Methyl Hydroxyethyl Cellulose (MHEC) inowanzoitika cellulose ether. Inowanikwa ne etherification ye cellulose uye inonyanya kushandiswa mumaindasitiri mazhinji akadai sekuvaka, mishonga, cosmetics, uye chikafu. MHEC ine mvura yakanaka solubility, thickening, kumiswa, uye bonding zvivakwa, uye chinhu chakakosha kushanda kwekuwedzera.
1. Chimiro chemakemikari uye kugadzirira
1.1 Chimiro chemakemikari
MHEC inowanikwa nechidimbu methylation uye hydroxyethylation ye cellulose. Chimiro chayo chemakemikari chinonyanya kuumbwa nekutsiviwa kweboka rehydroxyl pane cellulose molecular chain nemethyl (-CH₃) uye hydroxyethyl (-CH₂CH₂OH). Chimiro chayo chimiro chinowanzo kuratidzwa se:
Sero−��−����3+Sero−��−)
Sero rinomiririra cellulose molecular skeleton. Iyo dhigirii yekutsiva methyl uye hydroxyethyl mapoka inokanganisa zvimiro zveMHEC, sekunyungudika kwemvura uye viscosity.
1.2 Kugadzirira nzira
Kugadzirira kweMHEC kunonyanya kusanganisira matanho anotevera:
Etherification reaction: Ichishandisa cellulose seyakagadzirwa, inotanga kurapwa nealkaline solution (yakadai sesodium hydroxide) kumutsa mapoka ehydroxyl muselulosi. Zvadaro methanol uye ethylene oxide zvinowedzerwa kuita etherification reaction kuitira kuti mapoka ehydroxyl ari pa cellulose atsiviwa nemapoka emethyl nehydroxyethyl.
Neutralization uye kugeza: Mushure mekuita kwapera, iyo yakawandisa alkali inobviswa neasidhi neutralization reaction, uye chigadzirwa chinodzokororwa chinoshambidzwa nemvura kuti chibvise-zvigadzirwa uye zvisina kubatwa mbishi.
Kuomesa nekupwanya: Kumiswa kweMHEC kwakagezwa kwakaomeswa kuwana MHEC poda, uye pakupedzisira yakapwanyika kuti iwane fineness inodiwa.
2. Muviri uye makemikari zvinhu
2.1 Kutaridzika uye kunyungudika
MHEC ihupfu chena kana chiedza chero inonyungudika nyore nyore mumvura inotonhora uye inopisa, asi ine yakaderera solubility muorganic solvents. Kunyungudika kwayo kune hukama nepH kukosha kwemushonga, uye inoratidza kunyungudika kwakanaka mukusarerekera kune isina kusimba acidic renji.
2.2 Kukora uye kumiswa
MHEC inogona kuwedzera zvakanyanya viscosity yemhinduro mushure mekunyungudika mumvura, saka inoshandiswa zvakanyanya sehutsi. Panguva imwecheteyo, MHEC inewo kumira kwakanaka uye dispersibility, iyo inogona kudzivirira particle sedimentation, ichiita kuti ishandiswe sechinhu chinomisa mujasi uye zvinhu zvekuvaka.
2.3 Kugadzikana uye kuenderana
MHEC ine acid yakanaka uye alkali kugadzikana uye inogona kuchengetedza kugadzikana kwayo muhupamhi pH renji. Mukuwedzera, MHEC ine kushivirira kwakanaka kune electrolytes, iyo inoita kuti iite zvakanaka mumakemikari akawanda emakemikari.
3. Minda yekushandisa
3.1 Indasitiri yekuvaka
Mumunda wekuvaka, MHEC inonyanya kushandiswa seyakakora uye inochengetedza mvura mumiriri wezvinhu zvakaita sedhaka, putty, uye gypsum. MHEC inogona kunyatso kuvandudza kushanda kwekushanda kwezvinhu zvekuvaka, kuwedzera kunamatira uye anti-sagging zvivakwa panguva yekuvaka, kuwedzera nguva yakazaruka, uye panguva imwechete inovandudza kuchengetwa kwemvura kwezvinhu zvekudzivirira kuputika uye kuderedzwa kwesimba kunokonzerwa nekukurumidza kurasikirwa kwemvura.
3.2 Zvizoro
MHEC inoshandiswa semulsifier, thickener, uye stabilizer muzvizoro. Inogona kupa zvizoro kubata kwakanaka uye rheology, kuwedzera kugadzikana uye kushandisa ruzivo rwechigadzirwa. Semuenzaniso, muzvigadzirwa zvakaita semafuta ekuzora, makirimu, uye shampoos, MHEC inokwanisa kudzivirira stratification uye kunaya kwemvura uye kuwedzera viscosity yechigadzirwa.
