High-strength fire-resistant paper surface gypsum board and preparation method thereof

A paper-faced gypsum board and refractory technology, which is applied in the direction of chemical instruments and methods, paper/cardboard layered products, hydraulically settable material layered products, etc., can solve the problem of not improving the strength and fire resistance of the board core, and increasing the production of gypsum boards Cost and other issues, to achieve the effect of excellent mechanical properties, excellent fire resistance, excellent fire resistance

Active Publication Date: 2020-09-01
CHINA NAT BUILDING MATERIALS TECHCAL INNOVATION & RES INST LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of higher-strength fire-resistant face paper cannot improve the strength and fire resistance of the board core, and will greatly increase the production cost of gypsum boards

Method used

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  • High-strength fire-resistant paper surface gypsum board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Among the raw materials of the gypsum board prepared in this example, the mass ratio of the mullite whiskers in the refractory material to the alkali-free glass fiber is 1:3, and the water reducer is polycarboxylate produced by Sika Water reducer 530P, the foaming agent is sodium lauryl sulfate produced by Futeng Chemical Industry and silicone resin polyether emulsion produced by Damai Chemical Industry, the mass ratio of the two is 1:0.8;

[0042] The length of the mullite whisker is 5 μm, and the aspect ratio is 20; the length of the glass fiber is 6 mm, and the single filament diameter of the glass fiber is 5 μm;

[0043] The specific surface area of ​​the gypsum clinker is 3200cm 2 / g;

[0044] The paper surface gypsum board that the present embodiment makes, concrete preparation steps are as follows:

[0045] 1) Weigh 100 parts of gypsum clinker, 0.1 part of water reducing agent, 0.3 part of modified tapioca starch, 0.03 part of foaming agent, 1.5 parts of refrac...

Embodiment 2

[0050] The paper-faced gypsum board prepared in this example, among its raw materials, the mass ratio of mullite whiskers in the refractory material to alkali-resistant glass fibers is 1:4, and the water reducer is UNFJW- 1 naphthalene-based water reducer, the foaming agent is sodium dodecylbenzenesulfonate produced by Futeng Chemical Industry and silicone resin polyether emulsion produced by Damai Chemical Industry, the mass ratio of the two is 1:1;

[0051] The length of the mullite whisker is 8 μm, and the aspect ratio is 25; the length of the glass fiber is 10 mm, and the diameter of the monofilament of the glass fiber is 5 μm;

[0052] The specific surface area of ​​the gypsum clinker is 3800cm 2 / g;

[0053] The paper surface gypsum board that the present embodiment makes, concrete preparation steps are as follows:

[0054] 1) Weigh 100 parts of gypsum clinker, 0.15 parts of water reducer, 0.5 part of modified corn starch, 0.04 parts of foaming agent, 3.2 parts of refr...

Embodiment 3

[0059] The paper surface gypsum board prepared in this example, among its raw materials, the mass ratio of mullite whiskers in the refractory material to medium-alkali glass fiber is 1:4, and the water reducing agent is sodium lignosulfonate produced by Zouyang Chemical Industry Water reducing agent, described whipping agent is the silicone resin polyether emulsion that the fatty alcohol polyoxyethylene ether sodium sulfate produced by Bangnuo Biotechnology Co., Ltd. and Damai Chemical Co., Ltd. produce, and the mass ratio of the two is 1:1;

[0060] The length of the mullite whisker is 10 μm, and the aspect ratio is 30; the length of the glass fiber is 20 mm, and the diameter of the monofilament of the glass fiber is 6 μm;

[0061] The specific surface area of ​​the gypsum clinker is 4000cm 2 / g;

[0062] The paper surface gypsum board that the present embodiment makes, concrete preparation steps are as follows:

[0063] 1) Weigh 100 parts of gypsum clinker, 0.2 part of wat...

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Abstract

The invention provides a high-strength fire-resistant paper surface gypsum board and a preparation method thereof. The paper surface gypsum board is prepared from the following raw materials in partsby mass: 100 parts of gypsum clinker; 0.1 to 0.3 part of a water reducing agent; 0.2 to 0.8 part of modified starch; 0.03 to 0.05 part of a foaming agent; 1.5 to 3.5 parts of a fire-resistant material; and 70 to 80 parts of water. The preparation method comprises the following steps that: raw materials are weighed, the raw materials are mixed with water, the mixture is added into a stirrer, and uniform mixing is performed to obtain gypsum slurry; the uniformly stirred gypsum slurry is made to be in lap joint with and firmly adhered to surface protection paper so as to be subjected to molding,so that a wet board can be obtained ; and after the wet board is solidified, the wet board enters a drying machine, and the dried wet board is a gypsum plaster board. According to the gypsum plaster board, the performance of the board core of the gypsum plaster board is improved, so that the gypsum board with higher strength and good fire resistance is obtained.

Description

technical field [0001] This article relates to the technical field of building materials, especially a high-strength fire-resistant paper-faced gypsum board and a preparation method thereof. Background technique [0002] Paper-faced gypsum board is a board made of building gypsum as the main raw material, mixed with appropriate amount of additives, and made of special cardboard as the surface protection. Gypsum board has the advantages of no pollution, strong processing performance, and simple construction method. [0003] Gypsum board is widely used in large buildings, such as hotels, hospitals, shopping malls, etc., so it requires high strength and fire resistance. At present, the gypsum partition wall boards used in wall products in the construction market are light in weight and low in strength. More than 70% of the strength comes from the protective paper. The fire resistance is average and cannot meet special purposes. At present, improving the strength and fire resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B13/00B32B13/08B32B29/00B32B37/00B32B38/00C04B28/14C04B111/28
CPCB32B29/00B32B13/08B32B13/00B32B37/00B32B38/164C04B28/145C04B2111/00551C04B2111/0062C04B2103/302C04B24/38C04B24/16C04B24/42C04B14/42C04B14/383
Inventor 张晓菲陈红霞周全光葛俊巧冉秀云
Owner CHINA NAT BUILDING MATERIALS TECHCAL INNOVATION & RES INST LIMITED
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