Polypropylene-based non-woven sound absorption material coated with nanometer molybdenum disulfide and styrene-acrylate composite emulsion for automotive interior decoration

Abstract

The invention relates to a non-woven sound absorption material, and particular relates to a polypropylene-based non-woven sound absorption material coated with nanometer molybdenum disulfide and styrene-acrylate composite emulsion for automotive interior decoration. The polypropylene-based non-woven sound absorption material is prepared from the following raw materials in parts by weight: 8-10 parts of polyvinyl chloride, 24-28 parts of polypropylene, 3-5 parts of oxidized starch, 1-2 parts of polydimethylsiloxane, 2-3 parts of ethylene glycol dimethacrylate, 4-6 parts of 400-600-mesh zinc oxide, 2-3 parts of a silane coupling agent kh550, 2-4 parts of 400-600-mesh aluminum hydroxide, 12-14 parts of a sepiolite fabric, 1-2 parts of antioxidant 1010, 0.1-0.2 part of nanometer molybdenum disulfide, 1-2 parts of nano-silicon, 12-14 parts of styrene-acrylate emulsion of which the solid content is 8-10 percent and 1-2 parts of an auxiliary. The polypropylene-based non-woven material is high in flame retardance and waterproof property, free of pollution of inside-car environment, good in cold and heat stability, and easy for recycling degradation; therefore, the material is the 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 nano-molybdenum disulfide-styrene-acrylic composite emulsion for automobile interior decoration. Background technique [0002] During the starting and driving of the car, various dynamic noises will be generated in 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. Therefore, it can effectively reduce the The noise in the cabin 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, material and interior sound-absorbing materials of the car body itself. Among them, the design of high-quality sound insulation and noise reduction materials is the most common and efficient noise reduct...

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.