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RHINO Coating - Technical Data Sheet

VIEWS: 5 PAGES: 6

									Integrity Coatings, Incorporated     RHINO Coating      Revision Date: January 18, 2008




                               TECHNICAL DATA SHEET


Integrity Coatings, Incorporated
10231 Yorktown Lane
Maple Grove, MN 55369-2852 USA
www.integritycoatingsusa.com
marty@integritycoatingsusa.com
(763) 242-7240


1. General Description

The RHINO Coating is a patented organometallic coating that is produced and
distributed exclusively by Integrity Coatings.

What makes the RHINO Coating unusual is that it provides a unique balance of superior
properties. Among its more notable features, the RHINO Coating exhibits superior
scratch resistance. The RHINO Coating also features strong antistatic and electric
shielding properties. Furthermore, subsequently applied antireflective coatings of
various types tenaciously adhere to the RHINO Coating without the use of hot, highly
alkaline, caustic cleaning solutions and ultrasonics for surface preparation. This is
because the RHINO Coating readily reacts with various types of antireflective coatings
via a selfcatalyzed reaction to form strong covalent bonds to the antireflective coating.
The inprocess management of the RHINO Coating is relatively easy by virtue of the fact
that the RHINO Coating is stable in solution and contains only one organic solvent. The
RHINO Coating may not require a primer on some substrates for which the RHINO
Coating is selfpriming, such as various cast lens materials of assorted refractive indices,
polycarbonate, acrylic polymers, polyurethane, polyamide, aluminum, stainless steel,
and other materials.

Possible applications for the RHINO Coating include ophthalmic lenses, sport visors,
compact discs, semaphore lenses, computer monitors, television screens, touch
screens, windshields, aircraft windows, cell phone lenses, and other applications where
a highly mar resistant, transparent coating is required. There is a broad area within
which the RHINO Coating formula can be modified to render it more suitable for a
specific application.




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Integrity Coatings, Incorporated      RHINO Coating     Revision Date: January 18, 2008


2. Typical Solution Properties

Appearance: clear, colorless liquid
Density: 0.9 grams per milliliter
Viscosity: 1 centipoise
Weight Percent Nonvolatiles: 20
Volume Percent Volatiles: 15
pH: 12


3. Chemical Composition

The nonvolatile constituents are metal alkoxides, or their derivatives, and comprise
about twenty weight percent of the coating. Methanol is the only organic solvent and is
present at a concentration of about 70 percent by weight. Water is the only other volatile
constituent and is present at a concentration of about 10 percent by weight. These
values will need to be maintained during processing when using a dip tank over an
extended period of time.


4. Safety Information

Since this coating contains methanol, a poisonous material, care must be taken to avoid
exposure via ingestion, absorption, or inhalation. When handling the RHINO Coating,
such as when transferring this coating solution from one container to another, a face
shield, rubber gloves, respirator with organic vapor cartridges, and an apron of material
that is impervious to methanol should be worn. Safety glasses must be worn at all
times.

The RHINO Coating is flammable due to the methanol that it contains. The flash point of
this coating is approximately 52F (11C), hence, this coating should be used with
adequate ventilation and away from ignition sources.

Please read the Material Safety Data Sheet for this product to obtain additional safety
information.


5. Storage Conditions

Generally, it is preferred that the RHINO Coating be stored at 40F (5C) or below to
prevent a change in properties, although it may be stored for two months at room
temperature, or at slightly elevated temperatures for shorter times. When not in use, the
dip tank should be kept covered, the circulation, cooling, and dehumidification
equipment should remain on at all times.




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Integrity Coatings, Incorporated     RHINO Coating      Revision Date: January 18, 2008


6. Surface Preparation

Prior to applying the RHINO Coating, ideally, the surface that is to be coated should be
free of all dust, dirt, fibers, oils, mold release, mineral deposits, detergent residue,
water, and any other contamination, especially low surface energy materials that could
interfere with adhesion. Suitable means of cleaning include deionizing air, vapor
degreasing, heated high pH aqueous detergent solutions in conjunction with ultrasonics,
supercritical carbon dioxide, and other means.

Subsequent to cleaning and drying, the substrate may also require some type of
pretreatment prior to the application of the RHINO Coating. The best method of
pretreatment will largely be determined by a careful consideration of the composition of
the substrate and the required performance properties for the cured coating. Suitable
pretreatments may include some combination of primers, chemical etching, and other
techniques.


