Noiseproof composite board and preparation method

Abstract

The invention discloses a noiseproof composite board. The composite board comprises an outer separation and protection layer, a packing material and a core material, wherein the separation and protection layer comprises an outer layer protection board and inner layer fiber cloth; the protection board is a rockwool board, wherein a plurality of ostioles are formed in the inner surface of the rockwool board, and the thickness of the rockwool board is 5-8 mm; the fiber cloth is multi-axial cloth which is formed by weaving glass fibers, and the thickness of the fiber cloth is 0.1-0.3mm; the packing material is a breathable film of which the thickness is 0.05-0.5 mm; the core material is a mixture of expanded perlite, plant fibers, lead, barium, cadmium, tin and gas phase silicon dioxide. The noiseproof composite board disclosed by the invention has the properties of good soundproof effect, good heat prevention effect, simple production technology, fire prevention, water prevention, corrosion resistance, moisture resistance, acid and alkali resistance, no toxin or damage, zero pollution, and the like, the situations of insect damaging and fungus growing are avoided, the hardness is higher than that of plastics, the service life is long, and the strength is high.

Description

technical field [0001] The invention relates to an anti-noise composite board and a preparation method, and belongs to the field of building materials. Background technique [0002] Noise pollution not only damages human hearing, but also can cause heart and brain system diseases. In industrialized areas and cities with heavy traffic, it has become one of the public hazards to human beings. From the simplest way of plugging the ears with fingers, people have used various methods to hinder the transmission of sound: stuffing cotton balls and other fiber products in the external auditory canal, although it is very It's convenient but the noise reduction effect is not good. People also use various soft plastic products as sound blocking materials, which can be roughly divided into two categories: non-foamed materials and foamed materials. The former includes molded rubber products and plastic blocks. Due to human differences, it is difficult to mold rubber products. Meet ever...

AI Technical Summary

Problems solved by technology

In industrially developed areas and cities with heavy traffic, it has become one of the public hazards of human beings. Starting from the simplest way of blocking ears with fingers, people have used various methods to hinder the conduction of sound: filling cotton balls and other fiber products in the external auditory canal. Convenience but poor noise reduction

People also use various soft plastic products as sound blocking materials, which can be roughly divided into two categories: non-foamed materials and foamed materials. The former includes molded rubber products and plastic rubber blocks. Due to differences in human body, it is difficult to mold rubber products Something for everyone

It is cumbersome to make molds that vary from person to person, and it brings difficulties to mass production. The plastic block is not easy to fill the ear canal, and it is difficult to take out

None of the above designs take into account the structure of the human ear canal and the specific resonance frequency, and attenuation occurs in the entire sound frequency band. Although it can reduce noise, it also makes it impossible for people to communicate normally, which brings troubles to some work and life.

Some people also design more complex devices, such as electronic filters, which can prevent noise on the one hand and transmit voice signals on the other. This kind of device is expensive and troublesome to use

There are also people who redesign the glass and add double glazing, which is not conducive to heat dissipation and also affects the circulation of air.