High temperature-resistant polyester non-woven fabric used for lightweighting of automobile and preparation method thereof

Abstract

The invention discloses a high temperature-resistant polyester non-woven fabric used for lightweighting of an automobile. The high temperature-resistant polyester non-woven fabric comprises a polyester fiber lamella layer and an aluminum foil layer, wherein the density of the polyester fiber lamella layer successively decreases along the thickness direction of the lamella layer, the polyester fiber lamella layer successively comprises a compact layer, a semi-compact layer and a fluffy layer, and the aluminum foil layer is arranged on the surface of the compact layer. The preparation method comprises the following steps: preparing polyester fiber lamella of the polyester fiber lamella layer; sprinkling hot melt powder among the compact layer, the semi-compact layer and the fluffy layer and firmly bonding the three layers by using roll compacting technology; sprinkling the hot melt powder on the surface of the compact layer; and heating aluminum foil of the aluminum foil layer and then covering the surface of the compact layer with the aluminum foil layer. Thus, the prepared high temperature-resistant polyester non-woven fabric has light weight, good elasticity, flame retardation performance and good high temperature-resistant, heat-insulating, sound-absorbing and sound-insulating effects, is environment-friendly and odorless, can be extensively used for interior decorative parts of the automobile and exerts heat-insulating, sound-insulating, vibration-damping and noise-reducing effects; moreover, the polyester non-woven fabric is reduced in thickness and gram weight and can meet new requirements of lightweighting of the automobile, so the comfort index of the automobile can be improved.

Description

technical field [0001] The invention relates to the field of non-woven fabrics, in particular to a high-temperature-resistant polyester non-woven fabric for lightweight automobiles and a preparation method thereof. Background technique [0002] Automobile noise is divided into exterior noise and interior noise. The noise outside the vehicle refers to the noise radiated from various parts of the vehicle to the space outside the vehicle, mainly including engine noise, exhaust noise, tire noise, brake noise and drive train noise. The noise in the car refers to the part of the noise of the various parts of the car outside the car that is introduced into the car through various channels, and the noise that the vibration transmission path of the car parts stimulates the structural vibration of the various parts of the car body to radiate into the car. Under the constraints of the acoustic characteristics of the interior space, a relatively complex reverberation sound field is gen...

AI Technical Summary

Problems solved by technology

At present, a large number of asphalt damping pads are used in automobiles, and the sound insulation effect is poor, causing peculiar smell in the automobile, and some models have an unpleasant smell

Dizziness and discomfort after a long period of time will affect driving safety

At present, the sound absorption coefficient of the sound-absorbing cotton (only fluffy cotton) on the market is very small, and the noise reduction effect after application in the car is average, which can no longer meet the higher requirements of car lightweight and car comfort.

Images