Ntsiab lus:
1. Wetting thiab dispersing tus neeg sawv cev
2. Defosamer
3. Cov tuab
4. Zaj duab xis-tsim additives
5. Anti-corrosion, anti--anti-anti-algae tus neeg sawv cev
6. Lwm yam kev sib ntxiv
1 ntub thiab dispersing tus neeg sawv cev:
Dej txheej txheem siv dej ua cov dej khov kho lossis tshem tawm cov txheej txheem hluav taws xob tsis tu ncua, yog li cov txheej txheem dej loj heev thaum lub hluav taws xob txheej txheej. Tsis tas li ntawd, hauv cov dej-raws li txheej txheem txheej txheem, feem ntau yog cov polymers thiab cov adsor surfactants, uas yog cov khoom sib txuam thaiv, tsim cov sib cais. Yog li ntawd, xim pleev xim rau cov xim tsev thiab emulsions ua tiav cov txiaj ntsig ruaj khov los ntawm kev sib koom tes ntawm electrostatic thiab stacer thaiv. Nws qhov tsis zoo yog cov neeg tsis zoo electrolyte kuj, tshwj xeeb tshaj yog rau cov nqi hluav taws xob siab.
1.1 Tus neeg ntub dej
Cov tshuaj tiv thaiv ntub dej rau cov txheej txheem dej phos tau muab faib ua anionic thiab notionic.
Kev sib xyaw ntawm cov neeg sawv cev ntub dej thiab dispersing tus neeg saib xyuas tuaj yeem ua tiav cov txiaj ntsig zoo tshaj plaws. Tus nqi ntawm cov neeg sawv cev ntub dej feem ntau yog ob peb ib txhiab. Nws cov nyhuv tsis zoo yog ua npuas ncauj thiab txo cov dej tsis kam ntawm cov yeeb yaj kiab txheej.
Ib qho ntawm txoj kev txhim kho ntawm cov chaw ntub dej yog kom maj mam hloov polyoxyylene alkyl (benzene) Philones (Apzene) Philes (apeo lossis ape PolyoxyThlene Alkyl (Benzene) Philol Philol tau siv dav ua emulsifiers thaum lub sij hawm emulsion polymerization.
Twin surfactants tseem tshiab tsim kho tshiab. Nws yog ob amphiphilic molecules txuas los ntawm ib lub dav hlau. Qhov tseem ceeb tshaj plaws ntawm ntxaib-cell surfactants yog tias qhov tseem ceeb ntawm kev txiav txim siab qis dua li ntawm lawv "ib puag ncig" surfactants, ua raws li kev ua tau zoo. Xws li tam sim no ntxaib 4000, nws yog ntxaib cell sixoxane surfactant, thiab muaj tsis khov ua npuas thiab defoaming cov khoom.
Cov khoom siv cua tau tsim Gemini surfactants. Tsoos surfactants muaj ib pawg hydrophobic thiab ob pawg hydrophilic, tab sis qhov tshiab fydrophilic muaj ob pawg, cov khoom lag luam xws li envirogem ad01.
1.2 cov khoom tawg
Dispersants rau cov xim loojxom tau muab faib ua plaub pawg: polyacid Homopolymer Dispersants thiab lwm cov neeg khib.
Cov tuam txhab tsis siv hluav taws xob zoo tshaj plaws yog cov sodium hexegosphate (Cawv cov khoom lag luam ntawm BK Lub tshuab ntawm nws txoj kev ua yog kom ruaj khov electrostatic rov ua dua los ntawm hydrogen tsev thiab tshuaj lom adsorption. Nws zoo dua yog tias cov tshuaj tsawg, txog 0.1%, thiab nws muaj cov txiaj ntsig zoo ua rau muaj cov xim tsis sib xws thiab fillers. Tab sis kuj muaj qhov tsis txaus ntseeg: ib qho, nrog rau kev nce ntawm PH muaj nqi thiab kub, ua rau muaj kev ruaj khov ntev; Tsis tiav kev txiav txim siab nyob rau hauv nruab nrab yuav cuam tshuam rau qhov ci ci ntawm glosson xim.
Phosphate Ester Dispersants yog kev sib xyaw ntawm cov monoesters, diesters, seem uas muaj cawv thiab phosphoric acid.
Phosphate Ester Dispersananes txawb cov xim xim, suav nrog reactive pigments xws li zinc oxide. Nyob rau hauv cov xim pleev xim zoo nkauj, nws txhim kho gloss thiab huv. Tsis zoo li lwm yam av ntub thiab dispersing additives, ntxiv rau cov phosphate ester tsis cuam tshuam rau KU thiab Ici viscosity ntawm txheej.
