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A kind of foam cement and preparation method thereof

A technology of foamed cement and cement, which is applied in the direction of clay preparation equipment, cement mixing equipment, chemical instruments and methods, etc., which can solve problems such as large batches and potential safety hazards, and achieve less cracking of bubble walls, smooth and full hole walls, and bubble distribution uniform effect

Active Publication Date: 2022-06-28
SHANDONG XIEHE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large batch size in factory construction, the addition of aluminum powder will also produce a large amount of hydrogen. At the same time, due to the oxygen generated by the reaction of hydrogen peroxide, there is a large safety hazard in industrial production. Therefore, how to solve hydrogen peroxide The problem of air bubbles or looking for alternative foam materials is the key research direction of existing foam cement

Method used

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  • A kind of foam cement and preparation method thereof
  • A kind of foam cement and preparation method thereof
  • A kind of foam cement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, this embodiment provides a kind of foamed cement

[0030] First, weigh 80 parts of Portland cement, 10 parts of porous ceramic powder, 5 parts of hydrogen peroxide foaming agent, and 0.3 parts of manganese oxide foaming catalyst according to parts by weight; 5 parts of coagulant, 2 parts of calcium stearate foam stabilizer modified by nano intercalation technology; 4 parts of microbial foaming agent; 37 parts of water. Porous ceramic powder is the existing discarded porous ceramics processed into particles with a particle size of 325 mesh, which is the common particle size of existing Portland cement. Of course, it can also be larger, and the maximum is not more than 180 mesh. .

[0031] The weighed cement, porous ceramic powder and foam stabilizer are added to the mixing kettle for dry mixing. The purpose of dry mixing is to fully mix the cement, porous ceramic powder and foam stabilizer. Nano intercalation technology is selected. Modified calcium stear...

Embodiment 2

[0045] Embodiment 2, this embodiment provides a kind of foamed cement

[0046] Compared with Example 1, the ratio of this example changed, 120 parts of Portland cement, 20 parts of porous ceramic powder, 8 parts of hydrogen peroxide foaming agent, 0.5 part of manganese oxide foaming catalyst; sodium carbonate and triethanolamine Mixed according to mass ratio of 10:1, 8 parts of coagulant, 4 parts of calcium stearate foam stabilizer modified by nano intercalation technology; 16 parts of microbial foaming agent; and 47 parts of water.

[0047] The dry apparent density of the test block is 159.6kg / m 3 , 28d compressive strength 0.46MPa, thermal conductivity 0.040W m -1 K -1 .

Embodiment 3

[0048] Embodiment 3, this embodiment provides a kind of foamed cement

[0049] Compared with Example 1, the ratio of this example changed, 100 parts of Portland cement, 15 parts of porous ceramic powder, 6 parts of hydrogen peroxide foaming agent, 0.4 parts of manganese oxide foaming catalyst; sodium carbonate and triethanolamine According to the mass ratio of 10:1, 6 parts of coagulant, 3 parts of calcium stearate foam stabilizer modified by nano intercalation technology; 10 parts of microbial foaming agent; 45 parts of water.

[0050] The dry apparent density of the test block is 158.9kg / m 3 , 28d compressive strength 0.47MPa, thermal conductivity 0.039W m -1 K -1 .

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Abstract

The invention belongs to the technical field of production and application of building materials, and relates to foamed cement, in particular to a foamed cement and a preparation method thereof. According to parts by weight, it includes the following components: 80-120 parts of cement; 10-20 parts of porous ceramic powder; 5-8 parts of hydrogen peroxide foaming agent; 0.3-0.5 parts of foaming catalyst; 8 parts; 2-4 parts of foam stabilizer; 41-63 parts of microbial foaming agent and water, wherein the mass ratio of microbial foaming agent and water is 1-3:10. The invention provides a foamed cement and a preparation method thereof. By utilizing the organic combination of a chemical foaming agent and a biological foaming agent, the technical problems existing in the existing hydrogen peroxide foaming are effectively solved, and the prepared foamed cement has bubbles The distribution is more uniform, the pore wall is smooth and full, and the bubble wall is less cracked.

Description

technical field [0001] The invention belongs to the technical field of production and application of building materials, relates to foamed cement, in particular to a foamed cement and a preparation method thereof. Background technique [0002] In recent years, as organic thermal insulation materials are prone to cracking, have poor durability, are flammable, and generate toxic gases when burned, their market share and usage have decreased significantly. As an ideal alternative, inorganic thermal insulation materials are favored for their outstanding advantages of high safety. As a kind of inorganic thermal insulation material, foamed cement has the advantages of sound absorption and sound insulation, long service life, non-toxic and other advantages in addition to light weight and small thermal conductivity. Therefore, foamed cement is expected to be widely used in the building insulation industry. [0003] The existing foamed cement mainly includes five kinds of materials...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04B28B1/50B28C5/38C04B38/02C04B111/40
CPCC04B28/04C04B38/02B28C5/388B28B1/50C04B2111/40C04B2201/50C04B2201/32C04B2201/20C04B18/027C04B22/068C04B2103/12C04B2103/48C04B22/06C04B2103/0001
Inventor 王玉镯高英任丽黄颖李雪玲赵彦彦房其娟刘伟刘媛媛
Owner SHANDONG XIEHE UNIV