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Online continuous hot-pressed dry vacuum insulation panel core preparation method and product

A vacuum insulation panel and dry process technology, applied in heat exchange equipment, mechanical equipment, textiles and papermaking, etc., can solve problems such as low production efficiency, low thermal conductivity, and inability to match the speed of glass fiber wool, and improve production. Efficiency, reduced thermal conductivity, improved thickness uniformity and overall mechanical strength

Active Publication Date: 2018-01-26
宣汉正原微玻纤有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The glass wool fiber can be evenly distributed, the distance between layers is 10-60μm, and the thermal conductivity is 0.015W / (m·K)(20℃)~0.03W / (m·K)(20℃). Layer structure ultra-fine glass fiber dry process core material, but the preparation method used in this invention is a static hot pressing molding method in batches, and its production efficiency is low
In addition, the patent with the publication number CN103542234A discloses a dry-process ultra-fine glass wool vacuum insulation panel core material and its preparation method. The material must be added with glass fiber prepared by the flame method to achieve the purpose of low thermal conductivity, and the core material is directly and instantaneously hot-pressed during the centrifugal production process of ultra-fine glass wool, and the hot-pressing method is also static hot-pressing in batches In this way, not only the production efficiency is low, but also the speed matching when the glass fiber cotton production line is directly connected with the hot press cannot be realized in actual operation

Method used

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  • Online continuous hot-pressed dry vacuum insulation panel core preparation method and product

Examples

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Effect test

Embodiment 1

[0024] Preparation of an on-line continuous hot-pressing dry-process vacuum insulation panel core material

[0025] (1) Fiber formation: Weigh 67 parts of quartz sand, 7.5 parts of soda ash, 4 parts of potassium feldspar, 1.5 parts of albite, 6 parts of calcite, 5.5 parts of borax, and 8.5 parts of dolomite according to the mass ratio, and put them into the kiln after uniform mixing Calcined in a furnace, and smelted into a glass liquid with uniform composition, no impurities and transparent glass, the temperature of the obtained glass liquid is 1040°C; the glass liquid flows into the high-speed rotating centrifugal disc with a temperature of 980°C through the leakage plate at a flow rate of 200kg / h The superfine glass fiber is thrown out, and the obtained superfine glass fiber is composed of the following components in terms of mass percentage: SiO 2 : 67wt%, R 2 O: 12.5wt%, R is Na or K, B 2 o 3 : 6wt%, CaO: 5.5wt%, Al 2 o 3 : 5wt%, MgO: 3wt%, Fe 2 o 3 : 1wt%, 94% of ...

Embodiment 2

[0033] Preparation of an on-line continuous hot-pressing dry process vacuum insulation panel core material

[0034](1) Fiber formation: Weigh 68 parts of quartz sand, 6.5 parts of soda ash, 5 parts of potassium feldspar, 2.5 parts of albite, 5 parts of calcite, 4.5 parts of borax, and 8.5 parts of dolomite according to the mass ratio, and put them into the kiln after uniform mixing Calcined in a furnace, and smelted into a glass liquid with uniform composition, no impurities and transparent glass, the temperature of the obtained glass liquid is 1040°C; the glass liquid flows into the high-speed rotating centrifugal disc with a temperature of 990°C through the leakage plate at a flow rate of 300kg / h The superfine glass fiber is thrown out, and the obtained superfine glass fiber is composed of the following components in terms of mass percentage: SiO 2 : 68.5wt%, R 2 O: 9wt%, R is Na or K, B 2 o 3 : 6.5wt%, CaO: 5.5wt%, Al 2 o 3 : 5.5wt%, MgO: 3.5wt%, Fe 2 o 3 : 1.5wt%, 9...

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Abstract

The invention relates to an online continuous hot-pressed dry vacuum insulation panel core preparation method and a product, and belongs to the technical field of glass fibers. The preparation methodincludes a cotton spreading process and a hot-pressing process, can also include a fiber forming process, a cotton collecting process and a rolling process before the cotton spreading process and canfurther include a slitting process after the hot-pressing process. A superfine glass fiber production process and a hot-pressing process in the prior art are separated and can be independently performed, the speed matching problem of hot-pressing and superfine glass fiber production lines in the prior art is solved, the production process of superfine glass fibers with different performances can be matched with the hot-pressing process, glass fiber dry rolled cotton can directly serve as a raw material for preparing a vacuum insulation panel core, and the vacuum insulation panel core is more flexibly prepared. Besides, the hot-pressing mode in the method is continuous hot-pressing, stay holding time is omitted, continuous production is realized, production efficiency is effectively improved, and production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of glass fiber, and in particular relates to a preparation method and product of an online continuous hot-pressing dry-process vacuum insulation board core material. Background technique [0002] Vacuum insulation panel (referred to as VIP) is a new type of thermal insulation material, which has many advantages such as low thermal conductivity, good thermal insulation effect, small space occupation, energy saving, low carbon, environmental protection, safety, etc. It is widely used in aerospace and other fields. With the rapid development of the aerospace industry, the space environment to be faced will become more harsh and complex, which puts forward higher requirements for the thermal insulation performance, weight and volume of the core material of the vacuum insulation panel used in aerospace. [0003] The patent with the publication number CN104370457A discloses a multi-centrifugal head super-layer st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4382D04H1/4218D04H1/54F16L59/065
Inventor 秦大江翟福强商月红张南夷
Owner 宣汉正原微玻纤有限公司
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