Foamed cement heat insulating material for exterior wall and preparation method thereof

A foamed cement and thermal insulation material technology, applied in the field of building materials, can solve the problems of low compressive strength and tensile strength, reduced service life, complicated production process, etc., and achieves good frost resistance, long service life and fire resistance. Good results

Inactive Publication Date: 2012-12-26
薛一冰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production process is complicated, and the compressive strength and tensile strength are low, the crack resistance is low, easy to break, and the service life is reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] formula:

[0026] 200 parts of sulfoaluminate cement, 0.3 parts of polycarboxylate superplasticizer, 5 parts of silicone waterproofing agent, 11 parts of hydrogen peroxide, 3 parts of calcium stearate, 2 parts of polyvinyl alcohol fiber, and 105 parts of water.

[0027] Preparation:

[0028] Mix 200 parts of sulfoaluminate cement and 3 parts of calcium stearate evenly, add 105 parts of warm water at 40°C and stir for 1-3 minutes, add 0.3 parts of polycarboxylate superplasticizer, 5 parts of silicone waterproofing agent, and stir for 1 -5min until the slurry is uniform, then slowly add 2 parts of polyvinyl alcohol fiber and stir for 1-3min until uniform;

[0029] Add 11 parts of hydrogen peroxide into the slurry, stir quickly for 0.2-2min, and the speed is 2500r / min. When the slurry just foams, quickly put the mixture into a mold prepared with an insulation board, and cover it with an insulation board for heat preservation and maintenance. , After 3-72h, demoulding, cu...

Embodiment 2

[0031] formula:

[0032] 150 parts of sulfoaluminate cement, 0.5 parts of naphthalene-based superplasticizer, 3 parts of silicone waterproofing agent, 7 parts of hydrogen peroxide, 0.5 parts of gum arabic, 0.5 parts of polypropylene fiber, and 60 parts of water.

[0033] Preparation:

[0034] Mix 150 parts of sulphoaluminate cement and 0.5 parts of gum arabic evenly, add 60 parts of warm water at 42°C, stir for 1-3 minutes, add 0.5 parts of naphthalene-based superplasticizer, 3 parts of silicone waterproofing agent, and stir for 1-5 minutes Until the slurry is uniform, then slowly add 0.5 parts of polypropylene fiber and stir for 1-3 minutes until uniform;

[0035] Add 7 parts of hydrogen peroxide into the slurry, stir quickly for 0.2-2min, and the speed is 3000r / min. When the slurry just foams, quickly put the mixture into a mold prepared by an insulation board, and cover it with an insulation board for heat preservation and maintenance. , After 3-72h, demoulding, cutting, ...

Embodiment 3

[0037] formula:

[0038] 250 parts of sulfoaluminate cement, 2 parts of silicone waterproofing agent, 13 parts of hydrogen peroxide, 1.75 parts of sodium dodecylsulfonate, 1.75 parts of polyvinyl alcohol fiber, and 135 parts of water.

[0039] Preparation:

[0040] Mix 250 parts of sulphoaluminate cement and 1.75 parts of sodium dodecylsulfonate evenly, add 135 parts of warm water at 38°C and stir for 1-3 minutes, add 2 parts of silicone waterproofing agent, and stir for 1-5 minutes until the slurry is uniform , then slowly add 1.75 parts of polyvinyl alcohol fiber and stir for 1-3min until uniform;

[0041] Add 13 parts of hydrogen peroxide to the slurry, stir quickly for 0.2-2min, and rotate at 3500r / min. When the slurry just foams, quickly put the mixture into a mold prepared by an insulation board, and cover it with an insulation board for heat preservation and maintenance. , After 3-72h, demoulding, cutting, heat preservation and maintenance.

[0042] The performance p...

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Abstract

The invention relates to a foamed cement heat insulating material for an exterior wall. The foamed cement heat insulating material is prepared by using the following raw materials in parts by weight: 150-250 parts of sulphoaluminate cement, 0-0.5 part of water reducing agent, 2-5 parts of waterproof agent, 7-13 part of foaming agent, 0.5-3 parts of foam stabilizer, 0.5-3 parts of fiber and 60-135 parts of water. The foamed cement heat insulating material for the exterior wall has the advantages of high economy and practicability, light weight, high strength, good heat insulating performance, high waterproof, fireproof and anti-freezing performance and long service life.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to a thermal insulation material for external walls and a preparation method thereof, in particular to a foamed cement thermal insulation material for external walls and a preparation method thereof. Background technique [0002] The thermal insulation materials used in traditional external wall insulation systems in my country are generally organic materials such as expanded polystyrene (EPS) or extruded polystyrene (XPS), but these materials have been exposed more and more during long-term use. There are many problems, such as easy aging and falling off, complicated maintenance and replacement, etc., especially in recent years, several major fire accidents caused by them have caused a large number of casualties and property losses to the country and society, and have been widely questioned. Therefore, The call for a new type of green, durable and flame-retardant thermal insulation ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/06
Inventor 薛一冰王崇杰管振忠刘巧玲贾立群
Owner 薛一冰
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