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A kind of thermal insulation honeycomb panel and preparation method thereof

A technology for thermal insulation and honeycomb panels, which is applied in chemical instruments and methods, special paper, paper/cardboard layered products, etc., and can solve the problems of large volume, large honeycomb cavity, and low space utilization.

Active Publication Date: 2021-09-07
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to its large honeycomb cavity, ordinary honeycomb panels not only occupy a large volume, but also have low space utilization, and are prone to radiation heat transfer and local convection heat transfer, which limits its heat insulation effect and lacks functionality.

Method used

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  • A kind of thermal insulation honeycomb panel and preparation method thereof
  • A kind of thermal insulation honeycomb panel and preparation method thereof
  • A kind of thermal insulation honeycomb panel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown, the heat insulation honeycomb board, the lower layer and the middle core layer are respectively 110g / m 2 and 170g / m 2 The measured thicknesses of grade A kraftboard are 0.19mm and 0.22mm respectively. The honeycomb grid is a regular hexagon, the length of each side is 16mm, and the thickness of the board is 10-60mm. The honeycomb grid is filled with thermal insulation materials.

[0032] Such as figure 2 As shown, environmentally friendly and renewable rice straw powder (the surrounding countryside of Lianyungang City, Jiangsu Province), vitrified microspheres (Xinyang Zhongsen Perlite Application Co., Ltd.) and polystyrene foam particles (Guangzhou Yishi Yijia composite material products) were selected. Co., Ltd.) as the filling material of honeycomb panels, in order to facilitate filling and reduce the large gaps between materials, the maximum size of the filling material is controlled within 5mm, and it is distributed in multiple sizes,...

Embodiment 2

[0042] Embodiment 2 heat transfer test

[0043] The thermal conductivity test method was used to evaluate the heat transfer performance of ordinary honeycomb panels and functional honeycomb panels with high filler porosity. According to ASTM C518-17 standard, the equivalent thermal conductivity λ was calculated by heat flow method. E The value is measured, and the instrument is HFM436 / 3 Lambda heat flow meter. The area of ​​the hot and cold plates of the system is 300×300mm 2 , considering that the common high temperature in summer in densely populated areas such as tropics and subtropics is around 40°C and the indoor human body’s comfortable temperature, the hot and cold plates are respectively set to t h = 40°C and t c =25°C, the equipment system automatically clamps the specimen tightly between the cold and hot plates by controlling the loading size, and the thickness of each specimen during the test is automatically recorded by the system. Such as Figure 4 shown. Bef...

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Abstract

The invention relates to a heat-insulating and heat-preserving honeycomb panel and a preparation method thereof. The heat-insulating and heat-preserving honeycomb panel includes: an upper layer, a lower layer and a core layer in the middle, the core layer grid is a regular hexagonal structure, and the honeycomb grid is filled with filling The filler is freely and loosely filled in the honeycomb grid of the honeycomb panel, and is fastened with an adhesive, with a porosity of 50% to 80%; the radiation space is reduced from the unit honeycomb to the cavity of the filler and the fine voids. Radiation heat transfer forms the phenomenon of regional heat radiation heat transfer. Compared with the prior art, the present invention uses materials to fill the honeycomb panels to form a functional honeycomb panel with high filler porosity, which not only sharply reduces the cavity in the honeycomb panel, but also effectively prevents radiation heat transfer and local convection heat transfer, Moreover, the phenomenon of regional heat radiation and heat transfer is formed, and functional honeycomb panels with high heat insulation benefits are prepared.

Description

technical field [0001] The invention relates to a functional honeycomb panel, in particular to a functional honeycomb panel with high filler porosity and a preparation method thereof. Background technique [0002] The researchers found that the hexagonal and hexagonal nests made by bees can be constructed into extremely strong honeycombs with the least material consumption. This multi-wall arrangement and a series of continuous honeycomb-shaped network structures can be dispersed from various The external force of the square makes the resistance of the honeycomb structure to the extrusion force much higher than that of any prototype or square. Therefore, the honeycomb sandwich structure is a lightweight structural form with high specific strength and specific stiffness. [0003] However, due to its large honeycomb cavity, ordinary honeycomb panels not only occupy a large volume and have low space utilization, but also are prone to radiation heat transfer and local convectio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B29/06B32B29/00B32B3/12B32B3/08B32B7/12B32B7/08B32B33/00B32B37/12B32B37/10B32B38/00D21H27/30D21H27/32
CPCB32B3/08B32B3/12B32B7/08B32B7/12B32B29/06B32B33/00B32B37/10B32B37/1284B32B38/00B32B2250/03B32B2250/26B32B2307/302B32B2307/304B32B2419/00D21H27/30D21H27/32
Inventor 宋毅恒郭振胜陈锦祥徐圆
Owner SOUTHEAST UNIV