Hydroxyethyl Methyl Cellulose (HEMC)imusanganiswa unokosha we cellulose ether uye ndeye non-ionic cellulose ether. HEMC inowanikwa nekuchinja kwemakemikari ne cellulose yechisikigo sezvinhu zvakagadziriswa. Maumbirwo ayo ane hydroxyethyl uye methyl substituents, saka ine hunhu hwakasiyana hwemuviri nemakemikari uye inoshandiswa zvakanyanya muzvinhu zvekuvaka, machira, makemikari ezuva nezuva, mishonga nedzimwe nzvimbo.
1. Hunhu hwemuviri nemakemikari
HEMC inowanzova upfu huchena kana husina kuchena, hunonyungudika nyore nyore mumvura inotonhora kuti hugadzire mhinduro yecolloidal yakajeka kana kuti ine madhaka zvishoma. Hunhu hwayo hukuru hunosanganisira:
Kunyungudika: HEMC inogona kunyungudika nekukurumidza mumvura inotonhora, asi haina kunyungudika kwakanyanya mumvura inopisa. Kunyungudika kwayo uye kusimba kwayo zvinochinja nekuchinja kwetembiricha uye pH kukosha.
Kukora: HEMC ine kugona kwakasimba kwekukora mumvura uye inogona kuwedzera kunaka kwemushonga.
Kuchengeta mvura: Inoshanda zvakanaka pakuchengetedza mvura uye inogona kudzivirira kurasikirwa nemvura muchinhu chacho.
Hunhu hwekugadzira firimu: HEMC inogona kugadzira firimu rinoonekera rakafanana pamusoro uye rine kusimba kwakaringana.
Kunyorova: Nekuda kwechimiro chayo chakasiyana chemamorekuru, HEMC inogona kupa mafuta ekunyorova akanaka kwazvo.
2. Maitiro ekugadzira
Maitiro ekugadzira HEMC anosanganisira matanho anotevera:
Alkalization: Selulosi yechisikigo inorapwa mumamiriro ezvinhu ealkaline kuti igadzire alkaline cellulose.
Kuita kweEtherification: Nekuwedzera zvinhu zvinosanganisa methylating (senge methyl chloride) uye zvinhu zvinosanganisa hydroxyethylating (senge ethylene oxide), cellulose inopinda mukuita kwe etherification pakupisa nekumanikidzwa kwakanangana.
Mushure mekurapwa: Chigadzirwa chisina kucheneswa chinobviswa, chinogezwa, chinoomeswa, uye chinopwanywa kuti chiwanikwe pakupedzisiraHEMCzvigadzirwa.
3. Nzvimbo huru dzekushandisa
(1) Zvinhu zvekuvaka HEMC inoshandiswa zvakanyanya mumunda wekuvaka, kunyanya mumota wesimende, upfu hweputty, tile adhesive, gypsum nezvimwe zvigadzirwa. Inogona kuvandudza viscosity, kuchengetedza mvura uye hunhu hwezvinhu zvekuvaka hunodzivirira kudonha, kuwedzera nguva yekuvhurwa, uye nokudaro kuvandudza mashandiro ekuvaka.
(2) Pendi neinki Mupendi, HEMC inoshanda semushonga unosimbisa uye unosimbisa emulsifier kuti ivandudze kunaka kwependi uye kudzivirira kutsvedza kwependi. Pamusoro pezvo, inogona kupa hunhu hwakanaka hwekugadzira firimu, zvichiita kuti pendi ive yakafanana uye yakatsetseka.
(3) Mishonga nezvizoro HEMC inogona kushandiswa semushonga unonamira uye kugadzira firimu mumapiritsi emishonga, pamwe chete nechinhu chinonamira uye chinonyorovesa muzvigadzirwa zvekuchengetedza ganda. Nekuda kwekuchengetedzwa kwayo kwakanyanya uye kubatana kwayo, inowanzoshandiswa muzvigadzirwa zvakaita semadonhwe emaziso, zvinochenesa kumeso, uye mafuta anonhuhwirira.
(4) Makemikoro ezuva nezuva Mumakemikari ezuva nezuva akadai semaseseji nemazino, HEMC inoshandiswa sechinhu chinosimbisa uye chinosimbisa tsinga kuti chigadzirwa chiwedzere kugadzikana uye rheology.
4. Zvakanakira uye kuchengetedzwa kwezvakatipoteredza
HEMC ine hunhu hwekuchengetedza nharaunda zvakanyanya uye haizokonzere kusvibiswa kwenguva refu kunharaunda. Panguva imwe chete, haina chepfu uye haina njodzi, haitsamwisi ganda revanhu uye mucous membranes, uye inosangana nezvinodiwa zvekuchengetedzwa kwezvakatipoteredza zvakasvibira uye budiriro inoenderera mberi.
5. Tarisiro yemusika uye mafambiro ebudiriro
Nekukura kweindasitiri yekuvaka uye indasitiri yemakemikari yezuva nezuva, kudiwa kwemusika weHEMC kuri kuramba kuchikura. Mune ramangwana, sezvo vanhu vachinyanya kutarisisa zvinhu zvisina njodzi kune zvakatipoteredza uye vachivandudza mashandiro ezvigadzirwa, HEMC ichashandiswa zvakanyanya muminda yakasiyana-siyana. Pamusoro pezvo, kutsvagisa nekugadzira zvigadzirwa zvitsva zveHEMC zvinoshanda (zvakadai sezvinodzivirira kupisa kwakanyanya uye zvemhando yekukurumidza) zvichasimudzirawo kushandiswa kwayo mumusika wepamusoro-soro.
Semuchina we multifunctional uye high-performance cellulose ether,hydroxyethyl methylcellulose (HEMC)ine basa rakakosha mukuvaka, machira ekuputira, mishonga nedzimwe nzvimbo dzine hunhu hwayo hwepanyama nemakemikari. Nekufambira mberi kwesainzi netekinoroji uye kuwedzera kweminda yekushandisa, HEMC ichaita basa rakakosha muindasitiri yemazuva ano uye ichapa rutsigiro rwakasimba mukusimudzira maindasitiri ane hukama.
Nguva yekutumira: Mbudzi-11-2024