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A foamed magnesite cement composite insulation plate

A technology of magnesite cement and composite thermal insulation, applied in thermal insulation, building components, applications, etc., can solve the problems of high dry density and thermal conductivity, low strength, and restrictions on the popularization and application of foamed magnesite cement insulation boards, and achieve dry density And the effect of low thermal conductivity, high strength and simple preparation process

Inactive Publication Date: 2017-09-26
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the foamed magnesite cement insulation board has the problems of low strength, high dry density and high thermal conductivity, which seriously restricts the popularization and application of the foamed magnesite cement insulation board.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A foamed magnesite cement composite insulation board is characterized in that it is composed of a hollow cavity and foamed Lingmei cement.

[0016] The hollow cavity is composed of the following raw materials in parts by weight: 20 parts of Portland cement, 6 parts of sulphoaluminate cement, 10 parts of wood pulp, 25 parts of quicklime, and 50 parts of fly ash.

[0017] The foamed magnesite cement is composed of the following raw materials in parts by weight: 50 parts of light-burned magnesia, 20 parts of brine, 0.5 parts of ammonium sulfate, 2.5 parts of sodium bicarbonate, 3 parts of pulp waste liquid, 5 parts of quicklime, 20 parts of zeolite share.

[0018] Further, the degree of loosening of the wood pulp is 60%.

[0019] Further, the specific gravity of the brine is 1.37g / cm 3 .

[0020] Further, the pulp waste liquid is alkaline pulp waste liquid.

[0021] Further, the zeolite is a natural high silica zeolite, and its chemical composition is SiO 2 The conten...

Embodiment 2

[0025] A foamed magnesite cement composite insulation board is characterized in that it is composed of a hollow cavity and foamed Lingmei cement.

[0026] The hollow cavity is composed of the following raw materials in parts by weight: 25 parts of Portland cement, 4 parts of sulphoaluminate cement, 8 parts of wood pulp, 20 parts of quicklime, and 40 parts of fly ash.

[0027] The foamed magnesite cement is composed of the following raw materials in parts by weight: 60 parts of light-burned magnesia, 40 parts of brine, 1 part of ammonium sulfate, 1 part of sodium bicarbonate, 5 parts of pulp waste liquid, 8 parts of quicklime, 15 parts of zeolite share.

[0028] Further, the degree of loosening of the wood pulp is 53%.

[0029] Further, the specific gravity of the brine is 1.25g / cm 3 .

[0030] Further, the pulp waste liquid is alkaline pulp waste liquid.

[0031] Further, the zeolite is a natural high silica zeolite, and its chemical composition is SiO 2 The content is 70...

Embodiment 3

[0035] A foamed magnesite cement composite insulation board is characterized in that it is composed of a hollow cavity and foamed Lingmei cement.

[0036] The hollow cavity is composed of the following raw materials in parts by weight: 35 parts of Portland cement, 2 parts of sulphoaluminate cement, 5 parts of wood pulp, 10 parts of quicklime, and 30 parts of fly ash.

[0037] The foamed magnesite cement is composed of the following raw materials in parts by weight: 70 parts of light-burned magnesia, 50 parts of brine, 2 parts of ammonium sulfate, 0.5 parts of sodium bicarbonate, 7 parts of pulp waste liquid, 10 parts of quicklime, and 10 parts of zeolite. share.

[0038] Further, the degree of loosening of the wood pulp is 45%.

[0039] Further, the specific gravity of the brine is 1.15g / cm 3 .

[0040] Further, the pulp waste liquid is alkaline pulp waste liquid.

[0041] Further, the zeolite is a natural high silica zeolite, and its chemical composition is SiO 2 The con...

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PUM

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Abstract

A foamed magnesite cement composite insulation plate is disclosed. The composite insulation plate includes a hollow cavity and foamed magnesite cement. Raw materials of the hollow cavity comprise, by weight, 20-35 parts of Portland cement, 2-6 parts of sulfoaluminate cement, 5-10 parts of wood pulp, 10-25 parts of quick lime and 30-50 parts of fly ash. Raw materials of the foamed magnesite cement include, by weight, 50-70 parts of light-calcined magnesia, 20-50 parts of brine, 0.5-2 parts of ammonium sulfate, 0.5-2.5 parts of sodium bicarbonate, 3-7 parts of waste paper pulp, 5-10 parts of quick lime, and 10-20 parts of zeolite. The insulation plate has high strength, a low dry density and a low heat conductivity coefficient. Popularization and application of the foamed magnesite cement insulation plate are effectively promoted.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a foamed magnesite cement composite thermal insulation board. Background technique [0002] The foamed cement insulation board has a simple preparation process and low cost, and is a widely used energy-saving and thermal insulation building material. The main component of magnesite cement is light-burned magnesia, which is obtained by calcining magnesite at a temperature of 600-850°C. my country's magnesite reserves are about 4 billion tons, ranking first in the world, accounting for 80% of the total ore. Therefore, the development and utilization of magnesite has huge economic and social benefits. However, the foamed magnesite cement insulation board has the problems of low strength, high dry density and high thermal conductivity, which seriously restricts the popularization and application of the foamed magnesite cement insulation board. Contents of the invention [0003]...

Claims

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Application Information

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IPC IPC(8): C04B28/06C04B28/10C04B38/02C04B38/00E04B1/80
CPCC04B28/06C04B28/105C04B2111/40C04B2201/20C04B2201/32C04B2201/50E04B1/80C04B7/02C04B18/08C04B18/26C04B22/064C04B38/00C04B22/12C04B22/147C04B22/10C04B18/241C04B14/047C04B38/02
Inventor 李来波芦令超王海英
Owner UNIV OF JINAN