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Vacuum insulation panel of phase change material and glass fiber composite core material and preparation method thereof

A technology of vacuum insulation panels and phase change materials, which is applied to heat exchange equipment, mechanical equipment, and pipelines through thermal insulation protection, etc., can solve the problem of not using vacuum insulation panels, etc. The effect of thermal barrier action

Inactive Publication Date: 2015-08-19
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, phase change materials have not been used in vacuum insulation panels so far.

Method used

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  • Vacuum insulation panel of phase change material and glass fiber composite core material and preparation method thereof
  • Vacuum insulation panel of phase change material and glass fiber composite core material and preparation method thereof
  • Vacuum insulation panel of phase change material and glass fiber composite core material and preparation method thereof

Examples

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Effect test

example 1

[0066] The paraffin wax is a binary mixed system of 17-alkane and 18-alkane. Under different mixing ratios, the phase transition temperature of the paraffin wax can be obtained by mixing between 20°C and 28°C. Silica molecular sieve is a composite phase change energy storage material with a carrier. Paraffin wax and silica molecular sieve are in a simple chimera relationship, and the composite material has good thermal stability and compatibility.

[0067] The above-mentioned composite phase change energy storage material with a phase change temperature of 20°C is selected and wrapped with a high polyester-based capsule with a diameter of 50 nanometers, and then the nanocapsules are combined with a glass fiber with a diameter of 30 μm to form a sandwich structure. The mass of the phase change material The percentage is 12%, and the vacuum insulation panel using this core material is evacuated to a final pressure of 0.6Pa, and the thermal conductivity value measured by GB / T3399-...

example 2

[0233] The calcium chloride hexahydrate nanocapsule phase change material with a phase transition temperature of 29°C is wrapped with a high polyester-based capsule with a diameter of 50 nanometers, and then the nanocapsules are composited with glass fibers with a diameter of 30 μm to form a sandwich structure. The mass percentage of the core material is 12%, and the vacuum insulation panel using this core material is evacuated to a final pressure of 0.6Pa. The thermal conductivity value measured by GB / T3399-2009 plastic thermal conductivity test method-protected hot plate method is 0.00351W (m · K). Choose a vacuum insulation panel composed of calcium chloride hexahydrate nanocapsule phase change material and glass fiber with a diameter of 30 μm, and the labels are G, H, and I. Select a vacuum insulation panel with a diameter of 30 μm glass fiber as the core material, and evacuate to a final pressure of 0.6Pa in the same way, labeled A 2 , B 2 、C 2 , this group was set as ...

example 3

[0292] The nanocapsule phase change material made of capric acid and lauric acid binary compound has a phase change temperature between 25-30°C, and the phase change temperature can be determined according to the molar concentration of capric acid in the capric acid-lauric acid binary compound system.

[0293] The above-mentioned phase-change energy storage material with a phase-change temperature of 25°C is selected and wrapped with a high-polyester-based capsule with a diameter of 50 nanometers, and then the nanocapsules are composited with glass fibers with a diameter of 30 μm to form a sandwich structure. The mass percentage of the phase-change material The vacuum insulation panel using this core material is evacuated to a final pressure of 0.6Pa, and the thermal conductivity value measured by GB / T3399-2009 plastic thermal conductivity test method-protected hot plate method is 0.00347W (m K) Choose a vacuum insulation panel made of capric acid-lauric acid binary composite n...

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Abstract

The invention discloses novel vacuum heat insulation panel materials. The core-layer heat insulating materials of the novel vacuum heat insulation panel materials are composited by phase-change materials and glass fiber materials, according to processing needs, the phase-change materials are spread among ultra-fine glass fiber filaments, or the phase-change materials work as an independent layer and are made into a sandwich structure with two layers of glass fiber felts. The vacuum heat insulated panel materials have the advantage that the phase-change materials are covered with nano-sized superpolyester base capsules. The superpolyester base capsules are high in hardness and not prone to being damaged under vacuum environment. The phase-transition temperature of the phase-change materials is 20 DEG C to 30 DEG C, and the phase-change materials are used in the field of building energy conservation. When the heat of the high temperature side of a vacuum heat insulation panel is transmitted to a low temperature side through the phase-change materials, the temperature of the phase-change materials in the superpolyester base capsules rises. When the temperature reaches the phase-transition temperature of the phase-change materials, heat is stored, and after the phase transition of the phase-change materials is completely finished, the heat is transmitted to the other side of the vacuum heat insulation panel through a phase transition layer. When the temperature of the high temperature side is lowered, the phase-change materials release the heat back to the high temperature side, and therefore the purpose of delaying the temperature variation gradient of the high temperature side is achieved.

Description

Technical field: [0001] The invention relates to a novel vacuum heat insulation board material, in particular to a vacuum heat insulation board material whose core material is made of nanocapsule phase change material and glass fiber. Background technique: [0002] Vacuum insulation panel (VIP) is a new type of thermal insulation material developed rapidly in recent years. It does not use ozone depleting substances (Ozone Depleting Substances), has the characteristics of environmental protection, high efficiency and energy saving, and the thermal conductivity can reach 0.002-0.004W / (m K), its thermal resistance is equivalent to 10 times or even higher than ordinary insulation materials, and its thickness is only 1 / 7 of ordinary insulation materials, which has the dual advantages of environmental protection and energy saving, and is currently the most advanced high-efficiency insulation material in the world . In the field of building materials, phase change energy storage b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L59/02
Inventor 张婷婷阚安康曹丹刘颂
Owner SHANGHAI MARITIME UNIVERSITY
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