Maitiro ekutonga mhando yeHydroxypropyl Methyl Cellulose HPMC?

(1).Musiyano uripo pakati peyakasvibiswa hydroxypropyl methylcellulose (HPMC) uye yakachena hydroxypropyl methylcellulose (HPMC)
1. Kuonekwa: Pure hydroxypropyl methylcellulose HPMC inotaridzika uye ine zvishoma zvishoma, kubva ku0.3-0.4g / ml;yakasvibiswa hydroxypropyl methylcellulose HPMC ine fluidity iri nani uye inonzwa kurema, uye pane mutsauko wakakura muchitarisiko kubva muchigadzirwa chaicho.
2. Mamiriro: Pure hydroxypropyl methylcellulose HPMC powder is fibrous pasi pe microscope kana magnifying glass;nepo yakasvibiswa hydroxypropyl methylcellulose HPMC inogona kuonekwa se granular solids kana makristasi pasi pemaikorosikopu kana girazi rinokudza.

3. Kunhuwa: Pure hydroxypropyl methylcellulose HPMC haigoni kunhuwa kunhuwa kweammonia, starch uye doro;yakasvibiswa hydroxypropyl methylcellulose HPMC inogona kunhuhwirira marudzi ese emunhuhwi, kunyangwe isinganakidze, Inonzwa kurema.
4. Aqueous solution: pure hydroxypropyl methylcellulose HPMC aqueous solution yakajeka, high light transmittance, mvura yekuchengetedza mvura ≥ 97%;yakasvibiswa hydroxypropyl methylcellulose HPMC aqueous solution ine turbid, uye mwero wekuchengetedza mvura unonetsa kusvika 80%.

(2), kuchengetwa kwemvura kwehydroxypropyl methylcellulose HPMC, kusiyanisa zvakanakira nekuipira:

Kuchengetwa kwemvura kwemethyl cellulose ether pasi pemamiriro ekushisa kwakanyanya chiratidzo chakakosha chekusiyanisa kunaka kwemethyl cellulose ether.Zvinhu zvakadai semhepo tembiricha, tembiricha uye kumhanya kwemhepo zvinokanganisa huwandu hwekuvhuvhuta kwemvura mumatope esimende uye zvigadzirwa zvegypsum.Naizvozvo, mumwaka wakasiyana, kune mimwe misiyano mukuchengetedza mvura mhedzisiro yezvigadzirwa zvine huwandu hwakafanana hweHPMC yakawedzerwa.Mukuvaka chaiko, iyo yekuchengeta mvura mhedzisiro yeslurry inogona kugadziriswa nekuwedzera kana kudzikisa huwandu hweHPMC hwakawedzerwa.Yakanakisa hydroxypropyl methylcellulose HPMC zvigadzirwa zvinogona kunyatsogadzirisa dambudziko rekuchengetedza mvura pasi pekupisa kwakanyanya.

Yepamusoro-mhando methylcellulose inogona kuparadzaniswa uye inobudirira kuparadzirwa musimende dhaka uye gypsum-yakavakirwa zvigadzirwa, uye kuputira zvese zvakasimba zvimedu, uye kugadzira firimu rekunyorova, hunyoro huri mubhesi hunoburitswa zvishoma nezvishoma kwenguva yakareba, uye inorganic The hydration reaction. ye gelled material inovimbisa kusimba kwechisungo uye kudzvinyirira simba rezvinyorwa.High-quality hydroxypropyl methylcellulose HPMC, kufanana kwayo kwakanaka kwazvo, mapoka ayo methoxy uye hydroxypropoxy akagoverwa zvakaenzana pamwe chete ne cellulose molecular chain, inogona kuwedzera okisijeni pa hydroxyl uye ether bond Kugona kwemaatomu kushamwaridzana nemvura kuti iite hydrogen bonds. inoshandura mvura yemahara kuita mvura yakasungwa, nekudaro ichinyatso kudzora kubuda kwemvura kunokonzerwa nekupisa kwemamiriro ekunze uye kuwana kuchengetwa kwemvura kwakakwira.
Naizvozvo, mukupisa kwekupisa kwezhizha kuvakwa, kuitira kuti uwane mhedzisiro yekuchengetedza mvura, zvinodikanwa kuti uwedzere emhando yepamusoro zvigadzirwa zveHPMC muhuwandu hwakakwana maererano neformula, zvikasadaro, pachave nekusakwana hydration, kuderedzwa simba, kuputika, kuputika. uye kudurura kunokonzerwa nekunyanya kuomesa.matambudziko, asiwo kuwedzera kuoma kwekuvaka kwevashandi.Sezvo tembiricha inodonha, huwandu hwemvura HPMC hwakawedzerwa hunogona kuderedzwa zvishoma nezvishoma, uye iyo yakafanana yekuchengetedza mvura inogona kuwanikwa.

