A kind of anti-crack waterproof self-healing membrane external wall external thermal insulation system and preparation method thereof

Abstract

The invention discloses an anti-crack waterproof self-healing film outer wall external heat insulation system and a preparing method thereof. A heat insulation layer is of a multi-layer structure, and an inner self-healing film layer, a modified inorganic heat insulation mortar layer, a polymer anti-crack mortar layer and a veneer layer which are closely attached in sequence are arranged from inside to outside. An alkali-resisting gridding cloth layer and an outer self-healing film layer are sandwiched in the polymer anti-crack mortar layer. The outer self-healing film layer is arranged on the outer side of the alkali-resisting gridding cloth layer. A self-healing film comprises activated silica modified acrylic resin, silica modified ethylene-vinyl acetate resin, dibutyl phthalate, an alkali activator, active fumed silica, waterborne additives, water and the like. The invention further discloses the preparing method of the anti-crack waterproof self-healing film outer wall external heat insulation system. According to the anti-crack waterproof self-healing film outer wall external heat insulation system and the preparing method thereof provided by the invention, the functions of water resistance and heat insulation are integrated, the anti-crack performance of the system can be greatly improved, and the problem that inorganic heat insulation mortar is prone to sucking water at present is solved.

Description

technical field [0001] The invention relates to a building heat preservation system integrating heat preservation and waterproofing and a preparation method thereof, in particular to a crack-resistant waterproof self-healing membrane external wall heat preservation system and a preparation method thereof. Background technique [0002] At present, the existing inorganic mortar external wall thermal insulation system is composed of expanded perlite, vitrified microspheres, etc., which are very easy to absorb water, as the main thermal insulation materials. Due to the high water absorption of perlite, the thermal conductivity increases after water absorption, and the thermal insulation performance drops sharply; and because a large amount of water exists in the perlite that constitutes the insulation layer, when the temperature drops below zero degrees Celsius in winter, it freezes and produces abnormal expansion. , causing the insulation layer to crack and fall off in severe c...

AI Technical Summary

Problems solved by technology

Due to the high water absorption of perlite, the thermal conductivity increases after absorbing water, and the thermal insulation performance drops sharply; and because a large amount of water exists in the perlite that constitutes the thermal insulation layer, when the temperature drops below zero degrees Celsius in winter, it will freeze and produce abnormal expansion. , causing the insulation layer to crack and fall off in severe cases, seriously affecting the safety and service life of the external wall insulation system

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