Rail-bound vehicle aramid-fiber honeycomb side ceiling and preparation method therefor

Abstract

The invention discloses a rail-bound vehicle aramid-fiber honeycomb side ceiling and a preparation method therefor. The aramid-fiber honeycomb side ceiling comprises an aramid-fiber honeycomb core, an upper panel laminated to the upper surface of the aramid-fiber honeycomb core and a lower panel laminated to the lower surface of the aramid-fiber honeycomb core, wherein each of the upper and lower panels comprises a flame-retardant epoxy resin composite fiber fabric layer and a flame-retardant epoxy resin composite chopped fiber mat layer, the chopped fiber mat layer in the upper panel is laminated to the upper surface of the aramid-fiber honeycomb core, the chopped fiber mat layer in the lower panel is laminated to the lower surface of the aramid-fiber honeycomb core, a U-shaped connecting member which is used for being connected with a crossbeam of a rail-bound vehicle is mounted at the upper end of the rail-bound vehicle aramid-fiber honeycomb side ceiling, and lock-hole inserted parts are embedded at the lower part of the rail-bound vehicle aramid-fiber honeycomb side ceiling. The rail-bound vehicle aramid-fiber honeycomb side ceiling is light in weight and high in strength and can reach the flame-retardant standard; and the preparation method for the rail-bound vehicle aramid-fiber honeycomb side ceiling is low in production cost and is applicable to the small-scale development of rail-bound vehicle side ceilings.

Description

technical field [0001] The invention belongs to the technical field of vehicle interior materials, and in particular relates to an aramid honeycomb side top plate for a rail vehicle and a preparation method thereof. Background technique [0002] At present, the upper side roofs of rail vehicles (such as high-speed trains, bullet trains, subways, low-floor vehicles, etc.) are mostly made of stainless steel, aluminum alloy, glass fiber reinforced plastics, etc., and their shapes are mainly flat or simple curved surfaces. The shape is relatively rigid and lacks three-dimensionality; Moreover, the side roof plates of these materials are heavy, which increases the traction power of high-speed rail vehicles, which is not conducive to environmental protection and energy saving. [0003] With the development of urban rail transit, the demand for lightweight vehicle interior and exterior materials is getting higher and higher. The traditional rail vehicle side roof has the following ...

AI Technical Summary

Problems solved by technology

[0002] At present, the upper side roofs of rail vehicles (such as high-speed trains, bullet trains, subways, low-floor vehicles, etc.) are mostly made of stainless steel, aluminum alloy, glass fiber reinforced plastics, etc., and their shapes are mainly flat or simple curved surfaces. The shape is relatively rigid and lacks three-dimensionality; Moreover, the side roofs of these materials are heavy, which increases the traction power of high-speed rail vehicles, which is not conducive to environmental protection and energy saving.

[0003] With the development of urban rail transit, the demand for lightweight vehicle interior and exterior materials is getting higher and higher. The traditional rail vehicle side roof has the following disadvantages: (1) Most of the materials are stainless steel, glass fiber reinforced plastic and aluminum alloy, which are heavy and cannot be used. To meet the demand for lightweight materials; (2) When the product batch is small, the investment in opening metal molds is too high, and the cost cannot be recovered in a short time; (3) The shape is usually flat or simple curved surface, and the shape is single, which cannot be coordinated with the interior of the car collocation;

The existing processing technology of aramid honeycomb panels is usually molding, autoclave or vacuum bag forming in a heating furnace. The process investment is large and the production efficiency is low, so it is not suitable for small batch production

Moreover, there is no report on the use of aramid honeycomb panels for rail vehicle side roofs

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