Construction technique for filling polyurethane hard bubbles in wall outer insulation layer

A technology of polyurethane rigid foam and construction technology, which is applied in the direction of heat preservation, walls, building components, etc. It can solve the problems of water seepage, freezing and thawing and falling off, easy cracking of board seams, and difficulty in guaranteeing the service life of the outer insulation layer, etc., and achieves dispersion of internal stress , Eliminate the cracking of the board seam, and the effect of strong self-adhesive force

Inactive Publication Date: 2010-06-23
南通华宏化工设备制造安装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is relatively simple and the cost is not high, but there are quality risks such as easy cracking at the joints of the board, water seepage, freezing and thawing, and falling off, which makes it difficult to guarantee the service life of the outer insulation layer

Method used

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  • Construction technique for filling polyurethane hard bubbles in wall outer insulation layer
  • Construction technique for filling polyurethane hard bubbles in wall outer insulation layer
  • Construction technique for filling polyurethane hard bubbles in wall outer insulation layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The construction process of pouring polyurethane rigid foam into the external insulation layer of the wall, the process steps are as follows:

[0025] (1) Base wall treatment, remove floating ash, floating soil, oil stains and other wastes on the surface of the base wall that hinder the sticking of insulation boards;

[0026] (2) Use an adhesive to paste the polystyrene board on the base wall. When pasting, make the adhesive between the polystyrene board and the base wall leave a distance of 10mm from the surrounding edges of the polystyrene board, and the polystyrene boards are mutually There is also a gap of 30mm between them;

[0027] (3) When the strength of the adhesive for pasting the polystyrene board reaches more than 60% of the design strength, inject hard polyurethane foam into the gap of the polystyrene board reserved above, so that the polyurethane foams in the gap and fills up the gap;

[0028] (4) the outer surface of the hard polyurethane foam after foam...

Embodiment 2

[0031] Embodiment two is basically the same as embodiment one, and its difference is that in step (2), the adhesive between the polystyrene board and the base wall has a distance of 20mm from the surrounding edges of the polystyrene board, and the polystyrene board There is also a gap of 50mm between each other;

Embodiment 3

[0033] Embodiment three is basically the same as embodiment one, except that in step (2), the adhesive between the polystyrene board and the base wall has a distance of 25 mm from the surrounding edges of the polystyrene board, and the polystyrene board There is also a gap of 60mm between each other;

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Abstract

The present invention relates to a construction technique for filling polyurethane hard bubbles in a wall outer insulation layer. Insulation boards are glued to a base wall processed by an adhesive, the distance of 10 to 30mm is left from the adhesive between the insulation boards and the base wall to the circumferential edges of the insulation boards, and 10 to 100mm gaps are left between the insulation boards. When the adhesive glued to the insulation boards reaches more than 60% of the strength designed, polyurethane hard bubbles are poured in the gaps preset of the insulation boards to make polyurethane foamed and fill up the gaps. The outer surface of the polyurethane hard bubbles is abraded to be in the same plane with the outer surfaces of the insulation boards. Anti-crack mortar of about 3 to 8mm thickness is spread on the outer surfaces of the insulation boards, an alkali-proof net or a steel wire net is embedded, and an anti-crack mortar protective layer is made. The present invention has the advantages that the wall outer insulation layer forms a seamless whole body, quality problems, such as crack, seeping water freeze thawing, fall, etc can be thoroughly eliminated, the use time of the outer insulation layer is extended, and the fire-proofing grade of the outer insulation layer is improved.

Description

technical field [0001] The invention relates to a construction technique for compositely pouring polyurethane rigid foam into an external thermal insulation layer of a wall, which is a construction technique for pouring polyurethane rigid foam when the external thermal insulation layer of a wall is laid, and belongs to the construction field. Background technique [0002] With the development of the construction industry, people pay more and more attention to the thermal insulation performance of building walls, heating in winter, and energy saving. Energy saving and improvement of building thermal conditions have become an urgent need for the construction industry and the entire society, especially those with high efficiency and energy saving advantages. Energy-saving building exterior wall insulation structure is being widely promoted and applied. The external insulation structure of the wall with thermal insulation material and grid cloth externally attached to the wall h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/76E04B1/80E04B2/00
Inventor 李金峰
Owner 南通华宏化工设备制造安装有限公司
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