Redispersible Polymer Powder (RDP)ndeyepamusoro molecular polymer powder, inowanzogadzirwa kubva ku polymer emulsion nekupfapfaidza kuomesa. Iyo ine pfuma ye redispersibility mumvura uye inoshandiswa zvakanyanya mukuvaka, machira, adhesive uye mamwe minda. Iyo nzira yekuita yeRedispersible Polymer Powder (RDP) inonyanya kuwanikwa nekugadzirisa simende-yakavakirwa zvinhu, kuvandudza simba rekubatanidza, nekuvandudza mashandiro ekuvaka.
1. Yekutanga kuumbwa uye zvivakwa zveRedispersible Polymer Powder (RDP)
Iyo yakakosha kuumbwa kweRedispersible Polymer Powder (RDP) ndeye polymer emulsion, iyo inowanzo polymerized kubva kumamonomers senge acrylate, ethylene, uye vinyl acetate. Aya mamorekuru epolymer anoumba zvidimbu zvakanaka kuburikidza neemulsion polymerization. Munguva yekupfapfaidza kuomesa, mvura inobviswa kuita amorphous powder. Idzi hupfu hunogona kuparadzirwa mumvura kuti dzigadzire dzakagadzikana dzepolymer dispersions.
Iwo makuru maitiro eRedispersible Polymer Powder (RDP) anosanganisira:
Kunyungudika kwemvura uye kudzoreredzwazve: Inogona kukurumidza kuparadzirwa mumvura kuita yunifomu polymer colloid.
Yakanatsiridzwa zvimiro zvemuviri: Nekuwedzera Redispersible Polymer Powder (RDP), iyo yekubatanidza simba, kusimba kwesimba uye kukanganiswa kupikisa kwezvigadzirwa zvakaita semajasi uye madhaka zvinovandudzwa zvakanyanya.
Kuramba kwemamiriro ekunze uye kuramba kwemakemikari: Mamwe marudzi eRedispersible Polymer Powder (RDP) ane hunyanzvi hwekupikisa UV mwaranzi, mvura nekuora kwemakemikari.
2. Mechanism yekuita yeRedispersible Polymer Powder (RDP) mune simende-yakavakirwa zvinhu.
Kuvandudzwa kwesimba rekubatanidza Basa rakakosha rinoitwa neRedispersible Polymer Powder (RDP) mune simende-yakavakirwa zvinhu kusimudzira kusimba kwayo kwekubatana. Kudyidzana pakati pesimende paste uye polymer dispersion system inogonesa mapolymer particles kuti anyatsonamira pamusoro pemasimende esimende. Mune microstructure yesimende mushure mekuoma, mamorekuru epolymer anowedzera simba rekubatanidza pakati pezvimedu zvesimende kuburikidza nekuita kwekubatana, nekudaro anovandudza kusimba kwekubatanidza uye kudzvinyirira simba resimende-yakavakirwa zvinhu.
Kuvandudzwa kuchinjika uye kutsemuka kuramba Redispersible Polymer Powder (RDP) inogona kuvandudza kuchinjika kwesimende-yakavakirwa zvinhu. Kana simende-yakavakirwa zvinhu zvakaomeswa uye kuomeswa, mamorekuru epolymer mune simende paste anogona kugadzira firimu kuwedzera kuoma kwezvinhu. Nenzira iyi, dhaka resimende kana kongiri haigone kutsemuka kana ichiiswa kune masimba ekunze, izvo zvinovandudza kupesana nekutsemuka. Uye zvakare, kuumbwa kwepolymer firimu kunogonawo kuvandudza kuchinjika kwesimende-yakavakirwa zvinhu kune yekunze nharaunda (senge shanduko yekunyorova, shanduko yekushisa, nezvimwewo).
