IHydroxyethyl Cellulose (HEC) iyi-polymer engeyona i-ionic encibilika emanzini esetshenziswa kabanzi ekwembathweni, izimonyo, umuthi, ukudla, ukwenza iphepha, ukumba uwoyela neminye imikhakha yezimboni. Kuyinhlanganisela ye-cellulose ether etholwe nge-etherification ye-cellulose, lapho i-hydroxyethyl ithatha indawo yamaqembu e-hydroxyl we-cellulose. Izakhiwo zomzimba kanye namakhemikhali e-hydroxyethyl cellulose ziyenza ibe enye yezingxenye ezibalulekile zama-thickeners, ama-gelling agents, ama-emulsifiers kanye nama-stabilizers.
Indawo yokubilisa ye-hydroxyethyl cellulose
I-Hydroxyethyl cellulose iyi-polymer ye-molecular ephezulu enesisindo esikhulu samangqamuzana, futhi iphuzu layo elithile lokubilisa akulula ukulinquma njengalelo lezinto ezincane zamangqamuzana. Ekusetshenzisweni okungokoqobo, izinto eziphakeme zamangqamuzana njenge-hydroxyethyl cellulose azinalo indawo yokubilisa ecacile. Isizathu siwukuthi izinto ezinjalo zizobola ngesikhathi sokushisisa, kunokuba ziguquke ngokuqondile zisuka oketshezini ziye kugesi ngoshintsho lwesigaba njengezinto ezivamile zamangqamuzana amancane. Ngakho-ke, umqondo "wendawo yokubilisa" we-hydroxyethyl cellulose awusebenzi.
Ngokuvamile, lapho i-hydroxyethyl cellulose ishiswa ekushiseni okuphezulu, izoqala ukuncibilika emanzini noma ku-solvent ye-organic ukuze yenze isixazululo se-colloidal, bese kuthi ekushiseni okuphezulu, iketanga le-polymer liqale ukuphuka futhi ekugcineni libole ngokushisa, likhulule ama-molecule amancane njengamanzi, i-carbon dioxide nezinye izinto eziguquguqukayo ngaphandle kokwenza inqubo evamile yokubilisa. Ngakho-ke, i-hydroxyethyl cellulose ayinayo indawo yokubilisa ecacile, kodwa izinga lokushisa lokubola, elihluka ngesisindo samangqamuzana kanye nezinga lokushintshwa. Ngokuvamile, izinga lokushisa elishisayo lokubola kwe-hydroxyethyl cellulose livamise ukuba ngaphezu kuka-200°C.
Ukuzinza okushisayo kwe-hydroxyethyl cellulose
I-Hydroxyethyl cellulose inokusimama okuhle kwamakhemikhali ekamelweni lokushisa, ingamelana nohla oluthile lwezindawo ezine-asidi ne-alkali, futhi inokumelana okuthile nokushisa. Kodwa-ke, lapho izinga lokushisa liphezulu kakhulu, ikakhulukazi lapho kungabikho ama-solvents noma amanye ama-stabilizers, amaketanga e-polymer azoqala ukuphuka ngenxa yesenzo sokushisa. Le nqubo yokubola okushisayo ayiphelezelwa ukubilisa okusobala, kodwa kunalokho ukuphuka kweketango kancane kancane kanye nokusabela kokuphelelwa amandla kwamanzi, ukukhulula izinto eziguquguqukayo futhi ekugcineni kushiye imikhiqizo ye-carbonized.
Ezisetshenziswa zezimboni, ukuze kugwenywe ukubola okubangelwa izinga lokushisa eliphezulu, i-hydroxyethyl cellulose ngokuvamile ayivezwa endaweni edlula izinga lokushisa layo lokubola. Ngisho nasekusetshenzisweni kwezinga lokushisa eliphezulu (njengokusebenzisa uketshezi lokumba lwe-oilfield), i-hydroxyethyl cellulose ivamise ukusetshenziswa ngokuhlangana nezinye izinto ukuze kuthuthukiswe ukuzinza kwayo okushisayo.
Ukusetshenziswa kwe-hydroxyethyl cellulose
Nakuba i-hydroxyethyl cellulose ingenayo indawo yokubilisa ecacile, izici zayo zokuncibilika nokujiya ziyenza isetshenziswe kabanzi ezimbonini eziningi. Ngokwesibonelo:
Imboni yokumboza: I-hydroxyethyl cellulose ingasetshenziswa njenge-thickener ukusiza ukulungisa i-rheology ye-coating, ukuvimbela imvula kanye nokwenza ngcono izinga kanye nokuzinza kwe-coating.
Izimonyo namakhemikhali ansuku zonke: Kuyisithako esibalulekile ezintweni eziningi zokuhlanza, imikhiqizo yokunakekelwa kwesikhumba, ama-shampoos kanye nemithi yokuxubha, enganikeza umkhiqizo i-viscosity efanele, umswakama nokuzinza.
Imboni yezemithi: Emalungiselweni okwenziwa kwemithi, i-hydroxyethyl cellulose ivamise ukusetshenziswa ekukhiqizeni amaphilisi akhishwa isikhathi eside kanye nesembozo ukulawula izinga lokukhishwa kwezidakamizwa.
Imboni yokudla: Njengesithako, isinzisi kanye ne-emulsifier, i-hydroxyethyl cellulose nayo isetshenziswa ekudleni, ikakhulukazi ku-ayisikhilimu, ijeli namasoso.
Ukumba uwoyela: Emgodini kawoyela, i-hydroxyethyl cellulose iyingxenye ebalulekile yoketshezi lokumba, olungakhuphula i-viscosity yoketshezi, luzinzise udonga lomthombo futhi lunciphise ukulahleka kodaka.
Njengento ye-polymer, i-hydroxyethyl cellulose ayinayo indawo yokubilisa ecacile ngoba ibola emazingeni okushisa aphezulu esikhundleni sento evamile yokubilisa. Izinga lokushisa layo lokubola okushisayo livame ukuba ngaphezu kuka-200°C, kuye ngesisindo salo samangqamuzana kanye nezinga lokushintsha. Noma kunjalo, i-hydroxyethyl cellulose isetshenziswa kabanzi ekwandeni, izimonyo, umuthi, ukudla kanye ne-petroleum ngenxa yokuqina kwayo okuhle kakhulu, i-gelling, i-emulsifying kanye nezindawo zokuzinzisa. Kulezi zinhlelo zokusebenza, ivamise ukugwenywa ukuthi ingavezwa amazinga okushisa aphakeme kakhulu ukuze kuqinisekiswe ukusebenza kwayo nokuzinza.
Isikhathi sokuthumela: Oct-23-2024