Preparation of heat-insulating energy-saving mortar containing phase-change material

A phase-change material and mortar technology, which is applied in the field of preparation of thermal insulation and energy-saving mortar, can solve problems affecting wall thermal insulation and energy conservation, liquid phase-change material seepage, and house dampness, etc., so as to improve thermal insulation and energy saving effects, and increase crack resistance and anti-seepage Performance, the effect of preventing shedding and water seepage

Active Publication Date: 2008-11-12
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large part of the existing thermal insulation mortar is made of organic matter, such as EPS thermal insulation mortar, which mainly adds high molecular polymers to the thermal insulation mortar to improve the compactness and bonding strength of the mortar. It has good thermal insulation effect and chemical resistance. Corrosion, but its defect is: the mortar containing organic matter is easy to age under ultraviolet radiation, causing the wall and mortar layer to fall off and seep, not only losing the effect of heat preservation and energy saving, but also causing the house to return to damp, affecting people's life and work quality
The defect of this technology is: the phase change material has not been coated, so once the mortar layer and the wall layer form cracks and gaps, it will cause the liquid phase change material to overflow, which not only affects the effect of wall insulation and energy saving, but also affects The appearance of the wall is beautiful

Method used

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  • Preparation of heat-insulating energy-saving mortar containing phase-change material

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Experimental program
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Effect test

Embodiment 1

[0024] In every cubic meter of mortar: pottery sand 200kg, phase change material content in pottery sand holes is 15.0% (weight ratio), phase change material is a blend of methyl stearate / n-dodecyl alcohol, compounding ratio 1: 1. Polypropylene hollow fiber 1.5kg, the phase change material content in the fiber cavity is 17.5% (weight ratio), and the phase change material is methyl stearate; Cement 250kg; Vitrified microspheres 125kg; Water-cement ratio 0.5; Stir The time is 3 minutes; it is used for wall painting, the thickness is 2.0cm, the measured bond strength is 0.67MPa, and the heat transfer coefficient is 1.20W / (m 2 · K).

[0025] Ingredients from the set of the invention figure 1 It can be seen that 1. pottery sand, 2. phase change material in pottery sand holes, 3. cement, 4. inorganic vitrified microbeads, 5. polypropylene hollow fiber, 6. polypropylene hollow fiber cavity phase change material.

Embodiment 2

[0027] Per cubic meter of mortar: pottery sand 350kg, phase change material content in pottery sand holes is 17.5% (weight ratio), phase change material is a blend of capric acid / lauric acid, compounding ratio 1:1; polypropylene hollow Fiber 1.6kg, phase-change material content is 15.0% (weight ratio) in the fiber cavity, and phase-change material is methyl stearate; Cement 200kg; Vitrified microsphere 150kg; Water-cement ratio 0.55; Stirring time 3.5 minutes; Painted on the wall, the thickness is 3.0cm, the measured bond strength is 0.8MPa, and the heat transfer coefficient is 1.02W / (m 2 · K).

Embodiment 3

[0029] In every cubic meter of mortar: pottery sand 400kg, the phase change material content in the pottery sand hole is 22.0% (weight ratio), phase change material is the blend of butyl stearate / paraffin, compounding ratio 1: 1.5; Propylene hollow fiber 1.8kg, the phase change material content in the fiber cavity is 20.5% (weight ratio), the phase change material is the blend of capric acid / lauric acid, compound ratio 1: 1; Cement 150kg; Vitrified microbead 180kg; water-cement ratio 0.6; stirring time 4 minutes; used for wall painting, thickness 3.0cm, measured bond strength is 0.72MPa, heat transfer coefficient is 1.05W / (m 2 · K).

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Abstract

The invention relates to a method for preparing insulated energy-saving mortar containing phase-change materials, comprising the following steps that: (1) at a temperature of between 30 and 130 DEG C and the vacuum degree is between 0.03 and 0.09, 80 to 500 kg of ceramsite and 0.8 to 2.5 kg of polypropylene hollow fibers are immersed in a phase-change material solution and treated for 5 to 120 minutes, so that the phase-change material solution permeates into holes of the ceramsite and cavities of the polypropylene hollow fibers; (2)the obtained ceramsite and polypropylene hollow fibers, together with 100 to 300 kg of cement and 50 to 200 kg of vitrified micro bubbles, are mixed for 3 to 5 minutes in the condition that the cement water factor is controlled between 0.4 and 0.6. The method is easy and convenient to implement and has low requirement on equipment; and the obtained mortar has good insulated energy-saving effect and can be widely applied in the aspect of heat-insulation of walls in the building field.

Description

technical field [0001] The invention relates to the field of preparation of thermal insulation materials, in particular to a preparation method of thermal insulation and energy-saving mortar containing phase change materials. Background technique [0002] Improving the thermal insulation performance of the wall is the key link to reduce building energy consumption, and the use of thermal insulation and energy-saving mortar can achieve the purpose of convenient construction and reducing building energy consumption. A large part of the existing thermal insulation mortar is made of organic matter, such as EPS thermal insulation mortar, which mainly adds high molecular polymers to the thermal insulation mortar to improve the compactness and bonding strength of the mortar. It has good thermal insulation effect and chemical resistance. Corrosion, but its defect is: the mortar containing organic matter is easy to age under ultraviolet radiation, causing the wall and mortar layer to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B14/04C04B16/06
CPCC04B28/02C04B28/10C04B2111/28
Inventor 邹黎明倪建华胡家伦胡嘉福王曙中董家瑞郑伟徐速
Owner DONGHUA UNIV
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