I-HydroxyYethylcellulose (HEC) iyi-polymer ebalulekile esetshenziswa kabanzi kwizimboni ezahlukahlukene, ikakhulukazi upende, ukumboza, ukunamathela kanye nemikhiqizo yokunakekelwa komuntu siqu. Enye yezakhiwo zayo eziphawuleka yikhono layo ukuthuthukisa ukumelana nefomula ku-SAG, iqinisekisa ukuthi sizinzile ngisho nesicelo.
I-HydroxyYethylcellulose (HEC) yi-polymer encibilikayo yamanzi etholakala ku-cellulose, i-polysaccharide etholakala ezindongeni zamaseli ezitshalo. Isakhiwo saso samakhemikhali esiyingqayizivele nezakhiwo zikwenza kube isithako esiguquguqukayo kuzinhlelo zokusebenza eziningi zezimboni. Enye yezimpawu ezibalulekile ze-HEC yikhono layo lokuthuthukisa ukumelana kwe-sag kwezindlela ezahlukahlukene, ezidlala indima ebalulekile ekuqinisekiseni ikhwalithi nokusebenza komkhiqizo wokugcina. Kulesi sihloko, sibheka ukujula okujulile ezakhiweni ze-HEC, inqubo yayo yokukhiqiza, neqhaza lazo ekuthuthukiseni ukumelana kwe-SAG ezimbonini ezahlukene.
1. Isakhiwo samakhemikhali nezakhiwo ze-HEC:
I-HEC ihlanganiswe ngokuthembela iselula nge-ethylene oxide futhi uyiphathe nge-alkali. Le nqubo yethula amaqembu e-hydroxyethyl emgogodleni we-cellulose, enikezela nge-solubility yamanzi kanye nokwenza ngcono ukuhambisana kwawo nezinhlelo ezinamanzi. Izinga lokufaka esikhundleni (DS) linquma ukufakwa esikhundleni se-hydroxyethyl ku-cellulose chain, ngaleyo ndlela kuthinta i-solubity, ukubonana nezinye izakhiwo ze-polymer. Ngaphezu kwalokho, i-hec ibonisa indlela yokuziphatha ye-pseudoplastic futhi ukubonakala kwayo kuncipha ngaphansi kwengcindezi ye-shear, ngaleyo ndlela kube lula ukufaka isicelo nokuxubanisa ekwakhiweni.
Inqubo yokukhiqiza ye-2.Hec:
Inqubo yokukhiqiza ye-HEC ifaka izinyathelo eziningana njengokukhethwa komthombo weselula, i-ethylene oxide ukusheshisa, i-alkalization, ukuhlanzwa nokumiswa. Amapharamitha ahlukahlukene anjengamazinga okushisa okuphendula, isikhathi sokuxazulula kanye nesikhathi sokuphendula alawulwa ngokucophelela ukuze afinyelele isilinganiso esifunekayo sokufakwa esikhundleni kanye nesisindo se-molecular. Umkhiqizo we-HEC ophumayo bese uhlanzwa kahle ukususa ukungcola futhi uqinisekise ikhwalithi nokusebenza kwayo kuzinhlelo zokusebenza.
3. Ukusetshenziswa kwe-HEC:
Ngenxa yezakhiwo zayo ezisebenzayo kanye nokuhambisana nezinhlelo ezisuselwa emanzini, i-HEC isetshenziswa kabanzi kwizimboni ezahlukahlukene. Embonini we-Paint and Coatings, i-HEC isetshenziswa njengokushintsha kwe-Rheology ukuthuthukisa ukulawulwa kwe-viscosity, ukumelana nokumelana ne-SAG ekwakhiweni. Kusetshenziswa futhi ezinamathela ukuze kuthuthukiswe amandla e-bond, ukugcinwa komswakama kanye nomswakama. Ngokwengeziwe, i-HEC isithako esivamile emikhiqizweni yokunakekelwa komuntu siqu efana nama-shampoos, ama-lotion, kanye nokhilimu futhi inokuqina, ukuqina, kanye nezakhiwo ezenziwe ngefilimu.
4. Ukubaluleka kwe-anti-sag:
Ukumelana kwe-SAG kuyinto ebalulekile impahla ekwakhiweni, ikakhulukazi kuzinhlelo zokusebenza lapho ukuzinza okuthe mpo nokufana kwe-coating kubalulekile. I-SAGGBING ivela lapho ifomula ingekho ebonakalayo ngokwanele ukusekela isisindo sayo, okubangela ukusatshalaliswa okungalingani kanye nokuphazamiseka ezindaweni ezibheke phezulu. Le nto ingaholela ekulahlekelweni ngumkhiqizo, iphinde isebenze futhi ilahlekelwe ama-aesthetics, igqamisa ukubaluleka kokumelana kwe-SAG ekuzuzeni ukuqeda okuphezulu kanye nokumboza.
Indlela ka-5.Hec yokuthuthukisa ukumelana kwe-SAG:
Ukumelana kwe-sag okuthuthukisiwe kwe-HEC kungabikwa ngezindlela eziningi. Okokuqala, i-HEC isebenza njengomkhulu, yandisa i-viscosity yefomula nokunikeza ukwesekwa okuhlelekile ukuvikela ukugcwala. Okwesibili, isenzo sayo sepulasitiki se-pseudo senza kube lula ukufaka isicelo kanye nezinga ngenkathi kugcinwa ukubonana okwanele ukuvikela ukugcwala ngemuva kwesicelo. Ngokwengeziwe, i-HEC yakha isakhiwo senethiwekhi ekwakhekeni, ukuhambisa ukuqina kanye nokuvimbela ukuhamba ngaphansi kwamandla adonsela phansi. Ngokubambisana, lezi zinqubo zisiza ukuthuthukisa ukumelana kwe-sag, ukuqinisekisa ngisho nokuhlangana nokusebenza kahle komkhiqizo wokugcina.
IHydroxyYethylcellulose (HEC) idlala indima ebalulekile ekuthuthukiseni ukumelana kwe-SAG ezimbonini ezahlukahlukene ngenxa yesakhiwo sayo esiyingqayizivele samakhemikhali kanye nezakhiwo. Ngamandla ayo ukukhulisa i-viscosity, ahlinzeke ngokusekelwa okuhlelekile futhi wakhe inethiwekhi ezinzile ekwakhiweni, i-hec iqinisekisa ukusetshenziswa okufanayo, ukuqina okuthe xaxa, ekugcineni uthuthukise ikhwalithi nokusebenza komkhiqizo wokugcina. Njengoba izimboni ziyaqhubeka nokufuna ukugqokwa okuphezulu, ukunamathela kanye nemikhiqizo yokunakekelwa komuntu siqu, ukubaluleka kwe-HEC ekufezeni ukumelana kwe-sag kuhlala kubucayi, ukugqamisa indima yayo ebalulekile ekwakhiweni.
Isikhathi sePosi: Feb-19-2025