A double-helix fiber-reinforced foam laminate

Abstract

The invention discloses a double-helix fiber-reinforced foam laminated board, which is mainly composed of a surface metal plate and a fiber-reinforced foam core layer, the fiber-reinforced foam core layer is arranged between two metal plates; Composite with a foam matrix; the foam matrix is ​​a porous resin material filled with hollow glass microspheres; the double-helix fibers are obtained from natural plant fibers, nylon or copper fibers through fiber weaving or fiber winding; the filling amount of double-helix fibers accounts for 10%-40% of the total volume of the foam core layer, the length of the double-helix fibers is 0.5-10mm; the fiber-reinforced foam core layer is stirred and mixed with the raw materials of the foam matrix and poured into the mold with the double-helix fibers arranged in advance and cured get. The spatial structure of the double-helix fiber of the present invention due to intertwining can effectively prevent the interface between the fiber and the matrix from being damaged, and improve the bonding ability between the fiber and the matrix.

Description

technical field [0001] The invention relates to a laminated board, in particular to a foamed laminated board with double-helix fiber reinforcement. Background technique [0002] Porous materials, including metal foam and polymer foam, have the advantages of high specific strength, high specific stiffness, high compressive strength and good energy absorption performance, and are widely used in construction, shipbuilding, wind energy and aerospace fields. Compared with solid materials, porous materials can greatly reduce the solid heat transfer area and increase the heat transfer distance due to the large number of pore cell structures inside, so they are especially suitable as heat insulation materials. Compared with solid structures, the cell structure of porous materials is prone to plastic deformation when impacted, which is conducive to energy absorption during impacts, so porous materials are often used in vibration-damping structures. However, the low tensile strength ...

AI Technical Summary

Problems solved by technology

However, foam materials, especially foam materials with high porosity, have a large number of cavities that make the bond between the matrix and fibers relatively weak, and the interface debonding phenomenon is prone to occur under the action of external loads, which makes the fiber reinforced foam composite material invalid and affects the board. Normal use

Images