Hydroxyethyl Cellulose (HEC) ipolymer isinganyunguduke mumvura inoshandiswa zvakanyanya mukuputira, zvizoro, mishonga, chikafu, kugadzira mapepa, kubhowa kwemafuta nedzimwe nzvimbo dzemaindasitiri. Imusanganiswa we ether we cellulose unowanikwa ne etherification ye cellulose, umo hydroxyethyl inotsiva chikamu che hydroxyl groups ye cellulose. Hunhu hwepanyama uye hwemakemikari hwe hydroxyethyl cellulose hunoita kuti ive chimwe chezvinhu zvakakosha zve thickeners, gelling agents, emulsifiers uye stabilizers.
Pokufashaira kwehydroxyethyl cellulose
Hydroxyethyl cellulose ipolymer yakakura ine huremu hwakawanda, uye pombi yayo yekufashaira haisi nyore kuiona seyemakemikari madiki emamorekuru. Mukushandiswa kwayo, zvinhu zvakawanda zvemamorekuru zvakaita sehydroxyethyl cellulose hazvina pombi yakajeka yekufashaira. Chikonzero ndechekuti zvinhu zvakadaro zvinoora panguva yekupisa, pane kushanduka zvakananga kubva mumvura kuenda kugasi kuburikidza nekuchinja kwechikamu sezvinhu zvidiki zvemamorekuru. Saka, pfungwa ye "pombi yekufashaira" yehydroxyethyl cellulose haishande.
Kazhinji, kana hydroxyethyl cellulose yapiswa pakupisa kwakanyanya, inotanga yanyungudika mumvura kana organic solvent kuti igadzire colloidal solution, uye kana tembiricha yakwira, polymer chain inotanga kutyoka uye pakupedzisira kuora kwekupisa, ichiburitsa mamorekuru madiki akadai semvura, carbon dioxide nezvimwe zvinhu zvinoputika pasina kufashaira kwakajairika. Nokudaro, hydroxyethyl cellulose haina poindi yakajeka yekufashaira, asi tembiricha yekuora, iyo inosiyana zvichienderana nehuremu hwayo hwemamorekuru uye mwero wekutsiva. Kazhinji, tembiricha yekuora kwekupisa kwehydroxyethyl cellulose inowanzo kuve pamusoro pe200°C.
Kugadzikana kwekupisa kwehydroxyethyl cellulose
Hydroxyethyl cellulose ine kugadzikana kwakanaka kwemakemikari patembiricha yemumba, inogona kutsungirira mamiriro akasiyana-siyana easidhi nealkali, uye ine kusimba kwekupisa. Zvisinei, kana tembiricha yakakwira zvakanyanya, kunyanya kana pasina zvinonyungudutsa kana zvimwe zvinosimbisa, cheni dzepolymer dzinotanga kutyoka nekuda kwekupisa. Maitiro aya ekuora kwekupisa haaperekedzwi nekufashaira kuri pachena, asi pane kutyoka zvishoma nezvishoma kwecheni uye kupera simba remvura, zvichiburitsa zvinhu zvinoshanduka uye pakupedzisira zvichisiya zvigadzirwa zvakakangwa.
Mukushandiswa kwemaindasitiri, kudzivirira kuora kunokonzerwa nekupisa kwakanyanya, hydroxyethyl cellulose haiwanzo sangana nemamiriro ezvinhu anodarika kupisa kwayo. Kunyangwe mukushandiswa kwekupisa kwakanyanya (sekushandisa mvura yekuboorera mafuta), hydroxyethyl cellulose inowanzo shandiswa pamwe chete nezvimwe zvinhu kuti iwedzere kugadzikana kwayo pakupisa.
Kushandiswa kwehydroxyethyl cellulose
Kunyangwe hydroxyethyl cellulose isina pokufashaira yakajeka, kunyungudika kwayo uye kugona kwayo kukora zvinoita kuti ishandiswe zvakanyanya mumaindasitiri mazhinji. Semuenzaniso:
Indasitiri yekupenda: hydroxyethyl cellulose inogona kushandiswa sechinosimbisa ganda kuti ibatsire kugadzirisa rheology yekupenda, kudzivirira kunaya kwemvura uye kuvandudza kuenzana uye kugadzikana kwekupenda.
Zvizoro nemakemikari ezuva nezuva: Chinhu chakakosha muzvinwiwa zvakawanda zvekuchenesa, zvigadzirwa zvekuchengetedza ganda, shampoos uye toothpaste, izvo zvinogona kupa chigadzirwa ichi kusimba kwakakodzera, kunyorovesa uye kugadzikana.
Indasitiri yemishonga: Mukugadzira mishonga, hydroxyethyl cellulose inowanzoshandiswa mukugadzira mapiritsi anoburitswa kwenguva refu uye machira ekuputira kudzora huwandu hwekuburitswa kwemishonga.
Indasitiri yezvekudya: Sechinosimbisa, chinosimbisa uye chinosanganisa chikafu, hydroxyethyl cellulose inoshandiswawo muzvekudya, kunyanya mu ice cream, jelly uye sauces.
Kuchera mafuta: Pakuchera mafuta munzvimbo dzinoshandiswa mafuta, hydroxyethyl cellulose chinhu chakakosha mukuchera mvura, izvo zvinogona kuwedzera kusimba kwemvura, kudzikamisa madziro etsime uye kuderedza kurasikirwa nevhu.
Sezvinhu zvepolymer, hydroxyethyl cellulose haina pokufashaira yakajeka nekuti inoora pakupisa kwakanyanya panzvimbo pechinoitika chekufashaira. Tembiricha yayo yekuora kwekupisa inowanzo kuve pamusoro pe200°C, zvichienderana nehuremu hwayo hwemamorekuru uye mwero wekutsiva. Kunyange zvakadaro, hydroxyethyl cellulose inoshandiswa zvakanyanya mukuputira, zvizoro, mishonga, chikafu uye peturu nekuda kwehunhu hwayo hwakanaka hwekukora, gelling, emulsifying uye stabilizing. Mukushandiswa uku, inowanzo dzivirirwa kubva pakupisa kwakanyanya kuti ive nechokwadi chekuti inoshanda uye yakagadzikana.
Nguva yekutumira: Gumiguru-23-2024