Quick Answer
Paracord can withstand moderate UV exposure for a short term, but long-term exposure can lead to degradation of the nylon sheath and inner core.
UV Resistance of Paracord
Paracord is made from nylon, a material that is generally resistant to UV radiation. However, prolonged exposure to direct sunlight can cause the nylon sheath to degrade, leading to a loss of flexibility and eventual breakage. The rate of degradation depends on several factors, including the type of nylon used, the thickness of the sheath, and the amount of exposure.
Measuring UV Degradation
Studies have shown that paracord subjected to 1000 hours of UV exposure at 350 nm (a typical wavelength for outdoor sunlight) can lose up to 50% of its strength. In practice, this means that a 10-foot paracord rope may break when subjected to a load of 100 pounds after only 12 months of daily exposure to direct sunlight.
Strategies for Mitigating UV Degradation
To reduce the impact of UV degradation, it’s essential to use strategies for minimizing exposure. First, store paracord in a cool, shaded area when not in use. Second, apply a UV-blocking coating or wax to the paracord to protect it from direct sunlight. Finally, consider choosing paracord with a thicker sheath or a more resistant nylon material, such as Kevlar or Dyneema.
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