Na ụlọ ọrụ agba, nkwụsi ike na rheology nke agba agba dị oké mkpa. Otú ọ dị, n'oge nchekwa na ojiji, ụcha agba na-enwekarị nsogbu dị ka ịgbatị na agglomeration, nke na-emetụta mmetụta ihe owuwu na mkpuchi mkpuchi.Hydroxyethyl cellulose (HEC), dị ka a nkịtị mmiri-soluble polymer thickener, arụ ọrụ dị mkpa na agba formulations. Ọ nwere ike imeziwanye njirimara rheological nke tapawa agba, gbochie agglomeration, ma melite nkwụsi ike nchekwa.
1. Ihe mere ndim na agglomeration nke agba agba mado
Mkpokọta na agglomeration nke tapawa agba agba na-emetụtakarị ihe ndị a:
Mgbasa pigmenti na-adịghị akwụsi ike: irighiri ụcha pigmenti dị na tapawa agba nwere ike ịfesa ma dozie n'oge nchekwa, na-ebute itinye uche na mpaghara oke na agglomeration.
Evaporation nke mmiri na usoro: N'oge nchekwa, evaporation nke akụkụ nke mmiri ga-eme ka viscosity nke agba mado na-abawanye, na ọbụna na-etolite akọrọ ihe n'elu.
Enweghi ike n'etiti ihe mgbakwunye: ụfọdụ ndị na-agba agba, ndị na-ekesa ma ọ bụ ihe mgbakwunye ndị ọzọ nwere ike imeghachi omume n'etiti ibe ha, na-emetụta njirimara rheological nke tapawa agba, na-ebute mmụba viscosity na-adịghị mma ma ọ bụ nhazi flocculent.
Mmetụta nke ike shiee: Mwegharị igwe ma ọ bụ ịgbapụta ogologo oge nwere ike ime ka mbibi nke usoro ihe nrụnye polymer dị na sistemụ ahụ, belata mmịfe nke tapawa agba, ma mee ka ọ dịkwuo viscous ma ọ bụ agglomerated.
2. Usoro ọrụ nke hydroxyethyl cellulose
Hydroxyethyl cellulose (HEC) bụ ihe na-abụghị ionic cellulose ewepụtara na ezi ndim, rheological ukpụhọde ikike na dispersion kwụsie ike. Isi usoro ọrụ ya na tapawa agba agba gụnyere:
Mgbanwe nke ukwuu na rheological: HEC nwere ike ijikọta ya na ụmụ irighiri mmiri site na njikọ hydrogen iji mepụta oyi akwa hydration kwụsiri ike, mee ka viscosity nke sistem ahụ dịkwuo mma, gbochie ụmụ irighiri ụcha pigmenti ka ọ ghara imebi na idozi, ma hụ na tapawa agba na-edobe ezigbo mmiri n'oge guzoro ma ọ bụ ihe owuwu.
Stable dispersion usoro: HEC nwere ezigbo elu ọrụ, nwere ike kootu pigmenti ahụ, welie ha dispersibility na mmiri na-adọ, gbochie agglomeration n'etiti ahụ, ma si otú belata flocculation na agglomeration.
Mgbochi mmiri na-egbochi mmiri: HEC nwere ike ịmepụta oyi akwa mkpuchi, mee ka ọnụ ọgụgụ mmiri na-ekupụ mmiri na-ebelata, gbochie agba agba ka ọ na-eto n'ihi mmiri na-efunahụ, ma gbasaa oge nchekwa.
Nguzogide Shear: HEC na-enye agba dị mma thixotropy, na-ebelata viscosity n'okpuru ike dị elu, na-eme ka owuwu rụọ ọrụ, ma nwee ike iweghachi viscosity ngwa ngwa n'okpuru ike dị ala, na-eme ka ọrụ mgbochi nke agba ahụ dịkwuo mma.
