In sengoloa sa ho qetela, re hlahisitse ho hlaha ha li-dispersants, mekhoa e meng le mesebetsi ea li-dispersants. Mo temaneng ena, re tla hlahloba mefuta ea li- dispersants ka linako tse fapaneng tse nang le nalane ea nts'etsopele ea bahlasoa.

Tloaelo e tlase ea boima ba molek'hule ea ho kolobisa le ho qhalakanya
Sehlahisoa sa khale ka ho fetesisa e ne e le letsoai la triethanolamine la acid e mafura, e ileng ea hlahisoa 'marakeng lilemo tse ka bang 100 tse fetileng. Dispersant ena e sebetsa hantle haholo ebile e na le moruo lits'ebetsong tse akaretsang tsa pente ea indasteri. Ho ke ke ha khoneha ho e sebelisa, 'me ts'ebetso ea eona ea pele tsamaisong ea oli ea alkyd ha e mpe.

Lilemong tsa bo-1940 ho isa ho 1970, li-pigments tse neng li sebelisoa indastering ea ho roala e ne e le li-pigment tse sa tloaelehang le li-pigment tse ling tse neng li le bonolo ho li hasanya. Li-disperants nakong ena e ne e le lintho tse tšoanang le li-surfactants, tse nang le sehlopha sa pigment anchoring pheletsong e 'ngoe le karolo e lumellanang le resin pheletsong e' ngoe. Limolek'hule tse ngata li ne li e-na le ntlha e le 'ngoe feela ea pigment.

Ho ea ka pono ea sebopeho, li ka aroloa ka mekhahlelo e meraro:

(1) metsoako ea asiti e mafura, ho kopanyelletsa le li-amide tsa asiti e mafura, matsoai a asiti ea mafura a amide, le li-polyether tsa asiti e mafura. Ka mohlala, li-acids tse fetotsoeng tse nang le mafura a nang le li-blocks tse entsoeng ke BYK ka 1920-1930, tse neng li tšeloa letsoai ka li-amine tse telele ho fumana Anti-Terra U. Ho boetse ho na le BYK's P104 / 104S e nang le lihlopha tse phahameng tsa ho qetela tse thehiloeng ho karabelo ea tlatsetso ea DA. BESM® 9116 ho tloha Shierli ke dispersant e senyang le e tloaelehileng ea ho hasana indastering ea li-putty. E na le boemo bo botle ba ho koloba, thepa e khahlanong le ho rarolla le botsitso ba polokelo. E ka boela ea ntlafatsa thepa ea anti-corrosion mme e sebelisoa haholo ho li-primers tsa anti-corrosion. BESM® 9104/9104S e boetse e le "flocculation dispersant" e tloaelehileng e nang le lihlopha tse ngata tsa anchoring. E ka theha sebopeho sa marang-rang ha se hasane, se thusang haholo ho laola sedimentation ea pigment le 'mala o phaphametseng. Kaha lisebelisoa tse tala tse tsoang ho mafura a acid ha li sa itšetleha ka lisebelisoa tse tala tsa petrochemical, li ka nchafatsoa.

(2) Organic phosphoric acid ester polymers. Mofuta ona oa dispersant o na le bokhoni ba ho tiisa bokahohle bakeng sa mebala e sa tloaelehang. Ka mohlala, BYK 110/180/111 le BESM® 9110/9108/9101 ho tloha Shierli ke li-disperpers tse babatsehang bakeng sa ho hasanya titanium dioxide le li-pigments tse sa tloaelehang, tse nang le phokotso e babatsehang ea viscosity, nts'etsopele ea mebala le ts'ebetso ea polokelo. Ho feta moo, BYK 103 le BESM® 9103 ho tloha Shierli ka bobeli li bontša melemo e babatsehang ea ho fokotsa viscosity le botsitso ba polokelo ha li qhalakanya matte slurries.

(3) Li-polyethers tsa aliphatic tse se nang ionic le li-alkylphenol polyoxyethylene ethers. Boima ba limolek'hule tsa mofuta ona oa dispersant hangata bo ka tlase ho 2000 g/mol, 'me bo shebane haholo le ho hasana ha li-pigments le li-filler. Li ka thusa ho kolobisa li-pigments nakong ea ho sila, li adsorb ka holim'a li-pigments tse sa tsitsang le ho thibela stratification le pula ea li-pigments, 'me li ka laola ho phalla le ho thibela mebala e phaphametseng. Leha ho le joalo, ka lebaka la boima ba limolek'hule tse nyenyane, li ke ke tsa fana ka tšitiso e sebetsang ea steric, leha e le hore li ka ntlafatsa khanya le ho khetholla ha filimi ea pente. Lihlopha tsa ionic anchoring ha li khone ho bapatsoa holim'a li-pigments tsa tlhaho.

