Phase-change energy-storage aluminum silicate heat-preservation and heat-insulation template as well as preparation method and application thereof

Abstract

The invention provides a phase change energy storage aluminum silicate heat preservation and insulation formwork and a preparation method and application thereof, and belongs to the field of building materials. The invention provides a phase change energy storage aluminum silicate heat preservation and insulation formwork. The phase change energy storage aluminum silicate heat preservation and insulation formwork is prepared from dry materials and water. The dry material comprises the following components in parts by weight: 200-500 parts of light silica sand; 100 to 500 parts of aluminum silicate; 100 to 300 parts of magnesium aluminum silicate; 500 to 1000 parts of magnesium oxide; 300 to 500 parts of magnesium chloride; 50 to 100 parts of stearic acid; and 3-10 parts of polypropylene short fiber. The components in the dry material are low in heat conductivity coefficient and good in heat stability, and the phase change energy storage material is adopted, so that the template has excellent heat insulation performance, heat stability and phase change energy storage function; magnesium oxide and magnesium chloride can be gelled and hardened into magnesite cement with higher strength after being mixed with water, and the strength of the template is improved by the magnesium oxide and the magnesium chloride together with the polypropylene short fibers.

Description

Technical Field

[0001] This invention relates to the field of construction, and in particular to a phase change energy storage aluminum silicate thermal insulation template, its preparation method, and its application. Background Technology

[0002] Currently, most civil buildings in hot-summer and cold-winter regions of my country use cast-in-place reinforced concrete exterior walls, employing aluminum or bamboo formwork, with composite insulation boards applied to the interior walls for energy-saving design. Existing technology using polystyrene particle insulation boards combined with crack-resistant mortar composite insulation formwork suffers from high density and installation difficulties. Summary of the Invention

[0003] The purpose of this invention is to provide a phase change energy storage aluminum silicate thermal insulation template, its preparation method and application. The template of this invention has high strength.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0005] This invention provides a phase change energy storage aluminum silicate thermal insulation template. The raw materials for preparing the phase change energy storage aluminum silicate thermal insulation template include dry materials and water. By mass parts, the dry materials include the following components: 200-500 parts of lightweight silica sand; 100-500 parts of aluminum silicate; 100-300 parts of magnesium aluminum silicate; 500-1000 parts of magnesium oxide; 300-500 parts of magnesium chloride; and 3-10 parts of polypropylene short fibers.

[0006] Preferably, the thermal conductivity of the phase change energy storage aluminum silicate insulation template is ≤0.06w / (m·k), and the bulk density is ≤350kg / m³. 3 .

[0007] Preferably, the mass ratio of the dry material to water is 1.5 to 2.5:1.

[0008] Preferably, the bulk density of the lightweight silica sand is ≤110 kg / m³. 3 .

[0009] Preferably, the aluminum silicate has a particle size of 80 mesh or larger.

[0010] Preferably, the length of the polypropylene short fibers is 6-12 mm.

[0011] This invention also provides a method for preparing the phase change energy storage aluminum silicate thermal insulation template described in the above technical solution, comprising the following steps:

[0012] Magnesium chloride and water are mixed and stirred to dissolve, then magnesium oxide is added and stirred to carry out a gelation reaction. Then the remaining dry material is added, mixed and stirred evenly, and pressed into shape. The resulting molded body is then cured to obtain the phase change energy storage aluminum silicate thermal insulation template.

[0013] Preferably, the gelation reaction is carried out at a temperature of 0–35°C for 5–10 min.

[0014] Preferably, the molding temperature is 0-35℃, the pressure is 30 tons, and the curing time is 28 days.

[0015] The present invention also provides the application of the phase change energy storage aluminum silicate thermal insulation template described in the above technical solution or the phase change energy storage aluminum silicate thermal insulation template prepared by the preparation method described in the above technical solution in the field of building materials.

[0016] The low thermal conductivity of each component in the dry material in this invention results in excellent heat insulation performance of the prepared template. The magnesium chloride and magnesium oxide in the dry material harden into high-strength magnesium oxychloride cement after being mixed and stirred with water, which, together with the polypropylene short fibers, improves the strength of the template.

