IHydroxyethylcellulose (HEC) iyi-polymer engeyona i-ionic, encibilika emanzini etholakala ku-cellulose. Ivamise ukusetshenziswa ezimbonini ezahlukahlukene ezifana nemithi, izimonyo, ukudla, kanye nemikhiqizo yokunakekela umuntu ngenxa yokujiya kwayo, ukusimamisa, kanye nezakhiwo zegelling.
Isakhiwo seKhemikhali seHydroxyethylcellulose
I-HEC iyi-polymer ye-cellulose eguquliwe, lapho amaqembu e-hydroxyethyl ethulwa kumgogodla we-cellulose. Lokhu kuguqulwa kuthuthukisa ukuncibilika kwamanzi nezinye izakhiwo ze-cellulose. Amaqembu e-hydroxyethyl (-CH2CH2OH) ahlanganiswe ngokuhlanganyela kumaqembu e-hydroxyl (-OH) ye-molecule ye-cellulose. Lokhu kuguqulwa kushintsha izakhiwo ezingokomzimba nezamakhemikhali ze-cellulose, kuyenze ifanelekele uhla olubanzi lwezinhlelo zokusebenza.
Izimpawu zokuvutha
1. Ukuvutha
I-cellulose ehlanzekile iyinto evuthayo ngoba iqukethe amaqembu e-hydroxyl, angasha. Kodwa-ke, ukwethulwa kwamaqembu e-hydroxyethyl kumgogodla we-cellulose kushintsha izici zayo zokuvutha. Ukuba khona kwamaqembu e-hydroxyethyl kungathinta ukuziphatha kokuvutha kwe-HEC uma kuqhathaniswa ne-cellulose engashintshiwe.
2. Ukuhlola Ukuvutha
Ukuhlola ukuvutha kubalulekile ukuze kutholwe izingozi zomlilo ezihlobene nento ethile. Ukuhlola okujwayelekile okuhlukahlukene, okufana ne-ASTM E84 (Indlela Yokuhlola Ejwayelekile Yezici Zokushiswa Kokuphezulu Kwezinto Zokwakha) kanye ne-UL 94 (Okuvamile Kokuphepha Kokuvutha Kwezinto Zepulasitiki Zezingxenye Zamadivayisi Nezinto Zikagesi), zisetshenziselwa ukuhlola ukuvutha kwezinto. Lezi zivivinyo zihlola amapharamitha afana nokusabalala kwelangabi, ukukhula kwentuthu, nezici zokubasa.
Izici Ezithinta Ukuvutha
1. Okuqukethwe Umswakama
Ukuba khona komswakama kungathonya ukuvutha kwezinto. Izinto ze-Cellulos zivame ukungashi uma ziqukethe amazinga aphezulu omswakamo ngenxa yokumunca ukushisa kanye nomthelela wokupholisa kwamanzi. IHydroxyethylcellulose, njengoba incibilika emanzini, ingase ibe namanani ahlukahlukene omswakamo kuye ngezimo zemvelo.
2. Usayizi Wezinhlayiya kanye Nokuminyana
Usayizi wezinhlayiyana kanye nokuminyana kwempahla kungathinta ukuvutha kwayo. Izinto ezihlukaniswe kahle ngokuvamile zinendawo ephakeme, ekhuthaza ukuvutha ngokushesha. Kodwa-ke, i-HEC ivame ukusetshenziswa efomini eliyimpuphu noma eliyi-granulated elinosayizi wezinhlayiyana ezilawulwayo ukuze kuhlangatshezwane nezidingo ezithile zohlelo lokusebenza.
3. Ukuba khona Kwezithasiselo
Ezisetshenziswa ezingokoqobo, ukwakheka kwe-hydroxyethylcellulose kungase kuqukathe izithasiselo ezifana namaplasitiki, iziqinisi, noma izinqamuleli zomlilo. Lezi zengezo zingashintsha izici zokuvutha kwemikhiqizo esekwe ku-HEC. Isibonelo, ama-flame retardants angacindezela noma abambezele ukuthungela nokusabalala kwamalangabi.
Izingozi Zomlilo Nokucatshangelwa Kokuphepha
1. Isitoreji Nokuphatha
Ukugcinwa okufanele kanye nezinqubo zokuphatha kubalulekile ukuze kuncishiswe ingozi yezigameko zomlilo. IHydroxyethylcellulose kufanele igcinwe endaweni eyomile, enomoya omuhle kude nemithombo engaba khona yokuthungela. Kufanele kuqashelwe ukuvimbela ukuchayeka ekushiseni ngokweqile noma ekukhanyeni kwelanga okuqondile, okungase kubangele ukubola noma ukuthungela.
2. Ukuhambisana Nomthetho
Abakhiqizi nabasebenzisi bemikhiqizo equkethe i-hydroxyethylcellulose kufanele bahambisane nemithetho nezindinganiso zokuphepha ezifanele. Izindikimba ezilawulayo ezifana ne-Occupational Safety and Health Administration (OSHA) e-United States kanye ne-European Chemicals Agency (ECHA) e-European Union zinikeza imihlahlandlela yokuphatha nokusetshenziswa kwamakhemikhali ngokuphephile.
3. Izinyathelo Zokucisha Umlilo
Esimeni somlilo obandakanya i-hydroxyethylcellulose noma imikhiqizo equkethe i-HEC, izinyathelo ezifanele zokucima umlilo kufanele zisetshenziswe. Lokhu kungase kuhlanganise ukusebenzisa amanzi, isikhutha, izicisha-mlilo zamakhemikhali omile, noma igwebu, kuye ngesimo somlilo nendawo ezungezile.
I-hydroxyethylcellulose iyi-polymer ye-cellulose eguquliwe evame ukusetshenziswa ezimbonini ezihlukahlukene ngenxa yezakhiwo zayo zokujiya nokuzinzisa. Nakuba i-cellulose ehlanzekile ivutha umlilo, ukwethulwa kwamaqembu e-hydroxyethyl kushintsha izici zokuvutha kwe-HEC. Izinto ezinjengokuqukethwe komswakamo, usayizi wezinhlayiyana, ukuminyana, nokuba khona kwezithasiselo kungathonya ukuvutha kwemikhiqizo equkethe i-hydroxyethylcellulose. Ukugcinwa okufanele, ukuphatha, nokuhambisana nemithethonqubo yokuphepha kubalulekile ukuze kuncishiswe izingozi zomlilo ezihlobene ne-HEC. Ucwaningo olwengeziwe nokuhlola kungase kudingeke ukuze uqonde ngokugcwele ukuziphatha okuvuthayo kwe-hydroxyethylcellulose ngaphansi kwezimo ezahlukene kanye nokwakheka.
Isikhathi sokuthumela: Apr-09-2024