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Clear Coat and Hydro-Graphics applied to CeraKote Ceramic Base Coating on Custom AR-15.

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Testing: MILI-OHMS per Sq. Inch using a calibrated Fluke Multimeter with Hard-wired Probes.

 

Florida Finishing Electromagnetic and Radio Frequency Shielding
SprayLat 599-Y2000 Product Data Sheet

COPPER CONDUCTIVE COATING

Specifications:

A sprayable metallic coating system using a specially formulated nonoxidizing copper as the conductive agent. Developed for use as an RFI and EMI shield for plastic electronic equipment housings. 599-Y2000 can be used on acrylic, ABS and structural foams, e.g. Noryl, Valox, etc. as well as solvent sensitive substrates such as polycarbonate and polystyrene.

Product Limitations:

The solvent system of this product is designed for fast drying and early measuring of conductivity. In hot, humid weather the fast drying may result in sporadic blushing. Blushing is a whitening of the surface of the coating caused by condensation of water in a hot, humid environment. The addition of 2-3% (3-4 ounces per gallon)of Butyl Cellosolve (Ethylene-Glycol-Mono-Butyl-Ether) will eliminate blushing.

Application:

HVLP or standard air gun with fluid recirculation system is recommended. A pressure pot may be used provided that: (1) it has a large diameter, paddle type agitator to keep copper in suspension and (2) a short translucent MEK-resistant fluid line of 1/8" (3.15 mm) ID or smaller is used (such as Binks Synflex) to prevent settling in the Fluid line.

Density & Viscosity: (@ 75 Degrees F +/- 3)

SOLIDS: 29% ± 2% by weight.

DENSITY: 8.5 ± .2 lbs. per gallon (1.02 ± 0.03 kg per liter)

VISCOSITY: Check viscosity after thorough mixing. Adjust to 19 seconds(#2 EZ Viscosity Cup) if necessary.

The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile stress. For liquids, it corresponds to the informal notion of "thickness". For example, honey has a higher viscosity than water.

Viscosity is due to friction between neighboring parcels of the fluid that are moving at different velocities. When fluid is forced through a tube, the fluid generally moves faster near the axis and very slowly near the walls, therefore some stress (such as a pressure difference between the two ends of the tube) is needed to overcome the friction between layers and keep the fluid moving. For the same velocity pattern, the stress required is proportional to the fluid's viscosity. A liquid's viscosity depends on the size and shape of its particles and the attractions between the particles.

A fluid that has no resistance to shear stress is known as an ideal fluid or inviscid fluid. Zero viscosity is observed only at very low temperatures, in superfluids. Otherwise all fluids have positive viscosity. If the viscosity is very high, for instance in pitch, the fluid will appear to be a solid in the short term. A liquid whose viscosity is less than that of water is sometimes known as a mobile liquid, while a substance with a viscosity substantially greater than water is called a viscous liquid.

In paint industries, viscosity is commonly measured with a Zahn cup, in which the efflux time is determined and given to customers. The efflux time can also be converted to kinematic viscosities (centistokes, cSt) through the conversion equations. A Ford viscosity cup measures the rate of flow of a liquid. This, under ideal conditions, is proportional to the kinematic viscosity.

17 - 21 sec. Zahn #2

viscosity animation diagram
A simulation of substances with different viscosities. The substance above has lower viscosity than the substance

 

Theoretical Coverage: (no application loss)

Also known as the "Spreading Rate". Theoretical Coverage is COMPUTED from @ 100% transfer efficiency. Including all reducer necessary to meet the Manufacturer Viscosity Recommendations as specified above.

190 sq. ft./gal @ 1.0 MIL DFT

100% transfer efficiency.

Surface Resistivity and Film Thickness: (OHMS per SQ & DFT)

More than 75 dB from 1 MHz to 1 Ghz.

<0.05 ohms/sq. @ 1 mil (25 microns) DFT.
<0.025 ± 0.005 ohms/sq. @ 2 mils (50 microns) DFT.

These readings can be achieved under proper conditions: (1) properly mixed paint; (2) film is 100% dry.

There are several methods for measurement of Shielding Coating thickness and they fall into two categories. These categories are wet film and dry film coating measurements.

Florida Finishing measures all EMI/RFI Shielding by method of MEANS using a Calibrated Micrometer to determine the actual film thickness during a production run.

Coating Film Samples are retrieved from special Masking applied

Test coupons are the ideal method for measuring the coating thickness, whether is it spraying or dipping, and can be kept as a physical record of the performance. Apply the coating to the test coupons at the same time as the circuit boards provides a permanent measurement and an accurate guide to the coating thickness.

MILS Dry: 1.0 - 1.25

Dry film Conformal Coating Thickness Measurement

 

Humidity Resistance & Drying:

HUMIDITY RESISTANCE: No change in resistivity or attenuation when tested in accordance with MIL-STD-202 Method 106 - 40 cycles; MIL-STD-810 Method 507 Procedure 5 - 480 hours cycling; Meets UL Specification
746-C.

Note 1: Do not exceed the heat distortion temperature of the substrate.

Note 2: For Re-Coat after 7 days, scuff sand to ensure adhesion of re-coat.

DRYING TIME: 30 minutes flash off at room temperature; then 30 minutes @ 140°F. (60°C.) at 2.0 mils (50 microns). Longer if thicker film, shorter if thinner film, to achieve desired resistivity.

Touch, Tack, Re-Coat, Force.

To Touch: 30 Minutes
To Handle: 90 Minutes
To Pack: Overnight (no poly bags)
To Re-Coat: No critical re-coat time
To Force Dry: 30 Minutes at 140° F

Mixing Ratio:

The solvent system of this product is designed for fast drying and early measuring of conductivity. In hot, humid weather the fast drying may result in sporadic blushing. Blushing is a whitening of the surface of the coating caused by condensation of water in a hot, humid environment. The addition of 2-3% (3-4 ounces per gallon)of Butyl Cellosolve (Ethylene-Glycol-Mono-Butyl-Ether) will eliminate blushing.

Non-Catalyzed

Adjust with MEK, if necessary.

Shelf Life:

Recommended storage in unopened containers is 12 months from date of shipment. Older material
should have all Q.C. requirements rechecked before using.

The total period of time beginning with the date of manufacture, or date of pack, and terminated by the date by which an item must be used (expiration date) or subjected to inspection, test, or disposal action.

Shelf-life is not to be confused with service-life (defined as, A general term used to quantify the average or standard life expectancy of an item while in use.)

1-Years

From SHIP Date. Based on Unopened container.

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