Zuva Rokutumira:11,Dec,2023
Celluloseszviri kuwedzera kushandiswa musimende-based materials, kunyanya mumadhaka akaoma, nekuda kwekunaka kwekuchengetedza mvura uye kuwedzera kwemigumisiro.Naizvozvo, zvimiro uye maumbirwo emagetsi ecellulose ether yakagadziridzwa simenti-yakavakirwa zvinhu uye kudyidzana pakaticellulose ether uye simende slurry zvishoma nezvishoma zvave kutarisisa muminda yekuvaka uye mainjiniya mumakore achangopfuura.Zvakawanda zvekutsvaga zvakawanikwa.Kubatanidza kufambira mberi kwekutsvagisa kumba nekune dzimwe nyika, kuchine matambudziko anotevera mukutsvaga nekushandiswa kwecellulose ether zvakagadziridzwa simende-based zvinhu:
1.Kune marudzi akawanda ecelluloses.Kunyangecelluloses anoshandiswa musimende-based zvinhu zvakakamurwa kuva akawanda marudzi akadai seHEC, HEMC uye HPMC nekuda kwedhigirii ravo rekutsiva.Mhando imwe chete yecellulosesvane misiyano yakawanda muchimiro chemorekuru, huremu hwemamorekuru, dhigirii rekutsiva kana zvinotsiva zvemukati.Parizvino, kutsvagisa kwakawanda kumba nekune dzimwe nyika kunotarisa pane imwe kana akati wandeicelluloses.Sarudzo yecellulose ether inogumira kuminda yavo yekushandiswa.The molecular chimiro maitiro ecelluloses hazvina kuratidzwa, uye kumiririra kwavo hakumiriri.Mhedziso ndiyo mhedzisiro isingadzivisike ye "partial substitution", uye pane kupokana uye kukakavara pakati pemhedzisiro yebvunzo.Naizvozvo, zvinodikanwa kunyatso dzidza kurongeka uye zvimiro zvemaitiro uye nzira dzemhando dzakasiyana dzecellulose ether yakagadziridzwa gelling zvinhu.
2.Mabhuku aripo akadzidza maitiro ecelluloses pane zvakasiyana-siyana zvesimende zvinhu, uye akaita imwe ongororo yemagadzirirwo ayo, asi akatadza kuona hukama huripo pakati peiyo molecular chimiro che.celluloses uye zvinhu zvemodified simenti slurry.nguva dzose, uye pane misiyano iri pachena mumaitiro avo.Pakaticellulose ether-yakagadziridzwa simende-yakavakirwa zvinhu, pane zvishoma zvidzidzo zvezvishandiso zvine akasiyana mamorekuru zvimiro, izvo zvisingakwanisi kunyatso kutsanangura magadzirirwo ezvimiro zvakasiyanacellulose ether-modified sement-based materials..Kunyange zvazvo mamwe mabhuku akawana izvozvocelluloses nemasikirwo akasiyana-siyana ane maitiro akasiyana pane hydration ye simenti, zvikonzero zvezvikonzero hazvisati zvanyatsojekeswa.
3.The mechanism of the influence ofcellulose ether pa simenti hydration kinetics inoramba ichienderera mberi ichidzidzwa.Parizvino, maererano nekunonoka hydration mechanism yecellulose ether, kunyange adsorption ichionekwa sechikonzero chaicho chekunonoka hydration yecellulose ether, inowanikwa kuti iyo yakasimba iyo adsorption kugona pakati pe hydration zvigadzirwa uyecellulose ether, iyo inowedzera kunonoka hydration ye simenti.Iyo adsorption mechanism pakaticelluloses uye simende hydration zvigadzirwa, pamwe nezvikonzero zveakasiyana adsorption masimba akasiyanacelluloses uye simende hydration zvigadzirwa, hazvina kuenderera mberi nekudzidzwa.
4.Zvinyorwa zviripo zvinoratidza izvozvocelluloses inogona kukanganisa zvakanyanya chimiro chepore chesimende-yakavakirwa zvinhu.Celluloses Zvinotendwawo kunge zviri pamusoro-zvinoita uye zvine mhepo-inopinza mhedzisiro pane nyowani simende slurries, nekudaro ichiwedzera porosity yeakaomeswa simende slurries.Zvisinei, pesvedzero yecelluloses pamusoro penguva dzose uye maitiro ekugadzira simenti slurry pore saizi yekugovera haiwanzo kukurukurwa.
5. Rheological properties chinhu chakakosha chekushandiswa kwecelluloses mune sement-based materials.Nehurombo, pane zvishoma zvidzidzo pamusoro peiyo rheological properties yecellulose ether yakagadziridzwa simende slurry kumba nekune dzimwe nyika.
Nguva yekutumira: Zvita-11-2023