Agba Latex (nke a makwaara dị ka agba mmiri) bụ ụdị agba nwere mmiri dị ka ihe mgbaze, nke a na-ejikarị eme ihe maka ịchọ mma na nchebe nke mgbidi, elu ụlọ na ihe ndị ọzọ. Usoro nke agba latex na-enwekarị emulsion polymer, pigmenti, filler, additives na ihe ndị ọzọ. N'etiti ha,hydroxyethyl cellulose (HEC)bụ ihe dị mkpa thickener na ọtụtụ ebe na latex agba. HEC nwere ike ọ bụghị naanị ịkwalite viscosity na rheology nke agba, kamakwa imeziwanye arụmọrụ nke ihe nkiri agba.
1. Njiri mara nke HEC
HEC bụ ngwakọta mmiri na-agbaze mmiri nke agbanwere site na cellulose nwere ezigbo nkwusioru, nkwusioru na imepụta ihe nkiri. Agbụ molekụla ya nwere otu hydroxyethyl, nke na-enyere ya aka igbari na mmiri wee mepụta ihe ngwọta dị elu nke viscosity. HEC nwere hydrophilicity siri ike, nke na-enyere ya aka ịrụ ọrụ n'ịkwụsị nkwụsịtụ, na-edozi rheology na imeziwanye arụmọrụ ihe nkiri na agba latex.
2. Mmekọrịta n'etiti HEC na emulsion polymer
Akụkụ bụ isi nke agba latex bụ polymer emulsion (dị ka acrylic acid ma ọ bụ ethylene-vinyl acetate copolymer emulsion), nke bụ isi ọkpụkpụ nke ihe nkiri agba. Mmekọrịta dị n'etiti AnxinCel®HEC na emulsion polymer na-apụtakarị n'akụkụ ndị a:
Nkwụsi ike ka mma: HEC, dị ka onye na-agba agba, nwere ike ịbawanye viscosity nke agba latex ma nyere aka mee ka ihe ndị emulsion dị ike. Karịsịa na emulsions polymer dị ala, mgbakwunye nke HEC nwere ike ibelata sedimentation nke emulsion ahụ ma melite nkwụsi ike nchekwa nke agba.
Usoro Rheological: HEC nwere ike gbanwee njirimara rheological nke agba latex, ka o wee nwee arụmọrụ mkpuchi ka mma n'oge a na-ewu ụlọ. Dịka ọmụmaatụ, n'oge eserese, HEC nwere ike imeziwanye ihe na-amị amị nke agba ma zere ịkwanye ma ọ bụ sagging nke mkpuchi. Tụkwasị na nke ahụ, HEC nwekwara ike ịchịkwa mgbake nke agba ma mee ka otu ihe nkiri ahụ dị n'otu.
Nkwalite arụmọrụ mkpuchi: Mgbakwunye nke HEC nwere ike imezi mgbanwe mgbanwe, glossiness na nkwụsi ike nke mkpuchi. Ọdịdị molekụla nke HEC nwere ike imekọrịta ihe na emulsion polymer iji mee ka usoro ihe nkiri ahụ dịkwuo elu, na-eme ka ọ dịkwuo njọ ma si otú a na-eme ka ọ dịkwuo ogologo oge.
3. Mmekọrịta n'etiti HEC na pigmenti
Pigments na agba latex na-agụnyekarị pigmenti inorganic (dị ka titanium dioxide, mica ntụ ntụ, wdg) na organic pigmenti. Mmekọrịta dị n'etiti HEC na pigmenti na-egosipụtakarị na akụkụ ndị a:
Mgbasa pigmenti: Mmetụta na-agbapụta nke HEC na-abawanye viscosity nke agba latex, nke nwere ike gbasasịa ihe ndị dị na pigmenti ma zere nchịkọta pigmenti ma ọ bụ mmiri ozuzo. Karịsịa maka ụfọdụ ihe dị mma nke pigmenti, ihe owuwu polymer nke HEC nwere ike kechie n'elu pigmenti iji gbochie nsị nke pigmenti ahụ, si otú ahụ na-eme ka mgbasa nke pigmenti na ịdị n'otu nke agba.
Ike ijikọ n'etiti pigmenti na ihe nkiri mkpuchi:HECụmụ irighiri ihe nwere ike mepụta adsorption anụ ahụ ma ọ bụ ihe kemịkal na elu nke pigmenti, mee ka ike dị n'etiti pigmenti na ihe nkiri mkpuchi, ma zere ihe omume nke ịwụfu ma ọ bụ na-ada n'elu ihe nkiri mkpuchi. Karịsịa na agba latex na-arụ ọrụ dị elu, HEC nwere ike imeziwanye ihu igwe ihu igwe na nguzogide UV nke pigmenti ma gbasaa ndụ ọrụ mkpuchi.
