Glass-fiber vacuum insulation panel nano core material and preparation method thereof

A vacuum insulation board, glass fiber technology, applied in the direction of fiber board, synthetic cellulose/non-cellulose material pulp/paper, heat exchange equipment, etc., to achieve the effect of good mechanical strength, long service life and superior physical properties

Active Publication Date: 2013-09-04
CHONGQING ZAISHENG TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional vacuum insulation panel core materials, such as airgel, microporous polyurethane, polyvinyl chloride, silica powder, asbestos fiber, and glass insulation wool, cannot meet the above requirements well.

Method used

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  • Glass-fiber vacuum insulation panel nano core material and preparation method thereof
  • Glass-fiber vacuum insulation panel nano core material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of the glass fiber vacuum insulation panel nano-core material of the present embodiment comprises the following steps:

[0021] Step 1: Take medium-alkali glass balls and heat them to 1700°C to melt them, blow and cut them to produce medium-alkali glass fiber chopped strands with an average diameter of 4um.

[0022] Step 2, select 80 parts of medium-alkali glass fiber chopped strands with an average diameter of 4um and 20 parts of non-alkali glass fiber cotton with a diameter of 1um.

[0023] Step 3: add the above-mentioned raw materials into an aqueous sulfuric acid solution for beating and disperse to obtain a slurry, control the concentration of the slurry to 1.7%, the degree of beating to 9°SR, the pH value to 3.2, and the beating time to 40 minutes.

[0024] Step 4, adding water to the obtained slurry to dilute to a mass concentration of 0.17%, and adjusting the pH value to 2.8;

[0025] Step 5, using a centrifugal deslagging machine to remo...

Embodiment 2

[0029] The preparation method of the glass fiber vacuum insulation panel nano-core material of the present embodiment comprises the following steps:

[0030] Step 1: Take medium-alkali glass balls and heat them to 1600°C to melt them, blow and cut them to produce medium-alkali glass fiber chopped strands with an average diameter of 3um.

[0031] Step 2, choose 50 parts of above-mentioned average diameters and be the medium-alkali glass fiber chopped strands of 3um, 50 parts of diameters be the alkali-free glass fiber cotton of 0.5um,

[0032] Step 3, adding the above-mentioned raw materials into an aqueous sulfuric acid solution for beating and dispersing, controlling the concentration of the slurry to 1.5%, the degree of beating to 8°SR, the pH value to 3, and the beating time to 40 minutes.

[0033] Step 4, add water to the obtained slurry to dilute to a mass concentration of 0.15%, and adjust the pH value to 2.5;

[0034] Step 5, using a centrifugal deslagging machine to r...

Embodiment 3

[0038] The preparation method of the glass fiber vacuum insulation panel nano-core material of the present embodiment comprises the following steps:

[0039] Step 1: Take medium-alkali glass balls and heat them to 1800°C to melt them, blow and cut them to produce medium-alkali glass fiber chopped strands with an average diameter of 6um.

[0040] Step 2, choose 100 parts of above-mentioned medium-alkali glass fiber chopped strands whose average diameter is 6um,

[0041] Step 3, adding the above-mentioned raw materials into an aqueous solution of sulfuric acid for beating and dispersing, controlling the concentration of the slurry to 2%, the beating degree to 10°SR, the pH value to 3.5, and the beating time to 40 minutes.

[0042] Step 4, add water to the obtained slurry to dilute to a mass concentration of 0.2%, and adjust the pH value to 3;

[0043] Step 5, using a centrifugal deslagging machine to remove slag from the slurry diluted in step 4, and perform wet forming on an i...

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Abstract

The invention discloses a glass-fiber vacuum insulation panel nano core material. The core material is made of, in percentage by mass, 50-100% of medium-alkali glass fiber chopped strands with diameters of 3-6um and 0-50% of alkali-free glass fiber cotton with diameter of 0.5-1.5um. The invention further discloses a preparation method for the glass-fiber vacuum insulation panel nano core material. The preparation method includes the following steps: 1), selecting raw materials according to the matching proportion, 2), pulping to scatter the raw materials to obtain sizing agent, 3), diluting the obtained sizing agent, 4), performing deslagging treatment on the diluted sizing agent and obtaining glass fiber wet paper through wet-process forming, 5), performing dehydration treatment on the obtained wet paper to make the moisture percentage less than 20%, and 6), drying the dehydrated wet paper. The vacuum insulation panel nano core material is good in heat-insulating effect, high in mechanical strength, and long in service life; and with the preparation method, the above effects of the vacuum insulation panel nano core material can be further guaranteed.

Description

technical field [0001] The invention relates to a core material of a vacuum heat insulation panel, in particular to a core material of a vacuum heat insulation panel using glass fiber as a raw material and a preparation method thereof. Background technique [0002] Vacuum insulation panel (referred to as VIP) is a new type of thermal insulation material. It has low thermal conductivity, good thermal insulation effect, and small space occupation ratio. It is widely used in various fields. Glass fiber is made of glass balls or waste glass through high-temperature melting and wire drawing. It is an inorganic non-metallic material with excellent performance. It has good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. It can be used in the field of thermal insulation. [0003] The selection and production method of the core material have an important impact on the performance of the vacuum insulation panel. An excellent vacuum insulat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L59/02F16L59/065F16S1/00D21J1/00D21J1/06D21H13/40D21F11/00
Inventor 郭茂秦大江
Owner CHONGQING ZAISHENG TECH CORP
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