Hydroxyethyl Cellulose (HEC) bụ ihe dị mkpa mmiri na-agbaze nonionic cellulose ether, nke a na-ejikarị eme ihe na mkpuchi ụlọ, karịsịa agba latex. Dị ka onye na-arụ ọrụ nke ọma thickener, colloid na-echebe, onye na-emechi anya na enyemaka na-emepụta ihe nkiri, ọ na-eme ka arụ ọrụ nke agba latex dịkwuo mma, na-eme ka ihe ndị na-ewu ụlọ nke agba na mmetụta anya nke ngwaahịa a rụchara.
1. Chemical Ọdịdị na Njirimara nke hydroxyethyl cellulose
Hydroxyethyl cellulose bụ cellulose ewepụtara site na iwebata otu hydroxyethyl n'ime molekul cellulose. Ọ bụ ngwakọta polymer na-agbaze mmiri. Ọdịdị kemịkal ya na-ekpebi oke mmiri solubility ya na ihe ndị na-eme ka ọ dị arọ. Mgbe etisasịwo na mmiri, ọ nwere ike na-etolite a ukwuu viscous ngwọta na ezi adhesion, film-akpụ na ndim mmetụta. Ihe ndị a na-arụ ọrụ dị mkpa na agba latex.
Hydroxyethyl cellulose na-abụkarị ọcha ma ọ bụ ntụ ntụ edo edo ma ọ bụ granules, nke a na-agbaze ngwa ngwa na mmiri oyi ma ọ bụ ọkụ iji mepụta ngwọta colloidal kwụsiri ike. Ngwọta ya nwere nkwụsi ike dị elu ma nwee ike iguzogide acid, alkali, redox na mmebi microbial nke ọma. Na mgbakwunye, n'ihi ọdịdị nke hydroxyethyl cellulose na-abụghị nke ionic, ọ naghị emeghachi omume na ihe ndị ọzọ dị na agba latex dị ka pigmenti, fillers ma ọ bụ ihe mgbakwunye, n'ihi ya, ọ nwere nkwekọrịta sara mbara na nhazi agba latex.
2. Usoro ọrụ nke hydroxyethyl cellulose na agba latex
Na agba latex, ọrụ nke hydroxyethyl cellulose na-egosipụta nke ọma na njupụta, njigide mmiri, nkwụsi ike na-abawanye na arụmọrụ ka mma:
Mmetụta siri ike: Hydroxyethyl cellulose, dị ka onye na-arụ ọrụ nke ọma, nwere ike ịbawanye viscosity nke agba latex ma mee ka thixotropy dịkwuo elu. Nke a abụghị naanị na-egbochi agba ahụ nke ọma n'oge nchekwa na ngwa ngwa, kamakwa na-eme ka agba ahụ dịkwuo ọbụna mgbe a na-atụgharị ma ọ bụ na-ehichapụ ya. Mmetụta dị mma nke ọma na-enyere aka ịchịkwa rheology nke agba latex, na-eme ka obi dị mma mgbe ị na-etinye ya, na-eme ka mkpuchi ihe nkiri dịkwuo mma.
Njide mmiri: Hydroxyethyl cellulose nwere ezigbo njide mmiri. N'oge usoro ihicha nke agba latex, ọ nwere ike igbochi mmiri ịpụ ngwa ngwa, si otú ahụ gbasaa oge oghere mmiri nke agba na-eme ka ọ dị mma. Tụkwasị na nke ahụ, njide mmiri dị mma nwekwara ike ibelata nkwụsị nke ihe nkiri mkpuchi mgbe ọ nwụsịrị, si otú ahụ na-eme ka ọdịdị nke ihe mkpuchi ahụ dịkwuo mma.
Nkwụsi ike: Hydroxyethyl cellulose, dị ka colloid na-echebe, nwere ike igbochi pigmenti na ndị na-ejuputa n'ụzọ dị irè ka ha dozie na agba latex. Ọ nwere ike ịmepụta usoro colloidal kwụsiri ike site na ngwọta viscous ya iji kesaa akụkụ ọ bụla nke ọma ma hụ na nkwụsi ike nke agba. N'otu oge ahụ, hydroxyethyl cellulose nwekwara ike melite nkwụsi ike nke emulsion ahụ ma zere delamination na agglomeration nke latex usoro n'oge nchekwa.
