In ikpeazụ isiokwu, anyị webatara ntoputa nke dispersants, ụfọdụ usoro na ọrụ nke dispersants. N'ime akụkụ a, anyị ga-enyocha ụdị ndị na-achụsa ihe n'oge dị iche iche na akụkọ mmepe nke ndị na-agbasa.
Omenala dị ala arọ molekul wetting na dispersing gị n'ụlọnga
Nke mbụ gbasasịrị bụ triethanolamine nnu nke fatty acid, nke ewepụtara n'ahịa ihe dịka 100 afọ gara aga. Nke a dispersant bụ nnọọ oru oma na echekwa na n'ozuzu ulo oru agba ngwa. Ọ gaghị ekwe omume iji ya, na arụmọrụ mbụ ya na usoro mmanụ alkyd ọkara adịghị njọ.
N'afọ ndị 1940 ruo 1970, pigmenti ndị a na-eji na ụlọ ọrụ mkpuchi bụ ihe ndị na-emepụta ihe na ụfọdụ pigmenti organic ndị dị mfe ịgbasa. Ndị na-ekesa n'ime oge a bụ ihe ndị yiri surfactants, nke nwere otu mgbaka pigmenti n'otu nsọtụ yana akụkụ resin dakọtara na nsọtụ nke ọzọ. Ọtụtụ ụmụ irighiri ihe nwere naanị otu ebe mgbakwasị agba.
Site n'echiche nhazi, enwere ike kewaa ha ụzọ atọ:
(1) ihe mgbawa nke fatty acid, gụnyere fatty acid amides, fatty acid amide salts, na fatty acid polyethers. Dị ka ihe atụ, ndị gbanwetụrụ ọdụdụ asịd nwere blocks mepụtara BYK na 1920-1930, nke e ji nnu ogologo amine amine iji nweta Anti-Terra U. E nwekwara BYK's P104/104S na elu functional ọgwụgwụ òtù dabere na DA mgbakwunye mmeghachi omume. BESM® 9116 sitere na Shierli bụ onye na-ekesa nkesa na ọkọlọtọ ọkọlọtọ na ụlọ ọrụ putty. Ọ nwere ezigbo wettability, mgbochi-edozi Njirimara na nchekwa nkwụsi ike. Ọ nwekwara ike melite ihe mgbochi corrosion ma na-ejikarị eme ihe na mgbochi corrosion primers. BESM® 9104/9104S bụkwa a na-ahụkarị flocculation mgbasa nke nwere ọtụtụ anchoring otu. Ọ nwere ike ịmepụta usoro netwọk mgbe a gbasasịrị, nke na-enye aka na-achịkwa sedimentation pigmenti na agba na-ese n'elu mmiri. Ebe ọ bụ na akụrụngwa nke fatty acid na-ekesa anaghịzi adabere na akụrụngwa petrochemical, a na-emegharị ha.
(2) Organic phosphoric acid ester polymers. Ụdị ihe nkesa a nwere ikike ịgbachitere ụwa niile maka pigmenti inorganic. Ọmụmaatụ, BYK 110/180/111 na BESM® 9110/9108/9101 si Shierli bụ magburu onwe dispersants maka achụsa titanium dioxide na inorganic pigments, na pụtara ìhè mbelata viscosity, agba mmepe na nchekwa arụmọrụ. Na mgbakwunye, BYK 103 na BESM® 9103 sitere na Shierli na-egosi ọmarịcha mbelata viscosity uru yana nkwụsi ike nchekwa mgbe ị na-agbasasị matte slurries.
(3) Polyethers aliphatic na-abụghị ionic na alkylphenol polyoxyethylene ethers. Arọ molekụla nke ụdị dispersant a n'ozuzu na-erughị 2000 g / mol, ọ na-elekwasị anya karịa na mgbasa nke inorganic pigments na fillers. Ha nwere ike na-enyere mmiri na pigmenti n'oge egweri, n'ụzọ dị irè adsorb n'elu inorganic pigments na-egbochi stratification na ọdịda nke pigmenti, na ike ịchịkwa flocculation na-egbochi sere n'elu agba. Otú ọ dị, n'ihi ntakịrị arọ molekụla, ha enweghị ike inye ihe mgbochi siri ike dị irè, ma ọ bụ na ha enweghị ike imeziwanye gloss na iche nke ihe nkiri agba. Enweghị ike ịgbanye otu ionic anchoring n'elu pigmenti organic.
