Dispersible polymer poda uye zvimwe inorganic binders (zvakadai semende, slaked lime, gypsum, etc.) uye zvakasiyana-siyana aggregates, fillers uye zvimwe zvinowedzera (zvakadai semethyl hydroxypropyl cellulose ether, starch ether, lignocellulose, hydrophobic Agents, nezvimwewo) zvinosanganiswa nemuviri kuita dhaka rakaoma-mix. Kana iyo yakaoma-yakasanganiswa dhaka inosanganiswa nemvura, pasi pekuita kwehydrophilic inodzivirira colloid uye mechanical shearing, latex powder particles ichapararira mumvura.
Nekuda kwehunhu hwakasiyana uye kugadziridzwa kwega yega yakakamurwa latex poda, mhedzisiro iyi zvakare yakasiyana, vamwe vane mhedzisiro yekusimudzira kuyerera, nepo vamwe vane mhedzisiro yekuwedzera thixotropy. Nzira yekushandiswa kwayo inobva kune zvakawanda, kusanganisira simba re latex powder pakubatana kwemvura panguva yekupararira, kushandiswa kweiyo viscosity yakasiyana ye latex powder mushure mekupararira, simba rekudzivirira colloid, uye simba resimende uye bhanhire remvura. Kufuridzirwa kwezvinhu zvinotevera kunosanganisira kuwedzera kwehuwandu hwemhepo yevhu uye kugoverwa kwemhepo inoputika, pamwe chete nekukanganiswa kwezvinowedzera zvayo uye kushamwaridzana nezvimwe zvinowedzera. Naizvozvo, yakasarudzika uye yakakamurwa kusarudzwa kwe redispersible polymer poda inzira yakakosha yekukanganisa kunaka kwechigadzirwa. Pakati pavo, maonero anowanzoonekwa ndeokuti redispersible polymer powder inowanzowedzera mhepo yevhu, zvichiita kuti iite kuvakwa kwedhaka, uye kushamwaridzana uye viscosity yepolymer powder, kunyanya kana colloid inodzivirira yakapararira, kumvura. Kuwedzera kwe α kunobatsira pakuvandudzwa kwekubatana kwevhu rekuvaka, nokudaro kuvandudza kushanda kwevhu. Zvadaro, dhaka rakanyorova rine latex poda dispersion rinoiswa panzvimbo yebasa. Nekudzikiswa kwehunyoro pamatanho matatu - kunyura kwechigadziko, kushandiswa kwesimende hydration reaction, uye kunyungudika kwehunyoro hwepamusoro mumhepo, zvimedu zveresin zvishoma nezvishoma zvinosvika kune, iyo interface inobatana zvishoma nezvishoma, uye inopedzisira yava firimu repolymer rinoenderera. Izvi zvinonyanya kuitika mumapores evhu uye pamusoro peiyo yakasimba.
Zvinofanira kusimbiswa kuti, kuitira kuti muitiro uyu usadzoke, ndiko kuti, kana firimu repolymer risina kuparadzirwa parinosangana nemvura zvakare, iyo inodzivirira colloid ye redispersible polymer powder inofanira kuparadzaniswa kubva kune polymer film system. Iri harisi dambudziko mune alkaline sement mortar system, nekuti ichave saponified nealkali inogadzirwa ne hydration ye simenti, uye panguva imwechete, iyo adsorption yezvinhu zve quartz ichaiparadzanisa zvishoma nezvishoma kubva kune system pasina hydrophilic kudzivirira. Colloid, firimu isinganyunguriki mumvura uye yakaumbwa nekamwe-nguva kuparadzirwa kwe redispersible latex powder, inogona kushanda kwete pasi pemamiriro akaoma, asiwo pasi pemamiriro ekunyudzwa kwenguva refu mumvura. Mune dzisiri-alkaline masisitimu, senge gypsum masisitimu kana masisitimu ane mafirita chete, macolloid anodzivirira achiripo muchikamu chekupedzisira chepolymer nekuda kwechimwe chikonzero, zvichikanganisa kudzivirira kwemvura kwefirimu, asi sezvo masisitimu aya asingashandiswi Muchiitiko chekunyudzwa kwenguva refu mumvura, uye iyo polima ichine yayo yakasarudzika michina, haikanganisi kushandiswa kweiyi polima inopararira.
Nguva yekutumira: Kubvumbi-25-2024