Process for constructing insulating wall by adhering polyphenyl plates, filling polyurethane and spreading plaster in a combing way

Abstract

The invention discloses a process for constructing an insulating wall by adhering polyphenyl plates, filling polyurethane and spreading plaster in a combing way, comprising the following steps: (1) adhering polyphenyl plates to a base wall by leaving a gap of 10-100 mm between adjacent polyphenyl plates; (2) after the bonding strength of the polyphenyl plates and the base wall being more than 60 percent of the designed bonding strength of the polyphenyl plates and the base wall, filling rigid polyurethane foams in gaps left among the polyphenyl plates with polyurethane filling or spraying equipment and forming composite polyphenyl plate and polyurethane insulating layers on the base wall; and (3) spreading plaster coating on the insulating layers. The process for constructing the insulating wall by adhering polyphenyl plates, filling polyurethane and spreading plaster in a combing way is easy, has low cost, effectively prevents the plastering coating layers from cracking, seeping, freezing, thawing and stripping in the gaps among the polyphenyl plates and can greatly prolong the service life of the insulating layer of the wall and improve the insulating effect of the wall.

Description

technical field

[0001] The invention belongs to the technical field of building walls, and in particular relates to a construction process for thermal insulation walls in which polystyrene boards and plastering layers are compositely perfused with polyurethane. Background technique

[0002] At present, in building energy-saving projects, polystyrene board thin plastering method is widely used for wall insulation. On the wall, apply a 5mm thick plaster layer on the surface of the polystyrene board, and then embed alkali-resistant mesh or steel wire mesh. This construction method has the following defects: the thin plaster layer has quality and safety hazards such as cracking, water seepage, freezing and thawing, and falling off at the joints between the polystyrene boards, which greatly shortens the service life of the wall insulation layer. The main reason for the above defects is that there is a gap left at the joint when the polystyrene board is pasted, and the thin plast...

Examples

Embodiment 1

[0011] Example 1: A polystyrene board, plastering layer compound pouring polyurethane insulation wall construction process, (1), base wall treatment, the surface of the building wall is treated, so that the insulation layer can be reliably fixed on the base wall Materials; (2) On the base wall, the polystyrene boards are pasted with adhesives by point bonding method or full bonding method to ensure that there is a 10mm wide gap reserved between adjacent polystyrene boards, and at the same time ensure that the joints A distance of 10mm is reserved between the outer edge and the surrounding edges of the polystyrene board (when the spot bonding method is used, the outer edge of the outermost sticking point is reserved for 10mm from the surrounding edge of the polystyrene board; when the full bonding method is used, the distance between the outer edge of the bonding surface and the polystyrene board Reserve 10mm around the edges); (3) When the bonding strength of the adhesive betwe...

Embodiment 2

[0012] Embodiment 2: The difference from Embodiment 1 is that a gap of 50 mm wide is reserved between adjacent polystyrene boards, and a distance of 20 mm is reserved between the outer edge of the joint and the surrounding edges of the polystyrene board, and polyurethane hard foam is added. The width to improve the bonding strength and enhance the thermal insulation performance.

Embodiment 3

[0013] Embodiment 3: The difference from Embodiment 1 is that a 100mm wide gap is reserved between adjacent polystyrene boards, and a distance of 30 mm is reserved between the outer edge of the bonding place and the surrounding edges of the polystyrene board, and polyurethane hard foam is added. The width to improve the bonding strength and enhance the thermal insulation performance.

technical field

[0001] The invention belongs to the technical field of building walls, and in particular relates to a construction process for thermal insulation walls in which polystyrene boards and plastering layers are compositely perfused with polyurethane. Background technique

[0002] At present, in building energy-saving projects, polystyrene board thin plastering method is widely used for wall insulation. On the wall, apply a 5mm thick plaster layer on the surface of the polystyrene board, and then embed alkali-resistant mesh or steel wire mesh. This construction method has the following defects: the thin plaster layer has quality and safety hazards such as cracking, water seepage, freezing and thawing, and falling off at the joints between the polystyrene boards, which greatly shortens the service life of the wall insulation layer. The main reason for the above defects is that there is a gap left at the joint when the polystyrene board is pasted, and the thin plast...

Examples

Embodiment 1

[0011] Example 1: A polystyrene board, plastering layer compound pouring polyurethane insulation wall construction process, (1), base wall treatment, the surface of the building wall is treated, so that the insulation layer can be reliably fixed on the base wall Materials; (2) On the base wall, the polystyrene boards are pasted with adhesives by point bonding method or full bonding method to ensure that there is a 10mm wide gap reserved between adjacent polystyrene boards, and at the same time ensure that the joints A distance of 10mm is reserved between the outer edge and the surrounding edges of the polystyrene board (when the spot bonding method is used, the outer edge of the outermost sticking point is reserved for 10mm from the surrounding edge of the polystyrene board; when the full bonding method is used, the distance between the outer edge of the bonding surface and the polystyrene board Reserve 10mm around the edges); (3) When the bonding strength of the adhesive betwe...

Embodiment 2

[0012] Embodiment 2: The difference from Embodiment 1 is that a gap of 50 mm wide is reserved between adjacent polystyrene boards, and a distance of 20 mm is reserved between the outer edge of the joint and the surrounding edges of the polystyrene board, and polyurethane hard foam is added. The width to improve the bonding strength and enhance the thermal insulation performance.

Embodiment 3

[0013] Embodiment 3: The difference from Embodiment 1 is that a 100mm wide gap is reserved between adjacent polystyrene boards, and a distance of 30 mm is reserved between the outer edge of the bonding place and the surrounding edges of the polystyrene board, and polyurethane hard foam is added. The width to improve the bonding strength and enhance the thermal insulation performance.