Performances of Ultra durable weathering WINUP coat
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Weathering resistance*
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Initial gloss
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87
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Gloss after 480 hrs
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59
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Color difference after 480 hrs
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1.2
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*Examined with Super UV weathering test system using acrylic resin sheets
Test condition is the periodic procedure of UV irradiation (4hr) - high temperature and humidity (4hr) - room temperature and high humidity (4hr)
The results after 480 hrs are roughly equivalent to 4 years' nutural exposure
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Gloss retention *
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Sand rubbing (40 cycles)**
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100 -->58
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Steel wool rubbing (20 cycles) ***
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105 -->96
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*Measured at 60゜angle before and after reciprocating a weight or a hand with steel wool
**Sand is laid on the coat and the weight that gives the same pressure as an average man is reciprocated on the sand
*** A hand with #1 steel wool is reciprocated on the coat
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Stain resistance
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Black marker
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A
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Red ink
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A
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Povidone iodine
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A
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Hypo alcohol
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A
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Heat degraded fat
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A
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Hair dye
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B(A) **
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Methyl alcohol
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A
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* Contaminants are put on the coat and are wiped up after being kept for 3 hrs at room temperature
** (A) shows the result after buffing with Buffer B
