N'ime nhazi agba, hydroxyethyl cellulose (HEC) bụ ihe na-eme ka ọ bụrụ ihe na-eme ka ọ dịkwuo mma na rheology modifier nke nwere ike melite nkwụsi ike nchekwa, nhazi na ihe nrụpụta nke agba. Iji tinye hydroxyethyl cellulose na agba ma hụ na ọ na-arụ ọrụ nke ọma, ọ dị mkpa ịgbaso usoro ụfọdụ na nlezianya anya. Usoro a kapịrị ọnụ bụ nke a:
1. Njirimara nke hydroxyethyl cellulose
Hydroxyethyl cellulose bụ polymer na-abụghị ionic mmiri soluble na magburu onwe ndim, film-akpụ, mmiri-ejigide, nkwusioru na emulsifying Njirimara. A na-ejikarị ya eme ihe na agba, nrapado, ceramik, ink na ngwaahịa ndị ọzọ. A na-enweta ya site na iji dochie akụkụ nke hydroxyl dị iche iche na cellulose molecular chain na hydroxyethyl otu, ya mere o nwere ezigbo mmiri solubility.
Isi ọrụ nke HEC na agba bụ:
Mmetụta dị arọ: Mee ka viscosity nke agba ahụ dịkwuo elu, gbochie agba ahụ ka ọ ghara ịdaba, ma mee ka ọ nwee ihe nrụpụta magburu onwe ya.
Mmetụta nkwusioru: Ọ nwere ike gbasasịa ma kwụsie ike irighiri ihe dị ka pigmenti na fillers iji gbochie ha idozi.
Mmetụta njide mmiri: Mee ka njigide mmiri nke ihe nkiri mkpuchi ahụ dịkwuo mma, gbasaa oge na-emeghe, ma melite mmetụta wetting nke agba.
Njikwa Rheology: gbanwee mmiri na ọkwa nke mkpuchi, ma melite nsogbu akara ahịhịa n'oge a na-ewu ụlọ.
2. Mgbakwunye nzọụkwụ nke hydroxyethyl cellulose
Nzọụkwụ tupu mgbasa Na arụ ọrụ n'ezie, hydroxyethyl cellulose kwesịrị ka agbasasịa ma gbazee site na usoro tupu mgbasa. Iji hụ na cellulose nwere ike ịrụ ọrụ ya n'ụzọ zuru ezu, a na-atụkarị aro ka igbari ya na mmiri mbụ, kama ịtinye ya ozugbo na mkpuchi. Usoro ndị a kapịrị ọnụ bụ ndị a:
Họrọ ihe mgbaze kwesịrị ekwesị: a na-ejikarị mmiri deionized eme ihe dị ka ihe mgbaze. Ọ bụrụ na e nwere ihe ndị ọzọ na-emepụta ihe na-emepụta ihe na usoro mkpuchi, ọ dị mkpa ka a gbanwee ọnọdụ nkwụsị dị ka njirimara nke ihe mgbaze si dị.
Jiri nwayọọ fesa hydroxyethyl cellulose: Jiri nwayọọ na ọbụna fesaa hydroxyethyl cellulose ntụ ntụ mgbe ị na-akpali mmiri iji gbochie agglomeration. Ọsọ na-akpali akpali kwesịrị ịdị ngwa iji zere ibelata ọnụego mgbasa nke cellulose ma ọ bụ na-akpụ “colloids” n'ihi ike ịkwa akwa.
Mgbasa na-eguzo: Mgbe fesachara hydroxyethyl cellulose, ọ dị mkpa ka ahapụ ya ka ọ guzoro ruo oge (na-abụkarị nkeji 30 ruo ọtụtụ awa) iji hụ na cellulose fụrụ akpụ kpamkpam wee gbazee na mmiri. Oge mgbasa na-adabere n'ụdị cellulose, ihe mgbaze na ọnọdụ mkpali.
Gbanwee okpomọkụ mgbasa: Ịbawanye okpomọkụ na-enyere aka mee ka usoro mgbasa nke hydroxyethyl cellulose dịkwuo ngwa. Ọ na-emekarị na-atụ aro ka ịchịkwa ngwọta okpomọkụ n'etiti 20 ℃-40 ℃. Oke okpomoku dị elu nwere ike ibute mmebi cellulose ma ọ bụ mmebi ihe ngwọta.
Ịmezi uru pH nke ihe ngwọta Solubility nke hydroxyethyl cellulose nwere njikọ chiri anya na pH uru nke ngwọta. Ọ na-agbaze nke ọma n'okpuru ọnọdụ nnọpụiche ma ọ bụ ntakịrị alkaline, yana uru pH n'etiti 6-8. N'oge usoro mgbasa, pH uru nwere ike gbanwee site na ịgbakwunye amonia ma ọ bụ ihe ndị ọzọ alkaline dị mkpa.
