Kugadzira hydroxytHyl Cellulose (HEC) inosanganisira kutevedzana kwemakemikari maitiro ekugadzirisa cellulose, polymer yakasikwa inotorwa kubva kune zvidyarwa. HEC inoshandiswa zvakanyanya mumaindasitiri akasiyana-siyana, kusanganisira mishonga yemishonga, cosmetics, chikafu, nekuda kwekuita kwayo, kudzikisira, uye kudzikamisa mvura.
Nhanganyaya kuHydroxyTHYL Cellulose (Hec)
HydroxytHyl Cellulose (Hec) is is is is is-ionic, yemvura-yakadzika polymer yakatorwa kubva ku cellulose kuburikidza nemakemikari kugadziridzwa. Iyo inoshandiswa zvakanyanya seyakakura, gomba, uye kusimbisa mumiririri mumaindasitiri akasiyana siyana.
Zvishandiso zvakagadzirwa
Cellulose: Iyo yekutanga mbichana zvinyorwa zvehec kugadzirwa. Cellulose inogona kuwanikwa kubva kune dzakasiyana-siyana zvinhu zvakavakirwa sehuni dzehuni, machira, kana ekurima zvasara.
Ethylene oxide (eo): kiyi yemakemikari inoshandiswa kuunza hydroxytHyl mapoka kune iyo cellulose backbone.
Alkali: kazhinji sodium hydroxide (naoh) kana potasasium hydroxide (koh) inoshandiswa seyakajairwa mukuita.
Kugadzira maitiro
Iko kugadzirwa kwehyoko kunosanganisira kuwedzerwa kwemheremalose neEngelyne oxide pasi pealkaline mamiriro.
Matanho anotevera ataure maitiro acho:
1. Pre-kurapwa kwe cellulose
Cellulose inotanga kunatswa kubvisa tsvina senge lignin, hemicellose, uye mamwe anodzingwa. Iyo cellufied cellulose inozoomeswa kune chaiyo yekunyorova zvemukati.
2. Etherafifitifitifitifiti yekuita
Kugadzirira kweAlkaline Solution: Mhinduro Yemvura yeSodium Hydroxide (Naoh) kana Potassium Hydroxide (Koh) yakagadzirirwa. Iko kusimbiswa kweiyo alkali solution inokosheswa uye inoda kuve yakagadzirirwa zvichienderana neiyo degree raunoda kwekutsiva (DS) yeiyo yekupedzisira chigadzirwa.
Reaction Setup: yakacheneswa cellulose yakaparadzirwa muAlkali Solution. Musanganiswa wacho unopiswa kune imwe tembiricha yekupisa, kazhinji inotenderera 50-70 ° C, kuve nechokwadi chekuti cellulose yakazvimba zvizere uye inowanikwa kuti uite.
Kuwedzera kwe ethylene oxide (eo): EHLYLE OULIDE (EO) inowedzerwa zvishoma nezvishoma kune iyo reaction chombo ichi ichiramba tembiricha uye ichimutsa nguva dzose. Maitiro acho ari exothermic, saka tembiricha kutonga kwakakosha kudzivirira kuderera.
Reaction Kuongorora: Kufambira mberi kweizvozvo kuongororwa kunoongororwa nekuongorora samples nguva nenguva. Matipi ezvinyorwa zvakaita seanopfuura-infrarefu spectrarecopy (ftir) inogona kushandiswa kuona iyo degree rekutsiva
Kusarerekera uye kugeza: Kamwe iyo yaunoda DS inowanikwa, maitiro anodzimwa nekumisikidza kusarudzika iyo alkaline solution ine acid, kazhinji acetic acid. Iyo Hec inokonzerwa yakabva yashambidzwa kwazvo nemvura kuti ubvise chero imwe gadziriro isina kujairika uye kusachena.
3. Kuchenesa uye kuoma
Iyo yakashambidzwa hec inowedzeredzwa yakanatswa kuburikidza neyekupedzisira kana centrifigulation kubvisa chero kusvibiswa kwakasarudzika. Iyo yakacheneswa hec inozoomeswa kune chaiyo inonyorova yezvinhu kuti uwane chigadzirwa chekupedzisira.
Mhando yekudzora
Kudzora kwemhando kwakakosha mukati meiyo hec kugadzira maitiro ekugadzira kuve nechokwadi chekuenderana uye kuchena kwechigadzirwa chekupedzisira. Key paramita kuti utarise zvinosanganisira:
Degree rekutsiva (DS)
Viscosity
Zvinyoro nyoro
pH
Kuchena (kusavapo kwekusvibiswa)
Nyanzvi dzekuongorora dzakadai seFTir, viscosity zviyero, uye ongororo dzelimental dzinowanzo shandiswa kumhando yemhando.
Zvikumbiro zveHydroxyTHYL Cellulose (HEC)
Hec inowana zvikumbiro mumaindasitiri akasiyana-siyana nekuda kwezvivakwa zvaro zvinhu:
Pharmaceuticals: Inoshandiswa seyemumiriri wakakora mumuromo wemuromo, mamiriro emusoro, uye anodzora-kusunungura zvinodhaka zvinodhaka.
Cosmetics: inowanzo shandiswa mumakirimu, lotions, uye shampoos seanotendeti uye stabilizer.
Chikafu: chakawedzerwa kune zvigadzirwa zvekudya sekukora uye gelling mumiririri, emulsifier, uye stabilizer.
Kuvaka: Inoshandiswa mumutero-based-based moturu uye ma grouts kuti uvandudze kushanda uye kuchengetwa kwemvura.
Zvemamiriro ekunze uye Kuchengetedza Kufunga
Impundality Impact: Kugadzirwa kwehyou kunosanganisira kushandiswa kwemakemikari akadai se ethylene oxide uye alkalis, iyo inogona kuve nemamiriro ekunze. Yakakodzera marara manejimendi uye kuomerera kune mirau yakakosha kuti ideredze zvakaringana.
Chengetedzo: Etleyle Oxide inyaya inobata uye inopisa gasi, inoshandisa njodzi yekuchengetedza panguva yekubata nekuchengetedza. Yakaringana mhepo, yekudzivirira yemunhu pachako (PPE), uye protocols yekuchengetedza inofanirwa kuve nechokwadi chekuchengetedza mushandi.
HydroxytHyl Cellulose (Hec) inzvimbo yakakosha polymer ine maindasitiri akasiyana siyana mumaindasitiri kubva pamishonga yekuvakwa. Kugadzirwa kwayo kunosanganisira kuwedzerwa kwemheremalose neEngelyne oxide pasi pealkaline mamiriro. Mhando dzekudzora matanho akakosha kuti uve nechokwadi chekuenderana uye kuchena kwechigadzirwa chekupedzisira. Kufunga kwezvakatipoteredza uye nekuchengetedza kunofanirawo kugadziriswa mukati meiyo nzira yekugadzira. Nekutevera maitiro akakodzera uye protocol, hec inogona kugadzirwa zvakanaka paunenge uchideredza zvakashata zvemamiriro ekunze uye kuona kuchengetedzwa kwemushandi.
Ichi chinyorwa chakazara chinovhara chirongwa chekugadzira che hydroxethyl celluloseet (hec) zvakadzama, kubva kune zvigadzirwa zvekushandisa kune zvemhando yepamusoro uye zvinonyatsonzwisisa nezve iyi yakakosha polymer maitiro.
Kutumira Nguva: Kubvumbi-10-2020