A new aerogel composite insulation board

Abstract

The utility model discloses a novel aerogel composite heat preservation board, including vacuum heat insulation board, the six surface of vacuum heat insulation board is covered with heat preservation slurry, and the vacuum heat insulation board is composed of core material, high resistance barrier membrane bag and getter, and the core material is formed by laminating aerogel felt and glass fiber, and the aerogel felt and glass fiber layer are vacuum sealed in the high resistance barrier membrane bag, and the getter is arranged in the high resistance barrier membrane bag. The composite heat preservation board passes through " aerogel felt + hot pressing glass fiber felt + vacuum membrane bag + getter " synergistic effect, on the basis of guaranteeing excellent heat preservation performance, solves the problem of low strength of traditional VIP core material, easy to break bag, and also absorbs permeation gas continuously through getter, effectively delays vacuum attenuation, improves long-term heat preservation stability, and the aerogel felt in the core material overcomes the defect of traditional VIP " good initial performance, fast attenuation in later period "; the heat preservation slurry of vacuum heat insulation board six surface realizes exempted from adhesive paste installation, improves construction efficiency, and reduces the risk of thermal bridge.

Description

Technical Field

[0001] This utility model relates to the technical field of thermal insulation materials, specifically to a novel aerogel composite thermal insulation board. Background Technology

[0002] With the continuous advancement of energy conservation and environmental protection policies and the rapid development of green building and high-end manufacturing, the market demand for high-performance thermal insulation materials is increasing. Traditional thermal insulation materials, such as polystyrene board (EPS), polyurethane (PU), and rock wool, generally suffer from problems such as high thermal conductivity, poor fire resistance (mostly Class B or C), insufficient long-term stability, and susceptibility to moisture absorption and aging. These issues make it difficult to meet the technical requirements of modern industrial and construction sectors for integrated thermal insulation systems that are "efficiently heat-insulating, fire-resistant, and long-lasting."

[0003] Vacuum insulation panels (VIPs) are a new type of high-efficiency thermal insulation material. By drawing a porous core material into a high vacuum state (usually below 10 Pa), they effectively suppress the heat conduction and convective heat transfer of gas molecules. Therefore, they are widely used in fields with high requirements for thermal insulation performance, such as home appliances, cold chain logistics, building energy conservation, and new energy vehicle battery packs.

[0004] However, existing vacuum insulation panels still face several key technical bottlenecks in practical applications, which restrict their performance and widespread application:

[0005] 1. Insufficient mechanical strength of core material: Commonly used core materials such as glass fiber mat or fumed silica powder have a loose structure and are brittle. They are prone to cracking and powder shedding during vacuuming, transportation or installation, which not only affects the integrity of the vacuum, but may also pollute the environment and reduce the reliability and service life of the product.

[0006] 2. Weak vacuum maintenance capability: The high-barrier membrane bag has limited barrier performance. Water vapor and oxygen will slowly penetrate into the plate over time, causing the internal pressure to rise, the vacuum degree to decrease, and thus the thermal conductivity to increase significantly and the insulation performance to drop rapidly.

[0007] 3. Poor durability and construction adaptability: In long-term exposed environments such as building walls, VIP is prone to damage due to external impact, temperature difference deformation or improper installation, resulting in vacuum failure; at the same time, its poor flexibility and difficulty in cutting make transportation and construction inconvenient, limiting its application in complex structures.

[0008] 4. Significant Performance Degradation: Although VIPs have extremely low initial thermal conductivity, their insulation performance will rapidly deteriorate over time if there is a lack of effective gas adsorption mechanisms (such as the absence of a getter) or insufficient barrier layer performance, making long-term stable operation difficult. Specifically, if the core panel of the VIP is made of glass fiber, its thermal conductivity will be significantly lower under internal pressure than 10... 2The thermal conductivity will increase rapidly after 10 Pa. If aerogel is used as the core plate in VIP, its thermal conductivity will be greater than 10 Pa under internal pressure. 4 Pa will increase rapidly afterward.

[0009] In summary, existing vacuum insulation panels still have significant shortcomings in terms of structural strength, vacuum stability, environmental durability, and overall service performance. Therefore, there is an urgent need to develop a novel aerogel composite insulation panel to overcome the deficiencies of existing technologies and meet the pressing demand for advanced insulation materials in high-end applications. Utility Model Content

[0010] The purpose of this invention is to provide a novel aerogel composite insulation board to solve the above-mentioned defects caused by the prior art.

[0011] A novel aerogel composite insulation board includes a vacuum insulation board, wherein the six sides of the vacuum insulation board are covered with insulation slurry, and the vacuum insulation board is composed of a core material, a high-barrier membrane bag and a getter. The core material is composed of aerogel felt and glass fiber layers stacked together. The aerogel felt and glass fiber layers are vacuum sealed in the high-barrier membrane bag, and the getter is disposed in the high-barrier membrane bag.

[0012] In this embodiment, the aerogel felt is made of hydrophobic silica aerogel.

[0013] In this embodiment, the glass fiber layer is selected as hot-pressed glass fiber mat.

[0014] In this embodiment, the total thickness of the vacuum insulation board is ≤40mm, and the thickness of the aerogel felt is 2-5mm.

