Hydroxyprupyl methylcellose (HPMC)inzvimbo yemilipuntional yemvura-yemvura inoumbwa yakawandisa inoshandiswa zvakanyanya muminda yekuvaka, mushonga, cosmetics, chikafu uye peturu indasitiri yechipfuya. Iyo yakavakirwa pane zvakasikwa chirimwa cellulose uye inowanikwa kuburikidza nemakemikari kugadzirisa maitiro. Iyo ine yakanaka mvura solubility, kurerutsa, firimu-kugadzira uye kuyemura zvivakwa. Iko kugadzirwa kwemaindasitiri kwekimacell®hpmc inonyanya kusanganisira kuita kwekugadzirisa cellulose. Zvakajairika zvekushandura maitiro zvinosanganisira methylation uye hydroxyprupropropylation.
1. Zvishandiso zvakagadzirwa uye kunyepedzera kweHPMC
Cellulose Raw Zvishandiso: Kugadzirwa kweHPMC kunotanga neCartulose Cellulose. Zvigadzirwa zvinowanzoitika zvinosanganisira chirimwa zvigadzirwa zvakadai sehuni dzemapururu, machira, uye hemp. Kuti vave nechokwadi chekufambira mberi kwakajeka kwekutevera maitiro, cellulose kazhinji anofanirwa kunyepedzera kubvisa tsvina uye kuwedzera basa rekuita.
Matanho ekutunganidzira matanho: Iko kunyepedzera kwemasero kazhinji kunosanganisira matanho akadai sekushambidza, kuomesa, uye kupwanya fomu cellular kana yakavezwa yemakemikari emakemikari.
2. Synthesisisisiti yeHPMC
Maitiro eSynthesis yeHPMC anonyanya kusanganisira methylation uye hydroxpremyprationlation. Iyo chaiyo yekugadzira maitiro inosanganisira inotevera nhanho:
Activation of cellulose: Kuti uite kuti cellulose ive nyore kurapa, inowanzo kuve yakakodzera cellulose solution yakaita seSodium Hydroxide (Naoh) Kuti uwane SWELLE Cellen Cellx Matrix. Panguva ino, iyo crystallinity ye cellulose inoderedza uye chimiro chinova chakaburitswa, icho chinobatsira pakutevera makemikari kugadzirisa.
Methylation Reaction: Iyo methylation maitiro inogadzirisa iyo cellulose Molecule nekuunza methyl (-ch₃) boka. Iyo inowanzoshandiswa methylating vamiririri methyl chloride (chōcl) kana chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform (chloroform) Mukuvapo kweSodium Hydroxide, iyo Methylating Agent's Cellulose Mapoka eHydroxel (-OOH) paCellulose Molelose Mapoka (-CH₃), nekudaro kuumba methyl cellulose.
Hydroxypruspropylation Reaction: Mushure mekunge methylation yapedzwa, profylexo oxide (PO) inowanzo shandiswa seyakajaira kuunza hydroxpressl group (-ch₂ch (oh) chō). Kuita kunoitwa pasi pasi peAlkaline mamiriro. The hydroxypropylation reaction replaces some of the methoxy groups on the cellulose molecule with hydroxypropyl groups, thereby forming HPMC.
Reaction Kudzora: Munguva yese yekuita maitiro, tembiricha, nguva uye huwandu hwezvekuita zvinodzorwa kuti uve nechokwadi cheiyo methyroproproprollation uye degree of methyroll®hpmc inosangana nezvinodiwa zvechigadzirwa. Kazhinji, tembiricha yekudzidzira inodzorwa pakati pegumi nemakumi masere ca c, uye nguva yekuita kubva kumaawa akati wandei kusvika maawa anopfuura gumi.
Kusarerekera uye kucheneswa: Mushure mekunge kuitwa kwapera, iyo chigadzirwa chinoda kusaradzikiswa uye chakacheneswa, seyakawedzera acid, etcrochloric acid, kuti tisarerekesa zvakawandisa alkaline zvinhu. Matanho ekuzvinatsa anosanganisira kugeza, kusefa, kuomesa uye mamwe maitiro ekubvisa zvisingaite zvishandiso zvisina kufanira, solvents uye ne-zvigadzirwa.
