Manufacture method of porous sound-absorption ceiling board made of glass fiber reinforcement gypsum

Abstract

The invention relates to a manufacture method of a porous sound-absorption ceiling board made of glass fiber reinforcement gypsum, which comprises the following steps of: preparing slurry and blending, casting in a mold, demolding, dewatering and drying, wherein a certain quantity of slurry is spouted and casted in the cavity of the mold for casting in the mold; the corresponding quantity of short shreds are sprayed; then hanging parts and glass fiber roving long fibers are arranged; the procedures are repeated; and finally, the quantity of the slurry and the quantity of the glass fiber shortshreds are sprayed according to requirements. The invention adopts a spraying method that the glass fiber short shreds, the glass fiber roving long fibers and high-intensity gypsum powder mixed slurry are casted into the cavity of the mold in a stratified mode to be fully distributed in each space position of products, and the contents of the glass fiber long shreds and the glass fiber short shreds in the products are ensured not to be deformed. the products obtained by the manufacture method have the advantages of less dry-wet shrinkage, high intensity, light weight and good sound effect; the blank space that the glass fiber reinforcement gypsum can not be made into the traditional porous sound-absorption board is filled up; and remarkable progress and positive effect are obtained.

Description

technical field [0001] The invention relates to a decorative board for building materials, in particular to a method for manufacturing a glass fiber reinforced gypsum porous sound-absorbing ceiling board. Background technique [0002] At present, with the rapid development of the economy and the improvement of people's living standards, people have put forward acoustic requirements for most buildings, not only for large buildings such as concert halls, grand theaters, auditoriums, etc. School language labs, classrooms, karaoke rooms, and even residential buildings, train carriages, etc. also have such requirements. In the prior art, in order to meet the acoustic requirements, a wooden or metal frame is usually filled with glass fiber cotton to make a porous material, and then covered with a metal plate or other plates with sound-absorbing holes to form a sound-absorbing layer. The process of this structure is complicated, the cost increases, and the sound-absorbing material...

AI Technical Summary

Problems solved by technology

The process of this structure is complicated, the cost increases, and the sound-absorbing material is easy to form dust and pollute the environment during the on-site construction process. Therefore, the most ideal method is to directly use glass fiber reinforced gypsum to make porous sound-absorbing ceiling panels.

However, for structures similar to porous and small holes, due to the variety of changes, short glass fiber mats cannot be laid. Although mesh cloth can be laid, its content cannot meet the requirements. For components of this fancy structure, glass fiber mats are used Fiber-reinforced plaster to make almost powerless, can only give up

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