Preparation method of carbon fiber cotton capable of absorbing sound, preventing cold and preserving heat

Abstract

The invention discloses a preparation method of carbon fiber cotton capable of absorbing sound, preventing cold and preserving heat. The preparation method includes the following steps of 1, preparingcarbon fibers; 2, conducting thermal treatment on the carbon fibers and polyester fibers with a low melting point after carding, and integrating the fibers above into a whole part by means of a non-weaving mode to prepare a carbon fiber composite material layer; 3, after the carbon fiber composite material layer is cooled, compounding an antiradiation membrane layer to obtain the carbon fiber cotton capable of absorbing sound, preventing cold and preserving heat. According to the preparation method of the carbon fiber cotton capable of absorbing sound, preventing cold and preserving heat, thecarbon fiber cotton capable of absorbing sound, preventing cold and preserving heat is produced by means of the non-weaving mode. The prepared carbon fiber cotton capable of absorbing sound, preventing cold and preserving heat is low in density and heat conductivity coefficient, great in thermal insulation and heat preservation performance, excellent in sound insulation and absorption performance, inflammable and infusible in open fire and free of drops, smoke and toxic gas and meanwhile has the advantages of being waterproof and the like.

Description

technical field [0001] The invention relates to the technical field of carbon fiber materials, in particular to a preparation method of carbon fiber sound-absorbing, cold-proof and heat-preserving cotton. Background technique [0002] In modern vehicles trains, airplanes and automobiles, to enhance passenger comfort, minimize noise from the engine compartment, from tires rolling along the road or on the ground, and wind noise as the car cuts through the air at high speed , From the noise generated by the friction between the wheels of the car or train and the ground of the roadbed during operation, cotton felt or sponge for sound insulation in the car is usually laid inside the compartments of trains, airplanes and cars. In addition, the light radiation outside the compartments of trains, airplanes and automobiles will cause the temperature in the compartments to rise. At this time, it is necessary to use the air conditioning system to keep the temperature in the compartment...

AI Technical Summary

Problems solved by technology

In addition, the light radiation outside the compartments of trains, airplanes and automobiles will cause the temperature in the compartments to rise. At this time, it is necessary to use the air conditioning system to keep the temperature in the compartments at a more comfortable temperature, which requires that the air conditioners must be kept at a constant temperature. In the open state, this will inevitably increase energy loss and affect operating costs, so heat insulation materials are installed on the existing carriage body

[0003] However, the thermal insulation, heat insulation and sound insulation effects of traditional sound insulation materials are not ideal, and the use on the carriage cannot meet the requirements of ensuring passenger comfort and operating costs

The existing sound and heat insulation materials themselves have a high density (about 150kg / m 3 ), the use of large-scale laying will inevitably increase the weight of the carriage, which will affect the driving speed and energy consumption, and increase the operating cost

Although the existing sound insulation and heat insulation materials are flame retardant and can prevent the spread of fire, high temperature will cause thermal melting of such materials, and the high temperature droplets produced by the thermal melting will burn the skin and clothing, causing secondary damage to personnel

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