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Vacuum multi-layer insulating structure of low temperature thermal insulation paper for deep-cool storage container and matched pipelines

A low-temperature thermal insulation and multi-layer thermal insulation technology is applied in the field of low-temperature thermal insulation paper to achieve the effect of maintaining high vacuum degree, low transportation cost and good flexibility.

Active Publication Date: 2011-03-16
HANGZHOU FUSHIDA SPECIAL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the glass filaments of woven glass cloth need to be added with wax or other oils during the fiber drawing process to prevent the fibers from sticking to each other, they need to undergo high-temperature degreasing treatment when used in multi-layer insulation structures. Once there are problems in the treatment process or treatment operations Improperly, the outgassing rate under vacuum will increase and affect the performance of the product, and in actual use, because the fiber diameter is relatively thick, it is easy for the fiber to enter the capillary pores of the human body and make the body itchy, thus bringing troubles to production and operation. There are many uncertain factors and difficulties, and the overall cost is high; while using other papers such as cigarette paper can save the trouble of degreasing, but it is not resistant to high and low temperatures (high temperature is easy to force the paper to age and low temperature is easy to make the paper fat. Brittle), some chemicals added in the paper production process will affect the final vacuum, thus affecting product performance

Method used

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  • Vacuum multi-layer insulating structure of low temperature thermal insulation paper for deep-cool storage container and matched pipelines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 Preparation of low-temperature insulation paper (reference figure 1 )

[0033] (1) Throw cotton-type viscose fiber with a fiber linear density of 1.67dtex onto the feeding net;

[0034] (2) After rough opening, the wind is sent to the opening machine for reopening;

[0035] (3) It is sent to the carding machine to be carded into a net;

[0036] (4) Fold the fiber web evenly by the laminating machine;

[0037] (5) Use a carding machine to card and spread into a uniform fiber web;

[0038] (6) Continuously pass the fiber web through an impregnation device containing 1.5% polyvinyl alcohol hydrosol, so that the fiber web is impregnated with the rubber material and then a certain amount of rubber material is squeezed out with a pressing roller;

[0039] (7) Use multiple drying cylinders to dry, and use a coiler to roll the finished product.

[0040] The above-mentioned finished products can also be put into storage after slitting and packaging.

[0041] The resultant product ...

Embodiment 2

[0042] Example 2 Preparation of low-temperature insulation paper

[0043] (1) Pour cotton-type polyester fiber with a fiber linear density of 1.2dtex onto the feeding net;

[0044] (2) After rough opening, the wind is sent to the opening machine for reopening;

[0045] (3) It is sent to the carding machine to be carded into a net;

[0046] (4) Fold the fiber web evenly by the laminating machine;

[0047] (5) Use a carding machine to card and spread into a uniform fiber web;

[0048] (6) Continuously pass the fiber web through an impregnation device containing 2.0% polyvinyl alcohol hydrosol, so that the fiber web is impregnated with the rubber material, and then a certain amount of rubber material is squeezed out with a pressing roller;

[0049] (7) Use multiple drying cylinders to dry, and use a coiler to roll the finished product.

[0050] The resultant product is determined to be 8~10g / m 2 , The thickness is 0.05~0.09mm. The low-temperature insulation paper is compounded with 0.006~0.0...

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Abstract

The invention relates to a low temperature isolation hot paper, with 5-14g / m2 in density and 0. 04-0. 09mm in thickness. It is made by feeding, release, carding, netting, carding, spreading, dipping, drying and rolling of the cotton type chemical synthetic fiber. It can be used for the vacuum multi layer isolation structure for deep cold fluid transportation. It has fine low temperature isolationfeature, with fine softness and anti stretch, free from pollution, extensive in application, low in transportation cost.

Description

(1) Technical field [0001] The invention relates to a low-temperature heat-insulating paper, and also relates to a preparation method and application of the low-temperature heat-insulating paper. (2) Background technology [0002] At present, the insulation materials commonly used in the vacuum multilayer insulation structure of cryogenic liquid storage and transportation containers and their supporting pipelines are glass cloth, and other papers such as cigarette paper are used as substitutes. Since the glass filaments of woven glass cloth need to be added with wax or other oils during the fiber drawing process to prevent the fibers from sticking to each other, they need to undergo high-temperature degreasing treatment when used in multi-layer insulation structures. Once there are problems in the treatment process or treatment operations Improperly, the outgassing rate under vacuum will increase and affect the performance of the product, and in actual use, because the fibe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27N3/04B27N1/00B27N1/02B27N3/18
Inventor 应建明
Owner HANGZHOU FUSHIDA SPECIAL MATERIAL
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