在全球范围内，对于具有类似应用和要求的零件，外部涂漆塑料要么在80℃或120℃下涂漆。双组分技术可以在较宽的固化处理窗口内提供良好的性能。与单组分产品相比，耐用性和耐腐蚀性方面的性能优势非常显著。汽车对改善外部塑料装饰部件性能的要求提高了人们对两种部件配方的兴趣。本文将讨论聚氨酯涂料的一些优点。加工聚氨酯涂层需要几个关键的设计元素。将对这些要素进行一般性讨论，并对涂层类型进行比较成本分析。

Globally, exterior painted plastic is either painted at 80C or 120C for parts with similar applications and requirements. Two component technologies can offer good performance with a wide cure processing window. Performance benefits in durability and etch resistance can be significant when compared to their one component counterparts. The automotive requirements to improve performance of the exterior plastic trim components have heightened the interest in two component formulations. This paper will discuss some of the benefits associated with polyurethane coatings. Processing polyurethane coatings requires several key design elements. A general discussion of these elements and comparative cost analysis between coating types will be shared.