ozi

Dị ka viscosity nke resin dabeere na mmiri dị nnọọ ala, ọ pụghị izute mkpa nchekwa na ịrụ ọrụ nke mkpuchi, n'ihi ya, ọ dị mkpa iji thickener kwesịrị ekwesị iji dozie viscosity nke mkpuchi mmiri na steeti ziri ezi.

E nwere ọtụtụ ụdị thickeners.Mgbe ị na-ahọrọ ndị na-emepụta ihe, na mgbakwunye na arụmọrụ ha siri ike na ịchịkwa rheology mkpuchi, ụfọdụ ihe ndị ọzọ kwesịrị ịtụle iji mee ka mkpuchi ahụ nwee arụmọrụ kachasị mma na-ewu ụlọ, ọdịdị ihe nkiri mkpuchi kachasị mma na ndụ ọrụ kachasị ogologo.

Nhọrọ nke ụdị thickener na-adabere na mkpa na ọnọdụ n'ezie nke nhazi ahụ.

Mgbe ị na-ahọrọ na iji thickeners, ndị a dị mkpa.

1. High molecular arọ HEC nwere a ukwuu n'ókè nke entanglement tụnyere ala molekul arọ na-egosiputa ukwuu ndim arụmọrụ n'oge nchekwa.Na mgbe ọnụ ọgụgụ nke shear na-abawanye, a na-ebibi ọnọdụ ikuku, ka ọnụ ọgụgụ dị ukwuu nke shear, na-ebelata mmetụta nke ịdị arọ molecular na viscosity.Nke a na ndim usoro nwere ihe ọ bụla na-eme na isi ihe, pigments na mgbakwunye na-eji, naanị mkpa ịhọrọ nri molekụla arọ nke cellulose na mezie ịta nke thickener nwere ike nweta ezi viscosity, ma si otú ọtụtụ-eji.

2.HEUR thickener bụ viscous aqueous ngwọta na diol ma ọ bụ diol ether dị ka co-ihe mgbaze, na siri ike ọdịnaya nke 20% ~ 40%.Ọrụ nke ihe mgbaze bụ igbochi adhesion, ma ọ bụghị na ihe ndị dị otú ahụ dị na gel steeti n'otu ntinye uche.N'otu oge ahụ, ọnụnọ nke ihe mgbaze nwere ike izere ngwaahịa ahụ site na oyi, ma ọ ga-ekpo ọkụ n'oge oyi tupu ejiri ya.

3. Ngwa ngwa siri ike, obere viscosity dị mfe ikpofu ma nwee ike ibufe ma chekwaa ya na nnukwu.Ya mere, ụfọdụ HEUR thickeners nwere dị iche iche siri ike ọdịnaya nke otu ngwaahịa ọkọnọ.Ọdịnaya ihe mgbaze nke obere viscosity thickeners dị elu, na viscosity etiti nke agba ga-adị ntakịrị ala mgbe ejiri ya mee ihe, nke enwere ike iwepụ site n'ibelata ihe mgbaze agbakwunyere n'ebe ndị ọzọ na nhazi ahụ.

4. N'okpuru ọnọdụ ngwakọta kwesịrị ekwesị, obere viscosity HEUR nwere ike ịgbakwunye ozugbo na agba latex.Mgbe ị na-eji ngwaahịa viscosity dị elu, ọ dị mkpa ka a na-agbaze ihe na-esi ísì ụtọ na ngwakọta mmiri na ihe mgbaze tupu agbakwunye ya.Ọ bụrụ na ị gbakwunye mmiri iji mee ka ọkpụkpụ ahụ na-agbaze ozugbo, ọ ga-ebelata ntinye nke ihe mgbaze mbụ na ngwaahịa ahụ, nke ga-eme ka adhesion dịkwuo elu ma mee ka viscosity dị elu.

5. Ịgbakwunye thickener na tankị ngwakọta kwesịrị ịdị nwayọọ na ngwa ngwa, ma tinye ya n'akụkụ mgbidi mgbidi.Ọsọ ịgbakwụnye ekwesịghị ịdị ngwa ngwa nke na onye na-ekpu mmiri na-anọ n'elu mmiri ahụ, ma ekwesịrị ịdọrọ ya n'ime mmiri mmiri wee gbadaa n'akụkụ ogwe na-akpali akpali, ma ọ bụghị ya, a gaghị agwakọta ya nke ọma ma ọ bụ na ọ ga-abụ nke siri ike. ma ọ bụ flocculated n'ihi nnukwu mkpokọta mpaghara.

6. HEUR thickener na-agbakwunyere na agba agwakọta tank mgbe ndị ọzọ mmiri mmiri components na tupu emulsion, nke mere iji hụ na kacha gloss.

7. HASE thickeners na-agbakwunyere ozugbo na agba n'ụdị emulsion na mmepụta nke emulsion paints na-enweghị tupu dilution ma ọ bụ tupu-neutralization.Enwere ike ịgbakwunye ya dị ka akụkụ ikpeazụ n'ime oge ngwakọta, na oge mgbasa nke pigmenti, ma ọ bụ dị ka akụkụ mbụ na ngwakọta.

8. Ebe ọ bụ na HASE bụ nnukwu emulsion acid, mgbe agbakwunyere, ọ bụrụ na e nwere alkali na emulsion agba, ọ ga-asọmpi maka alkali a.Ya mere, a chọrọ ka ịgbakwunye HASE thickener emulsion nwayọọ nwayọọ na nwayọọ nwayọọ, na-akpali nke ọma, ma ọ bụghị ya, ọ ga-eme ka pigmenti dispersion usoro ma ọ bụ emulsion na-ekekọta enweghị nkwụsi ike mpaghara, na nke ikpeazụ na-emeziwanye site neutralized elu otu.

9. Enwere ike ịgbakwunye Alkali tupu ma ọ bụ mgbe a na-agbakwunye ihe na-eme ka ọ dị arọ.The uru nke na-agbakwụnye tupu bụ iji hụ na ọ dịghị obodo akwusighi ike nke pigmenti dispersion ma ọ bụ emulsion ihe nkedo ga-mere site thickener grabbing alkali si n'elu nke pigmenti ma ọ bụ ihe nkedo.The uru nke na-agbakwụnye alkali e mesịa bụ na thickener ahụ na-ọma chụgara tupu ha fụrụ akpụ ma ọ bụ etisasịwo site alkali, na-egbochi obodo ndim ma ọ bụ agglomeration, dabere n'ụdị, ngwá na n'ichepụta usoro.Ụzọ kacha dịrị nchebe bụ iji mmiri buru ụzọ were mmiri gbanye thickener HASE wee wepụ ya na alkali tupu oge eruo.

10. HASE thickener na-amalite ịza na pH nke ihe dịka 6, na ịrụ ọrụ nke ọma na-abata n'ime egwuregwu zuru oke na pH nke 7 ruo 8. Ịgbanwe pH nke agba latex n'elu 8 nwere ike ime ka pH nke agba latex ghara ibelata n'okpuru 8. , si otú ahụ na-ahụ nkwụsi ike nke viscosity.