Hydroxyethyl cellulose yog ib qho polymer uas tsis yog ionic uas yaj tau hauv dej ua los ntawm cellulose, ib yam khoom siv polymer ntuj, los ntawm ntau yam txheej txheem tshuaj lom neeg. Nws yog ib qho dawb lossis daj, tsis muaj ntxhiab thiab tsis muaj saj, uas tuaj yeem yaj rau hauv dej txias thiab dej kub, thiab qhov nrawm ntawm kev yaj nce ntxiv nrog rau qhov kub nce. Feem ntau, nws tsis yaj rau hauv feem ntau cov kuab tshuaj organic. Nws yog siv los ua cov khoom ua kom tuab thiab ruaj khov hauv cov xim latex. Nws yooj yim tawg rau hauv dej txias nrog pH tsawg dua lossis sib npaug rau 7, tab sis nws yooj yim sib sau ua ke hauv cov kua alkaline, yog li nws feem ntau npaj ua ntej rau kev siv tom qab, lossis dej kua qaub tsis muaj zog lossis cov kua organic ua rau hauv slurry, thiab nws kuj tuaj yeem sib xyaw nrog lwm cov hmoov. Cov khoom xyaw qhuav sib xyaw ua ke.
Cov yam ntxwv ntawm hydroxyethyl cellulose:
HEC yaj tau hauv dej kub lossis dej txias, thiab tsis precipitate ntawm qhov kub siab lossis npau, uas ua rau nws muaj ntau yam solubility thiab viscosity yam ntxwv, thiab tsis yog thermal gelation.
Nws tuaj yeem nyob ua ke nrog ntau yam polymers, surfactants, thiab ntsev uas yaj hauv dej, thiab yog ib qho khoom siv colloidal thickener zoo heev rau cov tshuaj uas muaj cov electrolytes siab.
Lub peev xwm khaws dej tau ob npaug ntawm methyl cellulose, thiab nws muaj kev tswj hwm dej zoo dua.
Piv nrog rau cov methyl cellulose thiab hydroxypropyl methyl cellulose uas tau lees paub, lub peev xwm ntawm HEC dispersing yog qhov phem tshaj plaws, tab sis lub peev xwm tiv thaiv colloid yog qhov muaj zog tshaj plaws.
Kev tsim kho zoo heev; nws muaj qhov zoo ntawm kev txuag zog, tsis yooj yim rau drip, anti-sag, zoo anti-splash, thiab lwm yam.
Zoo sib xws nrog ntau yam surfactants thiab preservatives siv rau hauv cov xim latex.
Qhov viscosity cia yog ruaj khov, uas tuaj yeem tiv thaiv cov hydroxyethyl cellulose dav dav los ntawm kev txo qhov viscosity ntawm cov xim latex thaum lub sijhawm khaws cia vim yog qhov kev rhuav tshem ntawm cov enzymes.
Lub sijhawm tshaj tawm: Tsib Hlis-25-2023