Polyacid Homopolymer dispersant, xws li tamol 1254 thiab tamol 850, Tamol 850, Tamol 850 yog homopolymer ntawm methacrylic. Polyacid Copolymer Dispersant, xws li Orotan 731A, uas yog Copolymer ntawm Diisobutylene thiab Muic Acid. Cov yam ntxwv ntawm ob hom dispidants yog tias lawv tsim cov kev kos duab muaj zog lossis muab cov dej tso rau hauv cov saw xaus, thiab qee qhov ntxiv los ntawm electrostatic repulsion rau ua tiav cov txiaj ntsig ruaj khov. Txhawm rau ua kom tus dispersant muaj qhov zoo dispersibility, cov molecular hnyav yuav tsum yog nruj me ntsis tswj. Yog tias lub cev hnyav me me yog qhov tsawg heev, yuav muaj cov tsis txaus sab nrauv; Yog hais tias lub cev hnyav molecular loj dhau lawm, flocculation yuav tshwm sim. Rau polyacrylate dispersants, qhov zoo tshaj plaws dispersion nyhuv yuav ua tiav yog tias qib ntawm polymerization yog 12-18.
Lwm hom kev tsis sib xws, xws li amp-95, muaj lub npe tshuaj ntawm 2-amino-2-methyl-1-propanol. Cov amino pab pawg yog Adsorbed ntawm saum npoo ntawm inorganic hais, thiab cov pab pawg hydroxyl txuas ntxiv rau cov dej, uas ua lub luag haujlwm ruaj khov. Vim nws cov me me, storic hav yuav txwv. AMP-95 yog feem ntau yog PHICULATOR.
Nyob rau hauv xyoo tas los, kev tshawb fawb txog dispersants tau kov yeej teeb meem ntawm flocculation tshwm sim los ntawm siab molecular hnyav, thiab kev loj hlob ntawm siab molecular hnyav yog ib qho ntawm cov qauv. Piv txwv li, lub siab molecular hnyav dispersant EFKA-4580 tsim los ntawm emulsion tsim rau cov roj av txheej, thiab inorganic xim dispersion, thiab muaj dej zoo tsis kam.
Cov pawg amino muaj ib qho zoo sib xws rau ntau cov pigments los ntawm cov kua qaub los yog hydrogen ua tsev. Cov block copolymer dispersant nrog aminoacrylic ua cov pab pawg anchoring tau them rau.
Dispersant nrog DetethylaminoTHyethyl Metacrylate raws li anchoring pawg
Tam sim no Dispers 655 Wetting thiab dispersing thiab dispersing ntxiv yog siv nyob rau hauv cov xim dej tsis tas li ntawd xwb tab sis kuj los tiv thaiv cov xim txhuas los ntawm kev ua kom muaj dej.
Vim muaj kev txhawj xeeb ib puag ncig, biodegradable ntub thiab dispersing cov neeg sawv cev tau tsim tawm, xws li dispersing cov neeg sawv cev, uas yog tsawg-foaming ntub thiab dispersing cov neeg sawv cev.
2 defoober:
Muaj ntau yam cov tshuaj ua dej ua ib txwm muaj, uas feem ntau muab faib ua peb pawg: polysiloxane defoamers thiab lwm yam defoamers.
Ntxhia roj defoamers yog feem ntau siv, feem ntau yog nyob rau hauv tiaj thiab ib nrab nyem cov xim pleev xim.
Polysiloxane Defoamers muaj cov npoo tsis muaj zog, muaj zog defoaming thiab antifoaming muaj peev xwm, lawv yuav tsis cuam tshuam rau qhov tsis xws luag xws li shrinkage ntawm txheej zaj duab xis thiab kev ua yeeb yam tsis zoo.
Kev ua dej ua dej tsis sib xws nrog theem dej kom ua tiav lub hom phiaj ntawm defoaming, yog li nws yog ib qho yooj yim los tsim cov kev tsis xws luag nyob rau hauv cov yeeb yaj kiab txheej.
Nyob rau hauv xyoo tsis ntev los no, Molecular-qib defoamers tau tsim.
