Preparation method of automobile noise reduction interior composite material

Abstract

The invention relates to a preparation method of an automobile noise reduction interior composite material, and belongs to the technical field of sound absorption materials. Sisal fibers are used as raw materials to prepare the automobile noise reduction interior composite material. The sisal fibers belong to leaf fibers and are natural plant fibers, the sisal hemp is simple to plant and short inmature period, no chemical fertilizer needs to be applied in the planting process, the cost of the interior material can be effectively reduced, the sisal fibers are excellent in moisture absorption and air permeability, free of static electricity, good in rigidity, excellent in ultraviolet resistance and good in noise elimination performance and antibacterial health care performance, the interiors of the sisal fibers are polygonal and are provided with oval middle cavities of different sizes, and the middle cavity structure can effectively improve the sound absorption effect of the automotiveinterior material. The automobile noise reduction interior composite material is prepared by taking silicone rubber as a raw material, and since particles of the silicone rubber have elasticity, whensound waves contact with the silicone rubber, the sound waves in the composite material are absorbed when contacting with the rubber particles, so that the noise of friction braking is reduced.

Description

technical field

[0001] The invention relates to a preparation method of a noise-reducing interior trim composite material for an automobile, and belongs to the technical field of sound-absorbing materials. Background technique

[0002] As a new type of composite material, non-woven composite material has been paid more and more attention by automobile manufacturers due to its short process flow, high labor productivity, wide use of raw materials and broad product application fields, and its development momentum is extremely rapid. As a new type of composite material, non-woven needle-punched felt has been used in automotive interior materials through compression molding, and the amount is still increasing. At the same time, with the development of the economy and the improvement of people's living standards, the demand for automobiles continues to grow. Therefore, nonwoven materials for automobiles, especially automotive interior materials, have a huge market space. [000...

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