A highly flame-retardant polyurethane foam insulation board

Abstract

The utility model discloses a highly flame-retardant polyurethane foam insulation board, comprising an insulation board body, an outer end surface of the insulation board body is provided with an outer flame-retardant layer, an inner end surface of the insulation board body is provided with an inner flame-retardant layer, the inner flame-retardant layer is made of a flexible material, the edge of the inner flame-retardant layer protrudes from the edge of the insulation board body, and the width of the inner flame-retardant layer protruding from the edge of the insulation board body is greater than or equal to the thickness of the insulation board body. By laying the inner flame-retardant layer with the protruding edge on the inner end surface of the insulation board body, the edge of the inner flame-retardant layer is folded outward during construction to protect the side of the insulation board body, thereby improving the flame-retardant performance of the insulation board body; the size of the insulation board body and the inner flame-retardant layer can be conveniently adjusted by cutting, thereby facilitating on-site construction.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal insulation layer materials, in particular to a highly flame-retardant polyurethane foam thermal insulation board. Background Art

[0002] Insulation boards are mainly used to reduce the heat transfer coefficient of the building's exterior wall to reduce the impact of outdoor temperature on indoor temperature and achieve energy saving. Currently, a flame retardant layer is often applied on the outer side of the insulation board to improve its flame retardancy. However, the surrounding surfaces of the insulation board with this structure are exposed. Once the insulation board is ignited, the fire will spread along the edge of the insulation board.

[0003] The Chinese invention patent application with application publication number CN103161275A discloses a fire-retardant thermal insulation board structure for building exterior walls, which realizes flame retardancy around the thermal insulation board by forming a thermal insulation board edge shielding stack edge protruding from the surface of the fire-retardant board body at the edge of the fire-retardant board body facing the thermal insulation board body. However, this structure is fixed, the size needs to be customized according to the site, and it is not suitable for on-site installation.

[0004] Based on the above technical problems, the present application proposes a highly flame retardant polyurethane foam insulation board. Utility Model Content

[0005] The purpose of the utility model is to provide a highly flame-retardant polyurethane foam insulation board to solve the technical problems mentioned in the background technology. The purpose of the utility model is achieved through the following technical solutions:

[0006] A highly flame-retardant polyurethane foam insulation board comprises an insulation board body, an outer end surface of the insulation board body is provided with an outer flame-retardant layer, an inner end surface of the insulation board body is provided with an inner flame-retardant layer, the inner flame-retardant layer is made of a flexible material, an edge of the inner flame-retardant layer protrudes from an edge of the insulation board body, and a width of the inner flame-retardant layer protruding from the edge of the insulation board body is greater than or equal to the thickness of the insulation board body.

[0007] Furthermore, the insulation board body is a rectangular board made of polyurethane foam.

[0008] Furthermore, the outer flame retardant layer is a hard flame retardant board.

[0009] Furthermore, the inner flame retardant layer is flame retardant glass fiber cloth.

[0010] The technical solution provided in the embodiments of the present application has at least the following technical effects or advantages:

[0011] 1. By laying an inner flame retardant layer with protruding edges on the inner end surface of the insulation board body, the edge of the inner flame retardant layer is folded outward during construction to protect the side of the insulation board body, thereby improving the flame retardant performance of the insulation board body;

[0012] 2. The size of the insulation board body and the inner flame retardant layer can be easily adjusted by cutting, which facilitates on-site construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0015] Figure 2 This is the main view of an embodiment of the present application.

[0016] Markings in the attached figure: 1. Insulation board body; 2. Outer flame retardant layer; 3. Inner flame retardant layer. DETAILED DESCRIPTION

[0017] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the drawings and specific implementation methods of the specification. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0018] like Figure 1 , Figure 2 A highly flame-retardant polyurethane foam insulation board shown includes an insulation board body 1, an outer end surface of the insulation board body 1 is coated with an outer flame-retardant layer 2, and an inner end surface of the insulation board body 1 is coated with an inner flame-retardant layer 3. The insulation board body 1 is a rectangular plate made of polyurethane foam. The outer flame-retardant layer 2 is a hard flame-retardant board such as gypsum board, rock board or silicate board, which is used to achieve flame retardancy of the outer end surface of the insulation board body 1 and at the same time play a supporting and protective role for the outer end surface of the insulation board body 1.

[0019] The inner flame retardant layer 3 is a flame retardant glass fiber cloth made of flexible material. The edge of the inner flame retardant layer 3 protrudes from the edge of the insulation board body 1, and the width of the inner flame retardant layer 3 protruding from the edge of the insulation board body 1 is equal to the thickness of the insulation board body 1, so that the inner flame retardant layer 3 can completely cover the edges of the insulation board body 1.

[0020] Preferably, the width of the inner flame retardant layer 3 protruding from the edge of the insulation board body 1 is greater than the thickness of the insulation board body 1, so that flame retardant can be filled between the inner flame retardant layer 3 and the insulation board body 1 to further improve the flame retardant performance of the insulation board.

[0021] The technical solution provided in the embodiments of the present application has at least the following technical effects or advantages:

[0022] 1. By laying an inner flame retardant layer with protruding edges on the inner end surface of the insulation board body, the edge of the inner flame retardant layer is folded outward during construction to protect the side of the insulation board body, thereby improving the flame retardant performance of the insulation board body;

[0023] 2. The size of the insulation board body and the inner flame retardant layer can be easily adjusted by cutting, which facilitates on-site construction.

[0024] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0025] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A highly flame retardant polyurethane foam insulation board, characterized in that: It includes an insulation board body, the outer end surface of the insulation board body is provided with an outer flame retardant layer, the inner end surface of the insulation board body is provided with an inner flame retardant layer, the inner flame retardant layer is made of flexible material, the edge of the inner flame retardant layer protrudes from the edge of the insulation board body, and the width of the inner flame retardant layer protruding from the edge of the insulation board body is greater than or equal to the thickness of the insulation board body.

2. A highly flame retardant polyurethane foam insulation board according to claim 1, characterized in that: The heat-insulating board body is a rectangular board made of polyurethane foam.

3. A highly flame retardant polyurethane foam insulation board according to claim 1, characterized in that: The outer flame retardant layer is a hard flame retardant board.

4. A highly flame retardant polyurethane foam insulation board according to claim 1, characterized in that: The inner flame retardant layer is flame retardant glass fiber cloth.

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