Hydroxyethyl cellulose (HEC) fari ne ko haske rawaya, mara wari, ba mai guba fibrous ko powdery m shirya ta etherification na alkaline cellulose da ethylene oxide (ko chlorohydrin). Nonionic soluble cellulose ethers. Baya ga kauri, dakatarwa, ɗaure, iyo, yin fim, tarwatsawa, riƙe ruwa da samar da colloid masu kariya, yana da kaddarorin masu zuwa:
1. HEC yana soluble a cikin ruwan zafi ko sanyi, kuma baya tasowa a babban zafin jiki ko tafasa, don haka yana da nau'i mai yawa na solubility da danko, da kuma ba-zazzabi gelation;
2. Ba-ionic kanta ba zai iya zama tare da wasu nau'o'in nau'in polymers masu narkewa da ruwa, surfactants da salts, kuma yana da kyau mai girma colloidal thickener dauke da high-concentration electrolyte mafita;
3. Ƙarfin ajiyar ruwa ya ninka sau biyu fiye da na methyl cellulose, kuma yana da mafi kyawun tsari.
4. Idan aka kwatanta da methyl cellulose da aka sani da hydroxypropyl methyl cellulose, da dispersing ikon HEC ne mafi muni, amma m colloid yana da karfi da iko. Saboda HEC yana da kyawawan kaddarorin thickening, dakatarwa, watsawa, emulsifying, bonding, ƙirƙirar fim, kare danshi da samar da colloid mai kariya, an yi amfani dashi sosai a cikin binciken mai, sutura, gini, magani da abinci, yadi, takarda da polymer polymerization. da sauran fagage.
Matakan kariya:
Tun da surface-bi da hydroxyethyl cellulose ne foda ko cellulose m, yana da sauƙi a rike da kuma narke a cikin ruwa muddin an lura da wadannan al'amura.
1. Kafin da kuma bayan ƙara hydroxyethyl cellulose, dole ne a ci gaba da motsawa har sai bayani ya kasance cikakke kuma bayyananne.
2. Dole ne a siffata shi a cikin ganga mai gauraya sannu a hankali, kuma kada kai tsaye ƙara hydroxyethyl cellulose wanda aka kafa zuwa dunƙule da ƙwallo a cikin ganga mai gauraya.
3. Ruwan zafin jiki da darajar pH na ruwa suna da dangantaka mai mahimmanci tare da rushewar hydroxyethyl cellulose, don haka ya kamata a biya kulawa ta musamman.
4. Kada a taɓa ƙara wani abu na alkaline zuwa gaurayawan kafin ruwan foda na hydroxyethyl cellulose ya dumama ta ruwa. Haɓaka ƙimar PH bayan dumama yana taimakawa ga rushewa.
5. Kamar yadda zai yiwu, ƙara magungunan antifungal da wuri-wuri.
6. Lokacin amfani da high-viscosity hydroxyethyl cellulose, maida hankali na uwa barasa kamata ba fiye da 2.5-3%, in ba haka ba uwar barasa zai yi wuya a rike. Hydroxyethyl cellulose da aka yi masa magani gabaɗaya baya da sauƙi don samar da lumps ko spheres, kuma ba zai haifar da colloid mai siffar zobe ba bayan ƙara ruwa.
Lokacin aikawa: Nuwamba-15-2022