Low Temperature Cure Polyester Powder Coating

Low Temperature Cure Physical Properties and Tests:

Cure Schedule, Peak Metal temperature:	30 minutes substrate temperature at 250 degrees F
	25 minutes substrate temperature at 300 degrees F
Specific gravity:	1.42 to 1.76 g/cm3, varies by color
Film Thickness:	2.5 to 4.0 mils
Specular Gloss Values:	5 to 80 - Using a 60 degree gloss meter per ASTM D 523
Impact Resistance	ASTM D 2784	Pass - 60 in/lbs.
Mandrel Bend	ASTM D 522	Pass - 0.25 inch
Crosshatch Adhesion	ASTM D 3359-B	Pass – 5B with no removal
Pencil Hardness	ASTM D 3363	Pass – > 2H
Surface appearance	PCI Smoothness Panels	4
Chemical Resistance	MIL-H-83282 Fluid Immersion 24 hrs.	Delta pencil #2
	MIL-H-5606 Fluid Immersion 24 hrs.	Delta pencil #2
	MEK Double Rub ASTM D5402	Double rubs – 25
Weathering	Xenon Arc 500 hrs ASTM G26-96	DE Gloss - <10
		DE Color - <1
Corrosion Resistance	ASTM B 117	Pass - 2,000 hours
	ASTM G 85	SO2 500 hrs. Scribe Undercut rating – 7
	Cyclic on scribed steel GM 9540P	Cycles to failure – 80
	Filiform ASTM 2803-93	Pass - <0.25 inch
Humidity resistance	ATM D 2247-94	Pass - 2,000 hours

Disclaimer:

We urge you to consult with Crosslink and to perform your own tests to determine the suitability of this product for your particular purposes. The information contained herein is to the best of our knowledge, and is not intended to be exhaustive. It is intended to inform users of the general criteria regarding this coating. We have no control over either the quality or condition of the substrate, the processes of pretreat, application, or curing, or the many factors affecting the use, application or final installed environment of the coated product. We make no guarantee of results, and assume no liability for damages incurred by following these suggestions, or for misuse. We do not accept any liability whatsoever or howsoever arising from the performance of the product or for any loss or damage arising out of the use of the product. Any product liability shall be incurred in writing only. The information contained in this sheet is subject to modification from time to time due to experience and continuous product development.

Metal Preparation and Pretreatment:

A multi stage cleaning and pretreatment system is required to prepare the substrate. A properly operating pretreat system will remove organic and inorganic surface soils, remove residual oxides, and apply a chemical conversion coating to which organic coatings will adhere. Pretreat chemical conversion solutions and rinses should utilize high purity water, and may be of chrome containing conversion, or non-chrome conversion chemistries. Applicator pretreat solutions and processes must comply with the chemical supplier’s procedures and guidelines. Frequent in-plant testing and control of pretreatment is required to insure satisfactory performance of the coating system.

Alternately, abrasive blasting is a process used to remove mill scale, old coatings, and oxides from ferrous and non-ferrous metals, and to profile non-metallic surfaces. Chemical surface preparation may follow the blast procedure.

Careful analysis is required to establish the appropriate pretreatment process.

Application:

Low Temperature Cure Powder Coatings are designed for application by electrostatic spray – manual or automatic. Reclaim is acceptable, provided there is no incident of cross-contamination. When applying Powder Low Temperature Cure Powder Coatings, some experimentation is typical with regard to gun kV settings and air velocities to maximize transfer efficiency and achieve a consistent coating thickness.

Curing by different means of thermal energy:

• Convection
• Radiation
• Induction

Oven profiling is required to evaluate the cure process.

Precautions:

All dusts are respiratory irritants. The coating area must be properly ventilated. If skin contact occurs, wash with mild, soapy water. If eye contact occurs, flush with water immediately and secure medical attention. Dust clouds of any finely divided organic material can be ignited by electrical sparks or open flames. All equipment must be electrically grounded to preclude buildup of static electricity. Ensure adequate oven ventilation when curing this product. See MSDS for further precautions.

Storage Stability:

Powder coatings are hygroscopic in nature. Store containers in a cool, dry place not exceeding 75 OF at 50% relative humidity. Keep containers closed during storage to prevent contamination.

This technology was developed in conjunction with SERDP Project PP-1268, in concert with GE-Global Research and agencies of the Department of Defense.