Hydroxyprupyl methylcellose (HPMC)is is is is is-ionic, yemvura-soluble cellulose yakasanganiswa ether. Chitarisiko chakachena kusvika kune zvishoma yero poda kana granular zvinhu, zvisingaravirire, zvisina kufanira, zvisina kugadzikana, nemamapu emvura kuti aumbe, uye viscous mhinduro uye viscous. Chimwe chezvakanyanya kukosha zvivakwa zve hydroxypropyl methylcellose mukushandisa ndezvekuti inowedzera iyo viscosity yemvura. Iyo inokatyamadza mhedzisiro inoenderana neiyo degree rePolymerization (dp) yechigadzirwa, kusunganidzwa kwemhereman yakadzika mumhedzisiro, iyo sheera, uye tembiriro yekupindura. Uye zvimwe zvinhu.
01
Fluid mhando yeHPMC Mvura Mhinduro
Kazhinji, kushushikana kwemvura mumvura inoyerera kunogona kuratidzwa sebasa remhete shear】 (chero bedzi isiri nguva-inotsamira. Zvichienderana nechimiro che ƒ (γ), mvura inogona kukamurwa mumhando dzakasiyana, kureva: Newtonian Fluids, Fluidtuids, Fluids Fluids, pseudoplastic mvura uye Bingham Plastiki Fluids.
Cellulose ana ana vana yakakamurwa kuita mapoka maviri: imwe ndeye isiri-ionic cellulose ether uye imwe ndeye ionic cellulose ether. Kune renzi yemhando mbiri idzi dzema cellulose etana. SC NAIK et al. yakaitiswa yakakwana uye yakarongeka yekufananidza ongororo pa hydroxytl cellulose uye sodium carboxymeym cellutions mhinduro. Mhedzisiro yacho yakaratidza kuti isiri-ionic cellulose ether mhinduro uye ionic cellulose ether mhinduro dzese dzaive pseudoplastic. Kuyerera, kureva kuti non-Newtonian kuyerera, kusvika neNewtonian zvinwiwa chete pazvinhu zvakaderera kwazvo. Iyo pseudoplasticasity ye hydroxyprupyl methylcellose Solution inoita basa rakakosha mukushandisa. Semuenzaniso, kana waiswa mumatombo, nekuda kwehunhu hweshekesa hwakajeka hwemvura, iyo yekugadzirisa inoderera nekuwedzera kweshekita, inoenderana neyakagadziriswa yechidimbu, uye zvakare inowedzera iyo fluidity yekubatanidza . Mhedzisiro yakakura kwazvo; Ndichizorora, iyo visikopa yemhinduro yakakura kwazvo, iyo inobudirira inodzivirira kuiswa kweiyo pigment zvimedu muCoating.
02
HPMC viscossity bvunzo nzira
Chinyorwa chakakosha kuyera mhedzisiro yehydroxyprupyl methylcellose ndiyo fanti yekuisa yemhedzisiro mhinduro. Nzira dzekuyerwa dzisingaonekwe viscosity dzinowanzo sanganisira Capillary viscossity nzira, rotisa viscosity nzira uye kudonha bhora ball viscossity nzira.
Iko: ndiko kuoneka kwekuona, MPA s; K ndiyo viscomer anogara; D ndiko kusimba kwemhinduro yekugadzirisa musi wa20 / 20 ° C; T ndiyo nguva yemhinduro yekupfuura nepakati pechikamu chepamusoro cheviscometer kusvika pazasi Mako, s; Iyo nguva iyo iyo yakaenzana nemafuta inoyerera kuburikidza neViscometer yakayerwa.
Nekudaro, iyo nzira yekuyera neCapillary VisaCometer inonyanya kutambudza. MaVisikopa Zvevazhinjicellulose etanaZvakaoma kuongorora uchishandisa Capillary viscomputer nekuti aya masarudzo ane trace huwandu hwezvinhu zvisinganyanyoka chete kana iyo Capillary viscoleter yakavharwa. Naizvozvo, vagadziri vazhinji vanoshandisa tortational viscometers kudzora mhando yehydroxyprupylpropropyl methylcellose. Brookfield mavitcers anowanzo shandiswa kune dzimwe nyika, uye ndJ visccometa inoshandiswa kuChina.
03
Kufurira zvinhu zveHPMC viscosity
3.1 Ukama nehuwandu hwekuunganidzwa
Kana mamwe ma paramita aramba asina kuchinjika, iyo viscosity ye hydroxypropyl methylcellose solution yePolymerization (dp) kana manyorerwo cake, uye inowedzera nekuwedzera kweiyo polymerization. Iyi mhedzisiro inonyanya kutaurwa mune imwe nyaya yakaderera yePolymerization pane mune iyo nyaya yakakwirira yePolymerization.