Li-disperants tse phahameng tsa boima ba limolek'hule
Ka 1970, li-pigment tsa organic li ile tsa qala ho sebelisoa ka bongata. Li-pigments tsa ICI tsa phthalocyanine, li-pigment tsa quinacridone tsa DuPont, li-pigment tsa azo condensation tsa CIBA, li-pigment tsa benzimidazolone tsa Clariant, joalo-joalo, kaofela li ile tsa etsoa indastering 'me tsa kena' marakeng ka bo-1970. Lisebelisoa tsa pele tsa boima ba limolek'hule tse tlase le tse qhalakang li ne li ke ke tsa hlola li tsitsisa mebala ena, 'me lisebelisoa tse ncha tse pharalletseng tsa boima ba limolek'hule li ile tsa qala ho hlahisoa.

Mofuta ona oa dispersant o na le boima ba molek'hule ba 5000-25000 g / mol, e nang le palo e kholo ea lihlopha tsa pigment anchoring holim'a molek'hule. Ketane e kholo ea polymer e fana ka tumellano e pharalletseng, 'me ketane ea mahlakoreng e rarollotsoeng e fana ka tšitiso ea steric, e le hore likaroloana tsa pigment li be boemong bo tsitsitseng le bo tsitsitseng. Li-disperants tse phahameng tsa boima ba limolek'hule li ka tsitsisa li-pigments tse fapaneng le ho rarolla mathata a kang 'mala o phaphametseng le ho phaphamala, haholo-holo bakeng sa li-pigments tsa tlhaho le carbon black e nang le boholo bo fokolang le ho phalla habonolo. Li-dispersants tse phahameng tsa boima ba limolek'hule kaofela ke li-dispersants tse senyang tse nang le lihlopha tse ngata tse nang le mebala e mengata ka har'a ketane ea limolek'hule, tse ka fokotsang ka matla ponahalo ea 'mala oa pente, ho ntlafatsa matla a ho kenya mebala, ho benya ha pente le ho hlaka, le ho ntlafatsa pepeneneng ea mebala e bonaletsang. Lits'ebetsong tse thehiloeng metsing, li-disperants tse phahameng tsa boima ba limolek'hule li na le ho hanyetsa metsi hantle le ho hanyetsa saponification. Ha e le hantle, li-disperants tse phahameng tsa boima ba limolek'hule le tsona li ka 'na tsa e-ba le litla-morao tse ling, tseo haholo-holo li tsoang ho boleng ba amine ba dispersant. Boleng bo phahameng ba amine bo tla lebisa ho ho eketseha ha viscosity ea litsamaiso tsa epoxy nakong ea polokelo; nako e fokotsehileng ea ts'ebetso ea likarolo tse peli tsa polyurethanes (ho sebelisa li-isocyanate tse nkhang hamonate); ho fokotsa ts'ebetso ea litsamaiso tsa ho folisa acid; le phello e fokolisang ea li-catalyst tsa cobalt ho li-alkyds tse omisang moea.

Ho latela sebopeho sa lik'hemik'hale, mofuta ona oa dispersant o arotsoe haholo ka mekhahlelo e meraro:

1 Ka mohlala, BYK 160/161/163/164, BESM® 9160/9161/9163/9164, EFKA 4060/4061/4063, le moloko oa morao-rao oa li-dispersants tsa polyurethane BYK 2155 le BESM® 9248ant mefuta e mengata e hlahileng. E na le phokotso e ntle ea viscosity le thepa ea nts'etsopele ea mebala bakeng sa li-pigments tsa tlhaho le carbon black, 'me e kile ea fetoha mokhoa o tloaelehileng oa ho hasana bakeng sa mebala ea tlhaho. Moloko oa morao-rao oa li-disperants tsa polyurethane o ntlafalitse haholo ho fokotsa viscosity le thepa ea nts'etsopele ea mebala. BYK 170 le BESM® 9107 li loketse haholoanyane bakeng sa litsamaiso tsa acid-catalyzed. The dispersant ha e na boleng ba amine, e leng ho fokotsa kotsi ea agglomeration nakong ea polokelo ea pente 'me ha e ame ho omisoa ha pente.

(2) Li-disperants tsa Polyacrylate. Li- dispersants tsena, tse kang BYK 190 le BESM® 9003, li fetohile li-disperpers tse tloaelehileng bakeng sa liphahlo tse thehiloeng metsing.