3. Chigadzirwa kuomesa uye kurongedza
Kuomesa: Iyo Yakacheneswa HPMC inowanzoitika muchimiro chehupfu hwemvura, uye kunyorova kunofanirwa kubviswa nekupedza kuomesa, kudziya. Chigadzirwa chakaomeswa chinofanira kuchengetedza yakaderera moisture yezvinyorwa, kazhinji inodzorwa pazasi 5%, kudzivirira chigadzirwa kubva pakunamatira uye maunzi.
Packaging: Iyo yakaomeswa HPMC yakarongedzwa muFowder fomu, uye maitiro ekutakura anoda kunyorova-humbowo kurapwa. Izvo zvinowanzoiswa mumabhegi emapepa, mapepa emapepa kana mabhegi emabhegi ekufambisa nyore uye kuchengetedza.
4. Mhando yekudzora uye zvigadzirwa zviyero
Mukutonga kwekugadzira HPMC, mhando yemhando yepamusoro yakakosha. Unhu hweHPMC zvinoenderana kwete chete pamhando yezvinhu zvisina kugadzirwa, asiwo pazvinhu zvakadai sekugadzirisa mamiriro uye post-kugadzirisa maitiro. Vagadziri vanowanzoita gadziriro yemhando dzinoenderana nemamiriro ekunze uye matunhu ematunhu. Zviratidzo zvakajairika zvinosanganisira:
Solubility: HPMC inofanirwa kunge iine yakanaka mvura solubility, uye solubility uye kupaza mwero unofanirwa kusangana nezvinodiwa zvakataurwa.
Viscosity: Iyo viscosity yeHPMC yakanangana nayo inoshanda application maitiro, uye zvigadzirwa zvakasiyana zvine zvakasiyana zvevascossity zvinodiwa. Commen viscosity bvunzo nzira dzinosanganisira brookfield vcossity nzira.
Kuchena uye kusvibiswa: zviripo zvekusvibisa muHPMC zvigadzirwa zvinofanirwa kudzorwa mukati meiyo yakatarwa huwandu kuti uve nechokwadi chekuchena kwakanyanya kwechigadzirwa.
Saizi yeChipenga: Zvichienderana nezvinodiwa zveminda yakasiyana yekushandisa, saizi yehukuru hweHPMC inogona kusiyana, uye poda yakanaka kana zvigadzirwa zvematongerwo enyika zvichave nemabasa akasiyana ekushandisa.
5. Masisitiri eminda yeHPMC
HPMC inoshandiswa zvakanyanya mumaindasitiri mazhinji uye ine kukosha kwakakosha kwekutengesa.
Indasitiri yekuvaka: HPMC inowanzoshandiswa zvakanyanya seyakanyanya uye yekuchengetedza mvura muzvivakwa zvekugadzira senge motsi, yakaoma motwe uye inodaidzira maitiro ekuvaka uye kuchengetwa kwemvura.
Indasitiri yechechi yechechi: Hpmc ine zvakakosha zvekushandisa mumunda wemishonga se capsule shells, piritsi inonamatira uye inodzorwa-inotakura zvinodhaka.
Indasitiri yezvokudya: Muchikafu, HPMC inoshandiswa seanoti, stabilizer, emulsifier, etc., iyo inogona kuvandudza chimiro uye kuravira kwechikafu.
Cosmetic indasitiri: HPMC inoshandiswa seyakakwenenzverwa uye yemufirimu-inogadzira mumiririri mune cosmetics, uye inoshandiswa mukugadzirwa kwezvigadzirwa zvakadai semafuta nemakirimu.
Mamwe minda: Kimilloll®hpmc inoshandiswa zvakanyanya mumaindasitiri akadai sepetroleum, zvinyorwa, pepa, uye hukuru.
Kugadzirwa kwemaindasitiri kweHpcShanduko yemasangano echisikigo muchinguvana muPolymer ine midziyo ine midziyo yezvivakwa kuburikidza nenhevedzano yemakemikari yekugadzirisa kwemakemikari. Nekunyatso kudzora mamiriro ekuita uye post-kurapwa maitiro, HPMC zvigadzirwa zvinosangana nezvinodiwa zvakasiyana zvekushandisa zvinogona kuwanikwa. Nekushandiswa kwakapararira kweHPMC, kuwedzera uye kuwedzera kwekutsvaga nehunyanzvi hunyanzvi kuchapfuurira kusimudzira kuvandudzwa kwekugadzirisa kwayo maitiro uye mhando yechigadzirwa.
Kutumira Nguva: Jan-27-2025