichisimbisa aya asina simba mapoinzi. Kureva, kuwedzera diki redispersible latex poda inogona kuvandudza zvakanyanya kusimba kwechisungo.
Nguva yekutumira: Oct-25-2022