upole Innovation30 Sep, 2021 UV radiation and its impact on composite materials Many structures that are made of polymers are susceptible to degradation from the sun’s UV rays. When exposed to UV radiation, the material can become brittle and will blister, and, in the case of fiberglass reinforced polymers (FRP), there can be some delamination of the structure. Delamination of the FRP will greatly reduce its strength, and occasionally material failure can occur. This is a reason for concern when applying FRP to applications such as poles for power distribution. Distribution poles support the weight of power lines, pole-mounted equipment, and linemen for repair and inspection. In addition, the pole resists wind gusts and, in some regions, the additional loads caused by ice storms. A FRP pole that is exposed to direct sunlight may lose its capacity over time to carry these loads and can fail causing downed wires and outages. For this reason, having a distribution pole that is resistant to UV and other environmental threats can help a distribution grid remain robust and reliable over a longer period. Ameron™ Pole Products, a part of NOV, manufactures distribution poles made of a composite material that includes FRP and other components to strengthen and add resiliency during shipping, handling, installation, and operation. In addition, the poles are coated with a UV-resistant material that can withstand the harmful effects of UV radiation. The finish contains a fine sand that gives the pole a rough, easy-to-grip surface which resists abrasion. The UV-coated composite FRP material has been tested in a specialized UVB chamber since 2007. Since then, we have logged over 116,000 hours of testing. Each 1,000 hours of testing is equivalent to one year of exposure to UV during which the sample is subjected to alternating periods of UVB exposure, humidity, and heat. Because of the extensive testing the composite poles have been found capable of withstanding the equivalent of 100+ years without any degradation in material structure, only a slight color fade. Grid hardening objectives are that much more achievable with the proven reliability of composite poles that stand up to environmental dangers. Other benefits of the upole inlude:
Download the upole brochure here If you would like to learn more about our composite poles for please contact Lindsay Taylor on 0400 968 238 or email sales@tengroup.com.au
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