[0017] The phase change energy storage aluminum silicate thermal insulation template of this invention is installed using conventional aluminum or bamboo template installation methods, replacing the method of attaching composite insulation boards to the exterior walls with aluminum or bamboo templates. This saves materials and labor costs, and reduces building carbon emissions. Furthermore, by eliminating the thickness of the phase change energy storage aluminum silicate thermal insulation template attached to the exterior walls, the interior space is increased. Homebuyers will not need to remove it during home renovation, saving them removal costs and avoiding secondary construction waste pollution, thus protecting the environment. Detailed Implementation

[0018] This invention provides a phase change energy storage aluminum silicate thermal insulation template, wherein the raw materials for preparing the phase change energy storage aluminum silicate thermal insulation template include dry materials and water;

[0019] The dry material comprises the following components by weight:

[0020]

[0021] In this invention, the thermal conductivity of the phase change energy storage aluminum silicate thermal insulation template is preferably ≤0.06w / (m·k), and the bulk density is preferably ≤500kg / m³. 3 .

[0022] In this invention, the mass ratio of the dry material to water is preferably 1.5 to 2.5:1, more preferably 1.8:1 or 2:1.

[0023] In this invention, the dry material comprises, by weight, 200-500 parts of lightweight silica sand, preferably 250-450 parts, and more preferably 300-400 parts; the bulk density of the lightweight silica sand is preferably ≤110 kg / m³. 3 ;

[0024] The dry material comprises 100 to 500 parts by weight, preferably 200, 300, 350, 400 or 450 parts of aluminum silicate; the particle size of the aluminum silicate is preferably above 80 mesh.

[0025] The dry material comprises 100 to 300 parts by weight of magnesium aluminum silicate, preferably 125, 150, 180, 200 or 250 parts.

[0026] The dry material comprises 500 to 1000 parts by weight of magnesium oxide, preferably 500, 600, 700, 800 or 900 parts.

[0027] The dry material comprises 300 to 500 parts by weight of magnesium chloride, preferably 350, 400 or 450 parts;

[0028] The dry material comprises 3 to 10 parts by weight of polypropylene short fibers, preferably 4, 5, 6, 7, 8 or 9 parts.

[0029] The dimensions of the phase change energy storage aluminum silicate thermal insulation template are 1.5m × 0.6m × 0.03~0.05m.

[0030] This invention also provides a method for preparing the phase change energy storage aluminum silicate thermal insulation template described above, comprising the following steps:

[0031] Magnesium chloride and water are mixed and stirred to dissolve, then magnesium oxide is added and stirred to carry out a gelation reaction. Then the remaining dry material is added, mixed and stirred evenly, and pressed into shape. The resulting molded body is then cured to obtain the phase change energy storage aluminum silicate thermal insulation template.

[0032] In this invention, the preferred temperature for the gelation reaction is 0–35°C, and the preferred time is 5–10 min; the preferred molding temperature is 0–35°C, the preferred pressure is 30 tons, and the preferred curing time is 28 days.

[0033] The present invention also provides the application of the phase change energy storage aluminum silicate thermal insulation template described in the above-described scheme or the phase change energy storage aluminum silicate thermal insulation template prepared by the preparation method described in the above-described scheme in the construction field.

[0034] The preferred method for installing the phase change energy storage aluminum silicate thermal insulation template is an installation method using aluminum molds or bamboo molds.

[0035] The following detailed description, in conjunction with embodiments, illustrates the phase change energy storage aluminum silicate thermal insulation template, its preparation method, and its application. However, these descriptions should not be construed as limiting the scope of protection of this invention.

[0036] The preparation method of the phase change energy storage aluminum silicate thermal insulation template in the embodiment is as follows:

[0037] Magnesium chloride and water were mixed and dissolved, then magnesium oxide was added and stirred to induce a gelation reaction. The remaining dry material was then added, mixed thoroughly, and pressed into shape. The resulting molded body was then cured to obtain the phase change energy storage aluminum silicate thermal insulation template. The gelation reaction temperature was 25–30°C for 8 minutes; the molding temperature was 25–30°C and the pressure was 30 tons; the curing temperature was room temperature for 28 days.

