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Titanium oxide fiber paper for cryogenic insulation and its preparation method and application

A low-temperature cryogenic, titanium oxide technology, applied in chemical instruments and methods, inorganic fibers/sheets, papermaking, etc., can solve problems such as unreported industrial production of titanium oxide fiber paper, achieve low outgassing rate, radiation resistance and heat insulation High performance and versatile effects

Active Publication Date: 2018-06-29
山东德艾普节能材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the industrial production of titanium oxide fiber paper has not been reported

Method used

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  • Titanium oxide fiber paper for cryogenic insulation and its preparation method and application
  • Titanium oxide fiber paper for cryogenic insulation and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1, the preparation of titanium oxide fiber paper

[0042] (1) The rutile phase titanium oxide fiber with a diameter of 0.3-2.0 micron is cut into short shreds by 1mm length for subsequent use;

[0043] Put the chopped strands into pure water and white water, add a binder (water glass), and stir for 24 hours to disperse evenly to obtain a slurry with a mass concentration of 0.03%, which is set aside;

[0044] (2) Pump the prepared slurry to the headbox, and evenly distribute it on the polyester forming net after entering the headbox through a steady flow, and form a wet paper sheet on the net;

[0045] Carry out vacuum filtration for the wet paper, control the suction pressure at 0.2-0.5MPa, and further squeeze through the press roller, control the humidity of the wet paper not higher than 85%;

[0046] The wet paper is transferred to the composite aluminum foil through a nylon roller, and the thickness of the aluminum foil is about 0.006mm;

[0047] The zir...

Embodiment 2

[0050] Embodiment 2, the preparation of titanium oxide fiber paper

[0051] (1) Cut the rutile phase titanium oxide fiber with a diameter of 0.5-2.3 microns into chopped strands according to the length of 2mm for future use.

[0052] Put the chopped strands into pure water and white water, add a binder (water glass), and stir for 24 hours to disperse evenly to obtain a slurry with a mass concentration of 0.04%, which is set aside;

[0053] (2) Pump the prepared slurry to the headbox, and evenly distribute it on the polyester forming net after entering the headbox through a steady flow, and form a wet paper sheet on the net;

[0054] Carry out vacuum filtration for the wet paper, control the suction pressure at 0.2-0.5MPa, and further squeeze through the press roller, control the humidity of the wet paper not higher than 85%;

[0055] The wet paper is transferred to the composite aluminum foil through a nylon roller, and the thickness of the aluminum foil is about 0.006mm;

...

Embodiment 3

[0059] Embodiment 3, the preparation of titanium oxide fiber paper

[0060] (1) Cut the rutile-phase titanium oxide fiber with a diameter of 0.8-2.5 microns into chopped strands according to the length of 3 cm for future use.

[0061] Put the chopped strands into pure water and white water, add a binder (water glass), and stir for 24 hours to disperse evenly to obtain a slurry with a mass concentration of 0.05%, which is set aside;

[0062] (2) Pump the prepared slurry to the headbox, and evenly distribute it on the polyester forming net after entering the headbox through a steady flow, and form a wet paper sheet on the net;

[0063] Carry out vacuum filtration for the wet paper, control the suction pressure at 0.2-0.5MPa, and further squeeze through the press roller, control the humidity of the wet paper not higher than 85%;

[0064] The wet paper is transferred to the composite aluminum foil through a nylon roller, and the thickness of the aluminum foil is about 0.006mm;

...

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Abstract

The invention relates to a titanium dioxide (TiO2) fiber paper for cryogenic insulation and a manufacturing method and application thereof.The titanium dioxide fiber paper comprises TiO2 which is not less than 90% by mass percentage and diameter of TiO2 fibers ranges from 0.3 micrometer to 2.5 micrometers.The manufacturing method includes the steps of (1), cutting the TiO2 fibers into short fibers, dispersing the short fibers in pure water or / and clean water, adding in binder with stirring and dispersing uniformly to obtain a slurry; (2), removing residue of the slurry and then spreading the slurry on a net by a beater, dewatering by suction filtration, pressing, and drying to obtain the product.The titanium dioxide fiber paper with high radiation capacity and high heat insulation can be composited with zirconia fibers, has low outgassing rate in vacuum, and has stable property at low temperature when used for coating containers of liquid nitrogen, liquefied natural gas and the like.

Description

technical field [0001] The invention relates to a titanium oxide fiber paper, a preparation method and its application as a high-vacuum multi-layer insulation composite material, and belongs to the technical field of heat insulation materials for storage and transportation equipment such as cryogenic containers and pipelines. Background technique [0002] At present, the most representative ultra-low temperature insulation materials are glass fiber paper and rigid polyurethane foam. The biggest disadvantage of polyurethane foam is its poor flame retardancy, poor dimensional stability at low temperature, and easy deformation and cracking. It is dangerous for the application of LNG storage and transportation equipment. Glass fiber ultra-low temperature insulation materials need to be combined with low-weight aluminum foil or non-woven fabrics in multiple layers to make a quilt-like insulation layer and wrap them on storage equipment for liquid gas or frozen samples. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/38D21H13/36D21H17/68B32B15/12B32B15/20
CPCB32B15/12B32B15/20B32B2307/212B32B2307/304D21H13/36D21H17/68D21H27/38
Inventor 许东张光辉王新强刘雪松朱陆益甘信柱
Owner 山东德艾普节能材料有限公司
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