Desco TB-7001 User Manual

DESCO INDUSTRIES INC. Technical Bulletin TB-7001
Statguard® Conductive Acrylic Paint Application Instructions
Figure 1. Statguard® Conductive Acrylic paint.
Description
Statguard® Conductive Acrylic Paint is a one part floor coating formulated to produce controlled dissipation of static electrical charges. Statguard® Conductive Acrylic Paint is very effective as a static control floor coating for electronics manufacturing, assembly, and storage. It is available in grey (similar to PMS 432) in 1 gallon (3.8 litres) containers and in 5 gallon (19 litres) containers; and in light grey (similar to PMS 429) in 5 gallon (19 litres) containers. The color may vary between production lots.
NOTE: Statguard® Conductive Acrylic Paint has a one year shelf life from the date of invoice. The product should not be allowed to freeze. Store at temperatures above 45 degrees as stated in the Material Safety Data Sheet. We recommend that these products be stored in their original containers and be sealed when not in use. We cannot guarantee performance if not properly mixed or is used after one year from date of sale.
General Guidelines
GROUNDING:
Conventional grounding practices like connecting painted surfaces to ground or internal building grounds are only required for applications of Statguard® Conductive Acrylic Paint that are not in excess of 20 square feet (1.8 square metres). For applications that are greater than 20 square feet (1.8 square metres), grounding should not be required. The electrical properties of conductive paint enable the surface to dissipate 5000 volts to zero in less than
0.01 seconds per FTMS 101C, Method 4046 without conventional grounds. The conductive paint becomes a capacitive reservoir that effectively drains static charges.
Foot grounders should be used in conjunction with flooring painted with Statguard® Conductive Acrylic Paint to properly ground personnel. For more information, please contact any of the Desco Industries companies.
Made in America
Surface Preparation
The two most important characteristics for successful application of Statguard® Conductive Acrylic Paint applications are:
1. The surface must be clean, dry, dull, and smooth. Heavy dirt or grease build-up should be removed with a stripper or degreaser. Cleaning methods range from: sweeping, vacuuming, wire brush, air-blasting, water jet, steam cleaning, or stripping.
2. If the surface is concrete, it must be in good condition.
CONCRETE:
New concrete should cure for a minimum of 28 days before coating with Statguard® Conductive Acrylic Paint. Not all concrete is created equal -- concrete surfaces vary widely in physical and chemical qualities due to the way the concrete was formulated, poured, or finished.
There are several methods to prepare problem concrete. Each method depends on the condition of the concrete. Adhesion properties can be increased by profiling or roughing the surface through acid etching, rotary drum sanding, scarifying, or mechanically scratching the surface.
You must test for moisture in the concrete. If moisture is present, the floor should not be coated until the source of the moisture is determined and eliminated.
PRIMING:
Statguard® Conductive Acrylic Paint bonds well to clean, dry concrete. However, a standard industrial primer can be used on certain difficult to bond substrates and enhance the adhesion of Statguard® Conductive Acrylic Paint.
PREVIOUSLY PAINTED SURFACES:
The surface should be clean and free of dust, grease, wax, and soap residue. Wash with ordinary detergent and water. Rinse thoroughly with clean water and let dry. Glossy surfaces can be dulled by lightly sanding and then vacuuming and cleaning. Cracks and holes should be repaired before applying the Statguard® Conductive Acrylic Paint. Adhesion can be improved by using a standard industrial type primer.
UNPAINTED SURFACES:
Adhesion can be improved by using a standard industrial type primer. Metal should be primed with red oxide primer. Concrete, wood, plastics, and most other surfaces should be properly cleaned. Let dry and then apply Statguard® Conductive Acrylic Paint.
COVERAGE:
Statguard® Conductive Acrylic Paint will cover 300 to 400 square feet (27.87 to 37.16 square metres) at a 1 to 1.5 mil (0.0254 to
0.0381 mm) thick dry film per gallon (3.87 litres) on a smooth surface. Coverage is less on coarse or textured surfaces. Two coats are recommended to achieve maximum performance from the paint.
DESCO INDUSTRIES INC. • 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178 • Fax (909) 627-7449 • Web Site: DescoIndustries.com
TB-7001 October 2009 Page 1 of 7
© 2009 DESCO INDUSTRIES INC.
Employee Owned
Application
Always use in a well ventilated area or wear a suitable respirator. Wear appropriate eye protection such as splash goggles and impervious type protection gloves to protect hands.
MIXING
1. Mix paint thoroughly before use (See Figure 2) using a 500-1500 RPM variable speed drill and paint mixing attachment or a paint mixer.
2. If the paint, after properly mixing, is not freely transferring from the roller to the floor, the Statguard ESD paint can be thinned with water up to 10% max by volume.
a. Start by slowly mixing 5% water into the master container and apply again.
b. Do not add more than 10% of water to the mix.
APPLICATION BY ROLLER
1. Stir paint thoroughly to mix any settled solids to produce uniform grey color.
1.
Mix any settled solids to produce a uniform grey color.
3.
Saturate a 1/4” fine nap roller with paint, remove excess paint and trapped air.
Figure 2. Paint application with roller.
2. Combine separate cans of paint into one container to ensure uniform color distribution. It is recommended that a test area be coated to ensure that the adhesion and electrical performance of the paint is acceptable. (See Adhesion Testing, Figure 5.) If the test areas show inadequate adhesion, use an industrial floor primer/sealer.
3. Saturate a 1/4” (6.35 mm) fine nap roller or an industrial brush with paint. Remove excess paint and trapped air from the applicator by moving applicator several times in the paint tray.
