Magnesium phosphate cement-base porous material and preparation method thereof

A magnesium phosphate cement and porous material technology, applied in the field of inorganic thermal insulation materials, can solve the problems of high foaming process requirements, low basalt activity, poor fire resistance, etc., and achieves good acid and alkali erosion resistance, good volume stability, crystallinity high energy effect

Inactive Publication Date: 2015-04-29
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the polystyrene particles in the polystyrene board are flammable, the foam board can only be flame-retardant and fire-resistant, with the highest grade of B1. The high temperature of the extruded board production process leads to the decomposition of some flame retardants, resulting in poor fire resistance.
The activity of basalt in rock wool board is low, resulting

Method used

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  • Magnesium phosphate cement-base porous material and preparation method thereof
  • Magnesium phosphate cement-base porous material and preparation method thereof
  • Magnesium phosphate cement-base porous material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A preparation method of a magnesium phosphate cement-based porous material, the raw materials and parts by mass are composed of: 25 parts by mass of dead-burned magnesia, 25 parts by mass of ammonium dihydrogen phosphate, 10 parts by mass of borax, 50 parts by mass of fly ash, metal zinc Powder 0.6 parts by mass, and water 12 parts by mass; grind dead burnt magnesia to 10-50 μm (particle size, the same below), fly ash to 5-50 μm, and ammonium dihydrogen phosphate to 30-50 μm 150 μm, spare.

[0026]The method for preparing magnesium phosphate cement-based porous material is as follows: mix dead-burned magnesia, ammonium dihydrogen phosphate, borax, fly ash, and metal zinc powder evenly to form a mixed powder; put the mixed powder into a container with a stirring device Add water and start timing while adding water, according to slow stirring for 15s (stirring speed is 140-150 rpm), fast stirring for 1.5min (stirring speed is 275-295 rpm), stop (stop stirring ) for 15s, ...

Embodiment 2

[0028] A method for preparing a magnesium phosphate cement-based porous material. The raw materials and parts by mass are composed of: 35 parts by mass of dead-burned magnesia, 35 parts by mass of ammonium dihydrogen phosphate, 3 parts by mass of borax, 30 parts by mass of quartz sand, and metal iron powder 1 part by mass, and 16 parts by mass of water; grind dead burnt magnesia to 10-50 μm (particle size, the same below), grind fly ash to 5-50 μm, and ammonium dihydrogen phosphate to 30-150 μm ,spare.

[0029] The method for preparing magnesium phosphate cement-based porous material is as follows: mix dead-burned magnesia, ammonium dihydrogen phosphate, borax, quartz sand, and metal iron powder evenly to form a mixed powder; put the mixed powder into a container with a stirring device , then add water and start timing while adding water, according to slow stirring for 15s (stirring speed is 140-150 rpm), fast stirring for 1.5min (stirring speed is 275-295 rpm), stop (stop sti...

Embodiment 3

[0031] A method for preparing a magnesium phosphate cement-based porous material. The raw materials and parts by mass are composed of: 25 parts by mass of dead-burned magnesia, 25 parts by mass of ammonium dihydrogen phosphate, 2.5 parts by mass of borax, 30 parts by mass of fly ash, and quartz sand 20 parts by mass, 1 part by mass of metal zinc powder, and 13 parts by mass of water; grind dead-burned magnesia sand to 10-50 μm (particle size, the same below), fly ash and quartz sand to 5-50 μm respectively, Grind the ammonium dihydrogen phosphate to 30-150 μm and set aside.

[0032] The method for preparing magnesium phosphate cement-based porous material is as follows: mix dead-burned magnesia, ammonium dihydrogen phosphate, borax, fly ash, quartz sand, and metal zinc powder evenly to form a mixed powder; put the mixed powder into a stirring In the container of the device, add water and start timing while adding water, according to slow stirring for 15s (stirring speed is 140...

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Abstract

The invention discloses a magnesium phosphate cement-base porous material and a preparation method thereof. The preparation method is characterized by comprising the following steps: taking the following raw materials in parts by mass: 5-40 parts of dead burnt magnesite, 10-35 parts of ammonium dihydrogen phosphate, 2-15 parts of borax, 10-60 parts of fly ash, 10-60 parts of quartz sand, 0.3-1 part of metallic zinc or iron powder and 5-20 parts of water; uniformly mixing the dead burnt magnesite, ammonium dihydrogen phosphate, borax, fly ash, quartz sand and metallic zinc or iron powder to obtain a powder mixture; adding the powder mixture into a container with a stirring device, adding water while starting time keeping, stirring slowly for 15-30 seconds, stirring quickly for 1.5-3 minutes, stopping stirring for 15 seconds, and stirring quickly for 3-5 minutes to obtain a slurry; and forming the slurry, and curing to obtain the magnesium phosphate cement-base porous material. The porous material disclosed by the invention has the advantages of early strength, quick hardening, favorable acid/alkali attack resistance, favorable thermal-insulation property, low carbon and environment friendliness, and is mainly used as a thermal-insulation material.

Description

technical field [0001] The invention belongs to inorganic thermal insulation materials, and relates to a magnesium phosphate cement-based porous material and a preparation method thereof. The invention uses magnesium phosphate cement to prepare phosphate cement-based porous material in a metal air-entraining manner, and the prepared porous material product is mainly used as thermal insulation material. Background technique [0002] Thermal insulation materials can be used to reduce indoor and outdoor heat loss and effectively reduce air-conditioning loads, and are an important part of building energy conservation. With the improvement of the country's requirements for building insulation materials, inorganic insulation materials have a good development prospect. In the prior art, building heat insulation materials mainly include polystyrene board, rock wool board and ordinary foamed concrete. It is an inorganic fiberboard made of high-temperature melting as the main materi...

Claims

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Application Information

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IPC IPC(8): C04B28/34C04B38/02
Inventor 赖振宇卢忠远吕淑珍段新勇
Owner SOUTHWEAT UNIV OF SCI & TECH
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