acrylic based polyurethane coatings
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The degradation of two coatings systems based on polyurethane and acrylic were studied by exposed in UV-condensation chamber and salt-fog chamber alternately.
采用盐雾和紫外-冷凝室内人工加速老化循环试验的方法，对聚氨酯和丙烯酸两种典型的船壳涂料进行人工加速老化试验。
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