Kugadzirisa kushanda kwekuvaka Kuwedzerwa kwe redispersible glue powder kunogonawo kuvandudza kushanda kwekuvaka kwesimende-based materials. Semuenzaniso, kuwedzera redispersible glue poda kune yakaoma-yakasanganiswa dhaka inogona kuvandudza zvakanyanya kushanda kwayo uye kuita kuti basa rekuvaka rive nyore. Kunyanya mumatanho akadai sekupenda madziro uye kumisa mataira, iyo fluidity uye kuchengetwa kwemvura kwe slurry kunosimudzirwa, kudzivirira kutadza kwekubatanidza kunokonzerwa nekubuda kwemvura nguva isati yakwana.
Kuvandudza kudzivirira kwemvura uye kusimba Kugadzirwa kwepolymer firimu kunogona kudzivirira kupinza kwemvura, nekudaro kunatsiridza kushorwa kwemvura kwezvinhu. Mune dzimwe nzvimbo dzakanyorova kana dzakanyorova nemvura, kuwedzerwa kwemapolymers kunogona kunonoka kuchembera kwesimende-yakavakirwa zvinhu uye kuvandudza kushanda kwavo kwenguva refu. Uye zvakare, kuvepo kwemapolymers kunogona zvakare kuvandudza chando kuramba, kemikari corrosion resistance, nezvimwewo, uye kuwedzera kusimba kwechimiro chekuvaka.
3. Kushandiswa kweRedispersible Polymer Powder (RDP) mune dzimwe nzvimbo
Dry-mixed dhaka Mumatope akaoma-akavhenganiswa, kuwedzerwa kweRedispersible Polymer Powder (RDP) kunogona kuwedzera kunamatira, kupikisa kuputika uye kushanda kwekuvaka kwedhaka. Kunyanya muminda yekunze kwemadziro ekudzivirira system, tile bonding, nezvimwewo, kuwedzera huwandu hwakakodzera hweRedispersible Polymer Powder (RDP) kune yakaoma-yakasanganiswa dhaka formula inogona kuvandudza zvakanyanya kushanda uye kuvaka kwemhando yechigadzirwa.
Architectural coatings Redispersible Polymer Powder (RDP) inogona kukwidziridza kunamatira, kushomeka kwemvura, kuramba kwemamiriro ekunze, nezvimwe zvemachira ekuvaka, kunyanya mumajasi ane kukwirira kwekuita zvinodiwa sekunze kwemadziro ekunze uye pasi pasi. Kuwedzera Redispersible Polymer Powder (RDP) inogona kuvandudza firimu rayo kuumbwa uye kunamatira uye kuwedzera hupenyu hwebasa rejasi.
Adhesives Mune zvimwe zvakakosha zvinonamira zvigadzirwa, senge mataira anonamira, gypsum adhesives, nezvimwewo, kuwedzera Redispersible Polymer Powder (RDP) inogona kuvandudza zvakanyanya simba rekubatanidza uye kuvandudza chiyero chinoshanda uye mashandiro ekuvaka kweanonamira.
Zvishandiso zvisingapindi mvura Mumidziyo isingapinde mvura, kuwedzerwa kwemapolymers kunogona kuumba yakagadzikana firimu layer, zvinobudirira kudzivirira kupinda kwemvura, uye kuwedzera kusapinda kwemvura. Kunyanya mune dzimwe nzvimbo dzepamusoro-dzinodiwa (zvakadai sepasi pekudzivirira mvura, denga rekudzivirira mvura, nezvimwewo), kushandiswa kweRedispersible Polymer Powder (RDP) kunogona kuvandudza zvakanyanya maitiro ekudzivirira mvura.
The mechanism of action ofRDP, kunyanya kuburikidza neayo redispersibility uye polymer film-forming character, inopa mabasa akawanda musimende-based materials, zvakadai sekusimudzira simba rekubatanidza, kuvandudza kushanduka, kuvandudza mvura inodzivirira, nekugadzirisa kushanda kwekuvaka. Mukuwedzera, inoratidzawo kushanda kwakanakisisa muminda yakaoma-yakavhenganiswa dhaka, magadzirirwo ekugadzira, adhesives, mvura isina mvura, etc. Nokudaro, kushandiswa kweRedispersible Polymer Powder (RDP) muzvigadzirwa zvemazuva ano zvekuvaka zvakakosha zvikuru.
Nguva yekutumira: Feb-17-2025