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Accelerated
Weathering and Durability
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Our
products have been tested to guidelines described in ASTM .G53-88
Standard Practice for Operating Light and Water Exposure Apparatus
(Fluorescent UV –Condensation Type) for
Exposure of Nonmetallic Materials.
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Test
Findings 
Charts
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The Accelerated Weathering and Durability Test |
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The
most recent set of accelerated weathering tests were conducted in
an Atlas UVCon Ultra Violet / Condensation Exposure Cabinet
MII.
This machine continuously cycles through extreme weather simulated
conditions, i.e., UV radiation and elevated temperature and moisture
condensation.
This test is widely used in the coatings industry to assess durability
of exterior coatings.
Nawkaw had this testing regime extended to simulate 25 years
of continuous exposure on a vertical wall.
At the end of its accelerated weathering exposure testing, the samples
are examined for integrity and colour fastness.
The results of these tests from our most recent set of exposure
tests are shown pictorially:
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Red |
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| Unexposed |
Exposed |
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The
sample on the left was exposed to no weathering while the one on the
right withstood an equivalent of 25 years exposure to sunlight on
a vertical wall in the accelerated testing apparatus.
Date of test - October 2000
Testing Facility - Bodycote Materials Testing Inc. - Toronto Canada
UV Radiation cycle 16 hours @ 60 degrees C
Condensation cycle 8 hours @ 50 degrees C
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Black |
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| Unexposed |
Exposed |
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The
sample on the left was exposed to no weathering while the one on the
right withstood an equivalent of 25 years exposure to sunlight on
a vertical wall in the accelerated testing apparatus.
Date of test - October 2000.
Testing Facility - Bodycote Materials Testing Inc. Toronto Canada.
UV Radiation cycle 16 hours @ 60 degrees C
Condensation cycle 8 hours @ 50 degrees C
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Yellow |
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| Unexposed |
Exposed |
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The
sample on the left was exposed to no weathering while the one on the
right withstood an equivalent of 25 years exposure to sunlight on
a vertical wall in the accelerated testing apparatus.
Date of test - October 2000
Testing Facility - Bodycote Materials Testing Inc. Toronto Canada.
UV Radiation cycle 16 hours @ 60 degrees C
Condensation cycle 8 hours @ 50 degrees C
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White |
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| Unexposed |
Exposed |
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The
sample on the left was exposed to no weathering whilst the one on
the right withstood an equivalent of 25 years exposure to sunlight
on a vertical wall in the accelerated testing apparatus.
Date of test - October 2000.
Testing Facility- Bodycote Materials Testing Inc. Toronto Canada.
UV Radiation cycle 16 hours @ 60 degrees C
Condensation cycle 8 hours @ 50 degrees C
Nawkaw
recognizes the need to produce and apply superior products to meet
the highest standards to the continuing benefit of our customers and
the community.
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