Soluble hydroxypropyl methyl cellulose (HPMC) ndi mtundu wa ether wosakhala ndi ionic cellulose, womwe umapangidwa kuchokera ku cellulose yachilengedwe ya polima kudzera mumndandanda wamankhwala.Hypromellose (HPMC) ndi ufa woyera umene umasungunuka m'madzi ozizira kuti ukhale wowonekera, wowoneka bwino.Lili ndi katundu wa thickening, adhesion, kubalalitsidwa, emulsification, filimu kupanga, kuyimitsidwa, adsorption, gelation, pamwamba ntchito, posungira madzi ndi colloid chitetezo.Kusunga madzi ndi chinthu chofunikira kwambiri cha hypromellose HPMC, chomwe chimakhudzidwanso ndi opanga matope ambiri osakanikirana ndi madzi ku China.Zomwe zimakhudza kusungidwa kwa madzi kwa matope osakanikirana ndi madzi ndi kuchuluka kwa HPMC, kukhuthala kwa HPMC, kukula kwa tinthu ndi kutentha kwa chilengedwe.The hypromellose HPMC amagwira ntchito yofunika kwambiri mu matope mbali zitatu: kwambiri madzi posungira, zotsatira zake pa matope kusasinthasintha ndi thixotropy, ndi mogwirizana ndi simenti.Ntchito yosungira madzi ya cellulose ether imadalira kuyamwa kwamadzi kwa maziko, kapangidwe ka matope, makulidwe a matope, kufunikira kwa madzi a matope ndi nthawi yoyika zinthu.Pamene hypromellose imawonekera kwambiri, ndi bwino kusunga madzi.
Zomwe zimakhudza kusungidwa kwamadzi mumatope zimaphatikizapo kukhuthala kwa cellulose ether, kuchuluka kwake, kununkhira kwa tinthu ndi kutentha kwautumiki.Kuchuluka kwa kukhuthala kwa cellulose ether, kumapangitsa kuti madzi asungidwe bwino.Viscosity ndi gawo lofunikira la magwiridwe antchito a HPMC.Kwa mankhwala omwewo, amayezedwa ndi njira zosiyanasiyana za zotsatira za viscosity zimasiyana kwambiri, ndipo ena amasiyana kawiri.Choncho, poyerekeza mamasukidwe akayendedwe, ayenera kukhala chimodzimodzi mayeso njira pakati, kuphatikizapo kutentha, rotor ndi zina zotero.Nthawi zambiri, kukwezeka kwa mamachulukidwe kumapangitsa kuti madzi asungidwe bwino.Komabe, apamwamba mamasukidwe akayendedwe ndi, apamwamba molekyulu kulemera kwa HPMC ndi, solubility wa HPMC adzachepa moyenerera, amene ali ndi zotsatira zoipa pa mphamvu ndi ntchito yomanga matope.The apamwamba mamasukidwe akayendedwe, ndi bwino thickening zotsatira za matope, koma si molingana ndi ubale.Kukwera kwa mamachulukidwe ake, m'pamenenso matope onyowa amakhala owoneka bwino, onse pomanga, ntchito yomata scraper ndi kumamatira kwambiri ku gawo lapansi.Koma sizothandiza kuwonjezera mphamvu zamapangidwe a matope okha.Zomanga zonse ziwiri, magwiridwe antchito a anti-sagging.Mosiyana ndi izi, ma hypromellose ena osinthidwa okhala ndi kukhuthala kotsika mpaka apakatikati awonetsa ntchito yabwino pakuwongolera mphamvu zamapangidwe amatope onyowa.Zomwe zili mu cellulose ether mumatope, zimakhala bwino kuti zimakhala ndi madzi, zimakhala zowoneka bwino komanso zimakhala ndi madzi.Fineness ndiyenso chizindikiro chofunikira cha hypromellose.Ubwino wa hypromellose umakhudzanso mphamvu yake yosunga madzi.Nthawi zambiri, kwa hypromellose yokhala ndi kukhuthala komweko koma kukongola kosiyana, pansi pa kuchuluka komweko, kuwongolera bwino, kumapangitsa kuti madzi asungidwe bwino.
Mumatope osakanikirana ndi madzi, kuwonjezera kwa cellulose ether HPMC kumakhala kochepa kwambiri, koma kungathe kupititsa patsogolo ntchito yomanga matope osakaniza.Kusankhidwa koyenera kwa hypromellose kumakhudza kwambiri ntchito yamatope osakanikirana ndi madzi.
Nthawi yotumiza: Jul-27-2023