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Our coated steel panels have successfully
gone through 5,000 hours of Salt Fog Exposure (ASTM
B 117) and Cyclic Weathering (ASTM
D 5894) tests, and our coated aluminum panels have gone through
over 3,000 hours. 5,000 hour is the maximum testing hours
range under ASTM B 117 standard. Tests on aluminum panels with
longer period of time are still under way. We will update this
page once new test results have been received.
Tensile adhesion (pull-off strength) was
measured in accordance with ASTM
D 4541, "Standard Test Method for Pull-Off Strength of
Coatings Using Portable Adhesion Testers," Annex A4, "Self-Aligning
Adhesion Tester Type IV." Adhesion Strength Tests are performed
following 1,100 Hours of Cyclic Weathering.
All our tests and result data used below
are provided by KTA-Tator, an American Association for Laboratory
Accreditation (A2LA)
approved Independent testing lab with over 60 years of experiences.
It's located in Pittsburgh Pennsylvania U.S.A.
Panel Preparation Method
The panels (3'' x 6'') were scribed on
the coated side by the testing company with a single incision
down the center (lengthwise) of each panel, extending to approximately
one inch from the edges. The scribing tool used was a tungsten
carbide thread cutting lathe tool bit with a cutting tip having
a 60° included angle as described in ASTM D 1654, "Standard
Test Method for Evaluation of Painted or Coated Specimens Subjected
to Corrosive Environments." The backsides were coated with
a material provided by the testing company, and the edges of each
panel were protected from edge effects with vinyl tape.
Results
Blistering and rusting are rated on a
scale of 0 to 10. A "10" indicates no blistering
or rusting or less than 0.01% of rust observed. Subsequential
ratings indicate progressively larger blisters or rusted areas.
Blistering is additionally rated according to frequency (Few,
Medium, Medium Dense, Dense). Rusting is additionally rated according
to type: Pinpoint, General, or Spot rusting. Undercutting is the
distance of corrosion creep extending from the scribe line (visual
determination only).
| Test Name |
Hours |
Metal
|
Blistering |
Rusting |
Undercutting |
| Salt Spray Exposure |
5,000 |
Steel
|
10
|
10
|
<1 mm
|
| Salt Spray Exposure |
3,000 |
Aluminum
|
10
|
10
|
<1-1mm
|
| Cyclic Weathering |
5,000 |
Steel
|
10
|
10
|
4 mm
|
| Cyclic Weathering |
3,000 |
Aluminum
|
10
|
10
|
0-1 mm
|
For the adhesion test, the force (in psi)
required to remove each pull-stub was recorded along with the
location of break and approximate percentage of each. The location
of break is defined as adhesive (a split between layers), cohesive
(within a layer), or glue failure (coating strength exceeds glue
strength). Good Painting Practices (by SSPC) says 200 psi
or better is considered good adhesion. Our results of 700-800
psi range would be considered good or very good. The results of
the testing can be found in the table below.
|
ID
|
Pull Stub
|
Pull-Off Strength (psi)
|
Location of Break
|
Average Pull-Off Strength
|
|
1
|
A
|
611
|
100% cohesive failure within primer
|
652 psi
|
|
B
|
734
|
80% cohesive failure within primer, 20%
glue failure
|
|
C
|
611
|
100% cohesive failure within primer
|
|
2
|
A
|
673
|
80% cohesive failure within primer, 20%
glue failure
|
812 psi
|
|
B
|
1009
|
100% cohesive failure within primer
|
|
C
|
754
|
30% cohesive failure within primer, 70%
glue failure
|
|
3
|
A
|
815
|
70% cohesive failure within primer, 30%
glue failure
|
849 psi
|
|
B
|
877
|
90% cohesive failure within primer, 10%
glue failure
|
|
C
|
856
|
100% cohesive failure within primer
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Photographs
Below are pictures of sample panels taken
after the tests. Click images to see enlarged views.
Salt Fog Exposure & Cyclic Weathering
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|

|
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Salt Fog Exposure (ASTM B 117)
on coated cold roll steel (CRS) panel after 5,000
hours exposure. The incision line area was scraped before
picture taking.
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Salt Fog Exposure (ASTM B 117) on
coated cold roll steel (CRS) panel after 1,000 hours
exposure. Scraped afterward. The incision line area was
scraped before picture taking.
|
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|

|
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Salt Fog Exposure (ASTM B 117)
on coated cold roll steel (CRS) panel after 2,000
hours exposure. The incision line area was scraped before
picture taking.
|
Salt Fog Exposure (ASTM B 117) on
coated cold roll steel (CRS) panel after 2,000 hours
exposure, before being scraped .
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|

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|
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Salt Fog Exposure (ASTM B 117) on
coated aluminum panel after 3,000 hours exposure.
The brown sparkles are rust splashed from steel panels.
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Cyclic Weathering (ASTM D 5894)
on coated aluminum panel after 3,000 hours exposure.
The brown sparkles are rust splashed from steel panels.
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Adhesion Tests
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|

|
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1) ASTM D 4541: 652 psi
average after 1,100 hrs of cyclic weathering test
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2) ASTM D 4541: 812 psi average
after 1,100 hrs of cyclic weathering test
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Our Environment-Friendly Anti-Corrosion
Coating Technology
|
Conducing polymer can be used as
corrosion inhibitor was stated in 2000 Nobel Chemistry Award.
In the past couple decades, many companies and organizations
have tried to develop conductive polymer as a heavy-metal
free and "smart" anti-corrosion pigments, and
hundreds of patens have been filed on this topic, but no
commercial product that can pass rigors corrosion test such
as salt fog exposure. Recently, AnCatt Inc. utilized new
concept combining with our
unique conducting polymer dispersion eventually brought
this dream into reality. Our coatings have successfully
gone through maxium hours of Salt Fog Exposure test under
ASTM B 117 specification with no appearance of rust or blister.
(see above for detailed lab data and photo)
|
We are introducing the Environmentally
Friendly High Performance Anti-corrosion Coating Technology,
which does not employ conventional toxic/carcinogenic heavy-metal
anti-corrosion pigments such as chromates and lead compounds,
not even less toxic but sacrificial zinc/zinc
compounds while providing heavy-duty corrosion protections
to a wide range of metals besides iron/steel, such as zinc and
aluminum. Our technology provides an excellent solution to the
urgent needs of Hexavalent
Chromium-free anti-corrosion coatings for aluminum and its
alloys. For steels, our technology provides a smarter solution
with higher effectiveness, friendlier to the environment, scratch
tolerant, lower cost, and much longer performance life. If you
would like to test our anti-corrosion technology, please contact
us to request coated sample panels. Currently we are seeking
partners to licensing/commercialize this new technology. Read
more about the features, specifications, and usages of this coating
technology.
If you are interested in our anti-corrosion
technologies or having questions/comments, please Contact
Us.
Send Us a Message
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