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Description of Autophoretic®
Performance Characteristics
Performance Comparison
Autophoretic® 900 Coatings

 

 

 

Henkel Surface Technologies
Autophoretic® 915 Coatings

The benefits of the new Autophoretic® 915 Technology include:

  • Environmentally friendly - no heavy metals anywhere in the line, very low VOC (<0.3 lbs./gal.). no solvent side-additions

  • Low maintenance requirements - no ultrafiltration, no rectifiers and electrodes, no phosphate stages

  • Process application advantages:

    • Excellent throwing (wetting) power with uniform coverage

    • No electrical contacts required

    • Coat fully assembled parts

    • Inside arid outside part protection

    • Lower total applied costs

  • Excellent physical properties of the dried film:

    • Uniform moderate gloss appearance

    • Topcoat ability

    • Heat stability and impact resistance

    • Scratch and mar resistance

  • No special rack stripping requirements:

    • No electrical contacts required

    • Lower stripping labor, disposal and energy costs

Performance Characteristics

Test Autophoretic® 915 Process
Film thickness (mils) 0.6 - 1.0
Pencil hardness 2 - 3H
Gloss @ 20° 40-60
T-bend 1T - 2T
Reverse Impact 160 in./lbs. (0.5-0.7mils)
Cross hatch adhesion No failure
Humidity (240 hours)  No failure
GM 9540P Scribe (40 cycles) <3mm
SAE J2334 Scribe (40 cycles) <3mm
Neutral salt spray

Scribe (3mm creep)
No scribe (<10% rust)

 

336-500 hours
1000 hours

Cure temperature 365°F
Heat Stability (400°F for 2hrs, then reverse impact)
160 in./lbs.
VOC (EPA reference method 24) as supplies
<0.3 lbs./gal.

Introducing the 900 Series Autophoretic®

Autodeposition is a waterborne process that depends an chemical reactions to achieve deposition. This process has been in commercial use since 1975.Since then, autodeposition has grown and matured. Since its inception, this unique process has been employed to coat over billions of square feet of surface.

An autodeposition bath consists of a mildly acidic latex emulsion polymer, DI water. and other proprietary ingredients, The bath solids are normally between 4% and 6% by weight, The bath viscosity is close to that of water with little or no organic solvents In the coating bath The continuous formation of coating provides a film with a high degree of surface protection and corrosion resistance.

The coating thickness of the autodeposited film is time and temperature related. The film thickness continues to grow as long as ionic species are being produced at the coating/metal interface. Initially, the deposition process is quite rapid, but slows down as the film increases in thickness. Typically, film thickness is controlled from 0.6 to 1.0 mill.

A unique feature of the autodeposition process is the formation of a very uniform film over the entire surface of the workpiece, even in difficult to-reach areas. This allows the coating dispersion to flow into and around the most complex shapes. Unlike coating processes that require a charge to deposit the coating (i.e., where electrical energy is required to 'throw" the coating into recessed areas) autodeposition will coat tubular, assembled, or intricate-design areas uniformly. Autodeposition coating film thickness is controlled by diffusion of reactants in the bath and through the coating already formed on the surface of the substrate. This diffusion control leads to a uniform coating thickness on complex shapes and In recessed areas.

It should also be mentioned that the autodeposition process does not require a chemical conversion coating. The elimination of these stages leads to considerable savings in required floor space, energy, and operating costs, as well as the total elimination of toxic metals from the process. Considerably lower temperatures are required to cure the autodeposited parts. These are just some of the many advantages of using the autodeposition process. Current technology includes the Autophoretic® 700 Series Coatings based on an acrylic polymer technology, and the Autophoretic® 800 Series Coatings based on PVDC polymers.

Henkel Surface Technologies is now introducing a completely new, advanced polymer coating, the Autophoretic® 900 Sodas Proem. This new coating is the result of many years of focused product development. It offers new and unique performance characteristics, while maintaining and enhancing the principles that gave autodeposition its unique position in the marketplace: ease of operation, environmental compliance, and reduced equipment stages.

The new Autophoretic® 900 Series coatings provide a high gloss surface with uniform appearance for those applications where visual appeal is Important, it provides high temperature stability and it can also be used with a wide variety of topcoats to provide the finish that your customers want