Tus neeg sawv cev tiv thaiv tus neeg tiv thaiv no yog cov polymer tsim los ntawm kev tsim tawm ncaj qha rau cov tshuaj tiv thaiv kab mob hauv cov nroj tsuag. Cov roj av molecular ntawm cov pab pawg wydroxyl muaj faib cov tshuaj uas faib tawm ib ncig ntawm cov tshuaj uas tsis yooj yim, thiab kev sib xyaw nrog cov txheej txheej yog qhov zoo. Xws li Molecular-qib defoamers suav nrog cov roj ntxhia - foamstar A10 series, thiab non-silam-fin, tsis muaj roj polymers - foamstar mf series.
Nws tseem raug qhia tias cov qauv molecular no siv cov khoom siv hnub qub hnub qub uas tsis sib xws, thiab tau ua tiav cov txiaj ntsig zoo hauv cov dej sib dhos. Cov khoom cua Cov khoom lag luam molecular-qib defoober tau tshaj tawm los ntawm stout li al. Puas yog acetylene glycol-based ua npuas ncauj tswj tus neeg sawv cev thiab defoamer nrog ob qho kev ntub dej, xws li Surfynol MD 20 thiab Surfynol DF 37.
Tsis tas li ntawd, txhawm rau kom tau raws li cov kev xav tau ntawm kev tsim cov khoom lag luam xoom-VOC, tseem muaj VOC-defoamers dawb, xws li Agitan 315, Agitan E 255, thiab lwm yam.
3 thickeners:
Muaj ntau ntau yam cov thickeners, tam sim no siv yog cellulose ether thiab nws cov derivative alkali-o o.
3.1. Cellulose ether thiab nws derivatives
Hydroxyethyl cellulose (HEC) tau ua ntej kev lag luam carbide tuam txhab hauv lub txhab nyiaj hauv lub txhab xyoo 1932, thiab muaj keeb kwm ntau tshaj 70 xyoo. Tam sim no, cov tuab ntawm cellulose ether thiab nws cov derivatives tsuas yog suav nrog cov cellulose (MHEC), Methyl Hyduloseyl Lwm yam, cov no tsis yog-ionic thickeners, thiab tseem muaj rau cov dej theem tsis cuam tshuam nrog cov roj thickeners. Ntawm lawv, HEC yog feem ntau siv nyob rau hauv looj xim.
Hydrophobically hloov cellulose (HMHEC) qhia txog cov pab pawg hydrophhobic ntawm cov neeg ua ke ntawm Hydrophibic rau qib 430, 331, cellosize sg-100, bermocoll eHM-100. Nws cov nyhuv thickening yog piv rau cov cellulose ether thickeners loj dua molecular hnyav. Nws txhim kho viscosposity thiab leveling ntawm ICI, thiab txo cov nro ntawm HEC yog li ntawm Hec yog kwv yees li 67mn / m, thiab lub nro ntawm HMHEC yog 55-65mN / m.
3.2 alkali-o o thickener
Alkali-o o cov thickeners tau muab faib ua ob pawg: tsis-txuam nrog cov thickeners alkali-o o. Tsis muaj kev txuam nrog yog ib txoj kev polyacrylate alkali o o emulsion. Associative Has yog hydrophobically hloov polyacrylate alkali o o emulsion.
3.3. Polyurethane thickener thiab hydrophobically hloov tsis-polyurethane thickener
Polyurethane thickener, xa mus rau cov hydrophobic pab pawg-hloov ethoxylated polyurethan, uas belongs rau cov neeg tsis yog-ionic sib deev. Heur yog muaj peb ntu: Hydrophobic pab pawg, hydrophilic saw thiab polyurethane pab pawg. Cov pab pawg hydrophobic ua rau lub koom haum tuav haujlwm thiab yog OleylecylStab, thiab lwm yam yog polyethers, xws li polyoxyethylene thiab nws cov derivatenene thiab nws cov kev ua haujlwm. Cov molecular chart of heur yog txuas los ntawm polyurethane pab pawg, xws li IPDI, TDI thiab HMDI. Cov qauv txheej txheem tshwj xeeb ntawm cov koom ua ke thickeners yog tias lawv tau txiav tawm los ntawm hydrophobic pawg. Txawm li cas los xij, qib degree hloov chaw ntawm hydrophobic pawg ntawm ob xaus ntawm qee cov lag luam muaj hyder yog qis dua 0.9, thiab qhov zoo tshaj yog tsuas yog 1.7. Cov tshuaj tiv thaiv yuav tsum nruj me ntsis tswj tau kom tau txais polyurethane thickener nrog nqaim me me faib thiab ua tau ruaj khov. Feem ntau cov neeg nws yog cov ua ke los ntawm stepwise polymerization, yog li cov lag luam muaj feem ntau sib xyaw ntawm cov hnyav molecular.
