Zvinohydroxypropyl carboxymethyl cellulosemusika wekutengesa uchiwedzera, mutengo hauna kuenzana, nzira yekukurumidza kujekesa kunaka kwehydroxypropyl methyl cellulose rave dambudziko rakakosha! Saka sei kutonga kunaka kwehydroxypropyl methylcellulose? Chinhu chekutanga kutarisa kuchena kwehydroxypropyl cellulose; Kunyangwe kuchena hakugone kujeka kana HPMC yakakodzera kushandiswa, asi mukugadzirisa kwekugadzirisa kunewo vamwe vagadziri vakaipa vachawedzera whitening agent, ichakuvadza kunaka kwayo. Asi kazhinji kutaura, ruzhinji rweyakanakisa cellulose ether kuchena kuri nani.
Chechipiri, kuona kunaka kwehydroxypropyl methyl cellulose: hydroxypropyl carboxymethyl cellulose particle size ye80-100 mesh, 120 mesh zvishoma, hydroxyethyl cellulose HECHPMC inenge 100 mesh. HPMC yevakawanda 60-80 mesh, general methyl cellulose yakapfava, iyo iri nani kupararira.
Mhinduro ye cellulose ether kujeka:HPMCkuisa mumvura kuti ibudise yakajeka colloid mhinduro, ona iyo yakakwirira kugadziriswa, iyo yakakwirira yekugadzirisa, iyo isinganyunguduse kemikari inodzika.
Kana chigadzirwa chacho chapisa, chinoiswa gelatinized kana kubatanidzwa uye chinobva chanyungudutswa. Iine hydrophobic uye inonyungudika mumvura. Concrete ndiyo kiyi yekubatanidza uye demulsification mbishi yemvura-inodzivirira putty poda. Nheyo yayo yekudzivirira mvura ndeyotevera: Mukuita kwekuwedzera mvura uye kubvongodza redispersible latex powder uye simenti, iyo latex powder inoramba ichidzokera kune yepakutanga emulsion fomu, uye latex particles inoparadzirwa zvakaenzana mumucheka we simenti. Mushure mokunge simenti inosangana nemvura, iyo hydration reaction inotanga, uye Ca (OH) 2 mhinduro inosvika pakuzara uye inogadzirisa makristasi, uye panguva imwechete, ettringite crystals uye calcium silicate hydrate colloids inogadzirwa. Latex particles anoiswa pane gel uye unhydrated simende zvimedu. Nekufambira mberi kwekuita kwe hydration, zvigadzirwa zve hydration zviri kuwedzera, uye latex zvimedu zvinounganidzwa zvishoma nezvishoma mukushaikwa kwezvinhu zvisingaite senge simende, uye zvinogadzira padhuze kuunganidza layer pamusoro pesimende gel. Nekuda kwekudzikisira zvishoma nezvishoma kwemvura yakaoma, Iyo yakasimba yakarongedza yakadzokororwazve latex zvimedu mumagel uye voids condense kuti iite inoenderera firimu, ichigadzira musanganiswa wesamende paste inopindirana matrix, uye kubatanidza simende paste nemamwe maaggregates ehupfu.
Nguva yekutumira: Kubvumbi-28-2024