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Heat-insulation mortar taking ettringite colloid as template agent and preparation method for heat-insulation mortar

A technology of ettringite colloid and thermal insulation mortar, which can be used in ceramic products, solid waste management, and other household appliances, etc., can solve the problem of high thermal conductivity of thermal insulation mortar, and achieve good fire resistance, high stability, and good material compatibility Effect

Active Publication Date: 2016-02-10
浙江圣润纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disclosure and application of the above patents are conducive to promoting the development of my country's thermal insulation mortar industry, but the problem of high thermal conductivity of thermal insulation mortar has not been effectively resolved. Therefore, the present invention proposes a new thermal insulation mortar and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Dissolve 200g of aluminum sulfate in 2000g of water to prepare an aluminum sulfate solution, and dissolve 72g of quicklime in 720g of water to prepare lime water. Put the lime water in the container, slowly add the aluminum sulfate solution under the condition of stirring at 200r / min until the pH value is 7.0, and obtain the translucent ettringite colloid. The premixed dry material is prepared and mixed as follows: Portland cement 450g, vitrified microspheres 225g, silica fume 27g, lime powder 54g, gypsum 54g. Add 27g of wood fiber, 54g of sepiolite fiber and 2g of shrinkage reducer to the prepared ettringite colloid. After stirring for 3 minutes, add the premixed dry material and continue stirring for 5 minutes. After natural curing of the obtained thermal insulation mortar for 28 days, the dry density is 300g / m 3 , The thermal conductivity is 0.057w / m·k.

Embodiment 2

[0056] Dissolve 220g of aluminum sulfate in 2200g of water to prepare an aluminum sulfate solution, and dissolve 79g of quicklime in 790g of water to prepare lime water. Put the lime water in the container, slowly add the aluminum sulfate solution under the condition of stirring at 200r / min until the pH value is 6.8, and obtain the translucent ettringite colloid. The premixed dry material is prepared and mixed as follows: Portland cement 600g, vitrified microspheres 280g, silica fume 60g, lime powder 100g, gypsum 60g. Add 10g of wood fiber, 30g of polyester fiber and 30g of polyvinyl alcohol with a concentration of 10% into the prepared ettringite colloid. After stirring for 4 minutes, add the premixed dry material and continue stirring for 8 minutes. After natural curing of the obtained thermal insulation mortar for 28 days, the dry density is 360g / m 3 , thermal conductivity 0.063w / m·k.

Embodiment 3

[0058] Dissolve 150g of aluminum sulfate in 2000g of water to prepare an aluminum sulfate solution, and dissolve 54g of quicklime in 1000g of water to prepare lime water. Put the lime water in the container, slowly add the aluminum sulfate solution under the condition of stirring at 200r / min until the pH value is 7.2, and obtain the translucent ettringite colloid. The premixed dry material is prepared and mixed as follows: Portland cement 400g, vitrified microspheres 280g, silica fume 100g, lime powder 60g, gypsum 40g. Add 10g of wood fiber, 20g of polypropylene fiber and 2g of shrinkage reducing agent into the prepared ettringite colloid, and after stirring for 5 minutes, add the premixed dry material and continue stirring for 5 minutes. After natural curing of the obtained thermal insulation mortar for 28 days, the dry density is 260g / m 3 , thermal conductivity 0.052w / m·k.

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Abstract

The invention relates to heat-insulation mortar and a preparation method therefor and particularly relates to the heat-insulation mortar, which has a network micropore structure and has excellent properties, prepared through forming an aqueous-phase uniform three-dimensional-network micropore structure by taking ettringite colloid as a template agent and adding a cementing material, fine and lightweight aggregates, additives and admixtures. The heat-insulation mortar disclosed by the invention has the characteristics of light weight, high strength and low coefficient of thermal conductivity, so that the performance indexes of the existing heat-insulation mortar can be effectively improved.

Description

technical field [0001] The invention relates to a thermal insulation mortar and a preparation method thereof, in particular to using ettringite colloid as a template agent to form a three-dimensional network microporous structure with uniform water phase. agent to prepare a kind of thermal insulation mortar with network microporous structure and excellent performance. The thermal insulation mortar of the invention has the characteristics of light weight, high strength and low thermal conductivity, and can effectively improve the performance index of the existing thermal insulation mortar. Background technique [0002] Thermal insulation mortar is not only suitable for new buildings, but also suitable for existing buildings because of its excellent performance in energy saving, heat insulation, fire prevention and frost resistance, aging resistance and low price. It has a wide market demand. [0003] Patent CN200610012729.6 discloses a high-efficiency energy-saving vitrified...

Claims

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Application Information

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IPC IPC(8): C04B38/00C04B28/04C04B22/14
CPCC04B28/04C04B2111/28Y02W30/91C04B14/02C04B14/185C04B18/26C04B22/062C04B22/148
Inventor 金承黎
Owner 浙江圣润纳米科技有限公司
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