COMPOSITE TUBE AND MANUFACTURE

摘要

PURPOSE: To enhance buckling load capacity, impact resistance and shaping properties by forming a tube from a composite containing at least one layer of a specific prepreg structure and at least one layer of a membrane of a specific syntactic foam. CONSTITUTION: A tubular composite contains at least one layer of a tubular prepreg structure 3 of anisotropic matched high modulus continuous filaments impregnated with a thermosetting resin constituting the outer wall of a tube and having a side surface matched in the axial direction of the tube and at least one layer of a uniform thickness isotropic membrane 5 of syntactic foam containing rigid microballoons uniformly dispersed in a resin matrix chemically bonded through the other prepreg chemically bonded to the prepreg structure in the tube. The membrane 5 of the syntactic foam containing rigid microballoons in the resin matrix is provided at the position sufficiently near to the surface of the interior 7 of the tube. This arrangement is more effective in the enhancement of buckling load capacity, bending rigidity and impact resistance.