3.3 Pharmaceutical industry
Muindasitiri yemishonga, MHEC inoshandiswa sebhainda, inosimudzira-kuburitswa mumiririri, uye inomisa mumiriri wemapiritsi. Inogona kuvandudza kuoma uye kuparara kwezvinhu zvemapiritsi uye kuvimbisa kugadzikana kusunungurwa kwemishonga. Mukuwedzera, MHEC inowanzoshandiswa mumishonga yekumisa kubatsira iyo inoshandiswa inoshandiswa inopararira zvakafanana uye inovandudza kugadzikana uye bioavailability yemishonga.
3.4 Indasitiri Yekudya
Muchikafu chekudya, MHEC inonyanya kushandiswa seyakakura uye yakagadzikana, uye yakakodzera kune zvakasiyana-siyana zvekudya zvekudya, zvakadai semukaka wemukaka, sauces, condiments, etc. Inogona kunyatso kuvandudza mararamiro uye kuravira kwezvokudya uye kuwedzera hupenyu hwesherufu. chikafu.
4. Kuchengetedzwa Kwezvakatipoteredza uye Kuchengetedza
4.1 Kushanda Kwezvakatipoteredza
MHEC ine biodegradability yakanaka uye hapana kusvibiswa kuri pachena kune zvakatipoteredza. Sezvo zvikamu zvayo zvikuru zviri cellulose uye zvigadzirwa zvayo, MHEC inogona kuderera zvishoma nezvishoma kuva zvinhu zvisingakuvadzi mumamiriro echisikigo uye hazvizokonzeri kukuvadza kwenguva refu kune ivhu nemvura.
4.2 Kuchengetedza
MHEC ine kuchengetedzwa kwakanyanya uye haina chepfu uye haina kukuvadza kumuviri wemunhu. Kana ichishandiswa mumaindasitiri ezvekuzora uye echikafu, inofanirwa kuenderana neakakodzera kuchengetedza zviyero uye mirau kuti ive nechokwadi chekuti iyo MHEC yemukati muchigadzirwa iri mukati meiyo yakatarwa. Panguva yekushandiswa, kutarisirwa kunofanira kutorwa kudzivirira kufemerwa kwehuruva yakawanda kuti urege kutsamwa kwekufema.
5. Future Development Trends
5.1 Kuvandudzwa Kwekuita
Imwe yeramangwana yekutsvagisa nzira yeMHEC ndeyekuenderera mberi nekuvandudza mashandiro ayo nekuvandudza maitiro ekubatanidza uye dhizaini yefomula. Semuenzaniso, nekuwedzera dhigirii rekutsiva uye nekugonesa chimiro chemolecular, MHEC inogona kuita zvirinani mumamiriro akakosha ekushandisa, senge tembiricha kuramba, asidhi uye alkali kuramba, nezvimwe.
5.2 Kuwedzera application
Nekuenderera mberi kwekuvandudzwa kwezvinhu zvitsva uye maitiro matsva, munda wekushandisa weMHEC unotarisirwa kuwedzera mberi. Semuenzaniso, mumunda wemasimba matsva uye zvinhu zvitsva, MHEC, sekuwedzera kwekushanda, inogona kuita basa rinowedzera rinokosha.
5.3 Kuchengetedzwa kwezvakatipoteredza uye kuchengetedza
Nekuvandudzwa kwekuziva kwezvakatipoteredza, kugadzirwa uye kushandiswa kweMHEC kunozovandudzawo mune yakawedzera hushamwari uye inochengetedza gwara. Tsvagiridzo yeramangwana inogona kutarisa kudzikisa kuburitswa kwemarara mukugadzira, kuvandudza biodegradability yezvigadzirwa, nekuvandudza maitiro ekugadzira akasvibira.
Methyl hydroxyethyl cellulose (MHEC), senge multifunctional cellulose ether, ine tarisiro yakakura yekushandisa uye kugona kwekusimudzira. Nekutsvagisa kwakadzama pamusoro pezvimiro zvayo zvemakemikari uye kuvandudza tekinoroji yekushandisa, MHEC ichaita basa rakakosha mumaindasitiri akasiyana uye inobatsira mukuvandudza mashandiro echigadzirwa uye kuchengetedza kwezvakatipoteredza. Mundima yeramangwana yesainzi yezvigadzirwa uye mainjiniya, kushandiswa kweMHEC kuchaunza humwe hutsva uye kubudirira.
Nguva yekutumira: Jun-21-2024