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Super breathable type deep-cooling heat-insulating material and preparation method thereof

A cryogenic heat-insulation and air-permeable technology, which is applied to synthetic cellulose/non-cellulose material pulp/paper, mechanical equipment, fiber raw material processing, etc., can solve the problems of long vacuuming time and difficult gas extraction, and achieve energy saving , Improve work efficiency, high calorific value

Active Publication Date: 2013-05-01
JIANGSU DALI ENERGY SAVING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the original cryogenic insulation material is relatively flat, and the aluminum foil itself is also very flat, there is no gap between them after the cryogenic insulation material is combined with the aluminum foil, which makes it difficult to extract the gas during vacuuming, and the required vacuuming time is longer.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A super-strong breathable cryogenic insulation material, which includes 1% water-drawn alkali-free glass fiber and 99% water-drawn alkali-free glass fiber; the selection of water-drawn alkali-free glass fiber: diameter Water-drawn alkali-free glass fibers with a length of 1.5um and a length of 2mm; the outer layer of the water-drawn alkali-free glass fibers is attached with a sizing agent; the sizing agent is water;

[0023] The alkali-free glass microfiber is selected from: the alkali-free glass fiber with a diameter of 0.8um and a length of 2mm;

[0024] The method for preparing the above-mentioned ultra-strong air-permeable cryogenic insulation material comprises the following steps:

[0025] a. Pulping process: use alkali-free glass microfibers with a fiber diameter of 0.8 microns as the main raw material, add white water at the same time, and stir for 5 minutes with a stirrer to make the fibers appear in a suspended and dispersed state, and the concentration is wit...

Embodiment 2

[0030] A super-breathable cryogenic insulation material, which includes 10% water-drawn alkali-free glass fiber and 90% water-drawn alkali-free glass fiber; the selection of water-drawn alkali-free glass fiber: diameter Water-drawn alkali-free glass fibers with a length of 3um and a length of 3mm; the outer layer of the water-drawn alkali-free glass fibers is attached with a sizing agent; the sizing agent is water; the alkali-free glass microfibers are selected: the diameter is 1um, alkali-free glass fiber with a length of 2mm;

[0031] The method for preparing the above-mentioned ultra-strong air-permeable cryogenic insulation material comprises the following steps:

[0032] a. Pulping process: add alkali-free glass microfibers with a fiber diameter of 1 micron to white water, and stir for 10 minutes with a stirrer to make the fibers appear in a suspended and dispersed state, and the concentration is within 0.1%, and then add a total concentration of 10%. The water-drawn alk...

Embodiment 3

[0037] A kind of reinforced air-permeable thermal insulation material, according to percentage by weight, including 5% water-drawn alkali-free glass fiber and 95% alkali-free glass microfiber; the selection of water-drawn alkali-free glass fiber: the diameter is 2um, Water-drawn alkali-free glass fibers with a length of 2.5mm; the outer layer of the water-drawn alkali-free glass fibers is attached with a sizing agent; the sizing agent is water; the alkali-free glass microfibers are selected: the diameter is 0.6um , the alkali-free glass fiber whose length is within 1.5 mm;

[0038] The method for preparing the above-mentioned enhanced air-permeable thermal insulation material includes the following steps:

[0039] a. Pulping process: add alkali-free glass microfibers with a fiber diameter of 0.6 microns to white water, and stir for 8 minutes with a stirrer, so that the fibers are in a suspended and dispersed state, and the concentration is within the range of 0.08%, and then t...

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PUM

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Abstract

The invention discloses a super breathable type deep-cooling heat-insulating material, which comprises alkali-free glass fibers and water spun glass fibers. A preparation method for the material comprises the steps as follows: adding the alkali-free glass fibers into white water, stirring to a suspended dispersion state, adding a mixed solution of the water spun alkali-free glass fibers and the white water, and continuing to beat; conveying formed slurry into a multi-pipe slurry distributor through a stainless steel screw pump, enabling the slurry discharged from the multi-pipe slurry distributor to enter a head box and naturally flow to a forming part so as to form a wet paper sheet, shaping the wet paper sheet through a press roll for the second time, and conveying the wet paper sheet into a natural gas tunnel type oven to obtain a rough blank; and cutting and winding the dried rough blank according to the required specification to obtain the required enhanced breathable heat-insulating material.

Description

technical field [0001] The invention relates to a thermal insulation material, in particular to an enhanced air-permeable thermal insulation material used in the cryogenic storage and operation industry and a preparation method of the material. Background technique [0002] In the prior art, the use of cryogenic insulation materials in the cryogenic storage and transportation industry needs to be wound after compounding with aluminum foil. At this time, the cryogenic insulation materials need to have a certain strength. The original product tensile strength is 0.035KN / m. When composite production is used, there will often be fractures, which will cause a lot of waste of manpower and materials. The cryogenic insulation material and aluminum foil are used in combination, and the outer layer of the inner cylinder is wound in multiple layers. After the winding is completed, the outer cylinder is wrapped The body is set and welded to seal. A vacuum port is provided on the outer ...

Claims

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Application Information

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IPC IPC(8): D21H13/40D21F11/00F17C1/12
Inventor 陈俊
Owner JIANGSU DALI ENERGY SAVING TECH CO LTD
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