Ịgbakwunye hydroxyethyl cellulose ngwọta na usoro mkpuchi mgbe mgbasa, gbakwunye ngwọta na mkpuchi. N'oge usoro mgbakwunye ahụ, a ga-agbakwunye ya nwayọọ nwayọọ ma na-akpali akpali iji hụ na ngwakọta zuru oke na matrix mkpuchi. N'oge usoro ngwakọta, ọ dị mkpa ịhọrọ ọsọ na-akpali akpali kwesịrị ekwesị dị ka usoro dị iche iche si dị iche iche iji gbochie usoro ahụ site na ụfụfụ ma ọ bụ mmebi cellulose n'ihi oke ike ịkwa akwa.
Ndozi viscosity Mgbe agbakwunyere hydroxyethyl cellulose, viscosity nke mkpuchi nwere ike ịchịkwa site n'ịgbanwe ego agbakwunyere. N'ozuzu, ọnụ ọgụgụ nke hydroxyethyl cellulose a na-eji dị n'etiti 0.3% -1.0% (n'ihe metụtara mkpokọta mkpuchi nke mkpuchi), na ego a kapịrị ọnụ agbakwunyere kwesịrị imezi ya na nnwale dị ka usoro nhazi nke mkpuchi ahụ si dị. Ọnụ ọgụgụ dị elu nke mgbakwunye nwere ike ime ka mkpuchi ahụ nwee nnukwu viscosity na mmiri na-adịghị mma, na-emetụta arụmọrụ ụlọ; ebe mgbakwunye na-ezughị ezu nwere ike ọ gaghị enwe ike ịrụ ọrụ nke nkwusioru na nkwusioru.
Na-eduzi ule nhazi ọkwa na nchekwa nchekwa Mgbe agbakwunyere hydroxyethyl cellulose ma na-edozi usoro mkpuchi ahụ, a ghaghị ịnwale ọrụ mmepụta ihe mkpuchi, gụnyere nhazi ọkwa, sag, brush mark akara, wdg N'otu oge ahụ, a na-achọkwa ule nkwụsi ike mkpuchi mkpuchi. lelee sedimentation nke mkpuchi mgbe i guzoro ruo oge ụfọdụ, mgbanwe viscosity, wdg, iji nyochaa nkwụsi ike nke hydroxyethyl cellulose.
3. Akpachara anya
Na-egbochi agglomeration: N'oge usoro mgbasa, hydroxyethyl cellulose dị mfe ịmịnye mmiri na zaa, ya mere ọ dị mkpa ka a fesa ya n'ime mmiri nwayọọ nwayọọ ma hụ na mkpali zuru ezu iji gbochie ịmepụta lumps. Nke a bụ njikọ dị mkpa na ọrụ ahụ, ma ọ bụghị ya, ọ nwere ike imetụta ọnụego mgbasa na ịdị n'otu.
Zenarị ike ịkwa akwa: Mgbe ị na-agbakwunye cellulose, ọsọ na-akpali akpali ekwesịghị ịdị oke elu iji zere imebi eriri mkpụrụ ndụ cellulose n'ihi oke ike shiee, na-ebute mbelata na arụmọrụ ya. Tụkwasị na nke ahụ, na mmepụta mkpuchi na-esote, a ga-ezere iji ngwá ọrụ dị elu mee ihe dị ka o kwere mee.
Jikwaa okpomọkụ mgbasa: Mgbe ị na-agbaze hydroxyethyl cellulose, mmiri okpomọkụ ekwesịghị ịdị elu. A na-atụ aro ka ịchịkwa ya na 20 ℃-40 ℃. N'okpuru ọnọdụ okpomọkụ dị elu, cellulose nwere ike ịdalata, na-eme ka mbelata mmetụta ya na viscosity ya.
Nchekwa ngwọta: Hydroxyethyl cellulose ngwọta na-adịkarị mkpa ka a kwadebere ma jiri ya mee ihe ozugbo. Nchekwa ogologo oge ga-emetụta viscosity na nkwụsi ike ya. A na-atụkarị aro ka ịkwadebe ngwọta achọrọ n'ụbọchị mmepụta agba iji nọgide na-arụ ọrụ kachasị mma.
Ihe mgbakwunye nke hydroxyethyl cellulose na agba abụghị naanị usoro ngwakọta anụ ahụ dị mfe, mana ọ dịkwa mkpa ka ejikọta ya na ihe achọrọ n'ezie na usoro arụ ọrụ iji hụ na ejiri ya n'ụzọ zuru oke, nkwusioru na njigide mmiri. N'oge usoro mgbakwunye, ṅaa ntị na nzọụkwụ mbụ nke mgbasa, njikwa okpomọkụ nke mgbasa na uru pH, na ngwakọta zuru ezu mgbe mgbakwunye. Nkọwa ndị a ga-emetụta kpọmkwem àgwà na nkwụsi ike nke agba.
Oge nzipu: Sep-19-2024