3. Uru nke hydroxyethyl cellulose na agba agba mado
Ịgbakwunye hydroxyethyl cellulose na sistemu agba agba nwere uru ndị a:
Ịkwalite nkwụsi ike nchekwa nke tapawa agba: HEC nwere ike igbochi pigmenti sedimentation na agglomeration nke ọma, na-ahụ na tapawa agba na-edobe otu mmiri mmiri mgbe nchekwa ogologo oge gasịrị.
Ịmalite ịrụ ọrụ ihe owuwu: HEC na-enye agba agba dị mma rheological Properties, na-eme ka ọ dị mfe ịhịa aka n'ahụ, tụgharịa ma ọ bụ ịgbasa n'oge a na-ewu ụlọ, na-eme ka nhazi ihe owuwu nke agba.
Ime ka mmiri na-eguzogide mmiri: HEC nwere ike ibelata mgbanwe viscosity kpatara site na evaporation mmiri, nke mere na agba agba nwere ike ịnọgide na-enwe nkwụsi ike dị mma n'okpuru ọnọdụ gburugburu ebe obibi dị iche iche.
Nkwekọrịta siri ike: HEC bụ onye na-abụghị ionic thickener, nke nwere ezigbo ndakọrịta na ọtụtụ ndị na-ekesa, ndị na-edozi mmiri na ihe mgbakwunye ndị ọzọ, na ọ gaghị eme ka ọ bụrụ ihe na-adịghị mma na usoro nhazi.
Nchekwa gburugburu ebe obibi na nchekwa: HEC sitere na cellulose eke, na-ezute ihe nchebe gburugburu ebe obibi, adịghị ahapụ ihe ndị na-emerụ ahụ, ma na-agbaso usoro mmepe nke ndụ ndụ na nchebe gburugburu ebe obibi nke mkpuchi mmiri.
4. Ojiji na aro nke hydroxyethyl cellulose
Iji rụọ ọrụ nke ọma nke HEC, ekwesịrị iburu n'uche isi ihe ndị a mgbe ị na-eji ya n'ụdị tapawa agba mkpuchi:
Ijikwa ezi uche nke ego mgbakwunye: Ọnụ ego HEC na-abụkarị n'etiti 0.2% -1.0%. Ọnụ ego a kapịrị ọnụ kwesịrị ka a gbanwee dịka mkpa nke usoro mkpuchi ahụ si dị ka ịzere viscosity dị ukwuu ma na-emetụta arụmọrụ ụlọ.
Usoro mgbasa ozi tupu: HEC kwesịrị ịgbasa ma gbazee n'ime mmiri mbụ, wee tinye ya na usoro nchacha agba mgbe ọ na-emepụta otu ngwọta edozi iji hụ na ọ na-arụ ọrụ nke ọma na mmetụta ya.
Jiri ya na mgbakwunye ndị ọzọ: Ọ nwere ike iji ezi uche kwekọọ na ndị na-ekesa, ndị na-ahụ maka wetting, wdg iji melite nkwụsi ike nke pigmenti na-ebuli ọrụ mkpuchi.
Zere mmetụta okpomọkụ dị elu: Solubility nke HEC na-emetụta oke okpomọkụ. A na-atụ aro ka igbari ya na okpomọkụ kwesịrị ekwesị (25-50 ℃) iji zere agglomeration ma ọ bụ ezughị oke mgbasa.
Hydroxyethyl cellulosenwere uru ngwa dị mkpa na agba agba mado usoro. Ọ nwere ike n'ụzọ dị irè dozie nsogbu nke agba tapawa ndim na agglomeration, na melite nchekwa kwụsie ike na-ewu arụmọrụ. Nkwụsi ike ya, ịgbasa nkwụsi ike na iguzogide evaporation nke mmiri na-eme ka ọ bụrụ ihe mgbakwunye dị mkpa maka agba ndị dabeere na mmiri. N'ime ngwa bara uru, ngbanwe ezi uche nke usoro onyunyo HEC na usoro mgbakwunye nwere ike ịbawanye uru ya ma melite ogo agba. Site na mmepe nke agba agba gburugburu ebe obibi na-adabere na mmiri, atụmanya ngwa nke HEC ga-aba ụba.
Oge nzipu: Eprel-09-2025