Nkọwa:
N'ime afọ ndị na-adịbeghị anya, mkpuchi mmiri na-enweta nlebara anya zuru oke n'ihi ịdị mma gburugburu ebe obibi na ihe dị ala na-agbanwe agbanwe (VOC). Hydroxyethylcellulose (HEC) bụ polymer a na-eji mmiri soluble eme ihe n'ọtụtụ ebe na usoro ndị a, na-eje ozi dị ka thickener na-abawanye viscosity na njikwa rheology.
ewebata:
1.1 ndabere:
Ihe mkpuchi mmiri na-eme ka mmiri bụrụ ihe mgbakwunye gburugburu ebe obibi maka mkpuchi ihe mgbaze ọdịnala, na-edozi nsogbu ndị metụtara ikuku ihe ọkụkụ na-agbanwe agbanwe na mmetụta gburugburu ebe obibi. Hydroxyethylcellulose (HEC) bụ ihe na-emepụta cellulose bụ isi ihe na-emepụta ihe mkpuchi mmiri ma na-enye njikwa rheology na nkwụsi ike.
1.2 ebumnobi:
Isiokwu a na-achọ ịkọwapụta njirimara solubility nke HEC na mkpuchi mmiri na-amụba mmetụta nke ihe dị iche iche na viscosity ya. Ịghọta akụkụ ndị a dị oke mkpa iji kwalite usoro mkpuchi na imezu ọrụ achọrọ.
Hydroxyethylcellulose (HEC):
2.1 Nhazi na arụmọrụ:
HEC bụ ihe nrụpụta cellulose nwetara site na mmeghachi omume etherification nke cellulose na ethylene oxide. Ntinye nke hydroxyethyl dị iche iche n'ime ọkpụkpụ azụ cellulose na-enye aka na mmiri mmiri ya ma mee ka ọ bụrụ polymer bara uru na usoro mmiri. A ga-atụle usoro ihe omimi na ihe onwunwe nke HEC n'ụzọ zuru ezu.
Solubility nke HEC na mmiri:
3.1 Ihe na-emetụta solubility:
Solubility nke HEC na mmiri na-emetụta ọtụtụ ihe, gụnyere okpomọkụ, pH, na itinye uche. A ga-atụle ihe ndị a na mmetụta ha na HEC solubility, na-enye nghọta banyere ọnọdụ ndị na-akwado mgbasa HEC.
3.2 Oke solubility:
Ịghọta oke oke solubility nke elu na nke ala nke HEC na mmiri dị oke mkpa iji mepụta mkpuchi na arụmọrụ kachasị mma. Nkebi a ga-abanye n'ime oke ịta ahụhụ nke HEC na-egosipụta oke solubility yana nsonaazụ nke ịgafe oke ndị a.
Melite viscosity na HEC:
4.1 Ọrụ HEC na viscosity:
A na-eji HEC eme ihe dị ka onye na-ekpuchi mmiri na mkpuchi mmiri iji nyere aka mee ka viscosity dịkwuo mma ma melite àgwà rheological. A ga-enyocha usoro nke HEC na-enweta njikwa viscosity, na-ekwusi ike na mmekọrịta ya na ụmụ irighiri mmiri na ihe ndị ọzọ dị na nhazi mkpuchi.
4.2 Mmetụta nke mgbanwe usoro na viscosity:
Ụdị nhazi dị iche iche, gụnyere itinye uche HEC, okpomọkụ, na ọnụ ọgụgụ shear, nwere ike imetụta viscosity nke mkpuchi mmiri. Akụkụ a ga-enyocha mmetụta nke mgbanwe ndị a na viscosity nke mkpuchi nwere HEC iji nye nghọta bara uru maka ndị na-emepụta ihe.
Ngwa na atụmanya n'ọdịnihu:
5.1 Ngwa ụlọ ọrụ:
A na-eji HEC eme ihe n'ọtụtụ ebe na ngwa ụlọ ọrụ dị iche iche dị ka agba, adhesives na sealants. Akụkụ a ga-egosipụta kpọmkwem onyinye HEC na mkpuchi mmiri na ngwa ndị a ma kwurịta uru ya karịa ihe ndị ọzọ.
5.2 Ntuziaka nyocha n'ọdịnihu:
Ka ọchịchọ maka mkpuchi mkpuchi na-adịgide adịgide na nke dị elu na-aga n'ihu, a ga-enyocha ntụziaka nyocha n'ọdịnihu n'ọhịa nke usoro HEC dabeere. Nke a nwere ike ịgụnye ihe ọhụrụ na mgbanwe HEC, usoro mmepụta akwụkwọ ọhụrụ, na ụzọ njirimara dị elu.
na ngwụcha:
N'ịchịkọta isi ihe nchoputa, ngalaba a ga-eme ka ọ dị mkpa nke solubility na njikwa viscosity na mkpuchi mmiri na-eji HEC. Isiokwu a ga-emechi na ihe bara uru maka ndị na-emepụta ihe na ndụmọdụ maka nyocha ọzọ iji meziwanye nghọta nke HEC na usoro mmiri.
Oge nzipu: Dec-05-2023