Preparation method of mineral wool vacuum insulation panel core material

A technology of vacuum insulation panels and mineral wool, which is applied in the field of preparation of core materials of mineral wool vacuum insulation panels, can solve the problems that thermal conductivity does not fully meet the requirements of high-performance thermal insulation and high production costs, and achieves good thermal insulation effects, The effect of product flatness and low thermal conductivity

Active Publication Date: 2015-09-02
宣汉正原微玻纤有限公司
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Problems solved by technology

[0003] The existing technology mainly uses glass fiber cotton to produce VIP core materials, but its production cost is too high, and its thermal conductivity still does not fully meet the high-performance thermal insulation requirements due to space constraints and high appearance requirements

Method used

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  • Preparation method of mineral wool vacuum insulation panel core material
  • Preparation method of mineral wool vacuum insulation panel core material

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Embodiment 1

[0021] The preparation method of the novel mineral wool VIP core material of the present embodiment may further comprise the steps:

[0022] 1) Dispersion pulping: add rock wool fibers to the deflaking machine, then add sulfuric acid and water to disperse, disperse the rock wool fibers to a diameter of less than 1.5 μm; then send the dispersed rock wool fibers into the storage stirring tank, and then add sulfuric acid and clear water adjusted to a pH value of 4.0 and a slurry with a mass concentration of 3.5%;

[0023] 2) Forming: Dilute the slurry obtained in step 1) to a mass concentration of 0.3%, and then perform slag removal; then transport the slurry to an inclined wire former for wet forming, dehydration forming in six stages, the first Section dehydration capacity is 8m 3 / (min.m), the dehydration capacity of the second stage is 8m 3 / (min.m), the dehydration capacity of the third stage is 8m 3 / (min.m), the dehydration capacity of the fourth stage is 7m 3 / (min.m)...

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Abstract

The invention discloses a novel method for preparing a mineral wool Vacuum Insulation Panel (VIP) core material. The method comprises steps of step 1, adding rock wool to a fluffer, adding sulfuric acid and water for dispersion, dispersing the rock wool to be in a diameter of less than 1.5 mu m, feeding the dispersed rock wool to a storage stirring pool, adding the sulfuric acid and the water, and obtaining slurry of the potential of hydrogen (PH) value from 3.5 to 4.5 and of 3-4% of mass concentration; step 2, diluting the slurry obtained in the step 1 to be in 0.2-0.4% of mass concentration, removing slag, conveying the obtained slurry to an inclined net former for wet forming, obtaining wet paper, and conducting suction dehydration for the wet paper on the condition of 0.01-0.05 Mpa of vacuum degree; and step 3, drying the wet paper obtained in the step 2 at the temperature from 200 DEG C to 300 DEG C. The VIP core material prepared through the method is low in thermal coefficient and cost, uniform in fiber distribution and neat.

Description

technical field [0001] The invention relates to a method for manufacturing a core material of a vacuum heat insulation board, in particular to a method for preparing a core material of a mineral wool vacuum heat insulation board. Background technique [0002] Vacuum insulation panel (Vacuum Insulation Panel, referred to as VIP) is a kind of vacuum insulation material, which is composed of filling core material and vacuum protection surface layer. It can effectively avoid heat transfer caused by air convection, so the thermal conductivity can be greatly reduced. , and does not contain any OD materials, has the characteristics of environmental protection and high efficiency and energy saving, and is currently the most advanced high-efficiency thermal insulation material in the world. Compared with traditional heat insulation materials, VIP core material has the advantages of thin layer, small volume and light weight while meeting the same heat preservation technical requiremen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C13/06C03C25/64
Inventor 郭茂秦大江李学杰傅小菊
Owner 宣汉正原微玻纤有限公司
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