Color-changing adhesive composition

The present disclosure relates to a color-changing adhesive composition, for example, a color-changing adhesive composition suitable in the preparation of composite materials. The present disclosure also relates to methods of preparing composite materials using the color-changing adhesive compositions and to composite-materials comprising the color-changing compositions. In certain embodiments, the present disclosure provides the color-changing adhesive compositions having an initial color, wherein the adhesive composition is capable of changing color to a final color, different from the initial color, once the adhesive compositions contact a curing composition comprising one or more curing agents. In certain embodiments, the final color is colorless. 本公开涉及种变色粘合剂组合物，例如，适于制备复合材料的变色粘合剂组合物。本公开还涉及使用变色粘合剂组合物制备复合材料的方法并且涉及包含此类变色组合物的复合材料。在某些实施方案中，本公开提供具有初始颜色的变色粘合剂组合物，其中当该粘合剂组合物接触包含种或多种固化剂的固化组合物，该粘合剂组合物能够将颜色改变至与初始颜色不同的最终颜色。在某些实施方案中，该最终颜色是无色的。