Kugadzira Hydroxypropyl Methylcellulose (HPMC) kunosanganisira akati wandei akaomesesa nhanho anoshandura cellulose kuita polymer inogoneka ine huwandu hwakasiyana hwekushandisa mumaindasitiri akasiyana. Kuita uku kunowanzotanga nekubviswa kweselulosi kubva kuchirimwa-based masosi, ichiteverwa nekuchinja kwemakemikari kuunza hydroxypropyl uye methyl mapoka kumusana we cellulose. Iyo inokonzeresa HPMC polymer inopa yakasarudzika zvivakwa zvakaita sekukora, kusunga, kugadzira firimu, uye kuchengetedza mvura. Ngationgororei mune yakadzama maitiro ekugadzirwa kweHPMC.
1. Kutsvaga Raw Materials:
Iyo yekutanga mbishi yekugadzirwa kweHPMC ndeye cellulose, iyo inotorwa kubva kune zvidyarwa-zvinobvamo zvakaita sehuni pulp, machira ekotoni, kana zvimwe zvidyarwa zvine fibrous. Aya masosi anosarudzwa zvichienderana nezvinhu zvakaita sekuchena, cellulose zvemukati, uye kusimudzira.
2. Kubvisa Cellulose:
Cellulose inotorwa kubva kune yakasarudzwa chirimwa-based masosi kuburikidza neakatevedzana emakanika uye makemikari maitiro. Pakutanga, simbi yakabikwa inogadziridzwa, iyo inogona kusanganisira kuwachwa, kukuya, uye kuomeswa kubvisa tsvina nehunyoro. Zvadaro, cellulose inowanzobatwa nemakemikari akadai sealkalis kana acids kuputsa lignin uye hemicellulose, ichisiya yakacheneswa cellulose fiber.
3. Etherification:
Etherification ndiyo yakakosha makemikari maitiro mukugadzirwa kweHPMC, uko hydroxypropyl uye methyl mapoka anounzwa pane cellulose musana. Iyi nhanho yakakosha pakugadzirisa zvimiro zve cellulose kuti iwane basa rinodiwa reHPMC. Etherification inowanzoitwa kuburikidza nekuita kweselulosi nepropylene oxide (yemapoka ehydroxypropyl) uye methyl chloride (yemapoka emethyl) muhupo hwealkali catalysts pasi pemamiriro ekushisa nekumanikidza.
4. Neutralization uye Washing:
Mushure me etherification, musanganiswa wekuita haugadziriswi kubvisa chero asara alkali catalysts uye kugadzirisa pH level. Izvi zvinowanzoitwa nekuwedzera asidhi kana base zvichienderana nemamiriro ekuita chaiwo. Neutralization inoteverwa nekunyatsogeza kubvisa ne-zvigadzirwa, makemikari asina kubatwa, uye tsvina kubva kuHPMC chigadzirwa.
5. Kusefa uye Kuomesa:
Iyo yakagadziriswa uye yakashambidzwa HPMC mhinduro inopinda kusefa kuti iparadzanise zvimedu zvakasimba uye kuwana mhinduro yakajeka. Kusefa kunogona kusanganisira nzira dzakasiyana senge vacuum filtration kana centrifugation. Kana mhinduro yacho yajekeswa, yakaomeswa kubvisa mvura uye kuwana HPMC muhupfu. Nzira dzekuomesa dzingasanganisira kuomeswa nekupfapfaidza, kuomeswa kwemubhedha, kana kuomeswa kwedhiramu, zvichienderana nehukuru hunodiwa uye zvimiro zvechigadzirwa chekupedzisira.
6. Kukuya nekusefa (Zvichida):
Mune zvimwe zviitiko, iyo yakaomeswa HPMC poda inogona kuenderera mberi nekugadziriswa senge kugaya uye sieving kuti iwane chaiyo particle saizi uye kunatsiridza kuyerera. Iyi nhanho inobatsira kuwana HPMC ine anowirirana emuviri maitiro akakodzera akasiyana maapplication.
