Ọdịdị dị mma nke ibipụta na-acha ọcha gluu bụ ngosipụta nke mpụga nke àgwà ya na àgwà ya, nke gụnyere ọdịdị ọdịdị, ịdị mma na mmiri nke na-ebipụta gluu na-acha ọcha. Ọdịdị nke gluing na-acha ọcha na-agbanwe nke ọma kwesịrị ịbụ mmiri mmiri edo edo, ọcha viscous ọkara tapawa, siri ike ma kwụ ọtọ, ezigbo mmiri mmiri, na elu na-egbuke egbuke. Otú ọ dị, adịghị mma ibipụta na-agbanwe na-acha ọcha gluu mgbe nwere layered solidification, ogbenye fluidity, flocculation na mmiri nkewa, oké viscosity, na mado-dị ka ahụ n'oge nchekwa, nke na-emetụta kpọmkwem àgwà ya, agba, mkpuchi ike, mmiri na-eguzogide, leveling, Opacity. gloss, mkpụrụ agba na ihe ndị ọzọ.
E nwere ọtụtụ ihe na-emetụta ọdịdị ọdịdị nke mbipụta na-acha ọcha gluu: akụrụngwa dị ka resin (nrapado) wetting na dispersing agent, thickener, filler na usoro ya na mmepụta usoro ga-emetụta ya.
Ihe kpatara na-emetụta ogo ọdịdị nke ibipụta mucilage na-acha ọcha
1. Griiz bụ ihe na-emepụta ihe nkiri nke na-ebipụta gluu na-acha ọcha. N'oge mmeghachi omume nke polymerization nke resin, okpomọkụ, oge, ọsọ mmeghachi omume, nchekwa ọkụ, ọsọ ọsọ na mgbakwunye nke ihe mgbakwunye ga-eme ka mmeghachi omume kemịkal ezughị ezu na ihe fọdụrụnụ Ọtụtụ monomers ga-eme ka nkwụsi ike na-adịghị mma na nke anụ ahụ, na resin ga-agbakọta na coalesce. , na-akpata delamination nke ibipụta na-agbanwe na-acha ọcha gluu, isi ísì, adịghị mma adhesion, netwọk igbochi na ndị ọzọ na-ejighị n'aka ihe. Ya mere, resin ga-enwerịrị ezigbo nkwụsi ike nke kemịkalụ, nkwụsi ike nchekwa, ịdị mma dị mma, mmachi siri ike, ịdị nro na njirimara ndị na-adịghị mma.
2. Na-ekpe ikpe site na sedimentation ọsọ (iwu Stokes)
V=218r2(P-P1)/η
Na usoro: V-ada ọsọ ọsọ, ㎝/s; r-otu akụkụ radius, ㎝;
P-pigmenti njupụta urughuru, g/cm3; Njupụta mmiri mmiri P1, g/cm3
Oke urughuru η-mmiri, 0.1pa.s
Ọsọ ọsọ nke sedimentation nke ndochi nwere ọtụtụ mmekọrịta na-egweri fineness, ya bụ, ukwuu na-egweri mma, sedimentation ngwa ngwa nke ndochi ga-amụba. Mbipụta gluu na-acha ọcha na-agbanwe agbanwe ga-ekewa mmiri na flocculate n'ígwé n'ime obere oge. Ya mere, n'ozuzu fineness bụ n'ime 15-20μm. Agbanyeghị, ụmụ irighiri ụcha pigmenti kacha mma na-egbu oge idozi ma anaghị egbochi idozi. Mbipụta gluu na-acha ọcha na-agbanwe bụ mmiri viscous nke nwere mmiri na-abụghị Newtonian, a ga-ejikwa viscometer na-atụgharị tụọ viscosity ya.
3. Mmetụta nke ibipụta ihe mgbakwunye na-acha ọcha gluu na-agbanwe
Onye na-ahụ maka wetting na dispersing na-ebipụta mucilage ọcha na-agbanwe agbanwe nwere ike gbasasịa ihe dị iche iche. A na-ewebata netwọk rụrụ arụ n'ime ihe mejupụtara ya iji mee ka ihe ndị na-ejuputa ihe kwụsịtụrụ na-enweghị sedimentation, belata viscosity nke slurry nke ọma, ma gbochie ibipụta mucilage ọcha na-agbanwe agbanwe. na mmiri ozuzo layering; mgbakwunye nke ọkwa ọkwa na-ebelata njide ibe n'etiti agbụ macromolecular, na-ebelata esemokwu nke ihe ma belata viscosity. The thickener na-arụ ọrụ dị mkpa karị n'ịgbanwe ọdịdị ọdịdị nke ibipụta gluu na-acha ọcha na-agbanwe agbanwe.
4. Mmetụta nke ibipụta na-agbanwe na-acha ọcha gluu mmepụta usoro
Oke ọsọ nke agitator ga-eme ka resin na-agbaze site na nnukwu shiee, na mgbakwunye na-ezighi ezi nke ihe mgbakwunye dị ka ndị na-ekesa, ndị na-asọ asọ, na ndị na-ekpo ọkụ ga-edugakwa na demulsification nke gluu na-acha ọcha na-ebipụta akwụkwọ na nhazi nke gel. Jikwaa oge, okpomọkụ na ịdị mma ngwaahịa nke usoro mmepụta.
