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What climate conditions accelerate degradation of polyethylene in desert sculptures?
Polyethylene, a common material used in desert sculptures, degrades faster under harsh desert climate conditions. Intense ultraviolet (UV) radiation breaks down polymer chains, leading to brittleness and cracking. Extreme temperature fluctuations cause thermal oxidation, weakening the material's structural integrity. Additionally, abrasive sand particles carried by wind erode the surface, further accelerating wear. Low humidity and prolonged heat exposure also contribute to the loss of plasticizers, making polyethylene more prone to fragmentation. Understanding these factors helps in designing more durable artworks for arid environments.
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