[0038] Example 1

[0039] 800 parts magnesium oxide, 400 parts magnesium chloride, 1250 parts water, 100 parts stearic acid, with a bulk density of 100 kg / m³ 3 400 parts of lightweight silica sand, 400 parts of aluminum silicate that has passed through an 80-mesh sieve, 200 parts of magnesium aluminum silicate, and 5 parts of 6-12 mm polypropylene short fibers.

[0040] Example 2

[0041] 900 parts magnesium oxide, 450 parts magnesium chloride, 1350 parts water, 100 parts stearic acid, with a bulk density of 100 kg / m³ 3 450 parts of lightweight silica sand, 350 parts of aluminum silicate that passed through an 80-mesh sieve, 200 parts of magnesium aluminum silicate, and 5 parts of 6-12 mm polypropylene short fibers.

[0042] Example 3

[0043] 1000 parts magnesium oxide, 500 parts magnesium chloride, 1500 parts water, 100 parts stearic acid, with a bulk density of 100 kg / m³ 3 500 parts of lightweight silica sand, 300 parts of aluminum silicate that passed through an 80-mesh sieve, 200 parts of magnesium aluminum silicate, and 5 parts of 6-12 mm polypropylene short fibers.

[0044] The phase change energy storage aluminum silicate thermal insulation template prepared in Example 3 has the following strengths: impact resistance 10J, tensile bond strength 150KPa, uniformly distributed bending load 2200N / ㎡, compressive strength 150KPa, tensile strength perpendicular to the board surface 150N, and thermal conductivity 0.06w / (m·k).

[0045] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A phase change energy storage aluminum silicate thermal insulation template, characterized in that, The raw materials for preparing the phase change energy storage aluminum silicate thermal insulation template include dry materials and water; The dry material comprises the following components by weight: 200-500 parts of lightweight silica sand; 100-500 parts of aluminum silicate; 100-300 parts of magnesium aluminum silicate; 500-1000 parts of magnesium oxide; 300-500 parts of magnesium chloride; Stearic acid 50-100 parts; 3 to 10 parts of polypropylene short fibers.

2. The phase change energy storage aluminum silicate thermal insulation template according to claim 1, characterized in that, The thermal conductivity of the phase change energy storage aluminum silicate insulation template is ≤0.06w / (m·k), and the bulk density is ≤350kg / m³. 3 .

3. The phase change energy storage aluminum silicate thermal insulation template according to claim 1, characterized in that, The mass ratio of the dry material to water is 1.5 to 2.5:

1.

4. The phase change energy storage aluminum silicate thermal insulation template according to claim 1, characterized in that, The bulk density of the lightweight silica sand is ≤110 kg / m³. 3 .

5. The phase change energy storage aluminum silicate thermal insulation template according to claim 1, characterized in that, The aluminum silicate has a particle size of 80 mesh or larger.

6. The phase change energy storage aluminum silicate thermal insulation template according to claim 1, characterized in that, The polypropylene short fibers have a length of 6–12 mm.

7. The method for preparing the phase change energy storage aluminum silicate thermal insulation template according to any one of claims 1 to 6, characterized in that, Includes the following steps: Magnesium chloride and water are mixed and stirred to dissolve, then magnesium oxide is added and stirred to carry out a gelation reaction. Then the remaining dry material is added, mixed and stirred evenly, and pressed into shape. The resulting molded body is then cured to obtain the phase change energy storage aluminum silicate thermal insulation template.

8. The preparation method according to claim 7, characterized in that, The gelation reaction is carried out at a temperature of 0–35°C for 5–10 minutes.

9. The preparation method according to claim 7, characterized in that, The molding temperature is 0–35°C, the pressure is 30 tons, and the curing time is 28 days.

10. The application of the phase change energy storage aluminum silicate thermal insulation template according to any one of claims 1 to 6 or the phase change energy storage aluminum silicate thermal insulation template prepared by the preparation method according to any one of claims 7 to 9 in the field of building materials.

Images