Tech Info / HIREC® Shows High Durability in Outdoor Exposure Test
HIREC®: Super Hydrophobic Coating for Antenna, Radome and Other Public Infrastructure
HIREC® - Outdoor Exposure Test
The long term stability of HIREC® water repellency was directly measured by outdoor exposure test. The HIREC® coated plates were exposed in the field and the change in contact angle was measured. The contact angle of HIREC® after 1100 days outdoor exposure was 143 ° and showed very stable water repellency during 3 years.
Measurement Conditions
Sample facing direction :
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South |
Sample angle :
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45 ° |
Location :
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Tokyo, Japan |
Degrees of latitude:
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35 ° |
Annual sunshine in hours:
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1780 hours |
Annual rainfall:
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1500 mm |
Exposure time :
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3 years |
Results of Outdoor Exposure Test
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HIREC® shows no abnormality during 1100 days or 3 years exposure in the field.
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Initial contact angle of HIREC® was 152°. |
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The contact angle after 1100 days of outdoor exposure was 143° |
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The contact angle was stable during the outdoor exposure test. |
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HIREC® maintains remarkable water repellency in outdoor usage for 3 years.
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