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Long-fiber knitted vacuum insulation core material and preparation method thereof

A vacuum insulation, long fiber technology, used in heat exchange equipment, mechanical equipment, pipeline protection through heat insulation, etc., can solve the problem of short fibers easily pierced barrier bags, etc., to achieve low thermal conductivity, high thermal resistance, good flatness Effect

Inactive Publication Date: 2017-11-10
苏州亿禾永利新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Not only can it solve the problem that short fibers are easy to pierce the barrier bag, but it can also effectively prevent the core material from being easily inhaled into the respiratory tract by the human body due to its thin diameter and short length

Method used

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  • Long-fiber knitted vacuum insulation core material and preparation method thereof
  • Long-fiber knitted vacuum insulation core material and preparation method thereof
  • Long-fiber knitted vacuum insulation core material and preparation method thereof

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Effect test

Embodiment

[0027] A long-fiber braided vacuum insulation core material, the chemical composition of which is: 68.0% SiO by mass percentage 2 , 5.0% Al 2 o 3 , 6.5% B 2 o 3 , 1.0% ZnO, 1.0% ZrO 2 , alkali metal oxide K 2 O and Na 2 The sum of O is 10.0%, and the sum of alkaline earth metal oxides MgO, CaO and BaO is 8.5%. The core material has 10 layers, a single layer thickness of 5 mm, and a fiber diameter of 6.0 μm. The single-layer unit cell structure of the core material is rectangular, and the unit cell pore size is 7.0 μm×7.0 μm.

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Abstract

The invention discloses a long-fiber knitted vacuum insulation core material and a preparation method thereof. The core material is prepared by knitting and overlapping infinitely-long fibers, wherein every two layers are knitted and lapped through a staggered joint, thus air convection can be effectively inhibited, and as a result, the surface flatness is high while the thermal resistance of the core material is improved; the core material is high in thermal resistance and low in heat conductivity. With the adoption of the long-fiber knitted vacuum insulation core material, the problem that short fibers easily puncture a barrier bag can be solved; in addition, the condition that a core material which is small in diameter and short in length is easily inhaled into the respiratory tract of a human body can be effectively prevented.

Description

technical field [0001] The invention relates to a vacuum heat insulation core material and a preparation method thereof, in particular to a long fiber braided vacuum heat insulation core material and a preparation method thereof. Background technique [0002] Vacuum insulation panel (Vacuum Insulation Panel) is a thermal insulation material with excellent performance. It is composed of filled porous core material and vacuum protection surface layer. It can effectively avoid heat convection caused by air convection and heat conduction caused by solid contact. Therefore, it has an ultra-low thermal conductivity (≤0.006W / (m K)), and its thermal insulation performance is several times that of traditional thermal insulation materials (polyethylene, polyurethane, glass wool, rock wool). It has been successfully applied in household appliances and refrigerators. , cold chain and building wall insulation. [0003] Chinese patent CN101793340A discloses a vacuum insulation panel core...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L59/10C03C13/06
CPCF16L59/10C03C13/06
Inventor 陈舟陈力
Owner 苏州亿禾永利新能源有限公司
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