External thermal insulation system of water-based simulated natural granite paint finish

Abstract

The invention relates to an external thermal insulation system of a water-based simulated natural granite paint finish. The specific structure is as follows: sequentially arranging a first interface binder layer (2-1), an adhesive mortar layer (3), a polystyrene board thermal insulation layer (4), a second interface binder layer (2-2), a polymer anti-crack mortar rendering layer (6) of a liner fiberglass mesh (5), a polymer flexible putty leveling layer (7), a smooth putty layer (8), a seal primer layer (9) and a finishing layer (10) which are arranged on the external surface of a basal layer wall body (1) from inside to outside, and the invention is characterized in that the finishing layer (10) consists of a flexible ground color layer (10-1), a water-based flexible colorful pattern layer (10-2) and a mat coat protection layer (10-3) sequentially arranged from inside to outside, and the various layers are integrated with the basal layer wall body (1) after drying and curing. With an appropriate price and simple process, the invention makes the building get the effect of granite building material and improves the external thermal insulation and the safety of the external wall.

Description

technical field [0001] The invention relates to an external thermal insulation system decorated with water-based imitation natural granite paint, which belongs to the field of construction. Background technique [0002] Exterior wall insulation technology is a widely used and relatively effective building energy-saving method, most of which use expanded polystyrene board thin plaster external insulation system technology. The specific structure of the system is: base wall + bonding mortar layer + polystyrene board insulation layer + plastering mortar layer (lined with glass fiber mesh cloth) + putty layer + finishing layer. However, due to the small thermal conductivity of the polystyrene board insulation layer, heat is easy to accumulate on the surface of the outer wall and cause its temperature to rise. If there is a heavy rain or a temperature difference between morning and evening, the stress caused by the temperature difference in a short period of time will easily caus...

AI Technical Summary

Problems solved by technology

However, due to the small thermal conductivity of the polystyrene board insulation layer, heat is easy to accumulate on the surface of the outer wall and cause its temperature to rise. If there is a heavy rain or a temperature difference between morning and evening, the stress caused by the temperature difference in a short period of time will easily cause the putty layer and the finish to be damaged. The severe cracking of the upper layer will lose the function of decoration and heat preservation; secondly, because the heat preservation materials are all materials with low density and low strength, the load-bearing capacity is very limited. Not only will it bring safety hazards, but also the problem of cracking and water seepage in the facing layer and insulation system due to its hard material. At present, the commonly used facing layer, such as elastic paint layer, is thin, light, safe, crack-resistant and waterproof. However, the decorative effect is relatively simple, and it cannot achieve the rich and elegant decorative effect of granite stone.

In addition, the external thermal insulation system composed of multi-layer materials has the characteristics of complex structure and many raw materials involved. The materials and properties of each layer structure are different, and jointly affect the performance of the entire system.

Studies have shown that to solve the problem of easy cracking and water seepage of the external thermal insulation system, the matching of materials of each layer is very important. However, the construction of the external thermal insulation system in the construction industry is usually carried out in sections, that is, the fixing and pasting of the thermal insulation board and the finishing project are carried out separately. , little consideration is given to the coordination and matching performance between the layers, which affects the thermal insulation and decorative effects of the final external thermal insulation wall system

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