Araldite KU 610 - Dawex Chemical

1 Ciba Specialty ChemicalsElectronicPolymersHeavy Electrical Araldite Powder CoatingAraldite KU 610A formulated, one-component system based on epoxyresin and an amine hardenerNon-porous, insulating coatings which withstand high electrical stressesand can be applied to metal components of all kindsApplicationsSpray with or without electrostatic charging and cureProcessing methodsGood protection against corrosionGood adhesionVery good mechanical and electrical properties, good flexibility andhigh dielectric strengthPropertiesEdition:July 2000 Replaces Edition:April 2000 Processing(guideline values)General instructionsThe powder is sprayed onto the pre-heated substrate where the particles fuse to form acontinuous film which is then electrostatic spray guns are used the substrate being coated need to be pre-heated,although subsequent curing will still be necessary.

2 Pre-heating facilitates application ofthick equipment is best used for coating bulky parts having a large surface areaand poor heat retention, or for parts having complex shapes. Powder wastage,amounting to around 5% when cyclone equipment is used, can be reduced to about 1%by using special recovery bed coating, electrostatic fluidized bed coating or spraying, and conventionalspraying techniques are described in "Applications for Araldite No. 40' (The insulation andencapsulating of electrical and electronic assemblies with Araldite epoxy resin powders").

3 We shall be happy to provide advice on selecting the equipment best suited to principle, any material which withstands the required pre-heating and curingtemperatures may be coated with Araldite KU of sharp edges and corners will obviously not be as good as on rounded edgesand maximum adhesion is not the prime consideration, or if a part is to be coated all over,cleaning and degreasing with normal organic solvents will suffice ( trichlorethylene,perchlorethylene, acetone, or the Chlorothene NU made by Dow Chemical Corporation).

4 For maximum adhesion, the surface to be coated must be roughened by sandblasting,sanding or pickling before it is degreased with the usual soon as possible after pretreatment, the parts to be coated should be heated to at least150 C. To make sure that no new oxide layer forms on the surface of the part to becoated, pre-heating should take not more than 30 to 60 on the application method selected and the coating thickness required (cf."General", above), a spray gun is used to coat the pre-heated part as evenly as possiblewith Araldite KU 610.

5 Spraying can be continued until the heat retained by the part beingcoated no longer suffices to fuse the powder particles being electrostatic equipment is used, spraying can be continued until the charge built upin the powder surface reaches a level at which similar polarity results in repulsion of newparticles and no more powder can be deposited. Pre-heating the part to be coated willdelay build-up of the particle-repulsing charge and facilitate the production of gelling and cure times given above cover the time during which heat is applieddirectly to the coating, the actual temperature acting on the resin coating.

6 They do notinclude the time required to heat up the article to be KU 610 should be stored at 18-25 C, dry in tightly sealed original specific advise regarding storage can be found on product label. After this date,the product may be processed only following reanalysis. Partly emptied containers shouldbe tightly closed and stored cool immediately after It should not be stored attemperature above 40 information on waste disposal and hazardous products of decomposition in the eventof fire, refer to the Material Safety Data Sheets (MSDS) for these particular Ltd.

7 July 2000 Araldite KU 610 Processing(guideline values)Post-treatmentSpraying is followed by curing. The gelling and cure times required are as follows:Curing temperatureGeltimeMinimum cure time Cmin( ) hours13055 - 70approx. 1014035 - 45515025 - 30316016 - 2021806 - 912003 - quoted gelling and curing times refer to the direct effect of temperature on the epoxyresin coating and do not include the time required to preheat the substrate to the 2000 Araldite KU 6103 Properties(guideline values) Araldite KU 610 Appearanceblue-grey powderParticle sizesieve analysis mY 100 Densityg/l610 Softening pointKoflerhot bench C70 - 75 Melting pointKoflerhot bench C90 - 100 Flash point C150 Edge coveragesquare-section rod % > 35 Properties of coatings cured for 1 hour at 180 CDensityISO 1183-3 transition temperature ISO 11357-2 C105-115 Ball indentation hardnessISO 2039-1N/mm296 Erichsen distensibility(film thickness mm)

8 ISO 1520mm6 - 8 Tensile shear strengthISO 4587mPa27-31 Impact resistancespecial test Ciba1 kg/ [ 90 cm(ball dropped on reverse side)Water absorption *1 hour, 100 C% - days, 20 C% vapour diffusionDeeg & Hg (approx).Dielectric constant r (50Hz)20 CIEC factor tan (50 Hz)20 CIEC 60250% resistivity at20 CIEC 60053 240 hours immersion in water, determined at 20 strength 50 C/s 25 C, (film thicknessapprox. )CIBA-testkV/mm46* Aluminium sheet, 70x70x1,5 mm coated one side only, film thickness 0,5 mm 4 Vantico Ltd.]

9 July 2000 Araldite KU 610 Properties(guideline values)Weight loss on heat ageing of Araldite KU 610 powder coatingsCuring schedule:60 min at 180 CTest specimens:sheet iron mmCoating thickness:approx. 750 + + + +04[h][%]120 C140 C160 CWeight loss on heatageingVantico Ltd. July 2000 Araldite KU 6105 Industrial hygieneMandatory and recommended industrial hygiene procedures should be followed when-ever our products are being handled and processed. For additional information pleaseconsult the corresponding Safety Data Sheets and the brochure "Hygienic precautions forhandling plastics products of Ciba Specialty Chemicals Inc.

10 (Publ. No. 24264/e).HandlingprecautionsSafety precautions at workplace:protective clothingglovesarm protectorsgoggels/safety glassesrespirator/dust maskSkin protectionbefore starting workafter washingCleansing of contaminated skinClean shop requirementsDisposal of spillageVentilation:of workshopof workplaceyesessentialrecommended when skin contact likelyyesrecommendedApply barrier cream to exposed skinApply barrier or nourishing creamDab off with absorbent paper, wash withwarm water and alkali-free soap, then dry withdisposable towels.