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Fire-resistant paper surface gypsum board and preparation method thereof

A kind of gypsum board, fire-resistant technology, applied in the direction of floors, building components, buildings, etc., can solve the problem that glass fibers are difficult to disperse evenly

Active Publication Date: 2020-01-07
BEIJING NEW BUILDING MATERIALS PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The strength and fire stability of gypsum board are the two key points that customers pay attention to the quality of gypsum board. In order to further improve the strength and fire stability of gypsum board, many gypsum board manufacturers have adopted the method of adding glass fiber to gypsum board , however unsatisfactory is that the glass fibers are difficult to disperse evenly into the gypsum board core

Method used

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  • Fire-resistant paper surface gypsum board and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) Weighing 100 parts by weight of gypsum clinker, 0.1 parts by weight of glass fibers with an average monofilament diameter of 10 μm and a length of 12 mm, 0.8 parts by weight of starch and 0.06 parts by weight of foaming agent;

[0024] 2) Add the glass fibers into the water, first stir for 10 minutes with a stirring device with a stirring paddle (the speed of the stirring paddle is 1500r / min), and then disperse it with an ultrasonic device (ultrasonic frequency is 55KHz, ultrasonic power is 0.7kw) for 15 minutes to make the glass Fibers are evenly dispersed in water.

[0025] 3) Add the aqueous solution uniformly dispersed with glass fibers, gypsum clinker, starch, and foaming agent into the mixer and stir fully to prepare a uniform slurry.

[0026] 4) The slurry is continuously poured between two layers of fire-resistant cardboard, and then extruded to obtain a fire-resistant paper-faced gypsum board wet board;

[0027] 5) The wet fire-resistant gypsum board is sol...

Embodiment 2

[0029] 1) Weigh 100 parts by weight of gypsum clinker, 0.3 parts by weight of glass fibers with an average monofilament diameter of 15 μm and a length of 12 mm, 0.8 parts by weight of starch and 0.06 parts by weight of foaming agent;

[0030] 2) Add the glass fibers into the water, first stir for 10 minutes with a stirring device with a stirring paddle (the rotation speed of the stirring paddle is 1000r / min), and then disperse it with an ultrasonic device (ultrasonic frequency is 40KHz, ultrasonic power is 0.6kw) for 10 minutes to make the glass Fibers are evenly dispersed in water.

[0031] 3) Add the aqueous solution uniformly dispersed with glass fibers, gypsum clinker, starch, and foaming agent into the mixer and stir fully to prepare a uniform slurry.

[0032] 4) The slurry is continuously poured between two layers of fire-resistant cardboard, and then extruded to obtain a fire-resistant paper-faced gypsum board wet board;

[0033] 5) The wet fire-resistant gypsum board ...

Embodiment 3

[0035] 1) Weigh 100 parts by weight of gypsum clinker, 0.5 parts by weight of glass fibers with an average monofilament diameter of 20 μm and a length of 12 mm, 0.8 parts by weight of starch and 0.06 parts by weight of foaming agent;

[0036] 2) Add the glass fibers into the water, first stir with a stirring device with a stirring paddle (the speed of the stirring paddle is 500r / min) for 5 minutes, and then disperse it with an ultrasonic device (the ultrasonic frequency is 25KHz, and the ultrasonic power is 0.5kw) for 5 minutes to make the glass Fibers are evenly dispersed in water.

[0037] 3) Add the aqueous solution uniformly dispersed with glass fibers, gypsum clinker, starch, and foaming agent into the mixer and stir fully to prepare a uniform slurry.

[0038] 4) The slurry is continuously poured between two layers of fire-resistant cardboard, and then extruded to obtain a fire-resistant paper-faced gypsum board wet board;

[0039] 5) The wet fire-resistant gypsum board ...

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Abstract

The invention discloses a method for preparing a fire-resistant paper surface gypsum board and the prepared fire-resistant paper surface gypsum board. The method comprises the following steps: addingglass fiber into water, firstly mechanically stirring, and then ultrasonically dispersing; adding an aqueous solution in which the glass fibers are dispersed, and other raw materials for preparing thefire-resistant paper surface gypsum board into a stirrer, and stirring to obtain a slurry; pouring the slurry between two layers of refractory paperboards, and carrying out extrusion molding to obtain a wet fire-resistant paper surface gypsum board; and solidifying, cutting off, drying and sawing the wet fire-resistant paper surface gypsum board to obtain a finished fire-resistant paper surface gypsum board product. According to the method disclosed by the invention, the glass fibers can be uniformly dispersed into the gypsum board core, so that the fire-resistant paper surface gypsum board with better fire resistance and higher strength is prepared.

Description

technical field [0001] The present application relates to but not limited to the field of building materials, in particular to but not limited to a fire-resistant paper-faced gypsum board and a preparation method thereof. Background technique [0002] The strength and fire stability of gypsum board are the two key points that customers pay attention to the quality of gypsum board. In order to further improve the strength and fire stability of gypsum board, many gypsum board manufacturers have adopted the method of adding glass fiber to gypsum board , however, it is not satisfactory that the glass fibers are difficult to disperse evenly into the gypsum board core. Contents of the invention [0003] The following is an overview of the topics described in detail in this article. This summary is not intended to limit the scope of the claims. [0004] The application provides a method for preparing a fire-resistant gypsum board, which can uniformly disperse glass fibers into ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14E04B9/04E04F13/075
CPCC04B28/14E04B9/045E04F13/0875E04F2290/046C04B14/42C04B24/38C04B2103/0068
Inventor 王霞滕伟广陈红霞朱清玮李帆张晓菲冉秀云贾严严戚婷婷肖文韬
Owner BEIJING NEW BUILDING MATERIALS PLC
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