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Gypsum-based fireproof door core plate and preparation method thereof

A fire-resistant door core board and gypsum-based technology, which is applied to fire-resistant doors, door leaves, ceramic products, etc., can solve the problems of reduced activity, reduced product quality, low quality, 8-12 hours of demoulding in summer, and 24 hours of demoulding in winter. , to achieve high fire resistance, high production efficiency and good stability

Inactive Publication Date: 2020-10-30
瓮福化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The activity of magnesite materials will decrease with the storage time and environmental changes. There are many small and medium-sized enterprises in the domestic fire door market, and many enterprises cannot control the storage conditions well, resulting in lower product quality.
Moreover, the production efficiency of the magnesite fireproof door core board is low, and the demoulding takes 8-12 hours in summer and 24 hours in winter

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A gypsum-based fireproof door core board and its preparation method. The following raw materials are weighed in proportion: 500 parts of α high-strength gypsum, 1.5 parts of fiber, 5 parts of foaming agent, 1.2 parts of surfactant, 5 parts of tertiary acetate acrylic emulsion, PVA0 .5 parts, 230 parts of water.

[0039] The above-mentioned α-type high-strength gypsum is α-type high-strength gypsum prepared from phosphogypsum after washing with water by dynamic autoclaving; it is produced by Wengfu Chemical Technology Co., Ltd., and its brand is a40; its initial setting time is 18 minutes, and its final setting time is 18 minutes. The coagulation time is 26min, the 2h flexural strength is 5.6MPa, and the drying compressive strength is 47MPa;

[0040] Above-mentioned fiber is polypropylene fiber, and its length is 10-12mm;

[0041] The above foaming agent is purchased from Henan Huatai New Material Technology Co., Ltd. HTW-1;

[0042] Above-mentioned surfactant is sodiu...

Embodiment 2

[0048] A gypsum-based fire door core board and its preparation method. The following raw materials are weighed in proportion: 400 parts of α high-strength gypsum, 0.2 parts of fiber, 7 parts of foaming agent, 1.8 parts of surfactant, 8 parts of tertiary acetic acid acrylic emulsion, PVA0 .8 parts, 190 parts of water;

[0049] The above-mentioned α-type high-strength gypsum is α-type high-strength gypsum prepared by using the washed phosphogypsum as raw material by dynamic autoclaving. The initial setting time is 19min, the final setting time is 27min, the 2h flexural strength is 5.2MPa, and the drying compressive strength is 45MPa.

[0050] The above-mentioned fibers are polyester fibers.

[0051] The above foaming agent is a long-acting four-in-one foaming agent purchased from Jinan Meijiatu New Material Development Co., Ltd.

[0052] The above-mentioned surfactant is AES fatty alcohol polyoxyethylene ether sodium sulfate purchased from Guangzhou Chengyi Chemical Co., Ltd. ...

Embodiment 3

[0058] A gypsum-based fireproof door core board and its preparation method. The following raw materials are weighed in proportion: 450 parts of α high-strength gypsum, 0.9 parts of fiber, 6 parts of foaming agent, 1.5 parts of surfactant, 9 parts of tertiary acetate acrylic emulsion, PVA 0.9 parts, 220 parts of water;

[0059] The above-mentioned α-type high-strength gypsum is α-type high-strength gypsum prepared by using the washed phosphogypsum as raw material by dynamic autoclaving. The initial setting time is 13min, the final setting time is 19min, the 2h flexural strength is 6.4MPa, and the compressive strength is 52MPa.

[0060] The aforementioned fibers are glass fibers.

[0061] The foaming agent mentioned above is a cement foaming agent purchased from Hejin Hangcheng Building Materials Co., Ltd.

[0062] The above-mentioned surfactant is AESA fatty alcohol polyoxyethylene ether ammonium sulfate purchased from Guangzhou Nanjia Chemical Technology Co., Ltd.

[0063] ...

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Abstract

The invention provides a gypsum-based fireproof door core plate. The plate is characterized by comprising the following raw materials in parts by weight: 400-500 parts of phosphogypsum-based alpha high-strength gypsum, 0.1-1.5 parts of fibers, 5-8 parts of a foaming agent, 1-2 parts of a surfactant, 5-10 parts of an emulsion, 0.5-1 part of PVA and 180-250 parts of water. The dry density of the prepared fireproof door core plate is 280-400 kg / m<3>, wherein alpha-type high-strength gypsum uses the industrial byproduct phosphogypsum as a raw material, so the waste is turned into the wealth. The gypsum-based fireproof door core plate has the characteristics of good stability, high fire resistance, no corrosion to steel plates and high production efficiency, and effectively overcomes the defects of moisture absorption and low production efficiency of existing magnesite materials.

Description

technical field [0001] The invention relates to the technical field of fire door core board production, in particular to a gypsum-based fire door core board and a preparation method thereof. Background technique [0002] The fire door core board plays a major role in the fire resistance and heat insulation performance of fire doors. It is a key item for fire door engineering inspection and acceptance. It is widely used in civil buildings and other construction fields, and can effectively restrain personal or public property damage caused by fire. loss. [0003] In recent years, lightweight foamed magnesite materials have been widely used in fire door core panels on the market. Magnesite fire door core board has the advantages of low bulk density, good fire performance, light weight, high strength and low cost. However, its raw material is magnesite, which may face the risk of banning mining of raw materials in the future. Magnesite material belongs to alkali metal salts. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14E06B3/70E06B5/16C04B111/40C04B111/28
CPCC04B28/146E06B5/16E06B3/70C04B2201/50C04B2201/20C04B2111/40C04B2111/28C04B16/0633C04B24/20C04B24/24C04B24/2623C04B2103/42C04B38/10C04B38/0067C04B16/0683C04B24/166C04B14/42
Inventor 薛绍秀张骞张涛胡宏韩伟张哲睿龚颖石家华
Owner 瓮福化工科技有限公司
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