Upfu hwepolymer hunopararira nezvimwe zvinosunga zvisina kugadzirwa (senge simende, lime yakaslaked, gypsum, nezvimwewo) uye ma aggregates akasiyana-siyana, ma filler nezvimwe zvinowedzera (senge methyl hydroxypropyl cellulose ether, starch ether, lignocellulose, hydrophobic Agents, nezvimwewo) zvinosanganiswa panyama kugadzira dhaka rakasanganiswa rakaoma. Kana dhaka rakasanganiswa nemvura, pasi pesimba re hydrophilic protective colloid uye mechanical shearing, zvidimbu zve latex powder zvinopararira mumvura.
Nekuda kwehunhu hwakasiyana uye shanduko yeupfu hwelatex hwakakamurwa, mhedzisiro iyi yakasiyanawo, mimwe ine simba rekusimudzira kuyerera, nepo mimwe ine simba rekuwedzera thixotropy. Maitiro ekupesvedzera kwayo anobva pazvinhu zvakawanda, kusanganisira simba reupfu hwelatex pakubatana kwemvura panguva yekupararira, simba rehupfu hwelatex hwakasiyana mushure mekupararira, simba recolloid inodzivirira, uye simba resimende nebhandi remvura. Simba rezvinhu zvinotevera zvinosanganisira simba rekuwedzera kwehuwandu hwemhepo mumota uye kupararira kwemabubble emhepo, pamwe ne simba rezvinowedzera zvayo uye kudyidzana nezvimwe zvinowedzera. Naizvozvo, sarudzo yakagadzirirwa uye yakakamurwa yeupfu hwelatex inokamurwa inzira yakakosha yekuchinja mhando yechigadzirwa. Pakati pavo, maonero akajairika ndeekuti upfu hwelatex hunokamurwa hunowanzo kuwedzera huwandu hwemhepo mumota, nokudaro huchizora kuvakwa kwemota, uye simba rehupfu hwelatex, kunyanya kana colloid inodzivirira yapararira, mumvura. Kuwedzera kweα kunobatsira mukuvandudza kubatana kwesimbi yekuvaka, nokudaro zvichivandudza kushanda kwesimbi. Zvadaro, simbi yakanyorova ine latex powder dispersion inoiswa pamusoro pebasa. Nekudzikira kwehunyoro pamatanho matatu - kunyudzwa kwebase layer, kushandiswa kwe hydration ye simende, uye volatilization yehunyoro hwepamusoro mumhepo, resin particles dzinosvika zvishoma nezvishoma pa , interface inosangana zvishoma nezvishoma, uye pakupedzisira inova polymer film inoramba ichienderera mberi. Maitiro aya anowanzoitika muma pores esimbi uye pamusoro pesimbi yakasimba.
Zvinofanira kusimbiswa kuti, kuitira kuti maitiro aya asadzoke, kureva kuti, kana firimu repolymer risingazonyungudutswe parinosangana nemvura zvakare, colloid inodzivirira yeupfu hwepolymer hunonyungudutswa inofanira kuparadzaniswa nehurongwa hwepolymer film. Izvi hazvisi dambudziko muhurongwa hwe alkaline cement mortar, nekuti ichasanganiswa ne alkali inogadzirwa nekunyoroveswa kwesimende, uye panguva imwe chete, kunyungudutswa kwezvinhu zve quartz kuchaiparadzanisa zvishoma nezvishoma nehurongwa pasina dziviriro inonyunguduka. Colloid, firimu risinganyunguduke mumvura uye rinoumbwa nekupararira kamwe chete kweupfu hwe latex hunonyungudutswa, rinogona kushanda kwete chete mumamiriro akaoma, asiwo mumamiriro ekunyudzwa kwenguva refu mumvura. Mumasystem asiri e alkaline, akadai se gypsum systems kana masystem ane fillers chete, ma colloids ekudzivirira achiripo mufirimu rekupedzisira re polymer nekuda kwechimwe chikonzero, zvichikanganisa kuramba kwemvura kwefirimu, asi sezvo masystem aya asingashandiswi Kana yakanyudzwa mumvura kwenguva refu, uye polymer ichine hunhu hwayo hwemakanika, haikanganisi kushandiswa kwe polymer powder inopararira mumasystem aya.
Nguva yekutumira: Kubvumbi-25-2024