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What makes colors fade in plastics? What part or parts of the light spectum?

April 26, 2017colors fade light plastics spectum

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What makes colors fade in plastics? What part or parts of the light spectum?

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A precise answer would depend on detailed properties of the material, but it is probably fairly reasonable to say that any of the wavelengths absorbed by the material will contribute to its fading. Thus, the wavelengths most strongly absorbed are probably doing the most relative damage.