Sound insulation material, composite carpet using the material and preparation method thereof

Abstract

The invention belongs to the technical field of sound insulation polymer composite materials and preparation thereof, and particularly relates to a high sound insulation composite carpet and a preparation method thereof. The composite carpet is provided with a carpet layer, a composite sound insulation layer is arranged below the carpet layer, and the sound insulation layer is prepared from a sound insulation material containing the following components: 100 parts of PVC resin, 10-60 parts of a plasticizer, 1-6 parts of a stabilizer, 30-90 parts of sound insulation function body particles, 0-100 parts of a filler and 1.3-9 parts of additives. The sound insulation function body particles comprise two or more of carbonate, sulfate, hydroxide, oxide and metal powder. The carpet provided by the invention has all the functions of a universal carpet, but also has an outstanding high sound insulation property, and the sound reduction index is as high as 40 dB. The carpet is environment-friendly, non-toxic and pollution-free, and a thermoplastic matrix can be recycled. The production process of the product is simple, and the application is extensive.

Description

technical field [0001] The invention belongs to the technical field of sound-insulating polymer composite materials and their preparation, and in particular relates to a high-sound-insulation composite carpet and a preparation method thereof. Background technique [0002] At present, with the rapid development of the modern economy, on the one hand, the accompanying noise pollution problem is becoming more and more obvious; requirements. Therefore, noise control and blocking has become an important problem to be solved urgently. Usually, noise control is nothing more than two methods: controlling vibration source and sound source, blocking vibration and noise transmission. In real life, since the vibration source and the sound source are an objective existence, the control of the vibration source and the sound source is often powerless, and blocking vibration and noise transmission becomes the only feasible option. [0003] At present, carpet has been more and more applie...

AI Technical Summary

Problems solved by technology

Generally, in the prior art, particles of the same particle size are used for filling, and it is difficult to achieve volume complementation and uniform distribution, resulting in uneven filling and poor mechanical properties, which affect the sufficient reflection, scattering, refraction and diffraction of sound waves in it, thus Affects the blocking and absorption of sound

When all large-size particles are used, it is difficult to achieve dense filling due to the steric hindrance effect, and the gaps between the particles are large, which cannot fully block the transmission of sound waves (such as reflection, scattering, refraction or diffraction)

When all small particle size particles are used, on the one hand, the small particles themselves have poor reflection and blocking ability to sound waves, and are easy to diffract; on the other hand, due to the high surface free energy of small particles, inhomogeneity easily occurs in the collective Aggregation or agglomeration, unable to block the transmission of sound waves to the greatest extent

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