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A preparation method of nano-microporous thermal insulation board

A nano-micro-hole, plate technology, applied in heat exchange equipment, chemical instruments and methods, mechanical equipment, etc., can solve the problems of low production efficiency, material fracture damage, large workload, etc., to avoid fracture and to achieve high sewing precision. , the effect of simple operation

Active Publication Date: 2017-02-22
LUYANG ENERGY SAVING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] According to the patented method to prepare nanoporous thermal insulation boards, it is easy to cause material fracture and damage during the process of coating nanoporous thermal insulation materials, and after completing the coating treatment of nanoporous thermal insulation materials, it is necessary to manually divide the sewing interval, and then re-sew in the mold. Sewing the sewing sections one by one, the operation is difficult, the workload is heavy, and the production efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The embodiment of the present invention discloses a method for preparing a nano-microporous thermal insulation board, which includes the following steps:

[0025] (A) After mixing the nano-silica powder, the infrared shading agent and the reinforcing agent evenly, put it into the fiber cloth bag sewn on three sides, and sew the remaining side of the fiber cloth bag;

[0026] (B) flattening and pressing the stitched fiber cloth bag to obtain block plate;

[0027] (C) removing the film of the block board and cracking to obtain a nano-microporous heat-insulating board.

[0028] In the present invention, nanometer silica powder, infrared shading agent and reinforcing agent are used as main materials for preparing nanometer microporous thermal insulation boards, and fiber cloth bags are used as covering materials to avoid excessive floating dust.

[0029] According to the present invention, first mix the nano-silica powder, the infrared sunscreen agent and the reinforcing a...

Embodiment 1

[0038] (1) Use glass fiber yarn with a wire diameter of 0.25mm to sew a 300×300mm alkali-free glass fiber cloth bag through an ordinary industrial sewing machine, seal and sew any three edges of the fiber cloth bag, and leave the remaining edge unsewn. It is easy to load materials, and the thickness of the fiber cloth is 0.3mm;

[0039] (2) Weigh 60 parts by weight of nano-silica, 30 parts by weight of silicon carbide, and 10 parts by weight of glass fiber and put them into a closed mixer, stir the mixture evenly by dry method at high speed, then weigh 500g of materials and put them into the step (1) In the non-alkali glass fiber cloth bag prepared in (1), the glass fiber yarn with a wire diameter of 0.25mm is used for sealing and sewing by an ordinary industrial sewing machine. So far, the material is completely limited in the cloth bag;

[0040] (3) Put the fiber bag containing the material into the mold, and spread the material in the bag evenly by shaking, plate pressing, ...

Embodiment 2

[0044] (1) Use ceramic fiber yarn with a wire diameter of 0.35mm to sew a 400×500mm high-silica glass fiber bag through an ordinary industrial sewing machine, seal and sew any three edges of the fiber bag, and leave the remaining edge unsewed , easy to load materials, the thickness of fiber cloth is 0.25mm;

[0045] (2) Weigh 70 parts by weight of nano-silica, 15 parts by weight of zircon sand, and 15 parts by weight of ceramic fiber into a closed mixer, stir the mixture evenly by dry method at high speed, then weigh 560g of the material and put it into In the non-alkali glass fiber cloth bag prepared in step (1), the ceramic fiber yarn with a wire diameter of 0.35 mm is used for sealing and sewing by an ordinary industrial sewing machine. So far, the material is completely confined in the cloth bag;

[0046] (3) Put the fiber bag containing the material into the mold, and spread the material in the bag evenly by shaking, plate pressing, etc.;

[0047] (4) Under the pressure ...

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Abstract

The invention provides a preparation method of a nano microporous heat insulating panel. The preparation method of the nano microporous heat insulating panel comprises the following steps of: mixing nano silica powder, an infrared light shielding agent and an reinforcing agent uniformly, putting the mixture into a three-side stitched fiber cloth bag, and sewing the unstitched side of the fiber cloth bag; flattening and pressing the stitched fiber cloth bag to obtain a blocky panel; demolding and quilting the blocky panel to obtain the nano microporous heat insulating panel. Because the powdery raw materials are wrapped before being pressed and molded, the breakage of the panel can be avoided. In addition, because the fiber cloth bag is sewn simply on a workbench and does not need to be sewn in a mold, and the heat insulating surfaces of all wrapping fiber cloth do need to be divided into sewing sections, the operation is simple, and the efficiency is high. Furthermore, because a quilting machine is controlled by a computer to quilt the blocky panel, the operation is simple, and the blocky panel can be quilted accurately.

Description

technical field [0001] The invention relates to the field of thermal insulation materials, in particular to a preparation method of a nano-microporous thermal insulation board. Background technique [0002] With the increase of energy consumption, countries around the world have listed the research and promotion of high-efficiency thermal insulation refractory materials as one of the main directions for energy saving and consumption reduction. Traditional thermal insulation refractory materials include lightweight bricks, lightweight castables, and ceramic fibers, etc., but their thermal conductivity is relatively high, and they cannot meet the energy-saving requirements of the outer wall of industrial equipment below 70 °C under a given thickness. [0003] Nano-microporous thermal insulation material is a new type of thermal insulation refractory material, which contains a large number of nano-scale pores inside, the average size of nano-scale pores is about 50nm, the therm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B37/10B32B37/00F16L59/02
CPCB32B37/10B32B38/00B32B2038/008F16L59/02
Inventor 刘超任大贵张成贺
Owner LUYANG ENERGY SAVING MATERIALS CO LTD
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