4. A minimum number of strokes from the applicator on the substrate is recommended to minimize air bubbles.
2.
Combine separate cans into a larger container.
4.
A minimum number of strokes from the applicator is recommended.
Clean Up
Wash applicators with water immediately after painting. Remove paint spills promptly with a wet cloth. Close container after each use. Keep container from freezing.
Drying Time
It is recommended that Statguard® Conductive Acrylic Paint be allowed to dry at a temperature in excess of 45°F (7°C) until dry.
A minimum of 1 to 2 hours drying time should be allowed before applying the second coat. The finish can be applied after 48-72 hours or until the last coat of paint is cured. Wait a minimum of 12 hours drying time after the last coat before allowing light traffic on the coated area. At high humidity levels, a longer drying time may be necessary. Do not force dry.
APPLICATION BY SPRAY
Conventional Spray Gun: “E” fluid tip and needle and #704, 765 or 78 air gap.
Airless Spray: Spray gun and spray cap or suitable orifice diameter
0.020-0.025” (0.508-0.635 mm). Mix paint thoroughly before using
and stir occasionaly when applying. No thinning necessary for spray applications. Room tempera ture must be above 50°F (10°C).
A minimum of two coats of Statguard® Conductive Acrylic Paint is recommended for appropriate static protection.
DESCO INDUSTRIES INC. • 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178 • Fax (909) 627-7449 • Web Site: DescoIndustries.com
TB-7001 Page 2 of 7
Figure 3. Spray paint application
Maintenance
Use sweeper, vacuum, or broom to remove dirt. Allow two weeks drying time before using a damp mop to clean the coated area. Do not use abrasive cleaners, floor rinse, or scrubbing machine to clean the floor.
Finish/Sealer
Desco Statguard® Conductive Acrylic Paint can be overcoated or sealed with Statguard® Floor Finish static dissipative coating to increase durability, enhance shine, improve ease of maintenance, and seal out dirt and debris. Desco Statguard® Conductive Light Grey Acrylic Paint needs the Statguard® Floor Finish for gloss and ease of maintenance . Statguard® is a polymer base floor finish/sealer that can be used as a top coat on the Conductive Acrylic Paint. Surface resistivity will then be in the 106-107 ohms range. Two coats are recommended. Three coats will improve electrical properties, durability and reduce frequency of
© 2009 DESCO INDUSTRIES INC.
Employee Owned
1.
2.
Use a razor to cut into a painted, dried
Figure 4. Electrical testing on
floor.
the painted floor using a Surface Resistance Test Kit.
maintenance. Apply Statguard® Floor Finish after 48-72 hours after last coat of paint. Paint becomes dry to the touch, but is not fully cured to accept a finish coat until this time. If you notice the paint color coming off when finishing, it is too soon to apply. Please wait for the paint to cure fully. Ask for Technical Bulletin TB-2088 for more information on Statguard® Floor Finish.
Physical Properties
Type:
Water base acrylic coating
Color:
Grey, Light Grey
Vehicle Type:
Pure acrylic resin waterborne
Pigment Type:
Lead free, iron oxide, titanium dioxide and extenders
Viscosity:
Light Grey 26” #3 Zahn cup Grey 23” #3 Zahn cup
Solids:
Light Grey 24% by volume Grey 20% by volume
Coating Density:
Light Grey 9.54 lbs per gallon Grey 10.27 lbs per gallon (1.0 kilograms per litre)
Gloss:
Light Grey 2 @ 60°F Grey 22 @ 60°F (30 @ 60°C)
Temperature Range:
Wet: 33°F - 110°F (1°C - 43°C) Dry: 33°F - 300°F (1°C - 149°C) (300°F [149°C] not continuous)
3.
Pull the tape off.
Figure 5. Adhesion test on the painted floor.
Electrical Properties
Surface Resistivity:
Apply tape on the precut area.
4.
Examine the degree of paint separation from the concrete.
105 ohms/sq. per ASTM D257
Static Charge Decay:
<0.01 sec. per FTMS 101B, Method 4046
Charge Generation:
Zero per AATCC Step Test, Method 134-1979
RTT:
105 ohms per ANSI ESD-S7.1
RTG:
105 ohms per ANSI ESD-S7.1
Testing
Representative areas should be tested for adhesion and electrical performance of the paint before applying paint to the entire floor. To best ensure consistent results, the test should be done at various locations.
ELECTRICAL PROPERTIES:
Test the surface resistivity, point-to-point resistance, and resistance­to-ground properties of coated area per ANSI ESD-S7.1 test method. For quick and easy verification of the paint’s electrical properties, we recommend the use of our a Surface Resistance Test Kit (Figure
4). For more information contact any of the Desco Industries Inc. companies.
ADHESION:
Allow newly applied paint to dry a minimum of 48 hours before proceeding with the test. At humidity levels over 55% RH, allow 72 hours of drying time before testing. Use a razor to cut a cross or a few perpendicular lines over a 3” by 3” (75 mm by 75 mm) area on several spots of the thoroughly dried area. Use a piece of masking tape to cover the marked area. Make sure the tape is thoroughly adhered to the test area. Pull the tape off the surface and examine the amount of paint which has peeled off during the test. If any significant portion is transferred to the tape, better surface preparation (acid etching, cleaning or sanding) should be done on the substrate to enhance the adhesion.
DESCO INDUSTRIES INC. • 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178 • Fax (909) 627-7449 • Web Site: DescoIndustries.com
TB-7001 Page 3 of 7
© 2009 DESCO INDUSTRIES INC.
Employee Owned
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