Hydroxypropyl methyl cellulose (HPMC), iyo mbishicellulose, inogona kunatswa donje kana huni pulp. Izvo zvinodikanwa kuti uzviputse pamberi kana panguva ye alkalization process. Iyo pulverization inoitwa nemagetsi simba. Paradza iyo yakaunganidzwa chimiro che cellulose mbishi zvinhu kuderedza crystallinity uye polymerization dhigirii uye kuwedzera nzvimbo yaro, nekudaro kuvandudza kuwanikwa uye kemikari kuita kugona kwemareagents kumapoka matatu ehydroxyl pane cellulose macromolecular glucose ring base.
Hydroxypropyl methyl cellulose (HPMC)inoshandiswa seyakagadziriswa substrate kugadzira oiri, iyo inogona kuona kushandiswa kweshuga yakazara, kuvandudza mwero wekushandiswa kwezvinhu zvakabikwa, kuderedza huwandu hwasara hwe substrate mumuto wekuvirisa, uye kuderedza mutengo wekuchenesa mvura. Hunhu hwemethyl celluloseanobatsira pakugadzirisa kwebatch, fed-batch uye inoenderera mberi yekuvirisa, kudzivirira nhevedzano yezvinetso zvakaita sekudzora kuumbwa kwepakati uye chiyero che dilution; panguva imwecheteyo, inobatsirawo kukugadzirisa kwekuvirisa. Nekuti zvinhu zvehydroxypropyl methyl cellulose (HPMC)akafanana nemamwe ether anonyungudika nemvura, anogona kushandiswa semugadziri wemufirimu, thickener, emulsifier uye stabilizer mu latex coatings uye mvura-soluble resin coating components, zvichiita kuti zvikwanise kugadzira mapeji Iyo firimu ine yakanaka abrasion resistance, leveling. zvivakwa uye kunamatira, uye yakavandudza kusawirirana kwepasi, kugadzikana kune asidhi uye alkali, uye kuenderana nesimbi pigment.
Hydroxypropyl methyl cellulose (HPMC)ine mhedzisiro yakanaka seyakakora yewhite water-based polyvinyl acetate coatings. Chiyero chekutsiva checellulose etherinowedzera, uye kuramba kune mabhakitiriya uye kukukurwa kunowedzerawo.
Kunyangwe iyo musimboti weiyo etherification synthesis yehydroxypropyl methylcellulose (HPMC) haina kuoma, ndeye alkalization, mbishi kupwanya, uye alkalization. Nzvimbo dzakasiyana-siyana dze etherification, solvent recovery, centrifugal kupatsanurwa, kugeza nekuomesa zvinosanganisira nhamba huru yetekinoroji yakakosha uye ruzivo rwakapfuma.
Kune marudzi akasiyana ezvigadzirwa, nharaunda yega yega ine yazvino kudzora mamiriro, senge tembiricha, nguva, kudzvanywa uye kuyerera kwezvinhu. Midziyo yekubatsira uye midziyo yekudzora ivimbiso yakavimbika uye inobatsira kune yakagadzikana chigadzirwa mhando uye yakavimbika yekugadzira system.
Chigadzirwa maitiro ehydroxypropyl methyl cellulose:
1. Properties: Ichi chigadzirwa ipfu chena, uye haina kunhuhwirira, inonaka uye haina chepfu.
2. Mvura yekuchengeta mhedzisiro: Nekuti chigadzirwa ichi chinogona kutora mvura kakawanda kurema kupfuura pachayo. Chengetedza kuchengetwa kwemvura yakakwira mudhaka, gypsum, pendi uye zvimwe zvigadzirwa.
3. Ichi chigadzirwa chinogona kunyungudutswa mumvura inotonhorera kuti iite lvväsvik viscous solvent.
4. Kuparara mune organic solvents: Nemhaka yokuti ine huwandu hwemajini e-hydrophobic, chigadzirwa ichi chinogona kunyungudutswa mune mamwe organic solvents, uye chinogonawo kunyungudutswa mune zvakasanganiswa zvinonyungudutsa zvemvura uye organic matter.
5. Kusagadzikana kwemunyu: Sezvo chigadzirwa ichi chisiri-ionic uye chisingaiti-polyelectrolyte, inenge yakagadzikana mumagetsi emvura emunyu wesimbi kana organic electrolytes. Panyaya ye electrolyte yakawandisa, inogona kukonzera gelation kana kunaya.
6. Chiitiko chepamusoro: Mushonga wemvura wechigadzirwa ichi une chiitiko chepamusoro.
Nguva yekutumira: Nov-29-2021
