Hollow carbon ball-styrene-acrylic composite emulsion coated polypropylene-based non-woven sound absorption material for automotive interior trimming

Abstract

The invention relates to a non-woven sound absorption material, in particular to a hollow carbon ball-styrene-acrylic composite emulsion coated polypropylene-based non-woven sound absorption material for automotive interior trimming. The hollow carbon ball-styrene-acrylic composite emulsion coated polypropylene-based non-woven sound absorption material is prepared by, by weight, raw materials including 2-3 parts of polyvinyl acetal, 12-15 parts of ethylene-butylene copolymer, 22-26 parts of polypropylene, 3-4 parts of oxidized starch, 2-3 parts of ethylene glycol dimetacrylic acid ester, 1-2 parts of sodium alginate, 2-3 parts of silane coupling agent kh550, 3-5 parts of carbon nano-particles, 1-2 parts of antioxidant 1010, 12-15 parts of aluminium oxide of 400-600 meshes, 0.1-0.2 part of nano hollow carbon balls, 1-2 parts of nanometer silicon, 12-14 parts of styrene-acrylic emulsion with 8%-10% solid content and 1-2 parts of additive. The hollow carbon ball-styrene-acrylic composite emulsion coated polypropylene-based non-woven sound absorption material does not pollute the inside environment of an automobile, is flame-retardant and abrasion-resistant, meanwhile is easy to absorb and degrade and is a novel practical automotive sound absorption material.

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 a hollow carbon sphere-styrene-acrylic 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.