Lightweight composite material train interior trim part with high-strength coatings

Abstract

The invention discloses a lightweight composite material train interior trim part with high-strength coatings. The train interior trim part comprises top plates, side top plates and wall plates; eachof the top plates, the side top plates and the wall plates comprises a composite sheet layer and the high-strength coating; and each composite sheet layer comprises a honeycomb material layer body, afiber material layer body and a polyurethane material layer body, wherein the fiber material layer body and the polyurethane material layer body are sequentially wrapped outside the honeycomb materiallayer body from inside to outside. Compared with the prior art, the train interior trim part has the advantages that the train interior trim part is prepared by utilizing the lightweight composite plates with the high-strength coatings, and a plurality of sheets are reasonably combined, so that the train interior trim part which is high in strength, light in weight, safe, environmentally friendly, low in cost and high in output is formed.

Description

technical field [0001] The technical solution of the application belongs to the technical field of rail train accessories, and in particular relates to a lightweight composite material train interior part with a high-strength coating. Background technique [0002] Rail transit refers to public transportation facilities with fixed lines, fixed tracks, and transportation vehicles and service facilities. Commonly used are high-speed rail trains, subway trains, light rail trains, cloud rail trains, and traditional trains. Taking the most representative high-speed train as an example in my country, its technology and scale have reached the world-class level in recent years, and the speed-up target of high-speed trains has been updated year by year, so the implementation of lightweight train components is also in full swing. Because light weight can not only reduce the impact load when the vehicle is running at high speed and improve ride comfort, but also play a significant role ...

AI Technical Summary

Problems solved by technology

[0003] Although FRP has many advantages, in a large number of applications, it is found that FRP has the following disadvantages on the side roofs, side walls, and floors of large-scale and simple surfaces: (1) The content of volatile organic compounds is high. In the production process, substances containing aldehyde and benzene will be added, and the products produced will continue to volatilize harmful gases. Therefore, among the main materials currently used in train interiors, FRP materials are the focus of volatile organic compound (VOC) control. The object of attention; (2) There is still a large space for weight reduction. The density ratio of FRP and steel plate is 1:4.3. Due to the constraints of process conditions, the thickness ratio of the product corresponding to the two materials is about 4.3:1. , the weight ratio of the obtained products is just close to 1:1, that is to say, in order to reduce the weight of train parts, FRP composite materials are used instead of steel. In the end, a lightweight solution that really benefits is not obtained, and its weight reduction space is still large. ; (3) Excessive performance, taking the side roof and side wall of large-area parts as an example, due to the limitations of the FRP production process, its thickness generally cannot be less than 3mm, while interior parts such as roof, side roof and wall panels are relatively thicker. In terms of low strength requirements, this thickness is not needed, so the extra thickness is the extra weight

Images