The use of new glass fiber reinforced plastic materials can effectively reduce the quality of rail transit vehicles, help reduce operating costs and maintenance costs, and can well meet the mechanical strength and stress requirements, good flame retardant, sound insulation and heat insulation properties. At present, the proportion of domestic rail transit vehicles using FRP is not very high. Now it is mainly used in rail transit vehicle interior parts, and is used in car bodies and bogies in a small range. There is a large potential market for development.
The use of new glass fiber reinforced plastic materials can effectively reduce the quality of rail transit vehicles, help reduce operating costs and maintenance costs, and can well meet the mechanical strength and stress requirements, good flame retardant, sound insulation and heat insulation properties. At present, the proportion of domestic rail transit vehicles using FRP is not very high. Now it is mainly used in rail transit vehicle interior parts, and is used in car bodies and bogies in a small range. There is a large potential market for development. The following mainly introduces the application of FRP materials in the interior decoration of rail transit vehicles.
The interior decoration of rail transit vehicles is where a large number of FRP materials are used. However, the interior decoration uses a glass fiber reinforced plastic structure that is not entirely composed of glass fiber and resin, but uses a sandwich structure. This is done to achieve a certain strength and rigidity design requirement. The composite sandwich structure consists of five parts from top to bottom, namely the structure of FRP, glue layer, foam (aluminum honeycomb), glue layer and FRP. In addition, on the surface of the FRP panel relative to the FRP panel on the other side of the foam, there will be an extra layer of gel coat with a thickness of about 1 mm. This is to make the surface more smooth and beautiful, and is more conducive to painting operations.
※ FRP materials are used in the cab hood
FRP materials have good plasticity and can be designed into different shapes according to vehicle models and user requirements. During the production process, they are not limited by the width. Wooden beams or steel beams can be embedded as needed to increase the strength of FRP products. After the molded glass fiber reinforced plastic product is formed, the surface is sprayed with imported gel coat and then sprayed with polyester paint to improve the surface decoration effect. In addition, the made FRP cab hood can keep the structure unchanged even at 420℃ high temperature. Once the vehicle breaks out in the tunnel, it can provide favorable conditions for passengers to escape; and the design thickness of the FRP cab hood can be less than 3.2mm , Can effectively reduce the weight of the vehicle.
※ FRP material application passenger seat
The seat made of glass fiber reinforced plastic material has the characteristics of high strength, light weight, aging resistance, long life, and maintenance-free. There is no harmful gas released at room temperature, and there is little smoke when burning at high temperature, and no toxic gas is produced, which is conducive to escape.
※ FRP materials are used in the cab console
The operating platform of the driver's cab is mainly composed of the platform frame and the under platform frame. In order to facilitate the operation of the driver, it must have good flow linearity. The space of the operating platform is relatively small, and it needs to have good electrical insulation characteristics. FRP products It just has the characteristics of easy processing, convenient repair, and superior insulation performance, so it is very suitable for use in the operator's cab.
※ FRP materials are used in the side wall panels of the passenger compartment
The thickness of the FRP side wall panel is generally 4mm. The back circumference of the FRP side wall and the pre-embedded rubber strip or aluminum beam around the window form an integral module, which has good airtightness and is easy to achieve modular installation, which is beneficial to leveling the wall of the vehicle and making the passenger compartment Overall beautiful and generous. FRP side wall panels have high strength, good abrasion resistance, and are not easy to produce scratches. In case of such problems, they can be easily repaired by spraying, painting and other technological means.
※ FRP materials are used in air-conditioning ducts
The air-conditioning duct is a thin-walled cylindrical structure, which requires a small thermal conductivity, low heat consumption, and good insulation performance. As the FRP material has good tensile strength and bending strength, and low thermal conductivity, it is an ideal material for manufacturing air-conditioning ducts of subway vehicles. The actual situation shows that the FRP air-conditioning duct can better prevent the heat exchange inside and outside the duct and effectively prevent condensation in the duct.
Pengda Haizhuo Intelligent Equipment Co., Ltd. specializes in the production of SMC, BMC, GMT, LFT-D, FRP parts products and other thermosetting and thermoplastic molding presses. Major manufacturers are welcome to inquire, you can call +86 0510 83394311 or Send an email to cindy@wuxipd.com.
