Preparation method for fireproof air-permeable sound-insulation felt material

Abstract

The invention discloses a preparation method for a fireproof air-permeable sound-insulation felt material, and belongs to the technical field of preparation of building sound-insulation materials. According to the method disclosed by the invention, firstly, phenol, a formaldehyde solution and a sodium hydroxide solution are mixed, a reaction under stirring is performed under the high-temperature condition to obtain phenolic resin, and because the phenolic resin has high-temperature resistance, the phenolic resin is added into raw materials to prepare the sound-insulation felt material; then modification is performed on the phenolic resin by utilizing melamine and urea, so that transfer of thermal energy to a resin substrate is blocked; a system of melamine and urea modified phenolic resinis researched and developed, so that a large number of rigid groups are formed in the system; seaweed fibers are put into hydrochloric acid for an acidification reaction, so that the structure of theseaweed fibers is looser, and circulation of a gas in gaps of the seaweed fibers is facilitated; in addition, a multi-layer net-shaped and porous structure is formed in the system, a porous medium isutilized, so that a sound insulation effect is achieved, and sound-insulation performance of the sound-insulation felt material is improved; and the method has broad application prospects.

Description

technical field [0001] The invention discloses a preparation method of a fire-proof air-permeable sound-insulation felt material, which belongs to the technical field of building sound-insulation material preparation. Background technique [0002] Sound insulation felt is a high-density coil with certain flexibility. It is widely used in building sound insulation materials in developed countries such as Europe, America, Japan, and South Korea. It is mainly used to match with gypsum boards for sound insulation of walls and ceilings. Sound insulation and damping of mechanical equipment. [0003] When hearing the word "sound insulation felt", most people's first impression should be something like felt. In fact, sound insulation felt is completely different from felt in appearance. Felt is light and soft, while sound insulation felt is thin but heavy. Some people say that the name "sound insulation felt" comes from Japan, but the Japanese building materials industry calls thi...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for preparing a fire-proof and air-permeable sound-insulating felt material in view of the disadvantages of poor sound-insulating effect and poor air permeability in common sound-insulating felt materials at the same time.