Fire-resistant, cold-resistant and sound-absorbing lightweight material for high-speed trains and preparation method

Abstract

The invention discloses a fireproof cold-resistant noise reduction light material for a high speed train. The fireproof cold-resistant noise reduction light material comprises aluminum foil, a composite fiber layer and a polyester film, wherein the aluminum foil and the polyester film are respectively arranged on two sides of the composite fiber layer in an adhesion manner; the composite fiber layer consists of the following raw materials in parts by weight: 10-20 parts of polyester fiber and 80-90 parts of polyacrylonitrile preoxidized fiber; the composite fiber layer consists of a plurality layers of composite fiber nets which are folded alternatively; single net surfaces of folded composite fiber nets of each layer have same angles; an angle of 135 degrees is formed between single net surfaces of adjacent layers of the composite fiber nets. The fireproof cold-resistant noise reduction light material is good in fireproof effect, the composite fiber layer is produced in a three-dimensional inclined net paving manner, the speed of one-direction heat conduction is increased, heat convection conduction can be effectively prevented, a good cold resistance effect and a noise reduction effect can be achieved, the sonic propagation way and the sonic propagation time can be effectively prolonged, and the acoustic energy can be greatly attenuated in the process.

Description

technical field [0001] The invention belongs to the field of fire-proof, cold-resistant and sound-absorbing materials, in particular to a fire-proof, cold-resistant and sound-absorbing lightweight material for high-speed trains and a preparation method thereof. Background technique [0002] In the face of strict material requirements for my country's subways, bullet trains, and high-speed rails, it is necessary to achieve the characteristics of fire prevention, cold resistance, noise reduction, and light weight. However, none of the existing materials can meet the above requirements. Contents of the invention [0003] In order to solve the above problems, the object of the present invention is to provide a fire-resistant, cold-resistant and sound-absorbing lightweight material for high-speed trains. [0004] In order to achieve the above object, the present invention is achieved through the following technical solutions: [0005] Fire-proof, cold-resistant and sound-abso...

AI Technical Summary

Problems solved by technology

However, none of the existing materials can meet the above requirements

Images