1. Nhanganyaya yeHydroxypropyl Methylcellulose (HPMC)
Hydroxypropyl Methylcellulose (HPMC)is a non-ionic cellulose ether yakagadzirwa kubva kune yakasikwa donje faibha kana huni pulp kuburikidza nekemikari kugadziriswa. HPMC ine mvura yakanaka solubility, thickening, kugadzikana, firimu-kuumba zvivakwa uye biocompatibility, saka inoshandiswa zvakanyanya mukuvaka, mushonga, chikafu, makemikari ezuva nezuva uye mamwe minda.
2. Matanho ekugadzira eHPMC
Kugadzirwa kweHPMC kunonyanya kusanganisira anotevera matanho akakosha:
Kugadzirira kwezvinhu
Iyo huru mbishi yeHPMC ndeyekuchena-kuchena kwechisikigo cellulose (kazhinji kubva mukotoni kana huni pulp), iyo inoda kurapwa kwekutanga kubvisa tsvina uye kuve nechokwadi kuchena uye kufanana kweselulosi.
Alkaliization kurapwa
Isa cellulose mureactor uye wowedzera huwandu hwakakodzera hwesodium hydroxide (NaOH) mhinduro yekuzvimba cellulose munzvimbo ine alkaline kuita alkali cellulose. Iyi nzira inogona kuwedzera basa re cellulose uye kugadzirira inotevera etherification maitiro.
Etherification reaction
Kubva pane alkali cellulose, methylating agents (senge methyl chloride) uye hydroxypropylating agents (senge propylene oxide) anounzwa kuita etherification reaction. Mhedzisiro yacho inowanzoitwa mune yakavharwa high-pressure reactor. Pane imwe tembiricha nekumanikidzwa, mapoka ehydroxyl ari paselulosi anotsiviwa nemapoka emethyl nehydroxypropyl kuti aumbe hydroxypropyl methylcellulose.
Neutralization washing
Mushure mekuita, chigadzirwa chacho chinogona kunge chine zvigadziriswe zvemakemikari reagents uye ne-zvigadzirwa, saka zvakakosha kuwedzera mhinduro yeasidhi ye neutralization kurapwa, uye wogeza nemvura yakawanda kana organic solvent kuti ubvise zvakasara alkaline zvinhu uye tsvina.
Kupera mvura uye kuomeswa
Iyo yakagezwa HPMC mhinduro inoiswa centrifuged kana kusefa kuti ibvise yakawandisa mvura, uye ipapo yakaderera-tembiricha yekuomesa tekinoroji inoshandiswa kugadzira hupfu hwakaoma kana maflakes kuchengetedza muviri uye makemikari zvimiro zveHPMC.
Kukuya uye kuongorora
Iyo yakaomeswa HPMC inotumirwa kumichina yekukuya yekupwanya kuti iwane HPMC hupfu hwemhando dzakasiyana siyana. Zvadaro, kuongorora uye giredhi kunoitwa kuti ive nechokwadi chekufanana kwechigadzirwa kuti chisangane nezvinodiwa zvakasiyana zvekushandisa.
Packaging uye kuchengetedza
Mushure mekuongorora kwehutano, chigadzirwa chekupedzisira chinoputirwa maererano nekushandiswa kwakasiyana (se25kg / bhegi) uye kuchengetwa munzvimbo yakaoma uye ine mhepo kudzivirira unyoro kana kusvibiswa.
3. Nzvimbo huru dzekushandisa dzeHPMC
Nekuda kwekukora kwayo kwakanaka, kugadzira firimu, kuchengetedza mvura, emulsifying uye biocompatibility zvivakwa, HPMC yakashandiswa zvakanyanya mumaindasitiri mazhinji:
Indasitiri yekuvaka
HPMC ndeyekuwedzera kwakakosha kwezvinhu zvekuvaka, zvinonyanya kushandiswa ku:
Cement dhaka: kusimudzira kuyerera kwekuvaka, kunatsiridza kunamatira, uye kudzivirira kurasikirwa kwakanyanya kwemvura.