Ricey li al. siv fluorescent tracer theyener (Pat, tus lej nruab nrab ntawm 0.02%) kom pom tias 0.02%), Lub Micelle sib sau ua ke ntawm Acrysol RM-825 thiab PAT yog li 6. Tus Lub koom haum nruab nrab ntawm cov tuab thiab cov npoo ntawm cov kua txiv hmab txiv ntoo yog li 25 KJ / MOL; Thaj chaw nyob ntawm txhua lub Pat thickener molecule nyob rau saum npoo ntawm cov nplais ntawm cov kab uas yog li 13 nm2, uas yog hais txog thaj chaw Triton uas yog 14 lub sij hawm ntawm 0.9 nm2. Cov kev txuam nrog polyurethane xws li RM-2020NPR, DSX 1550, thiab lwm yam.
Kev loj hlob ntawm cov phooj ywg ib puag ncig ua phooj ywg polyurethane thickeners tau txais kev saib xyuas dav dav. Piv txwv li, Byk-425 yog voc- thiab apeo-dawb urea-hloov polyurethane thickenter. Rho tawm 210, bolchi gel 0434, 3030 thiab 3060 yog nws yog cov kev sib haum polyurethane thickener tsis muaj voc thiab apeo.
Ntxiv nrog rau kab ke linear ua ke polyurethane thickeners tau piav qhia saum toj no, tseem muaj cov phooj ywg zoo li cov phooj ywg polyurethane thickenters. Lub npe hu ua Koom Haum Commoriation Polyurethane thickenter txhais tau tias muaj pendant hydrophobic pab pawg nyob nruab nrab ntawm txhua cov tuab tuab. Xws li thickeners raws li sct-200 thiab sct-275 thiab lwm yam.
Lub hydrophobically hloov kho aminoplast thickener (hydrophobically hloov kho aminoplast thententer-hloov cov pab pawg tshwj xeeb) hloov pauv ntawm plaub qhov chaw sib txawv txawv. Nyob rau hauv ib txwm txuas ntxiv ntawm hydrophobic pawg, muaj tsuas yog ob pawg hydrophobic hloov pauv tsis txawv ntawm hydrophobic pawg tau ntxiv, xws li ntau txog 8%, Cov tshuaj tiv thaiv tuaj yeem hloov kho kom tsim cov amino thickeners nrog ntau pawg blocked hydrophobic pawg. Ntawm chav kawm, qhov no tseem yog ib qho tuab sib txuas. Qhov kev siv hydrophobic hloov kho amino thickener tuaj yeem tiv thaiv cov xim viscosity los ntawm kev ntxiv ntawm surfactants thiab glycolol cov kuab tshuaj thaum xim sib kis tau ntxiv. Qhov laj thawj yog tias muaj cov pab pawg hydrophobic muaj zog tuaj yeem tiv thaiv kev txom nyem, thiab ntau pawg hydrophobic muaj cov koom haum zog. Xws li thickeners li OPECTIFO TVs.
Hydrophobic hloov polyet thickener (HMPE) kev ua yeeb yam ntawm hydrophobically hloov ua ke ntawm hydraflow polyete suav nrog Athaflow NLS200, NLS210 thiab NHS300 ntawm Hercules.
Nws cov txheej txheem tuab yog cov txiaj ntsig ntawm cov hydrogen kev thiab koom nrog pab pawg kawg. Piv nrog cov tuab tuab, nws tau zoo dua los tiv thaiv kev tawm tsam thiab kev tiv thaiv cov khoom siv los tiv thaiv. Raws li cov pab pawg sib txawv ntawm cov pab pawg kawg, hloov polyurea thickeners, nruab nrab polyurea thickeners thiab siab polyurea thickeners. Thawj ob yog siv rau cov kuab tshuaj thickening, thaum cov qib siab polyurea throtings thiab cov txheej txheem dej pleev xim. Cov khoom lag luam ntawm cov polarity tsawg, nruab nrab polarity thiab siab polyurea thickeners yog byk-410 thiab Byk-420 feem.
Hloov polyamide ciab slurry yog rheological additive synthesized los ntawm kev qhia hydrophilic pawg xws li polecular saw ntawm Amide Wax. Tam sim no, qee hom lag luam yog siv los kho cov thixotrotropy ntawm lub system thiab txhim kho cov anti-thixotrotropy. Kev ua kom pom kev zoo.
Lub Sijhawm Post: Nov-22-2022