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Manufacturing process of fireproof door core plate containing magnesium sulfate

A fire door core board and manufacturing process technology, applied in fire doors, door leaves, windows/doors, etc., can solve the problems of poor integrity of fire door core boards, affecting the quality of fire doors, short fire resistance limit time, etc., reaching the fire resistance limit time Long, promote foaming, the effect of large foaming ratio

Inactive Publication Date: 2018-07-31
HEFEI YIZHI DOORS & WINDOWS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum silicate wool board, rock wool, slag wool or glass wool fire door panels have problems such as poor integrity of the fire door core board, short fire resistance limit time, poor mechanical properties, easy deformation, high comprehensive cost, and inconvenient use; Although the core board of the rock fire door has good fire resistance, the board is formed by strong alkaline adhesives such as water glass, which is corrosive and has poor strength and toughness. The product is easily damaged during production and use, and its stability is poor. The safety factor is not high, which seriously affects the quality of fire doors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of fire door core plate manufacturing process containing magnesium sulfate provided by this embodiment, said method comprises the following steps:

[0027] Step 1. Prepare foaming agent foam: dilute the protein-type foaming agent with water, and the dilution factor is 20 times, and prepare foaming agent foam by a special air foaming machine;

[0028] Step 2, preparing mixed slurry: preparing gypsum mixed slurry containing magnesium sulfate, adding the mixed slurry to water, and stirring evenly;

[0029] Step 3, preparing foaming mixed slurry: mixing foaming agent foam into the gypsum mixed slurry containing magnesium sulfate;

[0030] Step 4. Board making: Pour the evenly stirred foamed mixed slurry into the fire door core plate mold. When the slurry reaches the height of the middle part of the mold, spread the pre-cut mesh cloth, and mold and demould after 14 hours. It can be maintained naturally at room temperature.

[0031] As a preferred version, the prepar...

Embodiment 2

[0043] A kind of fire door core plate manufacturing process containing magnesium sulfate provided by this embodiment, said method comprises the following steps:

[0044] Step 1. Prepare foaming agent foam: dilute the protein-type foaming agent with water, and the dilution factor is 12 times, and prepare foaming agent foam by a special air foaming machine;

[0045] Step 2, preparing mixed slurry: preparing gypsum mixed slurry containing magnesium sulfate, adding the mixed slurry to water, and stirring evenly;

[0046] Step 3, preparing foaming mixed slurry: mixing foaming agent foam into the gypsum mixed slurry containing magnesium sulfate;

[0047] Step 4. Board making: Pour the evenly stirred foamed mixed slurry into the fire door core plate mold. When the slurry reaches the height of the middle part of the mold, spread the pre-cut mesh cloth, and mold and demould after 14 hours. It can be maintained naturally at room temperature.

[0048] As a preferred version, the prepar...

Embodiment 3

[0060] A kind of fire door core plate manufacturing process containing magnesium sulfate provided by this embodiment, said method comprises the following steps:

[0061] Step 1. Prepare foaming agent foam: dilute the protein-type foaming agent with water, and the dilution factor is 17 times, and prepare foaming agent foam by a special air foaming machine;

[0062] Step 2, preparing mixed slurry: preparing gypsum mixed slurry containing magnesium sulfate, adding the mixed slurry to water, and stirring evenly;

[0063] Step 3, preparing foaming mixed slurry: mixing foaming agent foam into the gypsum mixed slurry containing magnesium sulfate;

[0064] Step 4. Board making: Pour the evenly stirred foamed mixed slurry into the fire door core plate mold. When the slurry reaches the height of the middle part of the mold, spread the pre-cut mesh cloth, and mold and demould after 13 hours. It can be maintained naturally at room temperature.

[0065] As a preferred version, the prepar...

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Abstract

The invention belongs to the technical field of fireproof door core plates, and provides a manufacturing process of a fireproof door core plate containing magnesium sulfate. According to the manufacturing process, the fireproof door core plate is prepared from gypsum used as a main raw material, and the magnesium sulfate, light calcinesia magnesia powder and chopped polyester fibers which are taken as auxiliary materials; the fireproof door core plate is prepared by carrying out processes such as foaming and plate making on the raw materials; the prepared fireproof door core plate has a dry density of 350-420kg / m<3>, an absolutely dry compressive strength of not less than 1.0MPa and an absolutely dry breaking strength of not less than 0.5MPa, thus meeting the fireproofing grade A1 of GB8624-2006 Classification of combustion performance of Building Materials and Products; the prepared fireproof door core plate is long in fire endurance time, good in mechanical properties, high in strength and high in safety factor, and is not easily deformed.

Description

technical field [0001] The invention belongs to the technical field of fire door core boards, and in particular relates to a manufacturing process of fire door core boards containing magnesium sulfate. Background technique [0002] The fire door is composed of skeleton, door core filling material and fireproof hardware. The filling material of the door core board is the core material of the fire door, and its quality and performance are particularly important. The filling material of the door core board traditionally uses materials such as rock wool, aluminum silicate wool, mineral wool, perlite board, foamed magnesium oxychloride cement board, and foamed cement board. Aluminum silicate wool board, rock wool, slag wool or glass wool fire door panels have problems such as poor integrity of the fire door core board, short fire resistance limit time, poor mechanical properties, easy deformation, high comprehensive cost, and inconvenient use; Although the core board of the rock...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/30C04B38/10C04B24/38C04B24/14C04B24/16C04B24/26E06B5/16E06B3/70C04B103/42C04B111/28
CPCC04B28/30C04B40/0039C04B2103/42C04B2111/28C04B2201/20C04B2201/50E06B3/7015E06B5/16E06B2003/7023C04B22/142C04B14/304C04B11/032C04B16/0683C04B38/10C04B24/14C04B24/04C04B2103/48C04B24/16C04B24/10C04B24/383C04B24/38C04B24/2652
Inventor 汪中奇
Owner HEFEI YIZHI DOORS & WINDOWS CO LTD