Ndị na-ekesa arọ molekụla dị elu
N'afọ 1970, a malitere iji pigmenti organic mee ihe n'ọtụtụ buru ibu. ICI's phthalocyanin pigmenti, DuPont's quinacridone pigments, CIBA's azo condensation pigments, Clariant's benzimidazolone pigments, wdg bụ ndị niile mepere emepe wee banye n'ahịa na 1970s. Ihe mbụ dị ala dị arọ molekụla wet na ihe na-agbasasị enweghịzi ike ime ka pigmenti ndị a kwụsie ike, wee malite imepụta ihe mgbasa ọhụrụ dị elu.
Ụdị mgbasa ozi a nwere ịdị arọ nke 5000-25000 g / mol, yana ọnụ ọgụgụ buru ibu nke pigmenti na-ejikọta na molekul. Isi yinye polymer na-enye ndakọrịta sara mbara, na akụkụ nke edoziri na-enye ihe mgbochi siri ike, nke mere na ihe ndị ahụ pigmenti na-adị kpam kpam na ọnọdụ kwụsiri ike ma kwụsie ike. Ndị na-ekesa ịdị arọ dị elu nwere ike ime ka pigmenti dị iche iche kwụsie ike ma dozie nsogbu ndị dị ka agba na-ese n'elu mmiri na mmiri na-ese n'elu mmiri, karịsịa maka pigmenti organic na carbon ojii na obere nha na ịdị mfe flocculation. High molekụla arọ dispersants na-niile deflocculating dispersants na multiple pigmenti anchoring iche iche na molekụla yinye, nke nwere ike ike ibelata viscosity nke agba mado, melite pigmenti tinting ike, agba gloss na vividness, na melite nghọta nke transperent pigments. Na usoro mmiri na-adabere na mmiri, ndị na-ekesa ihe dị arọ dị elu nwere oke mmiri na-eguzogide mmiri na nguzogide saponification. N'ezie, elu molekụla arọ dispersants nwekwara ike inwe ụfọdụ mmetụta, nke tumadi si amine uru nke dispersant. Uru amine dị elu ga-eduga n'ịbawanye viscosity nke usoro epoxy n'oge nchekwa; belata oge mmalite nke polyurethanes akụkụ abụọ (iji aromatic isocyanates); mbelata reactivity nke usoro ọgwụgwọ acid; na mmetụta katalytic na-adịghị ike nke cobalt catalysts na ikuku na-akpọnwụ alkyds.
Site n'echiche nke usoro kemịkal, a na-ekewa ụdị mgbasa ozi a ụzọ atọ:
(1) Ndị na-ekesa polyurethane dị elu dị elu, nke bụ ndị na-ekesa polyurethane. Dị ka ihe atụ, BYK 160/161/163/164, BESM® 9160/9161/9163/9164, EFKA 4060/4061/4063, na ọhụrụ ọgbọ nke polyurethane dispersants BYK 2155 na BESM® 9248 a na-ege ntị na-ege ntị n'oge na-ege ntị nwere pụtara. Ọ nwere ezi viscosity mbelata na agba mmepe Njirimara maka organic pigmenti na carbon ojii, na ozugbo ghọrọ ọkọlọtọ dispersant maka organic pigmenti. Ọgbọ ọhụrụ nke ndị na-ekesa polyurethane emeela ka ọ dịkwuo mma ma mbelata viscosity na njirimara mmepe agba. BYK 170 na BESM® 9107 dabara adaba maka sistemu acid-catalyzed. Onye na-ekesa enweghị uru amine, nke na-ebelata ihe ize ndụ nke agglomeration n'oge nchekwa agba ma ghara imetụta ihicha nke agba.
(2) Polyacrylate dispersants. Ndị na-ekesa ihe ndị a, dị ka BYK 190 na BESM® 9003, aghọwo ndị na-ekesa ọkọlọtọ zuru ụwa ọnụ maka mkpuchi mmiri.
