Preparing method for enhanced breathable insulating materials

A thermal insulation material, reinforced technology, applied in synthetic cellulose/non-cellulose material pulp/paper, special paper, fiber raw material processing, etc., can solve the problems of difficult gas extraction, long vacuuming time, etc. The effect of shortening, saving energy and improving work efficiency

Active Publication Date: 2013-06-05
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

[0018] A method for preparing an enhanced air-permeable thermal insulation material, comprising the steps of:

[0019] a. Pulping process: use alkali-free glass fibers with a fiber diameter of 0.4 microns and water-drawn glass fibers with a fiber diameter of 1 micron as the main raw materials, mix the two fibers, add white water at the same time, and stir for 5 minutes through a stirrer to make The fibers are suspended and dispersed, and the concentration is within the range of 0.05%%. Then, the mixed solution of alkali-free glass fiber and white water with a total concentration of 0.1% is added, and the beating is continued for 5 minutes to form a slurry; the white water is an aqueous solution containing a dispersant. The dispersant adopts a weak acid with a pH value of 2.5;

[0020] b. Forming process: The slurry formed in the above step a is transported to the multi-tube pulp distributor through the stainless steel screw pump, and the slurry from the multi-tube slurry distr...

Embodiment 2

[0024] A method for preparing an enhanced air-permeable thermal insulation material, comprising the steps of:

[0025] a. Pulping process: use alkali-free glass fibers with a fiber diameter of 0.8 microns and water-drawn glass fibers with a fiber diameter of 2 microns as the main raw materials, mix the two fibers, add white water at the same time, and stir for 10 minutes through a stirrer to make The fibers are suspended and dispersed, and the concentration is within the range of 0.1%, and then the mixed solution of alkali-free glass fiber and white water with a total concentration of 0.5% is added, and the beating is continued for 10 minutes to form a slurry; the white water is an aqueous solution containing a dispersant, so Described dispersant adopts the weak acid that pH value is 4.5;

[0026] b. Forming process: The slurry formed in the above step a is transported to the multi-tube pulp distributor through the stainless steel screw pump, and the slurry from the multi-tube...

Embodiment 3

[0030] A method for preparing an enhanced air-permeable thermal insulation material, comprising the steps of:

[0031] a. Pulping process: use alkali-free glass fibers with a fiber diameter of 0.6 microns and water-drawn glass fibers with a fiber diameter of 1.5 microns as the main raw materials, mix the two fibers, add white water at the same time, and stir for 8 minutes with a stirrer to make The fibers are suspended and dispersed, and the concentration is within the range of 0.08%. Then, the mixed solution of alkali-free glass fiber and white water with a total concentration of 0.3% is added, and the beating is continued for 8 minutes to form a slurry; the white water is an aqueous solution containing a dispersant. Described dispersant adopts the weak acid that pH value is 3;

[0032] b. Forming process: The slurry formed in the above step a is transported to the multi-tube pulp distributor through the stainless steel screw pump, and the slurry from the multi-tube slurry di...

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Abstract

The invention discloses a preparing method for enhanced breathable insulating materials. alkali-free glass fiber and water drawing glass fiber are as raw materials, the alkali-free glass fiber and water drawing glass fiber are enabled to be mixed, meanwhile, white water is added in, achieved mixed liquor is stirred to be in a suspension dispersed state, then mixed liquor of alkali-free glass fiber and the white water is added in, and pulping is continuously to be done; formed seriflux is enabled to be transported to a multitube seriflux arranging machine through a stainless steel screw pump, the seriflux through the multitube seriflux arranging machine enters a breast box and flows naturally to a forming part to form a wet paper sheet, the wet paper sheet is enabled to be secondary formed through a press roll, then the wet paper sheet achieved through the steps is sent into a natural gas tunnel-type drying oven, and a rough blank is achieved; the dried rough blank is enabled to be parted off and rolled up according to demanded specification, and then the needed enhanced breathable insulating materials are achieved.

Description

technical field [0001] The invention relates to a thermal insulation material, in particular to a preparation method of an enhanced air-permeable thermal insulation material used in the cryogenic storage and operation industry. 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 cylinder to vacuu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H13/40D21F3/02D21F5/02
Inventor 陈俊
Owner JIANGSU DALI ENERGY SAVING TECH CO LTD
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