Nrụpụta ihe: N'oge usoro ihe owuwu, mmetụta na-egbuke egbuke na mmanye nke hydroxyethyl cellulose na-eme ka agba latex nwee ihe mkpuchi dị mma na nhazi ọkwa, nke nwere ike belata nrịbama nke ọma ma melite ire ụtọ nke ihe nkiri mkpuchi. Tụkwasị na nke ahụ, n'ihi na hydroxyethyl cellulose nwere ike imeziwanye thixotropy nke agba, agba latex dị mfe ịrụ ọrụ n'oge a na-ese ihe, na-enwe mmetụta dị mma na-enweghị mmiri mmiri, ọ dịkwa mma maka usoro ihe owuwu dị iche iche, dị ka brushing, mkpuchi mkpuchi na spraying. .
3. Specific ngwa mmetụta nke hydroxyethyl cellulose na latex agba
Meziwanye nkwụsi ike nke agba: Ịtinye ego hydroxyethyl cellulose kwesịrị ekwesị na usoro agba latex nwere ike ịkwalite njirimara mgbochi nke agba ahụ ma zere itinye pigmenti na ihe ndozi. Mgbasa nke hydroxyethyl cellulose na mkpuchi nwere ike idowe otu usoro mkpuchi ma gbasaa oge nchekwa nke ngwaahịa ahụ.
Meziwanye ikike rheological nke mkpuchi: Njirimara rheological nke agba latex dị oke mkpa maka ịdị mma ụlọ. Hydroxyethyl cellulose nwere ike iji thixotropy pụrụ iche na-eme ka agba na-agba ọsọ ngwa ngwa n'okpuru ike dị elu (dị ka mgbe eserese), ma nọgide na-enwe viscosity dị elu n'okpuru ike dị ala (dị ka mgbe ọ na-eguzo), na-egbochi Sag. Njirimara a na-eme ka agba latex nwee mmetụta ka mma na-ewu na mkpuchi, na-ebelata nkwụsị na ntụgharị.
Meziwanye mmetụta anya na ihe anụ ahụ nke ihe nkiri mkpuchi: Hydroxyethyl cellulose na-arụ ọrụ dị mkpa na usoro nhazi ihe nkiri. Ọ bụghị naanị na ọ ga-eme ka ire ụtọ nke ihe nkiri agba dị mma, kamakwa ọ na-eme ka ihe mgbochi na-eyi na mmiri na-eguzogide ihe nkiri, na-agbatị ndụ ọrụ nke ihe nkiri agba. Tụkwasị na nke ahụ, n'ihi njide mmiri dị mma, mkpuchi ahụ na-akpọnwụ nke ọma, na-enyere aka izere nsogbu ndị dị ka wrinkles, pinholes na mgbawa, na-eme ka elu nke mkpuchi ahụ dị nro.
Ịrụ ọrụ gburugburu ebe obibi emelitere: Hydroxyethyl cellulose bụ ihe sitere na cellulose eke, nwere ezigbo biodegradability, ọ gaghị emetọkwa gburugburu ebe obibi. E jiri ya tụnyere omenala sịntetik thickeners, ọ bụ ihe na gburugburu ebe obibi enyi na enyi na-ezute chọrọ nke oge a akwụkwọ ndụ akwụkwọ ndụ ihe ụlọ. Tụkwasị na nke ahụ, ọ dịghị ihe ndị na-emepụta ihe na-agbanwe agbanwe (VOC), ya mere iji hydroxyethyl cellulose na agba latex na-enyere aka belata ikuku VOC ma melite ogo ikuku nke gburugburu ebe obibi.
Dị ka ihe mgbakwunye dị mkpa na agba latex, hydroxyethyl cellulose nwere ike imeziwanye arụmọrụ ihe owuwu na mmetụta mkpuchi ikpeazụ nke agba latex site na nkwụsi ike ya dị mma, njide mmiri, nkwụsi ike na imepụta ihe nkiri. N'otu oge ahụ, n'ihi nchebe gburugburu ebe obibi na àgwà VOC dị ala, hydroxyethyl cellulose na-ezute akwụkwọ ndụ akwụkwọ ndụ na gburugburu ebe obibi nke ụlọ ọrụ mkpuchi nke oge a. Site na ọganihu teknụzụ na-aga n'ihu, atụmanya ngwa nke hydroxyethyl cellulose na agba latex ga-aba ụba karị, na-enye ngwọta dị mma maka mmepe mmepe nke ụlọ ọrụ mkpuchi ụlọ.
Oge nzipu: Sep-20-2024