Large-deformation composite material with flexible cellular structure and preparation method of large-deformation composite material
A composite material and cellular structure technology, applied in the field of flexible cellular structure composite materials and their preparation, can solve the problems of high stiffness of the matrix, difficult to obtain large deformation, easy to fracture, etc., to meet application requirements, good large deformation characteristics, combined with high intensity effect
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[0038] Example 1: as figure 1 As shown, a large deformation flexible cellular structure composite material includes several unit cell rows, and the adjacent unit cell rows are connected by a rigid carbon fiber composite material formed by carbon fiber cloth impregnated with epoxy resin. The unit cell row includes a number of hexagonal unit cell structures and matching concave hexagonal unit cell transition structures, and the hexagonal unit cell structures and the concave hexagonal unit cell transition structures are arranged at intervals in sequence. Among them, the hexagonal unit cell structure is a two-layer structure, and the six cell walls of the inner layer are glass fibers; such as Figure 5 As shown in the figure, the four cell walls to be deformed are impregnated with flexible epoxy resin to form an outer layer, and the remaining two cell walls are impregnated with epoxy resin to form an outer layer.
[0039] Wherein, the flexible epoxy resin includes the following c...
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[0055] Example 2: A large deformation flexible cellular structure composite material, comprising several unit cell rows, and adjacent unit cell rows are connected by a rigid carbon fiber composite material formed by impregnating epoxy resin with carbon fiber cloth. The unit cell row includes a number of hexagonal unit cell structures and matching concave hexagonal unit cell transition structures, and the hexagonal unit cell structures and the concave hexagonal unit cell transition structures are arranged at intervals in sequence. Among them, the hexagonal unit cell structure is a two-layer structure, and the six cell walls of the inner layer are glass fibers; the four cell walls to be deformed are infiltrated with flexible epoxy resin to form the outer layer, and the remaining two cell walls are made of ring The outer layer is formed after the oxygen resin is infiltrated and molded.
[0056] Wherein, the flexible epoxy resin includes the following components, in parts by mass:...
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