7. Kudzora Hunhu:
Munguva yese yekugadzira maitiro, akaomesesa emhando yekudzora matanho anoitwa kuti ave nechokwadi chekuchena, kuenderana, uye kuita kweHPMC chigadzirwa. Hunhu hwekudzora ma parameter anogona kusanganisira viscosity, particle size kugovera, hunyoro hwemukati, dhigirii rekutsiva (DS), uye zvimwe zvakakosha zvivakwa. Maitiro ekuongorora akadai seviscosity kuyerwa, spectroscopy, chromatography, uye microscopy anowanzo shandiswa kuongororwa kwemhando.
8. Kurongedza uye Kuchengeta:
Kana chigadzirwa cheHPMC chichinge chapfuura bvunzo dzekudzora mhando, inoiswa mumidziyo yakakodzera senge mabhegi kana zvigubhu uye yakanyorwa zvinoenderana nezvakatsanangurwa. Kurongedza kwakaringana kunobatsira kuchengetedza iyo HPMC kubva kuhunyoro, kusvibiswa, uye kukuvadzwa kwemuviri panguva yekuchengetedza nekufambisa. Iyo yakaputirwa HPMC inochengetwa munzvimbo dzakadzorwa kuchengetedza kugadzikana kwayo uye pasherufu-hupenyu kusvika yagadzirira kugoverwa uye kushandiswa.
Zvikumbiro zveHPMC:
Hydroxypropyl Methylcellulose inowana kushandiswa kwakakura mumaindasitiri akasiyana anosanganisira mishonga, kuvaka, chikafu, zvizorwa, uye zvigadzirwa zvekuchengeta munhu. Mumishonga yemishonga, inoshandiswa sebhainda, disintegrant, firimu rekare, uye inosimudzira-kuburitsa mumiriri mukugadzira piritsi. Mukuvaka, HPMC inoshandiswa seyakakora, inochengetedza mvura, uye rheology modifier mumadhaka ane simende, plasters, uye anonamira mataira. Muchikafu, inoshanda seyakakora, inosimbisa, uye emulsifier mune zvigadzirwa zvakaita sesosi, soups, uye madhiri. Pamusoro pezvo, HPMC inoshandiswa muzvizoro uye zvigadzirwa zvekuchengeta zvega zvekugadzira firimu, kunyorovesa, uye kugadzirwa-kugadzirisa zvivakwa.
Environmental Zvinotarisirwa:
Kugadzirwa kweHPMC, semazhinji maindasitiri maitiro, kune zvakatipoteredza. Nhamburiko dziri kuitwa kuvandudza kusimba kwekugadzirwa kweHPMC kuburikidza nezvirongwa zvakaita sekushandisa simba rinogonekazve, kuvandudza mashandisirwo ezvakagadzirwa, kuderedza kugadzirwa kwemarara, uye kuita eco-inoshamwaridzika matekinoroji ekugadzira. Pamusoro pezvo, kuvandudzwa kwebio-based HPMC inotorwa kubva kune yakagadzikana masosi senge algae kana microbial kuvirisa inoratidza chivimbiso mukudzikisa nharaunda tsoka yekugadzirwa kweHPMC.
kugadzirwa kweHydroxypropyl Methylcellulose kunosanganisira nhevedzano yematanho kutanga kubva pakutorwa kweselulosi kuenda kukugadzirisa kemikari, kucheneswa, uye kutonga kwemhando. Iyo inokonzeresa HPMC polymer inopa huwandu hwakasiyana hwekushanda uye inowana maapplication mumaindasitiri akasiyana. Kuedza kusimbaradza uye basa rezvakatipoteredza kuri kutyaira hunyanzvi mukugadzirwa kweHPMC, nechinangwa chekudzikisa kukanganisa kwayo kwezvakatipoteredza uku uchizadzisa kudiwa kuri kukura kweiyi polymer inoshanda zvakasiyana.
Nguva yekutumira: Mar-05-2024