3.2 hukama pakati peviscosity uye kusungwa
Iyo viscosity ye hydroxyprupyl methylcellose inowedzera nekuwedzera kwekuwedzera kwechigadzirwa mune mhinduro yemakwikwi. Kunyangwe shanduko diki yekuvimbika ichaita shanduko yakakura muViscosity. Nezvezita remazwi e hydroxyprosyl methylcellose simba rekuchinja kwekushanduka kwekusangana kwekusangana kweiyo viscosity yemhinduro zvakanyanya uye zviri pachena.
3.3 Ukama pakati peviscosity uye Shear rate
Hydroxypruppropyl methylcellose mhinduro yemvura ine pfuma yekutsemuka. HydroxyPropyl methylcellose yemasiroti akasarudzika ezita akagadzirirwa mune 2% mhinduro mhinduro, uye visikopa zvaro pamitengo yakasiyana inoyerwa zvakateerana. Mhedzisiro yacho iri seinotevera sezvakaratidzwa mumufananidzo. Pakuderera shear rate, iyo viscosity ye hydroxyprupyl methylcellose solution haina kuchinja zvakanyanya. Kuwedzera kwehombecha shear, iyo viscosity yehydroxyprosyl methylcellose Solution ine yakakwira viscosity yakaderera zvakanyanya, nepo mhinduro neyakaderera viscosity haina kuderera pachena.
3.4 Ukama pakati peviscosity uye tembiricha
Iyo viscosity yeiyo hydroxyprupyl methylcellose Solution inokanganiswa zvakanyanya nekushisa. Sezvo tembiricha inowedzera, iyo viscosity yemhinduro inoderera. Sezvinoratidzwa muchimiro, chakagadzirirwa mune mhinduro yemukati neisimba re2%, uye shanduko yeiyo visikoka nekuwedzera kwekushisa kunoyerwa.
3.5 Zvimwe zvinopesvedzera zvinhu
Iyo viscosity yemhedzisiro mhinduro ye hydroxyprupyl methylcellose inokanganiswawo nekuwedzera mukuwedzera mumhinduro, uye kushomeka kwemocrigation. Kazhinji, kuitira kuti uwane basa riri nani rekushandiswa kana kuderedza mutengo wekushandiswa, zvakafanira kuwedzera modifiologers, dzakadai sevhu, strar's Solither Copolymer, kune mhinduro yemukati yeHydroxypruproplulose. , uye electrolyste yakadai se chloride, bromide, phomhate, nitrate, etc. inokwanisa zvakare kuwedzerwa kumhedzisiro mhinduro. Aya mahamba haazokanganisa chete zvivakwa zvemukati zvemhinduro, asi zvakare zvinokanganisa zvimwe zvekushandisa zve hydroxyprupyl methylcellose yakadai sekuchengetwa kwemvura. , Sag kuramba, etc.
Iyo viscosity yemhedzisiro mhinduro ye hydroxyprusyl methylcellose inotambiswa neiyo acid uye alkali, yakadai seyakagadzirwa acid, acidic acid, phosphhoric acid , Boric Acid, Citric acid, etc. Nekudaro, yakaiswazve acid ichaderedza iyo viscosity. Asi Caustic soda, potassium hydroxide, lime mvura, nezvimwe. Tichienzanisa nedzimwe cellulose ana vana,hydroxypruppropyl methylcelloseMhinduro yemvura ine yakanaka artrobial kugadzikana, chikonzero chikuru che hydroxpropyl methese Mukusvibiswa kwe cellulose ether mamorekuru uye keteni yezvakatara. Kuitwa uku ndekwekuti jecha rinooneka remhinduro mhinduro inofadzai. Kana zvichidikanwa kuchengetedza mhinduro yemukati ye hydroxypropropyl methylcellose kwenguva yakareba, inokurudzirwa kuwedzera huwandu hwenyika yeAntifungal mumiririri kuti uone kuti vhiza risingashandure zvakanyanya. Kana uchisarudza anti-fungul vamiririri, anodzivirira kana fungidziro, uye sarudza zvigadzirwa zvisina kujairika, zvakadai sechidhirowa momicides, katsiard64 uye zvimwe zvigadzirwa. inogona kutamba chiitiko chinoenderana.
Kutumira Nguva: Kubvumbi-28-2024