[0015] In this embodiment, the total thickness of the composite insulation board is ≤60mm.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] This composite insulation board utilizes the synergistic effect of "aerogel felt + hot-pressed glass fiber felt + vacuum diaphragm bag + getter" to ensure excellent thermal insulation performance. It solves the problems of low strength and easy bag breakage of traditional VIP core materials, while the getter continuously absorbs infiltrated gases, effectively delaying vacuum decay and improving long-term thermal insulation stability. The aerogel felt in the core material helps overcome the defects of traditional VIP materials, which are "good in the early stage but fast in the later stage". The insulation mortar covering all six sides of the vacuum insulation board enables glue-free installation, improving construction efficiency and reducing the risk of thermal bridging. Attached Figure Description

[0018] Figure 1 This is a three-dimensional view of the entire utility model after being cut open.

[0019] Figure 2 This is a front view of the entire utility model after being cut open.

[0020] Figure 3 This is a three-dimensional view of the vacuum insulation panel of the first structure after it has been completely cut open.

[0021] Figure 4 This is a 3D view of the vacuum insulation panel of the second structure after it has been completely cut open.

[0022] Figure 5 The curves show the change in thermal conductivity of VIP with internal pressure for different core materials.

[0023] in:

[0024] 10-Core material; 101-Aerogel mat; 102-Glass fiber layer;

[0025] 20-High barrier film bag;

[0026] 30-Getting agent;

[0027] 40 - Thermal insulation mortar. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0029] like Figures 1 to 5 As shown, a novel aerogel composite insulation board includes a vacuum insulation board. The six sides of the vacuum insulation board are covered with insulation slurry 40. The vacuum insulation board is composed of a core material 10, a high-barrier membrane bag 20, and a getter 30. The core material 10 is formed by stacking aerogel felt 101 and glass fiber layer 102. The aerogel felt 101 and glass fiber layer 102 are vacuum sealed in the high-barrier membrane bag 20. The getter 30 is disposed in the high-barrier membrane bag 20.

[0030] In this embodiment, the aerogel felt 101 is made of hydrophobic silica aerogel. The hydrophobic treatment significantly reduces the aerogel's ability to adsorb water vapor, preventing an increase in thermal conductivity due to moisture absorption and extending the service life of the insulation board.

[0031] In this embodiment, the glass fiber layer 102 is selected as hot-pressed glass fiber mat. The hot-pressing process makes the glass fiber structure denser and stronger, which can not only effectively support and protect the fragile internal aerogel mat, preventing it from cracking and shedding powder during vacuuming or transportation, but also improve the overall compressive strength.

[0032] In this embodiment, the total thickness of the vacuum insulation panel is ≤40mm, and the thickness of the aerogel felt 101 is 2-5mm. This thickness range is designed to balance thermal insulation performance and structural adaptability: the aerogel felt 101 can withstand internal pressures below 10... 4 At Pa, the thermal conductivity remains extremely low and changes gradually, while the thickness of the glass fiber layer 102 can be adjusted according to different usage environments (such as walls, pipes, and equipment) to provide sufficient mechanical protection and dimensional compatibility to meet diverse engineering needs.

[0033] In this embodiment, the total thickness of the composite insulation board is ≤60mm. This composite insulation board utilizes aerogel felt core material with an internal pressure below 10... 4 At Pa, the thermal conductivity remains extremely low and changes gradually. Combined with the high-barrier film bag 20 and getter 30, it can maintain a high-efficiency heat insulation state for a long time, overcoming the defect of traditional VIP "good initial performance, rapid decay in the later stage".

[0034] In this embodiment, Figure 5 The curves show the variation of VIP thermal conductivity with internal pressure for different core materials. For details, please refer to the paper "Study on Aging Performance and Life Prediction of Vacuum Insulation Board with Glass Wool Core Material", paper number: 102870619-SZ027.

[0035] The working principle of a new type of aerogel composite insulation board:

[0036] Through the synergistic effect of "aerogel felt + hot-pressed glass fiber felt + vacuum diaphragm bag + getter", while ensuring excellent thermal insulation performance, it not only solves the problems of low strength and easy bag breakage of traditional VIP core materials, but also effectively delays vacuum decay and improves long-term thermal insulation stability by continuously absorbing permeated gas through getter 30. The aerogel felt 101 in the core material 10 helps overcome the defects of traditional VIP "good initial performance but rapid decay in the later stage". The thermal insulation mortar 40 covering the six sides of the vacuum insulation board can achieve glue-free installation, improve construction efficiency and reduce the risk of thermal bridging.

[0037] Therefore, the above-disclosed embodiments are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A novel aerogel composite insulation board, characterized in that, The invention includes a vacuum insulation panel, the six sides of which are covered with insulating slurry (40). The vacuum insulation panel is composed of a core material (10), a high-barrier membrane bag (20), and a getter (30). The core material (10) is composed of aerogel felt (101) and glass fiber layer (102) stacked together. The aerogel felt (101) and glass fiber layer (102) are vacuum sealed in the high-barrier membrane bag (20). The getter (30) is disposed in the high-barrier membrane bag (20).

2. The novel aerogel composite insulation board according to claim 1, characterized in that, The aerogel felt (101) is made of hydrophobic silica aerogel.

3. The novel aerogel composite insulation board according to claim 1, characterized in that, The glass fiber layer (102) is selected from hot-pressed glass fiber mat.

4. The novel aerogel composite insulation board according to claim 1, characterized in that, The total thickness of the vacuum insulation board is ≤40mm, and the thickness of the aerogel felt (101) is 2-5mm.

5. The novel aerogel composite insulation board according to claim 1, characterized in that, The total thickness of the composite insulation board is ≤60mm.

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