Maererano nechiyero chakasiyana, kushandiswa kweredispersible polymer podakugadzirisa iyoyakaoma yakasanganiswa dhakainogona kuvandudza kusimba kwechisungo neakasiyana-siyana substrates, uye kuvandudza kuchinjika uye deformability yedhaka, kukotama simba, kupfeka kuramba, kuoma, kubatanidza simba uye density, kugona kuchengetedza mvura uye kushanda.
Nhamba huru yebvunzo inoratidza kuti huwandu hweRDupfuhaisi iyo yakanyanya kunaka.Kana zvirimo zveRD poda zvanyanya kuderera, zvinongoridza imwe plasticizing mhedzisiro, asi iyo yekusimudzira maitiro haisi pachena.Kana huwandu hweRD powderyakakurisa, simba richadzikira.Chete kana izvo zviri muRD poda zvine mwero, hazvingo wedzera deformation kuramba, inovandudza kusimba kwesimba uye bond simba, asi zvakare inovandudza iyo permeability uye kuputika kuramba.Huyero yelime nejecha, chiyero chemvura nesamende, giredhi uye rudzi rweaggregate, uye hunhu hweaggregate zvinozokanganisa kushanda kwakazara kwechigadzirwa.
Kufurira kweredispersiblelatexupfupamusoro pesimba redhaka nderekuti kusimba kwesimba uye flexural simba redhaka rinogona kuwedzera zvakanyanya mushure mekuwedzera kweredispersiblepolymerupfu,asi simba rekumanikidza harina kunyanya kuvandudzwa kana kuderedzwa.Nekuda kwekuomesera mhedzisiro yeredispersiblepolymerupfu, kusimba kwemukati uye interfacial bonding kusimba kwedhaka kunovandudzwa, uye kusungirira kusimba pakati pedhaka nesubstrate kunovandudzwa zvikuru.
Kutsemuka kwezvinhu zvinoputika zvinonyanya kukonzerwa nekutadza kusimba, kana iyo tensile stress ichipfuura yayo yekusimba simba kukosha, kuputika kuchaitika.Naizvozvo, kuve neiyo yakakwira tensile simba kukosha ndiyo inodiwa mamiriro ekupikisa kuputika.
Mhedzisiro yacho inoratidza kuti simba rekusimba repolymer-yakagadziridzwa simende dhaka rinowanzowedzera kutanga rozodzikira nekuwedzera kwereshiyo yesimende-simende, izvo zvinoratidza kuti pane yakanaka yekusanganiswa siyana.Chikonzero chekuderera kunowanzo nekuda kwekuwedzera kwekuwedzeraredispersible emulsion powderzvichitungamira kuunzwa kwemabhuru akawandisa, zvichikonzera kudzikira kwesimba rekumanikidza.Naizvozvo, simba rekumanikidza rinofanira kuvandudzwa nekugadzirisa reshiyo yeraimu kune jecha, mvura kune simende, aggregate gradation uye aggregate mhando.Iko kuvandudzwa kwesimba rekusimba, kushanduka kwesimba, kuchinjika, kutsemuka kuramba uye hydrophobicity inogona kuwanikwa nekuwedzera.redispersiblelatexupfu, asi kuwedzera kuwedzera, zviri nani.Kana zviri mukati mehupfu yerabha zvanyanya kuderera, inongoridza imwe plasticizing mhedzisiro, asi iyo yekusimudzira maitiro haisi pachena.Kana huwandu hwehupfu hunodzokororwa hwakanyanya kukura, simba rinoderera.Chete kana zviri mukati meredispersibleupfuiri pakati nepakati, haingo wedzera deformation kuramba, tensile simba uye bond simba, asi zvakare inovandudza permeability uye crack resistance.Huyero hwelime nejecha, chiyero chemvura nesamende, giredhi uye rudzi rweaggregate, uye hunhu hweaggregate zvinozokanganisa kushanda kwakazara kwechigadzirwa.
Nguva yekutumira: Feb-26-2024