Outer heat-insulation system of outer wall

Abstract

The invention relates to an outer heat-insulation system of an outer wall. The outer surface of a basal layer wall body (1) is sequentially provided with an interfacial agent processing layer (2-1), a bonding mortar layer (3), a polyphenyl plate heat-insulation layer (4), a interfacial agent bonding layer (2-2), a first flexible heat- insulation putty layer (6-1), a second flexible heat- insulation putty layer (6-2), a closed base paint layer (7), an elastic heat- insulation coating layer (8) and a mat coat varnish layer (9) from inside to outside, wherein the first flexible heat- insulation putty layer (6-1) is internally provided with glass fibre gridding cloth (5); and all the layers are combined with the basal layer wall body (1) into a whole after being dried and solidified; flexibleheat-preserving putty of the two flexible heat-preserving putty layers, which contains 20-40 percent of heat-preserving materials, is formed, and elastic heat-preserving coating of the elastic heat-preserving coating layer (8), which contains 5-15 percent of heat-preserving materials, is formed. The outer heat-preserving system can prevent the polyphenyl plate heat- insulation layer (4) from cracking and desquamating caused by external temperature difference because of the heat preservation and isolation of the flexible heat- insulation putty layers and the elastic heat-preserving coating layer (8), thereby prolonging the service life of the heat-preserving system and enhancing the energy-saving effect of buildings.

Description

technical field [0001] The invention relates to an external thermal insulation system for an external wall. Background technique [0002] The specific structure of the traditional polystyrene board thin plaster exterior wall insulation system is: base wall + bonding mortar layer + polystyrene board insulation layer + plastering mortar layer (lined with glass fiber mesh cloth) + putty layer + decorative Topcoat layer. In such an external thermal insulation system for external walls, the finishing paint layer only has decoration and general waterproof functions, and does not have thermal insulation functions, which has certain limitations for the protection of the entire system. As we all know, when the external thermal insulation system of the external wall is exposed to direct sunlight, due to the high thermal resistance of the polystyrene board, it will be difficult for the heat in the plastering mortar layer and the finishing paint layer to diffuse through heat conduction...

AI Technical Summary

Problems solved by technology

In case of a sudden rainstorm, the temperature drops sharply, and the temperature change can reach more than 30-50°C. The stress caused by this temperature difference can easily cause cracks in the plastering mortar layer and the finishing paint layer, and the plastering mortar layer and the finishing paint layer If the temperature is too high, the polystyrene board will produce irreversible thermal shrinkage deformation, and it will also cause severe cracking of the plastering mortar layer and the finishing paint layer, losing the role of decoration and protection

What is more serious is that once the surface of the external thermal insulation system of the external wall cracks, rainwater or water vapor will enter the thermal insulation layer of the polystyrene board and the bonding mortar layer along the cracks, which will reduce the bonding strength of the polystyrene board and cause the external thermal insulation system to fall off. , causing a safety hazard

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