4. Mmekọrịta n'etiti HEC na fillers
A na-agbakwunye ụfọdụ ihe nkpuchi (dị ka calcium carbonate, talcum powder, silicate minerals, wdg) na-agbakwunye na agba latex iji meziwanye rheology nke agba ahụ, meziwanye ike nzuzo nke ihe nkiri mkpuchi ma mee ka ọnụ ahịa dị mma nke agba. Mmekọrịta dị n'etiti HEC na fillers na-egosipụta n'akụkụ ndị a:
Nkwusioru nke ihe nchacha: HEC nwere ike idowe ihe ndị a gbakwunyere na agba latex n'ụdị mgbasasị edo edo site na mmetụta ya na-abawanye ụba, na-egbochi ndị na-ejuputa ya idozi. N'ihi na fillers na ibu urughuru nha, ndim mmetụta nke HEC dị mkpa karịsịa, nke nwere ike n'ụzọ dị irè ịnọgide na-enwe nkwụsi ike nke agba.
Gloss na aka nke mkpuchi: Mgbakwunye nke ihe nchacha na-emetụtakarị gloss na aka nke mkpuchi. AnxinCel®HEC nwere ike imeziwanye arụmọrụ nke mkpuchi ahụ site n'ịgbanwe nkesa na nhazi nke ndị na-ejuputa. Dịka ọmụmaatụ, mgbasa ozi otu nke ihe ndị na-emepụta ihe na-enyere aka belata ihe siri ike nke mkpuchi mkpuchi ma melite larịị na gloss nke ihe nkiri agba.
5. Mmekọrịta n'etiti HEC na ihe mgbakwunye ndị ọzọ
Usoro agba latex na-agụnyekwa ụfọdụ ihe mgbakwunye ndị ọzọ, dị ka defoamers, preservatives, wetting agents, wdg. Ihe mgbakwunye ndị a nwere ike imekọrịta na HEC ma na-eme ka arụmọrụ nke agba ahụ dịkwuo mma:
Mmekọrịta dị n'etiti ndị defoamers na HEC: Ọrụ nke ndị na-emepụta ihe bụ iji belata ụfụfụ ma ọ bụ ụfụfụ na agba, na àgwà viscosity dị elu nke HEC nwere ike imetụta mmetụta nke ndị defoamers. HEC dị ukwuu nwere ike ime ka o siere onye defoamer ike iwepụ ụfụfụ kpamkpam, si otú ahụ na-emetụta ọdịdị elu nke agba. Ya mere, ọnụ ọgụgụ nke HEC agbakwunyere kwesịrị ịhazi ya na ọnụọgụ defoamer iji nweta mmetụta kacha mma.
Mmekọrịta dị n'etiti ihe nchekwa na HEC: Ọrụ nke ihe nchekwa bụ igbochi uto nke microorganisms na agba na ịgbatị oge nchekwa nke agba. Dị ka polymer sitere n'okike, usoro ihe omimi nke HEC nwere ike imekọrịta ihe na ụfọdụ ihe nchekwa, na-emetụta mmetụta mgbochi corrosion ya. Ya mere, ọ dị mkpa ịhọrọ ihe nchekwa nke dabara na HEC.
Ọrụ nkeHECna latex agba na-abụghị nanị ndim, ma mmekọrịta ya na polymer emulsions, pigments, fillers na ndị ọzọ na mgbakwunye na-ekpebi arụmọrụ nke latex agba. AnxinCel®HEC nwere ike melite rheological Njirimara nke latex agba, melite dispersibility nke pigments na fillers, na welie n'ibu Njirimara na anwụ ngwa ngwa nke mkpuchi. Tụkwasị na nke ahụ, mmetụta synergistic nke HEC na ihe mgbakwunye ndị ọzọ nwekwara mmetụta dị mkpa na nkwụsi ike nke nchekwa, ịrụ ọrụ ihe owuwu na mkpuchi mkpuchi nke agba latex. Ya mere, n'ichepụta ụdị agba agba latex, nhọrọ ezi uche dị na ya nke ụdị HEC na ego mgbakwunye na nguzozi nke mmekọrịta ya na ihe ndị ọzọ bụ isi ihe na-eme ka arụmọrụ nke agba latex dịkwuo mma.
Oge nzipu: Dec-28-2024