Viscosity chinhu chakakosha parameter ye cellulose ether performance.
Kazhinji kutaura, iyo yakakwirira viscosity, zviri nani kuchengetedza mvura kwegypsum mortar. Zvisinei, iyo yakakwirira ye viscosity, iyo yakakwirira ye molecular huremu hwe cellulose ether, uye kuderera kunowirirana mukunyungudika kwayo kuchava nemigumisiro yakaipa pakusimba uye kushanda kwekuvaka kwedhaka. Iyo yakakwirira viscosity, iyo inonyanya kuoneka iyo thickening maitiro padhaka, asi haina kuenzana zvakananga.
Iyo yakakwirira iyo viscosity, iyo yakawanda viscous iyo dhaka rakanyorova richava. Panguva yekuvaka, inoratidzirwa sekunamatira kune scraper uye yakakwirira kunamatira kune substrate. Asi hazvibatsiri zvakanyanya kuwedzera simba rekuumbwa kwevhu rakanyorova pacharo. Mukuwedzera, panguva yekuvaka, iyo anti-sag kuita kwevhu rakanyorova haisi pachena. Pane zvinopesana, imwe yepakati uye yakaderera viscosity asi yakagadziridzwa methyl cellulose ethers ine yakanakisa mashandiro mukuvandudza kusimba kwechimiro chedhaka rakanyorova.
Zvivako zvemadziro ekuvaka kazhinji zvimiro zveporous, uye ese ane simba rekunyudza mvura. Nekudaro, iyo gypsum yekuvakisa inoshandiswa pakuvaka madziro inogadzirwa nekuwedzera mvura kumadziro, uye mvura inonyudzwa nyore nemadziro, zvichikonzera kushaikwa kwemvura inodiwa ye hydration yegypsum, zvichikonzera kunetsa mukuvaka plaster uye kuderedzwa. chisungo simba, zvichikonzera makatsemuka, Quality matambudziko akadai hollowing uye peeling. Kuvandudza kuchengetwa kwemvura kwezvinhu zvekuvaka zvegypsum zvinogona kuvandudza kunaka kwekuvaka uye simba rekubatanidza nemadziro. Naizvozvo, mumiriri wekuchengetedza mvura yave imwe yeakakosha admixtures egypsum zvekuvaka zvinhu.
Kurovera gypsum, yakasungwa gypsum, caulking gypsum, gypsum putty uye zvimwe zvekuvaka poda zvinhu zvinoshandiswa. Kuti zvive nyore kuvaka, gypsum retarders inowedzerwa panguva yekugadzirwa kuti iwedzere nguva yekuvaka yegypsum slurry. Sezvo gypsum yakasanganiswa neRetarder, iyo inhibits iyo hydration process yehemihydrate gypsum. Iyi mhando yegypsum slurry inoda kuchengetwa pamadziro kwe 1 ~ 2H isati yagadzika. Mazhinji emadziro ane zvimiro zvekutora mvura, kunyanya madziro ezvidhina uye aerated kongiri. Wall, porous insulation board uye zvimwe zvinyoro zvitsva zvemadziro zvinhu, saka kurapwa kwemvura kunofanirwa kuitwa pane gypsum slurry kudzivirira kutamiswa kwechikamu chemvura muslurry kumadziro, zvichikonzera kushomeka kwemvura uye isina kukwana hydration kana gypsum. slurry yakaoma. Kukonzera kupatsanurwa uye peeling yejoinhi pakati pegypsum nemadziro emadziro. Kuwedzerwa kwemvura-inochengetedza mumiriri ndeyekuchengetedza hunyoro huri mugypsum slurry, kuve nechokwadi chekuita kwe hydration ye gypsum slurry pane interface, kuitira kuve nechokwadi chesimba rekubatanidza. Inowanzoshandiswa kuchengetedza mvura inonzi cellulose ethers, yakadai semethyl cellulose (MC), hydroxypropyl methyl cellulose (HPMC), hydroxyethyl methyl cellulose (HEMC), nezvimwewo. Uyezve, polyvinyl alcohol, sodium alginate, modified starch, diatomaceous pasi, isingawanzoitiki pasi. hupfu, nezvimwewo zvinogonawo kushandiswa kuvandudza kushanda kwekuchengetedza mvura.
Hazvina mhosva kuti rudzii rwemumiriri wekuchengetedza mvura anogona kunonoka hydration mwero wegypsum kune akasiyana madhigirii, kana dosi retarder rikaramba risina kuchinjika, mumiriri anochengetedza mvura anogona kudzoreredza kuseta kwemaminetsi gumi nemashanu kusvika makumi matatu. Nokudaro, chiyero che retarder chinogona kuderedzwa zvakakodzera.
Nguva yekutumira: Feb-08-2023