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Preparation process of waterproof fiber gypsum board

A preparation process and technology of gypsum board, which is applied in the field of decorative materials, can solve the problems that fiber gypsum board does not have waterproofness, etc., and achieve the effects of excellent waterproof and moisture resistance, improved mechanical strength, and improved waterproof and moisture resistance

Inactive Publication Date: 2019-11-22
李振洋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the invention improves the compressive strength of fiber gypsum board, fiber gypsum board is not waterproof

Method used

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  • Preparation process of waterproof fiber gypsum board
  • Preparation process of waterproof fiber gypsum board

Examples

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Comparison scheme
Effect test

Embodiment 1

[0032] A preparation process for waterproof fiber gypsum board, comprising the following steps:

[0033] (1) Preparation of materials:

[0034] (1) In parts by weight: Weigh 20 parts of modified starch, 18 parts of modified poplar fiber, 2 parts of sodium citrate, 0.6 parts of calcium lignosulfonate and 20-30 parts of water and put them into a hydropulper Stir in the middle to form a raw material slurry, and then pump the raw material slurry into the slurry storage tank for standby;

[0035] Wherein the preparation process of modified poplar fiber is:

[0036] ① First add 50 parts of water to the reaction kettle, add 0.6 parts of alkylphenol polyoxyethylene ether into the container under stirring conditions and emulsify, then heat the emulsified mixture to 60°C, and then add 10 parts Stearic acid is stirred until completely melted, then 10 parts of calcium hydroxide powder is added to the mixed solution containing stearic acid, stirred for 2 minutes, and then incubated for 2...

Embodiment 2

[0048] A preparation process for waterproof fiber gypsum board, comprising the following steps:

[0049] (1) Preparation of materials:

[0050] (1) In parts by weight: Weigh 27 parts of modified starch, 20 parts of modified poplar fiber, 4 parts of sodium carboxymethyl cellulose, 0.9 parts of sodium sulfamate and 25 parts of water and put them into a hydropulper Stir in the middle to form a raw material slurry, and then pump the raw material slurry into the slurry storage tank for standby;

[0051] Wherein the preparation process of modified poplar fiber is:

[0052] ① First add 70 parts of water to the reaction kettle, add 0.8 parts of alkylphenol polyoxyethylene ether into the container under stirring conditions and emulsify, then heat the emulsified mixture to 65 ° C, then add 12 parts Stearic acid is stirred until completely melted, then 11 parts of calcium hydroxide powder are added to the mixed solution containing stearic acid, stirred for 4 minutes and then kept for 2...

Embodiment 3

[0064] A preparation process for waterproof fiber gypsum board, comprising the following steps:

[0065] (1) Preparation of materials:

[0066] (1) In parts by weight: Weigh 35 parts of modified starch, 22 parts of modified poplar fiber, 5 parts of sodium carboxymethyl cellulose, 1.4 parts of sodium polyacrylate and 30 parts of water and put them into a hydropulper Stir into raw material slurry, then pump the raw material slurry into the slurry storage tank for standby;

[0067] Wherein the preparation process of modified poplar fiber is:

[0068] ① First add 100 parts of water to the reaction kettle, add 1.2 parts of alkylphenol polyoxyethylene ether into the container under stirring conditions and emulsify, then heat the emulsified mixture to 70°C, then add 15 parts Stearic acid is stirred until completely melted, then 12 parts of calcium hydroxide powder are added to the mixed solution containing stearic acid, stirred for 5 minutes, and then incubated for 30 minutes to ge...

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Abstract

The invention mainly relates to the technical field of fireproof materials, in particular to a preparation process of a waterproof fiber gypsum board. The preparation process comprises the following steps of (1) preparing materials, (2) stirring, (3) forming and (4) spraying. The preparation process is simple, is low in cost, and accords with the environment-friendly requirement. By improving andoptimizing the production raw materials and the process, the gypsum board has the excellent water resistance and moisture resistance, the structure is more compact, and the mechanical strength of thegypsum board is also improved to a certain extent, so that the gypsum board is not prone to buckling deformation or falling off. Because of the improvement of the waterproof and moisture-resistant performance, the service life of the gypsum board is prolonged to a certain extent, and the gypsum board is suitable for popularization and application.

Description

technical field [0001] The invention mainly relates to the technical field of decorative materials, in particular to a preparation process of a waterproof fiber gypsum board. Background technique [0002] Gypsum is a common inorganic cementitious building material, which belongs to air-hardening cementitious materials, and is one of the three major cementitious materials (gypsum, cement, lime). It has been used as a building material long ago. Compared with other building materials, gypsum and its products have many advantages such as simple molding process, low energy consumption for material production, wide source of raw materials, good decorative effect, and no pollution to the environment, etc., and are used in various industries. Since gypsum contains a large amount of crystal water, when the product is exposed to fire, the gypsum will lose the crystal water, which has the function of flame retardancy. The existence of a large number of micropores in the gypsum harden...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B41/50C04B20/02C04B111/27C04B18/26
CPCC04B20/023C04B28/144C04B41/009C04B41/5014C04B2111/27C04B2201/50C04B18/265C04B24/38C04B24/06C04B24/18C04B22/147C04B38/10C04B2103/12C04B41/4961C04B41/4905Y02W30/91
Inventor 李振洋
Owner 李振洋
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