Seyakanyanya kukosha musanganiswa mukuvaka yakaoma-yakavhenganiswa zvigadzirwa zvedhaka, cellulose ether inoita basa rakakosha mukuita uye mutengo wedhaka rakaoma-musanganiswa. Kune mhando mbiri dze cellulose ethers: imwe ionic, yakadai se sodium carboxymethyl cellulose (CMC), uye imwe isiri-ionic, yakadai semethyl cellulose (MC), hydroxyethyl cellulose (HEC), Hydroxypropyl cellulose (HPMC), nezvimwewo. . Nekufarirwa kuri kuwedzera kwekushandiswa kwezvigadzirwa zvedhaka zvakakanyiwa, nyika yangu ichava mugadziri mukuru wepasi rose wedhaka rakakanyiwa, iko kushandiswa. ye cellulose ether ichawedzera kuwedzera, uye vagadziri vayo uye zvigadzirwa zvemhando zvichawedzerawo. Kuitwa kwechigadzirwa che cellulose ether mune yakaoma-yakasanganiswa dhaka yave iyo yekutarisisa kwevagadziri uye vashandisi.
Chinhu chinonyanya kukosha che cellulose ether ndiko kuchengetedza kwayo mvura mumidziyo yekuvaka. Pasina kuwedzera kwe cellulose ether, iyo yakatetepa yedhaka nyowani inooma nekukurumidza zvekuti simende haigone kunyorova nenzira yakajairika uye dhaka haigoni kuomesa uye kuwana kubatana kwakanaka. Panguva imwecheteyo, kuwedzerwa kwe cellulose ether kunoita kuti dhaka rive nepurasitiki yakanaka uye kushanduka, uye inovandudza kusungirirwa kwesimba redhaka. Ngatitaurei nezve maitiro ekushandiswa kwedhaka rakaoma-musanganiswa kubva pakuita kwechigadzirwa che cellulose ether.
1. Kunaka kwe cellulose
Iko kunaka kwe cellulose ether kunokanganisa kunyungudika kwayo. Semuenzaniso, iyo yakaderera kunaka kwe cellulose ether, iyo inokurumidza kunyungudika mumvura uye kuvandudzwa kwekuita kwekuchengetedza mvura. Naizvozvo, kunaka kwe cellulose ether kunofanirwa kuverengerwa seimwe yezvivakwa zvayo zvekuferefeta. Kazhinji kutaura, sieve yakasara ye cellulose ether fineness inopfuura 0.212mm haifanirwe kudarika 8.0%.
2. Kuomesa uremu chiyero
Huremu hwekuomeswa huremu hunoreva huwandu hwehuremu hwezvinhu zvakarasika muhuwandu hwemuenzaniso wekutanga kana cellulose ether yakaomeswa pane imwe tembiricha. Kune humwe hunhu hwe cellulose ether, kuomeswa kwehuremu huwandu hwakanyanya, izvo zvinozodzikisa zviri mukati mezvishandiso zvinoshandiswa mu cellulose ether, zvinokanganisa mashandisirwo emabhizinesi epasi, uye kuwedzera mutengo wekutenga. Kazhinji, kurasikirwa kwehuremu pakuomeswa kwe cellulose ether hakusi kupfuura 6.0%.
3. Sulfate ash content ye cellulose ether
Kune humwe hunhu hwe cellulose ether, iyo ash yemukati yakawandisa, izvo zvinozodzikisa zviri mukati mezvishandiso zvinoshandiswa mu cellulose ether uye zvinokanganisa mashandisiro ekushandiswa kwemabhizinesi ari pasi. Iyo sulfate ash yemukati ye cellulose ether chiyero chakakosha chekuita kwayo. Yakasanganiswa nemamiriro ekugadzirwa kwemazuva ano evagadziri vemunyika yangu varipo cellulose ether, kazhinji madota e MC, HPMC, HEMC haafaniri kudarika 2.5%, uye madota eHEC cellulose ether haafaniri kudarika 10.0%.
4. Viscosity ye cellulose ether
Kuchengetwa kwemvura uye kukora mhedzisiro ye cellulose ether zvakanyanya zvinoenderana neiyo viscosity uye dosi ye cellulose ether pachayo yakawedzerwa kune simende slurry.
5. Iyo pH kukosha kwe cellulose ether
Iyo viscosity ye cellulose ether zvigadzirwa zvichadzikira zvishoma nezvishoma mushure mekuchengetwa pane tembiricha yepamusoro kana kwenguva yakareba, kunyanya kune yakakwira-viscosity zvigadzirwa, saka zvakakosha kudzikamisa pH. Kazhinji, zvinokurudzirwa kudzora pH yemhando ye cellulose ether kusvika 5-9.
6. Light transmittance ye cellulose ether
Iyo mwenje transmittance ye cellulose ether inokanganisa zvakananga mashandisiro ayo ekushandisa mune zvekuvaka. Zvinhu zvikuru zvinokanganisa kufambiswa kwechiedza che cellulose ether ndezvi: (1) kunaka kwezvinhu zvakagadzirwa; (2) mhedzisiro yealkalization; (3) chiyero chemaitiro; (4) solvent reshiyo; (5) neutralization effect. Zvinoenderana nemhedzisiro yekushandisa, mwenje wekutumira cellulose ether haufanirwe kunge uri pasi pe80%.
7. Gel tembiricha ye cellulose ether
Cellulose ether inonyanya kushandiswa seviscosifier, plasticizer uye mvura yekuchengetedza mumiriri mune zvigadzirwa zvesimende, saka viscosity uye tembiricha yegel matanho akakosha kuratidza kunaka kwe cellulose ether. Iyo tembiricha yegel inoshandiswa kuona rudzi rwe cellulose ether, iyo inoenderana nedhigirii rekutsiva mamwe cellulose ethers. Mukuwedzera, munyu uye tsvina zvinogonawo kukanganisa kupisa kwegel. Kana kutonhora kwemushonga kuchikwira, cellulose polymer zvishoma nezvishoma inorasikirwa nemvura, uye viscosity yemhinduro inoderera. Kana iyo gel point yasvika, iyo polymer inoshaya mvura uye inoumba gel. Naizvozvo, muzvigadzirwa zvesimende, tembiricha inowanzodzorwa pazasi pekutanga tembiricha yegel. Pasi pemamiriro ezvinhu aya, kuderera kwekushisa, kunowedzera viscosity, uye zvakanyanya kuoneka mhedzisiro yekukora uye kuchengetedza mvura.
Nguva yekutumira: Jun-01-2023