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High-performance reflective heat-insulating gypsum-based composite thermal insulation material and preparation method thereof

A composite thermal insulation material and gypsum-based technology, which is applied in the field of high-performance reflective thermal insulation gypsum-based composite thermal insulation materials and their preparation, can solve the problem of poor durability and climate tolerance, affecting the use energy of thermal insulation materials, and expanding perlite aggregates. Broken and other problems to achieve the effect of reducing shrinkage, improving construction performance, adjusting consistency and water retention

Active Publication Date: 2020-12-08
苏州大乘环保新材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, sodium silicate and gypsum will react to produce sodium sulfate. When thermal insulation materials are used for building exterior walls, they are prone to rain or absorb moisture. After the thermal insulation materials absorb water, a large amount of sodium ions will be ionized due to the presence of sodium sulfate.
However, sodium ions have a very high affinity for water, and in the presence of water, it is easy to penetrate into the gaps of expanded perlite, aggregate and coagulation materials, which affects the energy consumption of thermal insulation materials.
After the thermal insulation material is exposed to the sun, the water evaporates, and the sodium sulfate is precipitated in the form of crystalline salt, and the volume increases, resulting in micro-cracks or holes on the expanded perlite or aggregate, and even causing the expanded perlite or aggregate to break, making its use Less durable and less resistant to climate

Method used

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  • High-performance reflective heat-insulating gypsum-based composite thermal insulation material and preparation method thereof
  • High-performance reflective heat-insulating gypsum-based composite thermal insulation material and preparation method thereof
  • High-performance reflective heat-insulating gypsum-based composite thermal insulation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-9

[0059] Examples 1-9 all relate to a high-performance reflective heat-insulating gypsum-based composite thermal insulation material, and the contents of each component by weight are shown in the following table:

[0060]

[0061] The gradation particle size of the quartz sand used in each embodiment, the particle size of the thermal insulation light aggregate, the true density of the thermal insulation light aggregate, the viscosity of the modified methyl cellulose used and the length parameter of the anti-crack fiber As shown in the table below:

[0062]

Embodiment 10

[0064] A high-performance reflective heat-insulating gypsum-based composite thermal insulation material, which is based on Example 1, the difference is that the quartz sand used has been treated with hydrophobic treatment, and the specific treatment process is as follows,

[0065] P1. Evenly spray the silicone emulsion with a mass percentage concentration of 3% on the surface of the quartz sand, and the mass ratio of the spray amount of the silicone emulsion to the quartz sand is 1:1;

[0066] P2. Bake the quartz sand treated in step P1 at 85°C until the sprayed silicone emulsion is completely dry;

[0067] P3. After the quartz sand treated in step P2 is naturally cooled to room temperature, it is sieved to obtain quartz sand with a gradation particle size of 80 meshes for use.

Embodiment 11

[0069] A high-performance reflective heat-insulating gypsum-based composite thermal insulation material, which is based on Example 2, the difference is that the quartz sand used has been treated with hydrophobic treatment, and the specific treatment process is as follows,

[0070] P1. Evenly spray the silicone emulsion with a mass percentage concentration of 3% on the surface of the quartz sand, and the mass ratio of the spray amount of the silicone emulsion to the quartz sand is 1:1;

[0071] P2. Bake the quartz sand treated in step P1 at 95°C until the sprayed silicone emulsion is completely dry;

[0072] P3. After the quartz sand treated in step P2 is naturally cooled to room temperature, it is sieved to obtain quartz sand with a gradation particle size of 120 meshes for use.

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Abstract

The invention discloses a high performance reflective insulating gypsum-based composite insulation material and a preparation method thereof, belongs to the technology field of architectural heat preservation material and preparation thereof, and aims to solve the problem of poor durability of building insulation materials in existing technology. According to the technical solution, the insulationmaterial includes, by weights: 400-600 parts of gypsum, 250-500 parts of quartz sand, 100-150 parts of heat-insulated light aggregate, 3-5 parts of modified methyl cellulose, 5-10 parts of water reducing agent 6-15 parts of latex powder and 1-15 parts of anti-cracking fiber. Each component is powder or granule, and does not contain the composition that can react with gypsum to produce sodium sulfate. The composite insulation material has the advantages of good reflection insulation, good durability, easy use and low cost. The invention discloses a preparation method of the insulation material, and the method has the advantages of simple process, low thermal conductivity coefficient and high reflectance of sunlight and near-infrared reflectance, and excellent water resistance, weather resistance and durability.

Description

technical field [0001] The invention belongs to the technical field of building thermal insulation materials and their preparation, and more specifically relates to a high-performance reflective heat insulation gypsum-based composite thermal insulation material and a preparation method thereof. Background technique [0002] Building thermal insulation materials can be used to reduce heat loss in the indoor and outdoor environments of buildings and effectively reduce the load of building air-conditioning. It is an important part of building construction and implementing energy-saving renovations. its further development and application. In turn, there is an urgent need to develop new energy-saving building insulation materials that are moisture-proof. [0003] The Chinese patent with application publication number CN104556927A discloses a kind of thermal insulation material, which improves the current situation of insufficient cohesive force and poor hydrophobic effect of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14
CPCC04B28/145C04B2111/28C04B2201/32C04B2201/50C04B14/06C04B14/24C04B24/383C04B24/26C04B16/0625C04B2103/302C04B14/185
Inventor 顾加艳单秀军
Owner 苏州大乘环保新材有限公司
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