(3) Kuparara kwehydroxypropyl methylcellulose HPMC

Muindasitiri yekuvaka,hydroxypropyl methylcellulose HPMCinowanzoiswa mumvura isina kwayakarerekera, uye chigadzirwa cheHPMC chinonyungudika chega kutonga mwero wekuparara.Mushure mekuiswa mumvura isina kwayakarerekera yoga, chigadzirwa chinokurumidza kunyura pasina kupararira chigadzirwa chisina kubatwa kwepamusoro;mushure mekuiswa mumvura isina kwayakarerekera yoga, chigadzirwa chinogona kupararira uye chisingabatanidzi pamwe chete chigadzirwa chine kurapa kwepamusoro.Kana iyo yepamusoro isina kubatwa hydroxypropyl methylcellulose HPMC yakanyungudika yega, chikamu chayo chimwe chete chinonyungudika nekukurumidza uye chinogadzira firimu nekukurumidza, zvichiita kuti mvura isapinde mune mamwe matumbu, zvichikonzera agglomeration uye agglomeration, iyo parizvino inonzi inononoka kupera mumusika chigadzirwa.

Surface-treated hydroxypropyl methylcellulose HPMC chigadzirwa zvimedu, mumvura isina kwayakarerekera, zvidimbu zvega zvinogona kuparadzirwa pasina agglomeration, asi chigadzirwa viscosity hachizokurumidza.Mushure mekunyura kweimwe nguva yenguva, chimiro chemakemikari chepamusoro chekurapa chinoparadzwa, uye mvura inogona kunyungudutsa iyo HPMC zvimedu.Panguva ino, zvimedu zvechigadzirwa zvakaparadzirwa zvizere uye zvakanyura mvura yakakwana, saka chigadzirwa hachizoagglomerate kana agglomerate mushure mekuparadzwa.Kumhanya kwekupararira uye kukurumidza kupera kunoenderana nehuwandu hwekurapa kwepamusoro.Kana kurapa kwepamusoro kuri kudiki, kukurumidza kwekuparadzira kunononoka uye kumhanya kwekunamatira kunokurumidza;nepo chigadzirwa chine kudzika kwepamusoro kurapwa kune kukurumidza kupararira kumhanya uye kunonoka kunamatira kumhanya.Kana iwe uchida kuita kuti iyi nhevedzano yezvigadzirwa zvinyunguduke nekukasira mune ino mamiriro, unogona kudonhedza zvishoma zvealkaline zvinhu kana zvanyungudutswa chete.Musika wazvino uno unowanzo kunzi zvigadzirwa zvekukurumidza.Hunhu hwepamusoro-yakagadziriswa HPMC zvigadzirwa ndeidzi: mune aqueous mhinduro, zvimedu zvinogona kupararira pamwe chete, zvinogona kunyungudika nekukurumidza mualkaline state, uye kunyungudika zvishoma nezvishoma mune kwazvakarerekera uye acidic state.

Hunhu hweiyo isina kurapwa hydroxypropyl methylcellulose HPMC ndeiyi: chimedu chimwechete chinonyungudika nekukurumidza mu acidic, alkaline, uye kwazvakarerekera nyika, asi haigone kupararira pakati pezvimedu zviri mumvura, zvichikonzera kuungana uye agglomeration.Mukushanda chaiko, mushure mekuparadzirwa kwemuviri kweiyi nhevedzano yezvigadzirwa uye zvimedu zvakasimba senge rabha hupfu, simende, jecha, nezvimwewo, chiyero chekunyungudika chinokurumidza, uye hapana agglomeration kana agglomeration.Kana zvichidikanwa kunyungudutsa zvigadzirwa zveHPMC zvakasiyana, iyi nhevedzano yezvigadzirwa inofanira kushandiswa nekuchenjerera, sezvo ichizoungana uye kubata pamwechete.Kana zvakakosha kunyungudutsa iyo isiri-pamusoro-yakagadziriswa hydroxypropyl methylcellulose HPMC chigadzirwa zvakasiyana, inoda kuparadzirwa zvakafanana ne 95 ° C mvura inopisa, uye yozotonhodzwa kuti iparare.

Mukushanda chaiko kwekugadzira, iyi nhevedzano yezvigadzirwa zvinowanzonyungudika mushure mekuparadzirwa nezvimwe zvimedu zvakaomarara pasi pemamiriro ealkaline, uye mwero wayo wekunyunguduka hauna kusiyana neuyo wezvigadzirwa zvisina kurapwa.Izvo zvakakodzerawo kushandiswa mune zvigadzirwa zvakanyungudutswa chete, pasina caking kana mapundu.Muenzaniso chaiwo wechigadzirwa unogona kusarudzwa maererano nehuwandu hwekuparara hunodiwa nekuvaka.
Munguva yekuvaka, ingave simende dhaka kana gypsum-based slurry, mazhinji acho ari alkaline masisitimu, uye huwandu hweHPMC hwakawedzerwa hudiki kwazvo, hunogona kuparadzirwa zvakaenzana pakati pezvimedu izvi.Kana mvura yawedzerwa, HPMC inokurumidza kunyungudika.