Arced vacuum heat insulation composite plate and manufacturing method thereof

A vacuum heat insulation board and vacuum heat insulation technology, applied in heat exchange equipment, pipeline protection through heat insulation, heat preservation, etc., can solve problems such as increased pipeline load, insulation layer thickness, closed cell rate less than 100%, and avoid Energy consumption, thermal insulation performance avoidance, effect of improving thermal insulation effect

Inactive Publication Date: 2012-10-24
SUZHOU HONGJIU AVIATION THERMAL MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But they all have the following deficiencies: (1) the thermal conductivity is not low enough, resulting in a large thickness of the insulation layer, which brings difficulties for the production of the mold and is not conducive to construction; (2) the compressive strength is low and easy to damage; (3) ) The closed cell rate cannot reach 100%, and there must be a reliable waterproof protective layer on the outside
It is obvious: (1) In this case, there is still the shortcoming that the insulation

Method used

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  • Arced vacuum heat insulation composite plate and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Apply a layer of release agent evenly on the inner wall of the mold. Put the 7mm-thick circular tube-shaped vacuum insulation panel vertically into the inner tube of the mold, 5mm away from the outer wall of the inner tube, and embed it in the prefabricated round polyurethane foam support block coated with adhesive to fix it. Close the mold, fill the molded polyurethane foam and cure for 0.5 to 1 hour. After demoulding, removing the board and deburring, a 17mm thick two-component polyurethane-coated rigid sandwich cylinder of vacuum insulation board was obtained.

Embodiment 2

[0031] Apply a layer of release agent evenly on the inner wall of the mold. Put the 8mm thick circular tube-shaped vacuum insulation board vertically into the inner tube of the mold, 3mm away from the outer wall of the inner tube, close the mold, fill with one-component polyurethane adhesive, heat and cure for 24-72 hours. After demoulding, removing the board and trimming the corners, a 14mm thick single-component polyurethane-coated soft sandwich cylinder of vacuum insulation board was obtained.

Embodiment 3

[0033] Apply a layer of release agent evenly on the inner wall of the mold. A 7 mm thick semicircular vacuum insulation panel was placed vertically in the center of the mold cavity. And embedded in the prefabricated semicircular polypropylene foam support block coated with adhesive to fix. Close the mold, and fill with 4mm thick polypropylene foam material on both sides and solidify for a period of time. Afterwards, a 15mm-thick semicircular polypropylene-coated rigid sandwich panel with a vacuum insulation panel was obtained after demoulding, board removal and deburring.

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Abstract

The invention discloses an arced vacuum heat insulation composite plate and a manufacturing method thereof. The arced vacuum heat insulation composite plate is characterized by comprising three layers, wherein the middle layer is a vacuum heat insulation plate, and two sides are heat-conservation organic foam; the organic foam is polyurethane foam and polypropylene foam; the polyurethane foam is composed of single-component polyurethane and double-component polyurethane; wherein the single-component polyurethane is used for wrapping the vacuum heat insulation plate to obtain a soft composite plate; and the double-component polyurethane is used for wrapping the vacuum heat insulation plate to obtain a hard composite plate. The arced vacuum heat insulation composite plate has the advantages that the heat conduction coefficient of a heat conservation layer material is relatively lower than the conventional heat conservation material, so that the thickness of the heat conservation layer is reduced greatly, the increase of the pipeline load caused by the pipeline temperature unevenness is avoided, and the service life of a pipeline is prolonged; meanwhile, the procedure that raw petroleum in a seabed petroleum transmission pipeline of which the heat conservation layer is made of the conventional heat conservation material can be heated at each certain distance so as to keep the flowability is omitted; the energy consumption is reduced; and working procedures are simplified.

Description

technical field [0001] The invention relates to a composite panel and a manufacturing method thereof, in particular to an arc-shaped vacuum heat-insulating composite panel and a manufacturing method thereof. Background technique [0002] With the increasing scope of offshore oil and gas exploitation, the continuous growth of consumption demand for clean energy represented by natural gas in various countries around the world, and the continuous improvement of urban heating systems, the society is demanding various pipelines such as oil pipelines, natural gas pipelines, and urban heat pipelines. The demand for it is increasing, and its requirements, especially the requirements for pipeline insulation materials, are becoming more and more stringent. [0003] Holland Semaflex International Holdings Co., Ltd. discloses a pipe insulation layer made of polyolefin heat-insulating foam and a manufacturing method thereof in a Chinese invention patent with a publication number of 00820...

Claims

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Application Information

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IPC IPC(8): F16L59/02F16L59/065B29C70/34
Inventor 陈照峰王璐周介明
Owner SUZHOU HONGJIU AVIATION THERMAL MATERIALS TECH CO LTD
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