Felt for vacuum insulation panel, method for producing same, and vacuum insulation panel using same

A technology of vacuum insulation panels and fiber mats, which is applied in textiles, papermaking, non-woven fabrics, etc., and can solve problems such as potential risks to human health and the increase in lung cancer

Active Publication Date: 2017-10-24
FUJIAN SUPERTECH ADVANCED MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that these fiber dusts inhaled by the human body are very likely to pose a potential risk to human health and increase the possibility of causing lung cancer and other diseases.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Felt for vacuum insulation panel, method for producing same, and vacuum insulation panel using same
  • Felt for vacuum insulation panel, method for producing same, and vacuum insulation panel using same
  • Felt for vacuum insulation panel, method for producing same, and vacuum insulation panel using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] An embodiment of the felt used for vacuum insulation panels of the present invention, the felt is composed of chopped glass fibers, bio-soluble inorganic cotton and adhesive, wherein: the chopped glass fibers are alkali-free glass fibers, R 2 The O content is 0.85wt%, the average fiber diameter is 6.1μm, the average fiber length is 15mm, the sizing agent content is 0.05wt%, and the water content is 9.6wt%. Bio-soluble inorganic cotton is bio-soluble high-temperature-resistant cotton, with a softening point of 950°C, an average fiber diameter of 1 μm, an average fiber length of 30 mm, and a slag ball content of 1 wt%, simulating the dissolution rate constant K in human lung fluid dis 225ng / (cm 2 .hr), the composition of this bio-soluble high temperature resistant cotton is 68wt% SiO 2 , 10wt% CaO, 21wt% MgO, 0.8wt% ZrO 2 , 0.2wt% impurity. The adhesive is 20wt% polyvinyl alcohol resin aqueous solution, brand 0388, manufactured by Shanghai Donghu Industrial Company.

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Embodiment 2

[0109] In the second embodiment of the felt used for vacuum insulation panels of the present invention: chopped glass fibers are alkali-free glass fibers, R 2 The O content is 0.85wt%, the average fiber diameter is 15μm, the average fiber length is 3mm, the sizing agent content is 0.5wt%, and the water content is 6wt%. The bio-soluble inorganic cotton is bio-soluble glass wool, with a softening point of 500°C, an average fiber diameter of 3 μm, an average fiber length of 50 mm, and a slag ball content of 4.5 wt%. The adhesive is 20wt% polyvinyl alcohol resin aqueous solution, brand 0388, manufactured by Shanghai Donghu Industrial Company.

[0110] The process of preparing the felt is as in the first embodiment, wherein:

[0111] When preparing white water, the white water is made into a thickener concentration of 0.05wt% solution by uniformly mixing the thickener methylcellulose with clear water, and then adding 0.2wt% defoamer (AGTAN 281), 1wt% dispersant (EDAPLAN 480), pre...

Embodiment 3

[0122] In the third embodiment of the felt used for vacuum insulation panels of the present invention: chopped glass fibers are medium-alkali glass fibers, R 2 The O content is 12wt%, the average fiber diameter is 30μm, the average fiber length is 25mm, the sizing agent content is 1.5wt%, and the water content is 14wt%. . The bio-soluble inorganic cotton is bio-soluble glass wool with a softening point of 550°C, an average fiber diameter of 8 μm, an average fiber length of 200 mm, a slag content of 8 wt%, and a Kdis of 195 ng / (cm2.hr). The half-disappearance period of the experiment was less than 40 days. The adhesive is 20wt% polyvinyl alcohol resin aqueous solution, brand 0388, manufactured by Shanghai Donghu Industrial Company.

[0123] The process of preparing the felt is as in the first embodiment, wherein:

[0124] When preparing white water, the white water is prepared by uniformly mixing the thickener methylcellulose and clear water to form a solution with a thicken...

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Abstract

The invention discloses felt of a vacuum insulation panel, a preparation method for the felt, and a vacuum insulation panel using the felt. The felt is the fibro-felt containing glass fibers. The felt is composed of 80-99wt% of chopped glass fibers, 1-20wt% of bio-soluble inorganic cotton and 0.1-11.1wt% of solidified adhesives. The chopped glass fibers intersect with each other in a filament manner, and a few of the chopped glass fibers extend in the direction close to the thickness direction of the felt. On the extension plane of the felt, the chopped glass fibers distributed close to the X direction are more than the chopped glass fibers distributed closed to the Y direction, and the average tension-resistant force of the felt in the X direction is larger than that in the Y direction. The bio-soluble inorganic cotton bypasses, overlaps or intersect with the adjacent chopped glass fibers in a filament manner. The adhesives are dispersed between the two kinds of filaments, are tightly bonded with the filaments, and do not exist alone. The average diameter and the average length of the chopped glass fibers are 6.1-30 [mu]m and 2.5-25mm respectively. The diameter of bio-soluble inorganic cotton fibers is 1 / 30-1 / 3 of that of the chopped glass fibers, and the average fiber length of the bio-soluble inorganic cotton is twice to 20 times of that of the chopped glass fibers. According to the invention, the damage to human bodies due to generated MMVFs fiver dust can be effectively avoided or reduced.

Description

technical field [0001] The invention relates to a thermal insulation material, a preparation method thereof and a thermal insulation product using the thermal insulation material. Background technique [0002] Vacuum insulation panel (English full name Vacuum Insulation Panel, hereinafter referred to as VIP) is mainly composed of core material (hereinafter referred to as core material), barrier bag and getter, and its structure is as follows: figure 1 and Picture 1-1 shown. The barrier bag 11 is mainly a packaging bag composed of a polymer film and a special coating film or aluminum foil. Edge banding 10. The core material 12 is the core of the VIP, which is formed by stacking multi-layer felts 121, which play the role of skeleton support, reduce heat transfer and facilitate degassing; the getter 13 is mainly calcium oxide type getter or alloy type The getter or calcium oxide and alloy getter is an important part of VIP, which absorbs the residual gas (including water v...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4218
Inventor 杨胜利庄泽龙陈艳华
Owner FUJIAN SUPERTECH ADVANCED MATERIAL
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