Patent ID: 8449971
Filing Date: 2013-05-28
Classification: B32B,C08G,C08K,C08L,Y10T

Abstract:
1. A composite structure comprising a polymeric matrix and at least one bilayer platelet embedded therein, wherein each of said at least one bilayer platelet comprises a pair of material layers joined to each other and having mismatched coefficients of thermal expansion (CTEs), wherein at least one cavity is present between each of said at least one bilayer platelet and said polymeric matrix in a temperature range within which surfaces of said at least one bilayer platelet have a non-zero curvature, wherein each of said at least one bilayer platelet comprises a low CTE material layer and a high CTE material layer permanently joined to each other by a surface-to-surface contact and having identical planar shapes at an upper end of said temperature range, wherein one of said at least one cavity is located on a center portion of an outer surface of said high CTE material layer, and another of said at least one cavity is located on a peripheral portion of the outer surface of said low CTE material layer.