Tile adhesive: wedzera kuchengetwa kwemvura yekunamatira mataira uye kunatsiridza mashandiro ekuvaka.
Zvigadzirwa zveGypsum: kunatsiridza kutsemuka kuramba uye kushanda kwekuvaka.
Putty poda: kunatsiridza kunamatira, kutsemuka kuramba uye anti-sagging kugona.
Self-leveling pasi: kuwedzera fluidity, kupfeka kuramba uye kugadzikana.
Pharmaceutical industry
HPMC inoshandiswa zvakanyanya mumunda wemishonga se:
Coating uye film-forming agent yemapiritsi ezvinodhaka: kunatsiridza kugadzikana kwezvinodhaka uye kudzora kuburitswa kwezvinodhaka.
Kugadziriswa-kusunungurwa uye kudzorwa-kusunungurwa gadziriro: inoshandiswa mukuchengetedza-kusunungurwa mapiritsi uye kudzorwa-kusunungurwa kusunungurwa capsule shells kugadzirisa kusunungurwa kwezvinodhaka.
Capsule substitutes: inoshandiswa mukugadzira miriwo capsules (vegetable capsules).
4. Indasitiri yezvokudya
HPMC inoshandiswa sekuwedzera kwechikafu kunyanya kune:
Thickener uye emulsifier: inoshandiswa mune zvakabikwa, jellies, sosi, nezvimwewo kuvandudza kunaka kwechikafu.
Stabilizer: inoshandiswa mu ice cream uye zvigadzirwa zvemukaka kudzivirira kunaya kweprotein.
Chikafu cheVegetarian: chinoshandiswa sechikafu chezvikafu zvakadyarwa kutsiva zvigadziro zvinobva kumhuka senge gelatin.
Zuva nezuva indasitiri yemakemikari
HPMC chinhu chakakosha muzvizoro uye zvigadzirwa zvekuchengeta munhu:
Zvigadzirwa zvekuchengetedza ganda: zvinoshandiswa mumafuta, masks echiso, nezvimwewo kupa hunyoro uye kugadzikana.
Shampoo uye gel yekugeza: kuwedzera kugadzikana kwefuro uye kuvandudza viscosity.
Mushonga wemazino: unoshandiswa semukobvu uye unonyorovesa kunatsiridza kuravira.
Pendi neingi
HPMC ine yakanaka yekugadzira bhaisikopo uye kugadzikana kwekumiswa uye inogona kushandiswa ku:
Latex pendi: kunatsiridza brushability uye rheology yepende uye kudzivirira kunaya.
Ingi: Kuvandudza rheology uye kunatsiridza kudhinda mhando.
Mamwe maapplication
HPMC inogona zvakare kushandiswa ku:
Indasitiri yeCeramic: Sechibhainda, vandudza kusimba kweceramic blanks.
Zvekurima: Inoshandiswa mukumiswa kwemishonga yezvipembenene uye machira embeu kuvandudza kugadzikana kweagent.
Indasitiri yekugadzira mapepa: Semumiriri wekuisa saizi, vandudza kumira kwemvura uye kudhindwa kwepepa.
HPMCchinhu chinoshandiswa zvakanyanya chepolymer zvinhu, chinoshandiswa zvakanyanya mukuvaka, mushonga, chikafu, makemikari emazuva ese, machira uye mamwe maindasitiri. Maitiro ayo ekugadzira anosanganisira mbishi pretreatment, alkalization, etherification, kugeza, kuomesa, kukuya uye mamwe matanho, imwe neimwe link inokanganisa kunaka kwechigadzirwa chekupedzisira. Nekuvandudzwa kwezvinodiwa zvekuchengetedza kwezvakatipoteredza uye kukura kwekudiwa kwemusika, tekinoroji yekugadzira yeHPMC iri kuvandudzwawo kuti isangane nezvinodiwa zvemamwe maindasitiri.
Nguva yekutumira: Mar-25-2025