7. Application Method

The RHINO Coating may be applied by dipping, spinning, flowing, and possibly
spraying. The suitability of a particular application technique will in large part depend
upon the geometry of the article that is to be coated and the cosmetic requirements.
There is great latitude in the coating application temperature, although, for dip
applications, a slightly reduced coating application temperature of approximately 60F
(15C) is recommended to reduce evaporative losses. The temperature, dew point, and
relative humidity of the ambient air should be approximately 75F (25C), 30F (0C),
and 30 percent, respectively. The flash time, the time between application and starting
precure, should be about 10 seconds, but between 0 and 30 seconds, depending upon
the application conditions, application method, and method of precure.


8. Curing Technique

Even though the RHINO Coating is fairly stable in solution, it cures very rapidly and may
be cured via a variety of means. Normally, the RHINO Coating should be precured to a
tack free state immediately after application. This may be done by any one of several
possible means such as with an infrared or ultraviolet light source. Another suitable
method of precure involves placing the lenses in an oven at approximately 180F (80C)
for about fifteen minutes prior to curing at higher temperatures. Maximum properties can
be obtained by curing for four hours at 265F (130C) in an electric forced air oven or in
a vapor curing oven. However, the RHINO Coating will cure well at lower temperatures
and shorter times to provide excellent properties. For example, a Bayer ratio of about 4
can be obtained in an hour at approximately 210F (100C). The RHINO Coating will
cure much faster at lower temperatures than other thermally cured coatings under the
same conditions. In your current process, the RHINO Coating will almost certainly
provide better properties than the coating that you are presently using. The substrate


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Integrity Coatings, Incorporated     RHINO Coating      Revision Date: January 18, 2008


and the required properties for a particular application will determine the time and
temperature that are required for cure. Following a short precure, the tack free coating
may be inspected and, should a defect be found, the coating may be readily removed
by washing with methanol, some other alcohol, or other means before recoating.


9. Typical Cured Film Properties

The following values can be obtained on clean, unprimed bisphenol A polycarbonate
when the RHINO Coating is properly applied, fully cured, and tested using specific
equipment under proper conditions.

Coating Thickness: 5 microns
Percent Haze: 0.2
Refractive Index: 1.53
Total Light Transmission: 90 percent
Yellowness Index: 0.5
Bayer Ratio: 6
Steel Wool Rating: 5
Post Tint Total Light Transmission: 80 percent

It should be noted that while the above values are not unusual for this coating, the
actual test results that are obtained will depend upon the substrate, the test method, the
test conditions, the test equipment, the condition of the test specimen, the dry film
thickness of the coating, as well as how the coating was applied and cured.


10. Troubleshooting Guide

Here are a few of the more common defects that can be encountered in applying
coatings and some of the more common causes of each.

Adhesive Failure: improperly prepared substrate
                  contaminated coating
                  insufficient cure time
                  insufficient cure temperature

Bubbles: loose connections in the coating circulation system so as to allow air intake
         turbulence in the dip tank
         excessive flow over the weir
         excessive back pressure at the filter
         cavitation at the pump
         low coating level starving the pump
         air being carried into the coating solution by the parts that are being coated
         excessive flash temperature




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Integrity Coatings, Incorporated       RHINO Coating       Revision Date: January 18, 2008


Crawling: improper surface preparation
          contaminated coating
          excessive flashtime
          excessive airflow

Crazing: excessive coating thickness
         excessive cure temperature
         release of stress internal to the part during cure
         release or internal stress by ultrasonics in a heated detergent bath

Haze: high ambient humidity
      excessive water contamination
      low methanol concentration
      excessive flash temperature
      insufficient flash time
      contaminated coating solution
      overly aggressive etching during surface preparation
      wet parts

Orange Peel: excessive flash temperature
             contaminated coating
             excessive air flow over the freshly coated parts

Particles: inadequate cleaning
           poor air quality
           low circulation rate
           improper filters
           insufficient drying of parts prior to coating application

Runs: excessive coating thickness
      improper orientation of substrate immediately after application

Yellowing: excessive cure time
           excessive cure temperature
           contaminated coating solution
           poorly cleaned substrate
           contaminated equipment
           old coating solution


No warranties of any kind are hereby expressed or implied. The information that is
contained in this document is not intended to be a warranty as to the suitability of the
RHINO Coating for any particular purpose nor is it a warranty of the performance
properties of the cured film. The values disclosed herein are typical values only and
may differ from what is actually obtained in any particular situation due to differences in
the equipment, materials, and conditions that are used for processing as well as testing.



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Integrity Coatings, Incorporated      RHINO Coating       Revision Date: January 18, 2008


It is the responsibility of the user to determine the suitability of the RHINO Coating for
any particular purpose. Integrity Coatings is not responsible for any loss, damage, or
other harm due to either the use or the misuse of the RHINO Coating.




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