(3) Li-disperpers tsa polymer tse nang le li-hyperbranched. Li-dispersants tse sebelisoang ka ho fetesisa tsa hyperbranched ke Lubrizol 24000 le BESM® 9240, e leng li-amides + imides tse thehiloeng ho li-polyester tsa ketane e telele. Lihlahisoa tsena tse peli ke lihlahisoa tse nang le tokelo ea molao tse itšetlehileng haholo ka mokokotlo oa polyester ho tsitsisa li-pigments. Bokhoni ba bona ba ho sebetsana le carbon black bo ntse bo le botle haholo. Leha ho le joalo, polyester e tla khanya ka mocheso o tlaase 'me e tla boela e phunyeletse pente e phethiloeng. Bothata bona bo bolela hore 24000 e ka sebelisoa feela ka li-inks. Ntle le moo, e ka bonts'a nts'etsopele e ntle haholo ea 'mala le botsitso ha e sebelisoa ho qhala khabone e ntšo indastering ea enke. Bakeng sa ho ntlafatsa ts'ebetso ea kristale, Lubrizol 32500 le BESM® 9245 li ile tsa hlaha ka ho latellana. Ha ho bapisoa le mekhahlelo e 'meli ea pele, li-hyperbranched polymer dispersants li na le sebopeho sa limolek'hule tse chitja le lihlopha tse amanang haholo tsa pigment, hangata li na le nts'etsopele e ikhethang ea mebala le ts'ebetso e matla ea ho fokotsa viscosity. Ho lumellana ha li-dispersants tsa polyurethane ho ka fetoloa ka mefuta e mengata, haholo-holo ho koahela li-alkyd resin ho tloha ho oli e telele ho ea ho oli e khutšoanyane, li-resin tsa polyester tse tletseng, le li-hydroxyl acrylic resin, 'me li ka tsitsisa boholo ba li-carbon blacks le li-pigments tsa tlhaho tsa mefuta e sa tšoaneng. Kaha ho ntse ho e-na le palo e kholo ea limaraka tse fapaneng pakeng tsa boima ba limolek'hule tse 6000-15000, bareki ba hloka ho shebella bakeng sa ho lumellana le ho eketsa palo.

Laoleha mahala radical polymerization dispersants
Kamora 1990, tlhoko ea 'maraka ea ho hasana ha pigment e ile ea ntlafatsoa le ho feta mme ho bile le tsoelo-pele ho theknoloji ea polymer synthesis,' me ho ile ha ntlafatsoa moloko oa morao-rao oa li-dispersants tse laoloang tsa mahala tsa polymerization.

Controllable free radical polymerization (CFRP) e na le sebopeho se hlophisitsoeng hantle, se nang le sehlopha se anchoring pheletsong e 'ngoe ea polymer le karolo e rarollotsoeng pheletsong e' ngoe. CFRP e sebelisa li-monomers tse tšoanang le polymerization e tloaelehileng, empa hobane li-monomers li hlophisitsoe khafetsa likarolong tsa limolek'hule 'me kabo ea boima ba limolek'hule e tšoana le ho feta, ts'ebetso ea "polymer dispersant" e kopaneng e na le boleng bo holimo. Sehlopha sena se sebetsang hantle sa anchoring se ntlafatsa haholo matla a anti-flocculation a dispersant le nts'etsopele ea 'mala oa pigment. Karolo e nepahetseng e rarollotsoeng e fa dispersant mebala e tlase e silang viscosity le tlatsetso e phahameng ea pigment, mme dispersant e na le tumellano e pharaletseng le lisebelisoa tse fapaneng tsa motheo oa resin.

Nts'etsopele ea li-disperants tsa mehleng ea kajeno tsa ho roala li na le nalane ea lilemo tse ka tlase ho 100. Ho na le mefuta e mengata ea li-disperants bakeng sa mebala le litsamaiso tse fapaneng 'marakeng. Mohloli o ka sehloohong oa lihlahisoa tse tala e ntse e le lisebelisoa tse tala tsa petrochemical. Ho eketsa karolo ea lisebelisoa tse tala tse ka nchafatsoang ho li-disperants ke tataiso e ts'episang haholo ea nts'etsopele. Ho tloha ts'ebetsong ea nts'etsopele ea li-dispersants, li-disperpers li ntse li sebetsa hantle haholoanyane. Ebang ke bokhoni ba ho fokotsa viscosity kapa nts'etsopele ea mebala le bokhoni bo bong bo ntse bo ntlafala ka nako e le 'ngoe, ts'ebetso ena e tla tsoelapele nakong e tlang.

Nanjing Reborn New Materials e fana kaho kolobisa ntho e qhalang bakeng sa lipente le ho roala, ho kenyelletsa le tse tšoanang le Disperbyk.