Thermal insulation and sound absorption structure of building external wall

Abstract

The present invention discloses a thermal insulation and sound absorption structure of a building external wall. The structure comprises a wall body, a rock wool layer is disposed at an inner wall of the wall body while a reflection-type thermal insulating layer is disposed at an outer wall of the wall body, the rock wool layer and the wall body are fixed by building expansion anchors disposed therebetween, a waterproof mortar layer is disposed at the other side of the rock wool layer, the reflection-type thermal insulating layer and the wall body are bonded through a bonding layer, a protective layer is disposed at the other side of the reflection-type thermal insulating layer, the reflection-type thermal insulating layer is composed of aluminum foil plates and elastic glue sticks, the aluminum foil plates are folded to be wave-shaped or zigzag, each top part of the aluminum foil plates is attached with one elastic glue stick so as to form the reflection-type thermal insulating layer, the elastic glue sticks are high-elasticity polyurethane rubber wear-resisting buffering stick pins, and the diameter and length of the elastic glue sticks are defined according to the shape of the aluminum foil plates. Under the condition of meeting strength requirements of the outer wall, the wall body has excellent inflaming-retarding and heat-shielding performance, noises in an outer wall environment are isolated at the same time, and within a certain cost range, the building outer wall can have a special functional performance.

Description

technical field [0001] The invention relates to the technical field of building exterior walls, in particular to a heat-insulating and sound-absorbing structure of building exterior walls. Background technique [0002] Classified according to the position and direction of the wall in the building: it is divided into two types: exterior wall and interior wall. The walls arranged along the perimeter of the building are called exterior walls, and the walls surrounded by exterior walls are called interior walls. The external environment and the building's indoor thermal environment mainly conduct heat transfer through three forms of heat radiation, heat convection and heat conduction, which affect the temperature of the indoor environment and the energy saving of buildings. At present, the conventional external wall insulation system mainly adopts the method of blocking to reduce heat conduction. Nowadays, all kinds of external thermal insulation materials for external walls g...

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Problems solved by technology

Nowadays, all kinds of external insulation materials for external walls generally have poor bonding with the base wall. Under the influence of external forces such as freeze-thaw resistance and wind pressure, they are prone to deformation and falling off, resulting in a decrease in the barrier performance of the wall.

Especially in recent years, the shortcomings of flammability of some organic types of external wall insulation materials that have been widely used in practical applications have also been highlighted intensively. At the same time, the existing external walls do not have the effect of sound absorption and sound insulation, or the effect Not ideal, so it is necessary to improve the design, installation, anchoring process and flame retardancy of the external wall insulation and sound-absorbing system

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