Composite structural element and method of producing the same

Abstract

The present invention provides a composite structural element and a method of producing the same, which includes taking a tape formed by alternatively laminating composite layers made of a non-isotropic composite material and interlayers made of an isotropic material as a major component of the structural element, molding into a structural element of a fixed shape for use in industry, and optionally, directly drilling holes on the laminate of the composite layers and the interlayers for connection.

1 . A composite structural element, comprising:
 an outer portion, comprising a plurality of composite layers and a plurality of interlayers laminated with each other, wherein each of the composite layers has unidirectionally aligned fiber reinforcing materials and a polymeric base material wrapping each of the fiber reinforcing materials, and each of the interlayers is made of an isotropic material being aluminum and is located between any two adjacent ones of the composite layers; and   a plurality of fixing holes respectively passing through each of the composite layers and each of the interlayers;   wherein the thickness of each of the composite layers is between 10 μm and 40 μm, and the thickness of each of the interlayers is between 6 μm and 35 μm.   
     
     
         2 . The composite structural element according to  claim 1 , further comprising an inner portion having a section with an I-shape, an L-shape, a C-shape, or other geometric shapes, located within the outer portion. 
     
     
         3 . The composite structural element according to  claim 2 , wherein the inner portion is a tangible article or a space. 
     
     
         4 . The composite structural element according to  claim 1 , wherein each of the composite layers and each of the interlayers are sequentially alternatively laminated with each other. 
     
     
         5 - 6 . (canceled) 
     
     
         7 . The composite structural element according to  claim 2 , wherein each of the composite layers and each of the interlayers are sequentially alternatively laminated with each other. 
     
     
         8 - 9 . (canceled) 
     
     
         10 . The composite structural element according to  claim 3 , wherein each of the composite layers and each of the interlayers are sequentially alternatively laminated with each other. 
     
     
         11 - 12 . (canceled)