(3) Ndị na-ekesa polymer hyperbranched. Ndị na-ekesa hyperbranched a na-ejikarị eme ihe bụ Lubrizol 24000 na BESM® 9240, nke bụ amides + imides dabere na polyesters nwere ogologo ogologo. Ngwaahịa abụọ a bụ ngwaahịa nwere ikike nke na-adabere na ọkpụkpụ azụ polyester iji mee ka pigmenti kwụsie ike. Ikike ha ijikwa oji carbon ka dị oke mma. Otú ọ dị, polyester ga-egbuke egbuke na obere okpomọkụ ma ọ ga-agbapụtakwa na agba agbachachara. Nsogbu a pụtara na enwere ike iji 24000 naanị na ink. A sị ka e kwuwe, ọ nwere ike igosi ezigbo mmepe agba na nkwụsi ike mgbe ejiri ya gbasaa carbon ojii na ụlọ ọrụ ink. Iji meziwanye arụmọrụ crystallization, Lubrizol 32500 na BESM® 9245 pụtara otu mgbe. E jiri ya tụnyere edemede abụọ mbụ, ndị na-ekesa polymer hyperbranched nwere usoro ihe omimi okirikiri yana otu mmekọ pigmenti gbadoro anya nke ukwuu, na-enwekarị mmepe agba pụtara ìhè yana arụmọrụ mbelata viscosity siri ike. Enwere ike ịhazi ndakọrịta nke ndị na-ekesa polyurethane n'ọtụtụ dị iche iche, na-ekpuchikwa resin niile alkyd site na ogologo mmanụ ruo mmanụ dị mkpụmkpụ, resin polyester niile jupụtara, na resins hydroxyl acrylic, ma nwee ike ịkwado ọtụtụ black carbon na organic pigments nke dị iche iche. Ebe ọ bụ na a ka nwere ọnụ ọgụgụ dị ukwuu nke ọkwa dị iche iche n'etiti 6000-15000 molecular weights, ndị ahịa kwesịrị nyochaa maka ndakọrịta na ego mgbakwunye.
Ndị na-ekesa polymerization na-akwụghị ụgwọ na-achịkwa
Mgbe 1990 gasịrị, a na-emewanyewanye ahịa ahịa maka mgbasasị pigmenti yana enwere ọganihu na teknụzụ polymer njikọ, na ọgbọ ọhụrụ nke ndị na-ekesa polymerization na-achịkwa na-achịkwa.
Polymerization free radical (CFRP) nwere usoro a haziri nke ọma, yana otu arịlịka n'otu nsọtụ polymer yana akụkụ edoziri n'akụkụ nke ọzọ. CFRP na-eji otu monomers dị ka ot polymerization, ma n'ihi na monomers na-ahaziri ọzọ mgbe nile na molekul segments na molekụla arọ nkesa bụ ihe edo, arụmọrụ nke synthesized polymer dispersant nwere qualitative itu. Nke a na-arụ ọrụ nke ọma anchoring otu mma nke ukwuu mgbochi flocculation ikike nke dispersant na agba mmepe nke pigmenti. The kpomkwem gbazere akụkụ na-enye dispersant a ala agba tapawa egweri viscosity na a elu pigmenti mgbakwunye, na dispersant nwere a obosara ndakọrịta dị iche iche resin isi ihe.
Mmepe nke mgbasa ozi mkpuchi nke oge a nwere akụkọ ihe mere eme nke na-erughị 100 afọ. Enwere ọtụtụ ụdị dispersants maka pigmenti dị iche iche na sistemụ na ahịa. Isi ebe a na-esi enweta akụrụngwa na-ekesa ka bụ akụrụngwa petrochemical. Ịbawanye nha nke akụrụngwa a na-emegharị ọhụrụ na ndị na-ekesa bụ ntụzịaka mmepe na-ekwe nkwa nke ukwuu. Site na usoro mmepe nke ndị na-ekesa, ndị na-ekesa na-aghọwanye ndị na-arụ ọrụ nke ọma. Ma ọ bụ ikike ibelata viscosity ma ọ bụ mmepe agba na ikike ndị ọzọ na-akawanye mma n'otu oge, usoro a ga-aga n'ihu n'ọdịnihu.
Nanjing Reborn New Materials na-enyewetting dispersant gị n'ụlọnga maka agba na mkpuchi, gụnyere ụfọdụ dabara Disperbyk.
Oge nzipu: Eprel-25-2025