Exterior wall exterior heat preservation system for spray coating polyurethane rigid foam

Abstract

The invention relates to an outer heat insulation system for an outer wall sprayed with polyurethane hard bubble. The system is composed of moistureproof priming paint, polyurethane hard bubble, interface slurry, a levelling layer, alkali resistant grid cloth, plaster slurry, and a base wall, wherein the polyurethane hard bubble is directly arranged on the base wall surface coated with moistureproof priming paint, the outside of the polyurethane hard bubble is provided with the levelling layer, the interface slurry is disposed between the levelling layer and the polyurethane hard bubble, the outside of the levelling layer is provided with the alkali resistant grid cloth, and the outside of the alkali resistant grid cloth is provided with the plaster slurry. The system of the invention has simple structure and rapid construction, can effectively prevent the empty drum, crack, and water seepage of the wall surface, and has fireproof function.

Description

technical field [0001] The invention relates to an external thermal insulation system for spraying polyurethane rigid foam external walls. The system has the functions of waterproof, thermal insulation and fire resistance, and can effectively prevent a series of problems such as hollowing, cracking and water seepage of the thermal insulation wall. It can be used in the construction field and belongs to the exterior Technical field of external wall insulation system. Background technique [0002] One of the most important measures for building energy saving is to establish thermal insulation and energy-saving systems for walls. At present, my country's wall thermal insulation and energy-saving systems mainly include external wall internal thermal insulation systems, wall sandwich thermal insulation systems and external wall external thermal insulation systems. Among them, external wall thermal insulation systems The energy-saving system has become the mainstream form of wall i...

AI Technical Summary

Problems solved by technology

Therefore, if the leveling material of the polyurethane rigid foam surface layer is made of rigid materials such as cement mortar or polymer modified cement mortar, it is easy to cause the surface layer to crack, bulge, fall off and other undesirable phenomena.

[0009] Due to the relatively short period of use of sprayed polyurethane thermal insulation systems in my country, coupled with the immaturity of the current market, the use of sealing primers for the base wall of sprayed polyurethane thermal insulation systems, interface treatment agents for sprayed polyurethane crust surfaces and leveling materials It is rather confusing, which leaves a hidden danger to the safety of the spray polyurethane rigid foam insulation system

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