Ultra-light cement-based composite foaming material and preparation method thereof

Abstract

The invention relates to an ultra-light cement-based composite foaming material and a preparation method thereof. The preparation method comprises: uniformly stirring cement, fly ash, water reducer, foam pore regulator, pulp thickness regulator, fiber, foam stabilizing agent and mixing water to prepare pure pulp; diluting a physical foaming agent by 20 folds and making foam by a mechanical means;mixing the made foam into the stirred pure pulp, stirring uniformly again and obtaining foam pulp; adding a chemical foaming agent and a foaming accelerator into the obtained foam pulp, and pouring into a mold preheated to 40 DEG C; after the pouring is finished, curing the mold in a constant-temperature curing chamber at 40 DEG C, curing for 24 to 32 hours, demolding, and obtaining the ultra-light cement-based composite foaming material. In the invention, the foaming material is prepared by a method of combining physical foaming and chemical foaming; and the obtained product is low in density and very light, reaches a fireproof grade A, has a long service life and excellent comprehensive performance and is suitable to be widely used.

Description

technical field

[0001] The invention relates to a building thermal insulation material, in particular to an ultra-light cement-based composite foaming material and a preparation method thereof. Background technique

[0002] Using good thermal insulation technology and materials in construction and industry can often get twice the result with half the effort. Statistics show that for every ton of mineral wool insulation products used in construction, one ton of oil can be saved a year. For the insulation of industrial equipment and pipelines, the use of good insulation measures and materials can significantly reduce production energy consumption and costs, improve the environment, and at the same time have better economic benefits.

[0003] The foam insulation materials currently used in building insulation are mainly organic foam materials and inorganic foam materials. Organic foam insulation materials mainly include polystyrene foam, polyurethane rigid foam, etc. Inorgan...

Examples

Embodiment 1

[0073] Take 700 parts of Portland cement, 300 parts of fly ash, 2 parts of water reducing agent, 3 parts of cell regulator, 8 parts of slurry thickening regulator, 5 parts of fiber, and 20 parts of foam stabilizer and mix them evenly with a mixer. Then add 400 parts of water and stir for 3 minutes to form a pure slurry.

[0074] At the same time, 420 parts of the physical foam agent dilution were taken and stirred for 5 minutes by a paddle mixer at a speed of 1000 rpm to obtain a water-film foam.

[0075] Add the obtained water-film foam to the above-mentioned clean slurry and stir for 1 minute to obtain a foam slurry, then add 40 parts of a chemical foaming agent and 5 parts of a foaming accelerator to the foam slurry and mix them, after stirring for 30 seconds, pour into the mold, the pouring height is one-fifth of the mold height. Before pouring, the mold should complete the process of brushing the release agent to ensure that the edges, corners, corrugations, partitions, ...

Embodiment 2

[0079] The preparation method and steps are the same as in Example 1. The amounts of different components added are 800 parts of sulphoaluminate cement, 200 parts of fly ash, 3 parts of water reducer, 2 parts of cell regulator, and the slurry is thick. 7 parts of chemical regulator, 4 parts of fiber, 30 parts of foam stabilizer, 350 parts of mixing water, 6 parts of foam accelerator, 50 parts of chemical foaming agent, 25 parts of physical foaming agent, and 500 parts of physical foaming agent dilution water.

Embodiment 3

[0081] The preparation method and steps are the same as in Example 1. The amounts of different components added are 900 parts of sulphoaluminate cement, 100 parts of fly ash, 3 parts of water reducer, 2 parts of cell regulator, and the slurry is thick. 6 parts of chemical regulator, 3 parts of fiber, 40 parts of foam stabilizer, 300 parts of mixing water, 7 parts of foam accelerator, 60 parts of chemical foaming agent, 30 parts of physical foaming agent, and 600 parts of physical foaming agent dilution water.

technical field

[0001] The invention relates to a building thermal insulation material, in particular to an ultra-light cement-based composite foaming material and a preparation method thereof. Background technique

[0002] Using good thermal insulation technology and materials in construction and industry can often get twice the result with half the effort. Statistics show that for every ton of mineral wool insulation products used in construction, one ton of oil can be saved a year. For the insulation of industrial equipment and pipelines, the use of good insulation measures and materials can significantly reduce production energy consumption and costs, improve the environment, and at the same time have better economic benefits.

[0003] The foam insulation materials currently used in building insulation are mainly organic foam materials and inorganic foam materials. Organic foam insulation materials mainly include polystyrene foam, polyurethane rigid foam, etc. Inorgan...

Examples

Embodiment 1

[0073] Take 700 parts of Portland cement, 300 parts of fly ash, 2 parts of water reducing agent, 3 parts of cell regulator, 8 parts of slurry thickening regulator, 5 parts of fiber, and 20 parts of foam stabilizer and mix them evenly with a mixer. Then add 400 parts of water and stir for 3 minutes to form a pure slurry.

[0074] At the same time, 420 parts of the physical foam agent dilution were taken and stirred for 5 minutes by a paddle mixer at a speed of 1000 rpm to obtain a water-film foam.

[0075] Add the obtained water-film foam to the above-mentioned clean slurry and stir for 1 minute to obtain a foam slurry, then add 40 parts of a chemical foaming agent and 5 parts of a foaming accelerator to the foam slurry and mix them, after stirring for 30 seconds, pour into the mold, the pouring height is one-fifth of the mold height. Before pouring, the mold should complete the process of brushing the release agent to ensure that the edges, corners, corrugations, partitions, ...

Embodiment 2

[0079] The preparation method and steps are the same as in Example 1. The amounts of different components added are 800 parts of sulphoaluminate cement, 200 parts of fly ash, 3 parts of water reducer, 2 parts of cell regulator, and the slurry is thick. 7 parts of chemical regulator, 4 parts of fiber, 30 parts of foam stabilizer, 350 parts of mixing water, 6 parts of foam accelerator, 50 parts of chemical foaming agent, 25 parts of physical foaming agent, and 500 parts of physical foaming agent dilution water.

Embodiment 3

[0081] The preparation method and steps are the same as in Example 1. The amounts of different components added are 900 parts of sulphoaluminate cement, 100 parts of fly ash, 3 parts of water reducer, 2 parts of cell regulator, and the slurry is thick. 6 parts of chemical regulator, 3 parts of fiber, 40 parts of foam stabilizer, 300 parts of mixing water, 7 parts of foam accelerator, 60 parts of chemical foaming agent, 30 parts of physical foaming agent, and 600 parts of physical foaming agent dilution water.

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