Negative Poisson's ratio composite material pavement slab

Abstract

The invention discloses a negative Poisson's ratio composite material pavement slab which is formed by splicing a plurality of single-sided boards, and each single-sided board comprises an upper layer glass fiber reinforced composite material skin with a negative Poisson's ratio value, a middle layer aramid fiber reinforced composite material layer and a lower layer glass fiber reinforced composite material skin with a negative Poisson's ratio value, the two side surfaces of the middle aramid fiber reinforced composite material layer are respectively bonded with the upper glass fiber reinforced composite material skin and the lower glass fiber reinforced composite material skin through a binder to form a whole. According to the composite material pavement slab with the negative Poisson's ratio value, the aramid fiber reinforced composite material layers are bonded together through the upper glass fiber reinforced composite material skin and the lower glass fiber reinforced composite material skin, and the multi-axial glass fiber reinforced composite material skin and the aramid fiber reinforced composite material layers are formed through weaving; when the pavement slab is subjected to size change in the length direction, the negative Poisson's ratio effect is generated, the splicing error caused by thermal expansion and cold contraction is made up, and the use reliability of the pavement slab is improved.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and more particularly, the invention relates to a composite material track panel with negative Poisson's ratio. Background technique [0002] The need for rapid repair technology and rapid construction of field airports after the destruction of active conventional airports, rapid laying of composite road panels is urgent and widely used. There is an alternating process of cold and heat in the application of composite road panels, and there must be thermal expansion and cold contraction. When a large area is used in a high temperature environment, it is easy to cause local arching of the road panel. When a large area is used in a low temperature environment, the material shrinks and causes the road surface. There is a phenomenon of traction stress on the panel. When the aircraft is landing, the stress on the panel is released, which is easy to cause the joint collapse phenomenon, thus ...

AI Technical Summary

Problems solved by technology

In the application process of composite material road panels, there is an alternating process of cold and heat, and there must be thermal expansion and contraction. When used in a large area in a high temperature environment, it is easy to cause local arching of the road panel. When used in a large area in a low temperature environment, the material shrinks and causes the road There is a phenomenon of traction stress on the panel. When the aircraft lands, the stress on the panel will cause stress release, which will easily cause the joints to collapse, thus affecting the normal take-off and landing of the aircraft.

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