Preparation method of plasterboard and plasterboard

Abstract

The application provides a preparation method of a plasterboard and the plasterboard. The preparation method comprises the steps: placing gypsum board slurry containing a coagulant on a conveying roller way, and sequentially carrying out a final setting stage, a cutting stage and a drying stage under the drive of the conveying roller way so as to finally set the gypsum board slurry before enteringthe cutting stage. The plasterboard comprises desulfurized gypsum clinker, water, a coagulant, a foaming agent, starch and a functional additive in parts by weight. By using the preparation method ofthe plasterboard, the final setting time of the gypsum slurry is greatly shortened, not only is the slurry disintegrating slag during board cutting reduced, but also the strength of a wet board whenthe wet board enters a drying machine is improved, and influences of disintegrating slag to the surface evenness of the board are reduced.

Description

technical field [0001] The application belongs to the technical field of building materials, in particular to a method for preparing a gypsum board with paper surface and the gypsum board with paper surface. Background technique [0002] In the production of gypsum board, many reddish-brown particles are attached to the roller table for transporting the gypsum board, which will cause a large number of small pits on the surface of the gypsum board, with a diameter of about 1-2mm and a depth of about 0.5mm, which are densely packed. Commonly known as "hemp pit", the appearance of "hemp pit" means that although the gypsum board has a certain strength when it enters the dryer section, the strength is not high, so the hard roller adhesion will form deep and shallow layers on the surface of the gypsum board. Different dents. At present, when the surface of the gypsum board is uneven, the factory often stops production and manually cleans the roller table. This treatment method is ...

AI Technical Summary

Problems solved by technology

[0002] In the production of gypsum board, many reddish-brown particles are attached to the roller table for transporting the gypsum board, which will cause a large number of small pits on the surface of the gypsum board, with a diameter of about 1-2mm and a depth of about 0.5mm, which are densely packed. Commonly known as "hemp pit", the appearance of "hemp pit" means that although the paper-faced gypsum board has a certain strength when entering the dryer section, the strength is not high, so hard roller adhesions will form deep and shallow deposits on the surface of the gypsum board. Different dents. At present, when the surface of the gypsum board is uneven, the factory often stops production and manually cleans the roller table. This treatment method is not thorough and repetitive, and the problem is not dealt with in time, and the cleaning takes a long time. Difficult to clean and cause serious damage to the roller table

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