NDF. Non Degrading Flakes

Transcription

1 NDF Non Degrading Flakes

2 Shear Stability Description & General Information Shear Stability is described as the property of a pigment flake to retain structure, color, brightness and flop when exposed to a high shear situation. When pigments are exposed to high shear forces, such as in paint recirculation systems, they can experience physical damage to the flake perimeter, and in worst cases fractures the flake, which results in an appearance change usually observed as a change in color, brightness and flop. NDF pigments are designed specifically to provide increased shear stability versus traditional Cornflake and Silverdollar flakes while providing excellent brightness, flop, sparkle and colour stability NDF s are thicker than a traditional flake NDF s come in a variety of particle sizes (d50 of 10µm up to 34µ) Shear stability is a concern in the Automotive and Coil Coatings Industries, and markets where paint is exposed to high shear. ECKART America has more than 10 years experience manufacturing NDF pigments Shear Stability is influenced by several factors Pigment Structure / Morphology Paint System water versus solvent Application System Pumps, recirculation system Laboratory Test Methods are used to simulate the shear in Automotive OEM paint recirculation systems (e.g. Waring Blender Test). Conventional Flake NDF SEM SEM cross section polish cross section polish

3 Shear Stress Stability Comparison Silver Dollar NDF in coating: Shear stability L* L* Silver Dollar unsheared Silver Dollar sheared NDF unsheared NDF sheared NDF Grade Particle size d50 Characteristics NDF 120 fine 12 fine pigment with semi-degrading properties NDF 150 medium fine 15 medium fine pigment with semi-degrading properties NDF 170 medium 18 medium pigment with non-degrading properties NDF 200 medium coarse 20 medium coarse pigment with semi-degrading properties NDF 3120 fine 12 fine non-degrading pigment very bright with excellent travel and flop NDF 3150 medium fine 15 medium fine semi-degrading pigment very bright with excellent travel and flop NDF 3200 medium coarse 20 medium pigment with semi-degrading properties very bright with excellent travel and flop

4 Pigment Characteristics/Morphologies (Aspect Ratio) NDF s are significantly thicker compared to traditional pigments The thicker pigment provides increased shear stability of the edges Increase shear stability means that the pigment will not lose brightness and flop during high stress applications (automotive recirculation system / coil applications Aspect Ratio D D T T Better shear stability Better Coverage and Hiding power

5 NDF 3000 New Product Series NDF 3000 Narrower Particle Size Distribution NDF120 NDF 3120 NDF120 NDF 3125 NDF150 NDF Microns

6 Comparison of Flake Types Cornflake, Silver Dollar, and NDF Flake Technologies (SEM pictures) Cornflake NDF Silver Dollar

7 Product Series NDF 3000 Summary NDF microns Fine non-degrading pigment - very bright with excellent travel and flop NDF microns Fine non-degrading pigment - very bright with excellent travel and flop. Slightly larger particle size distribution than NDF Significant color difference versus NDF 3120 NDF microns Medium fine semi-degrading pigment - very bright with excellent travel and flop NDF Non-Degrading Flakes have significantly better shear resistance than traditional silver dollar or cornflake pigments NDF pigments have excellent shear resistance in all type of paint systems (water or solvent, either low solid or high solid) NDF is available in a wide variety of particle sizes NDF 3000 finer, brighter and allows for development of new color space NDF Non Degrading Flake offers the solution! Superior shear stability, unique color position with excellent brightness, color stability and flop.

8 ECKART GmbH Plant Guentersthal Velden Germany Tel.: Fax: info.eckart@altana.com With compliments ECKART America Corporation 4101 Camp Ground Road Louisville Kentucky USA Tel: Fax: Toll-free: info.eckart.america.ky@altana.com 2/August CO USA 80536zz This information and our technical advice whether verbal, in writing or by way of trials are given in good faith but without warranty, and this also applies where proprietary rights of third parties are involved. Our advice does not release you from the obligation to verify the information currently provided especially that contained in our safety data and technical information sheets and to test our products as to their suitability for the intended processes and uses. The application, use and processing of our products and the prod ucts manu factured by you on the basis of our technical advice are beyond our control and, there fore, entirely your own responsibility.