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Core material for dry-method vacuum insulation panel and preparation method thereof

A technology for vacuum insulation panels and core materials, which is applied in heat exchange equipment, mechanical equipment, and pipelines through heat insulation protection. It can solve the problems of low cost, poor uniformity, and high cost of core materials, and achieve high pass rate and uniformity. Increased temperature and stable thermal conductivity

Inactive Publication Date: 2020-12-04
南京聚力纤维材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The core material made by the wet process has good uniformity, but the cost is high and the performance is slightly low; the core material made by the dry process is low in cost and good performance, but the uniformity is not good

Method used

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Examples

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Comparison scheme
Effect test

Embodiment Construction

[0017] The core material for a dry-process vacuum insulation panel in this embodiment includes glass fibers and a binder, and the solid content of the binder is 0.3%-2% of the mass of the glass fibers.

[0018] In the core material for dry-process vacuum insulation panels, the glass fibers are glass fibers with a diameter of 3-6 μm and a length of 5-500 mm.

[0019] In the core material for dry-process vacuum insulation panels, the glass fibers include 60-65 parts by weight of SiO 2 , 4.5-6.5 parts by weight of B 2 o 3 , 0.8-3.5 parts by weight of Al 2 o 3 , 12-17 parts by weight of Na 2 O, 0.5-3 parts by weight of K 2 O, 4-8 parts by weight of CaO, and 1-4 parts by weight of MgO.

[0020] In the core material for dry-process vacuum insulation panels, the binder is a thermosetting resin binder.

[0021] The above-mentioned method for preparing a core material for a dry-process vacuum insulation panel comprises the following steps:

[0022] (1) Fully mix the adhesive an...

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Abstract

The invention provides a core material for a dry-method vacuum insulation panel and a preparation method thereof. The core material for the dry-method vacuum insulation panel comprises glass fibers and an adhesive, wherein the solid content of the adhesive is 0.3-2% of the mass of the glass fibers. The preparation method comprises the following steps of firstly, fully mixing the adhesive with water according to a weight ratio of 1:(3-20), and then carrying out atomizing; secondly, in the process of centrifugally spraying the glass fibers by adopting a centrifugal machine, mixing and adding themixture of the atomized adhesive and water, wherein the mixing ratio is that the solid content of the adhesive is 0.3-2% of the mass of the glass fibers; and finally, drying, curing and hot-pressingthe glass fibers mixed with the adhesive to form the core material for a vacuum insulation panel, wherein the density of the hot-pressed core material is 60-200 Kg / m<3>. According to the core materialfor the dry-method vacuum insulation panel and the preparation method thereof, reasonable proportioning and continuous production process control are adopted, so that the quality uniformity of the core material is greatly improved, there are no slag balls, and the heat insulation performance is good.

Description

Technical field: [0001] The invention relates to a core material for a dry-process vacuum insulation panel and a preparation method thereof, belonging to the technical field of new materials. Background technique: [0002] Vacuum insulation panel, also known as VIP panel, is a kind of vacuum insulation material, which is composed of filling core material and vacuum protection surface layer, which can effectively avoid heat transfer caused by air convection. The core material of the vacuum insulation panel mainly includes powder core material and glass fiber core material. The vacuum insulation panel made of silica as the powder core material has a relatively high thermal conductivity and is mainly used in wall insulation; while the glass fiber core material The thermal conductivity of the vacuum insulation panel is low, and it is mainly used for energy-saving and heat preservation of refrigerators, freezers, and refrigerated vehicles. [0003] The core material of the vacuu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L59/02F16L59/065C04B26/06C04B26/12
CPCC04B26/06C04B26/122C04B2201/32F16L59/028F16L59/065C04B14/42
Inventor 齐斌
Owner 南京聚力纤维材料有限公司
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