Hydroxypropyl methyl cellulose
Kuisa bvunzo yenguva
Nguva yekumisikidza kongiri inonyanya kuenderana nenguva yekumisikidza simende, aggregate mhedzisiro haina kukura, saka nguva yekumisikidza yedhaka inogona kushandiswa panzvimbo yekudzidza kweHPMC yepasi pemvura isiri-kupararira kongiri yekumisikidza nguva, pesvedzero yemusanganiswa nekuda kweiyo nguva yekumisikidzwa nemvura-simende reshiyo yedhaka, simende jecha reshiyo, saka kuti uongorore chiyero chemotarcement uye chiyero chemvura HP, pesvedzero yenguva yekumisikidza HP. yedhaka inoda kugadziriswa.
HPMC is a macromolecule linear structure, ine hydroxyl boka pane inoshanda boka, iyo inogona kuumba hydrogen zvisungo nemamorekuru emvura inosanganiswa uye kuwedzera viscosity yemvura inosanganiswa. HPMC refu molecular cheni achakwezva mumwe, kuitira kuti HPMC mamorekuru intertwine pamwe chete kuumba samambure chimiro, simende, kusanganisa mvura akaputirwa. Nekuti HPMC inoumba network chimiro chakafanana neyakaonda firimu uye kuputira simende, ichanyatso kudzivirira kubuda kwehunyoro mudhaka, kutadzisa kana kudzikisa hydration rate yesimende.
Muedzo wekuteura mvura
Chiitiko chekubuda kwemvura yedhaka chakafanana neyekongiri, izvo zvinokonzeresa kugadzikana kwakakomba, zvinotungamira kuwedzera kweyero yemvura-simende yekumusoro kwe slurry, uye kuita iyo yepamusoro soro ye slurry ine shrinkage yakakura yepurasitiki kana kunyange kuputika padanho rekutanga, uye kusimba kweiyo nzvimbo yepasi ye slurry haina kusimba. Kubva pakuedza, zvinogona kuonekwa kuti kana huwandu hwekusanganiswa huri pamusoro pe0.5%, hapana chiitiko chekubuda kwemvura. Izvi zvinodaro nekuti rinhiHPMCinosanganiswa mudhaka, HPMC ine firimu kuumbwa uye network dhizaini, pamwe adsorption yehydroxyl pane refu cheni ye macromolecules, kuitira kuti simende mudhaka uye kusanganisa mvura kuumba flocculation, kuve nechokwadi chimiro chakagadzikana chemuviri wedhaka. Mushure mekuwedzera HPMC mudhaka zvakare, akawanda akazvimiririra madiki mabhuru achaumbwa. Aya mabhuru anozogovaniswa zvakaenzana mudhaka uye anotadzisa kuiswa kweaggregate. HPMC iyo tekinoroji kuita kwesimende yakavakirwa zvinhu zvine simba rakakura, rinowanzoshandiswa kugadzirira senge yakaoma dhaka, polymer dhaka uye zvimwe zvitsva simende based composite zvinhu, kuitira kuti ive yakanaka kuchengetedza mvura, plasticity.
Nguva yekutumira: Kubvumbi-26-2024