Aluminum-base hollow microbead-EVA composite emulsion-coating polypropylene-base nonwoven damping material for automobile interior decoration

Abstract

The invention relates to a nonwoven damping material, especially relates to an aluminum-base hollow microbead-EVA composite emulsion-coating polypropylene-base nonwoven damping material for automobile interior decoration. The aluminum-base hollow microbead-EVA composite emulsion-coating polypropylene-base nonwoven damping material for automobile interior decoration of the invention comprises the following raw materials in parts by weight: 10-12 parts of 400-600 mesh aluminium silicate powder, 22-28 parts of polypropylene, 10-14 parts of chlorinated polyethylene, 2-3 parts of colophony, 1-2 parts of cellulose ether, 4-6 parts of styrene-maleic anhydride copolymer, 2-4 parts of poly methyl methacrylate, 0.1-0.2 part of anti-oxygen 1076, 0.1-0.2 part of anti-oxygen DLTP, 2-3 parts of silane coupling agent, 4-6 parts of basalt fibre, 0.5-0.6 part of 325-400 mesh aluminium-base hollow microbead, 10-12 parts of EVA emulsion with a solid content of 10-12% and 1-2 parts of adjuvant. The material prepared according to the invention not only embraces advantages of traditional polypropylene nonwoven materials such as improved mechanical properties, good thermal stability, impact resistance and aging resistance, but also increases cellosilk net strength, accelerates frictional attenuation of sound wave and further improves noise reducing capability. The damping material prepared according to the invention is a new applied automobile damping material that is light in weight, environment-friendly, flexible, tight, wear-resistant and corrosion-resistant.

Description

technical field [0001] The invention relates to a non-woven sound-absorbing material, in particular to a polypropylene-based non-woven sound-absorbing material coated with aluminum-based hollow microspheres-EVA composite emulsion for automobile interior decoration. Background technique [0002] Various dynamic noises will be generated in the car during the starting and running of the car. These noises are directly related to the comfort and hearing health of the passengers. Excessive noise may even interfere with the driver's attention and affect safe driving. To reduce the noise inside the car, it is particularly important to create a quiet and healthy driving and riding environment. To reduce the noise in the car mainly depends on the design and material of the car body itself and the sound-absorbing materials of the interior. Among them, designing high-quality sound insulation and noise reduction materials is the most common and efficient noise reduction method. [0003]...

AI Technical Summary

Problems solved by technology

[0003] Polypropylene-based composite non-woven materials made by meltblown method have become a kind of sound-absorbing materials widely used in automotive interiors due to their ultra-fine fiber structure, simple and efficient production, non-toxic and harmless, etc. Most of these materials have loose structures , the smooth fiber outer layer reduces the specific surface area of ​​the material, which shortens the attenuation and conversion time of the sound wave in the material, and cannot achieve a satisfactory sound absorption effect. In actual use, the noise reduction effect is often improved by increasing the thickness of the material At the same time, the finished product has disadvantages such as easy deformation, poor resilience, easy to generate static electricity, and poor heat resistance.