Viscosity chinhu chakakosha pfuma parameter ye cellulose ether. Kazhinji kutaura, iyo yakakwirira viscosity, zviri nani kuchengetedza mvura kwegypsum mortar. Nekudaro, iyo yakakwira iyo viscosity, iyo yakakwira molecular huremu hwe cellulose ether, uye kunyungudika kwe cellulose ether kunoderera zvinoenderana. Iyo yakakwirira iyo viscosity iri, iyo inonyanya kuoneka iyo thickening mhedzisiro iri, asi haina kuenzana. Iyo yakakwirira iyo viscosity, iyo yakanyanya kunamira dhaka rakanyorova richava, mukuvaka, kuita kwekunamatira scraper uye yakakwirira kunamatira kune substrate. Asi hazvibatsiri kuwedzera simba rekugadzirisa dhaka rakanyorova pacharo. Mukuwedzera, panguva yekuvaka, kushanda kwemvura yakanyorova anti-sagging performance haisi pachena. Kusiyana neizvi, imwe yakagadziridzwa Methyl cellulose ine yakaderera kusvika pakati viscosity yakaratidza kuvandudzwa kwesimba rechimiro chedhaka rakanyorova. Zvivako zvemadziro ekuvaka zvinonyanya zvivakwa zveporous, zvine kunyura kwemvura. Uye iyo gypsum yekuvaka zvivakwa zvinoshandiswa pakuvaka madziro, mushure mekuwedzera mvura modulation pamadziro, hunyoro huri nyore kutorwa nemadziro, zvichiita kuti gypsum ishaikwe hunyoro hunodiwa kune hydration, zvichikonzera kunetsa mukupura kuvaka uye kuderedza chisungo chesimba. , saka kune mitswe, hollow dhiramu, spalling uye mamwe matambudziko emhando. Kuvandudza kuchengetwa kwemvura kwezvinhu zvekuvaka gypsum kunogona kugadzirisa dambudziko remhando yekuvaka uye kugadzirisa simba rekubatanidza nemadziro. Naizvozvo, mumiriri wekuchengetedza mvura ave chimwe chezvakakosha zvekuwedzera zve gypsum zvekuvaka zvinhu.
Kuti ufambise kuvaka, zvivakwa zvehupfu zvekuvaka senge plaster, adhesive plaster, jointing plaster uye plaster putty inoshandiswa, uye gypsum retarder inowedzerwa mukugadzirwa kuti iwedzere nguva yekuvaka yeplaster paste, nekuti iyo hydration process yehemihydrate. gypsum inodziviswa nekuwedzera retarder kune gypsum, iyi mhando yegypsum paste inoda kuramba iri pamadziro kwemaawa 1-2 isati yagadzika, uye mazhinji emadziro ane midziyo yekunyudza mvura, kunyanya, nyowani lightweight madziro zvinhu senge zvidhinha madziro, aerated kongiri madziro, perforated thermal insulation panels, saka kuita mvura-yekuchengetedza kurapwa kwegypsum slurry, kudzivirira kutamiswa kweimwe yemvura inoyerera kumadziro, inoita kuti gypsum paste iome kana kushomeka kwemvura, iyo hydration haina kupera. , inokonzeresa iyo gypsum uye madziro epamusoro pekubatana nzvimbo yekuparadzaniswa, iyo goko. Kuwedzera mvura-inochengetedza mumiriri ndiko kuchengetedza hunyoro huri mugypsum paste, kuve nechokwadi chekuita kwe hydration yegypsum paste pane interface, nekudaro kuve nechokwadi chekusimba kwechisungo. Izvo zvakajairika zvinochengeta mvura zvinoshandiswa selulosi ethers, senge Methyl cellulose (MC) , hypromellose (HPMC, hydroxyethyl methyl cellulose (HEMC), nezvimwewo. Uye zvakare, polyvinyl doro, sodium alginate, yakagadziridzwa starch, diatomite uye isingawanzo pasi poda inogona kushandiswa kuvandudza kuchengetedza kwemvura.
Nguva yekutumira: Jul-26-2023