Ụzọ njikwa ogo ọdịdị ọdịdị nke ibipụta ihe nchara na-acha ọcha
1. Họrọ resin kwesịrị ekwesị maka nhazi usoro chọrọ
Resin bụ akụkụ kachasị mkpa nke usoro gluu na-acha ọcha na-ebipụta. Dị iche iche resins nwere dị iche iche urughuru size nkesa, chemical ion kwụsie ike, n'ibu kwụsie ike, mmiri na-mmanụ, mmanụ na-mmiri na hydrophilicity, nke nwere oké mmetụta na ọdịdị. Ya mere, mgbe ị na-ahọrọ resin, ọ dị mkpa iji tụlee n'ụzọ zuru ezu njirimara nke resin n'onwe ya, karịsịa ndakọrịta nke resin, ka ị na-ahazi nhọrọ nke fillers na mgbakwunye na usoro usoro.
2. Dakọtara nke ọma na onye na-ekesa na onye na-eme ka ọ dị larịị
Ndị na-ahụ maka ọkwa ọkwa na ndị na-ekesa ihe nke ndị nrụpụta dị iche iche mepụtara nwere ụkpụrụ HLB dị iche iche. N'ozuzu, ndị na-ekesa na ndị na-emepụta ihe (nke dabeere na mmiri) nwere ụkpụrụ HLB buru ibu ga-ebelata viscosity nke usoro ahụ karịa; na mmụba nke ụkpụrụ HLB, ụdị dị iche iche nke mgbasa ozi na nhazi ọkwa ga-ebelata viscosity nke usoro ma na-emetụta resin Ọzọkwa ibu. The hydrophilic dispersing na leveling gị n'ụlọnga ga-mma na nchekwa kwụsie ike nke ibipụta na-agbanwe na-acha ọcha gluu, na hydrophobic dispersing na leveling gị n'ụlọnga ga-mma na scrub nguzogide nke ibipụta na-agbanwe na-acha ọcha gluu mgbe ihe nkiri e guzobere. Ya mere, ngwakọta nke hydrophilic na hydrophobic dispersing na leveling agents nwere ike imeziwanye nchekwa nke na-ebipụta akwụkwọ na-acha ọcha gluu. Ọ bụrụ na agbakwunyere ihe na-agbasawanye na ọkwa ọkwa, a ga-eme ka hydrophilicity na fluidity ya dịkwuo mma, mana ọ ga-ebelata ngwa ngwa ịsacha ya na mmiri na-eguzogide mmiri ga-emebi. Ọ bụrụ na agbakwunyere obere mgbasa ozi na ọkwa ọkwa, ọ ga-emetụta ọdịdị ọdịdị ya ozugbo, yabụ n'ozuzu ya kwesịrị ịchịkwa n'etiti 3%-5%.
3. Ezi uche nhọrọ nke thickeners melite arụmọrụ nke na-ebipụta na-agbanwe na-acha ọcha gluu
Ka ọ dị ugbu a, ihe ndị a na-ejikarị na-ebi akwụkwọ na-acha ọcha gluu gụnyere: polyacrylic acid, cellulose ether, alkali-soluble acrylic, na ndị na-abụghị ionic associative polyurethane.
Cellulosic thickeners (tumadi gụnyere hydroxypropyl methyl cellulose, hydroxyethyl cellulose, na hydroxypropyl cellulose) nwere elu ndim arụmọrụ na ezi kwụsie ike, ma ogbenye larịị na mfe ime ka web akara na ihuenyo obibi , na nwere mmetụta ụfọdụ na gloss nke slurry. Polyurethane thickeners dị ọnụ karịa, a na-ejikarị ya ebipụta gluu na-acha ọcha. Polyacrylic acid thickeners nwere ezigbo ọkwa ọkwa, ọ dịghị mfe ịmepụta akara netwọk, adịghị emetụta gloss nke slurry, na-enwe ezigbo mmiri na-eguzogide mmiri na nkwụsi ike nke ndu, ma nwee ezigbo ndakọrịta, nke mere na njikọ molecular na-etolite n'etiti ụmụ irighiri ihe, na-akpata resin. -filler-resin Nleta a netwọk Ọdịdị, na-enye elu ọkara na elu shiee ọsọ, na-eme ka mbipụta na-agbanwe na-acha ọcha gluu nwere mma rheology, na-eme ka ọdịdị nke milky ọcha mmiri mmiri ọkara tapawa.
4. Jiri usoro mmepụta ziri ezi
Ekwesịrị iji mmiri gbanye thickener tupu ịgbakwunye. Ekwesịrị ibu ụzọ tinye resin ahụ, a ga-edobekwa onye na-eme ihe na-agba ọsọ na obere obere ọsọ iji zere demulsification resin nke oke ịkpachasị ahụ mere. N'oge usoro mmepụta, a ga-ahụ viscosity nke slurry n'oge ọ bụla, na-agba ọsọ na okpomọkụ nke slurry n'oge mmepụta kwesịrị ịchịkwa nke ọma. Na tupu ịgbanwe slurry, tinye ihe kwesịrị ekwesị nke surfactant iji chebe ụmụ irighiri resin si demulsification.
Oge nzipu: Mar-04-2023