Sound-absorbing and conductive composite board and preparation method thereof

Abstract

The invention discloses a sound-absorbing and conductive composite board and a preparation method thereof, and relates to the technical field of new materials. The preparation method comprises the following steps: filling gaps in basalt particles with polyurethane, impregnating the filled basalt particles under vacuum pressure, and adding the basalt particles into a foaming matrix to obtain a foaming material; crushing the foaming material, dispersing the crushed foaming material in styrene to obtain a dispersion liquid, preparing three-dimensional graphene by using a chemical vapor deposition method, preparing large-size graphene aerogel by using the three-dimensional graphene as a base material and adopting a freeze-drying method, carrying out heat treatment on the large-size graphene aerogel, filling the dispersion liquid into the large-size graphene aerogel by adopting a vacuum-assisted filling method to prepare a sound-absorbing and conductive core material; placing the sound-absorbing and conductive core material between the two layers of polyvinyl chloride foam boards, bonding the two layers of polyvinyl chloride foam boards through an adhesive, and preparing the sound-absorbing and conductive composite board after heavy pressing and shaping. The sound-absorbing and conductive composite board prepared by the preparation method disclosed by the invention is light in weight and relatively good in mechanical property while absorbing sound and conducting electricity.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a sound-absorbing and conducting composite board and a preparation method thereof. Background technique [0002] As people have higher and higher requirements for the comfort and functionality of modern buildings, the development and research of various building structures and building materials has become a hot spot in the industry. In order to meet the sound-absorbing requirements of modern buildings, a large number of sound-absorbing materials have appeared and are used in the construction field. However, most of the sound-absorbing materials are heavy and the sound-absorbing effect is not very good. Therefore, it is necessary to prepare a sound-absorbing material. Composite panels are necessary. [0003] The composite board prepared by the invention not only has good sound absorption effect and is light in weight, but also has electrical conductivity, which meets the d...

AI Technical Summary

Problems solved by technology

In order to meet the sound-absorbing requirements of modern buildings, a large number of sound-absorbing materials have appeared and are used in the construction field. However, most of the sound-absorbing materials are heavy and the sound-absorbing effect is not very good. Therefore, it is necessary to prepare a sound-absorbing material. Composite panels are necessary