Environment-friendly flame-retardant polyurethane sandwich panel

Abstract

The utility model belongs to the technical field of sandwich panels, and particularly relates to an environment-friendly flame-retardant polyurethane sandwich panel which comprises a sandwich panel body, and a hard metal plate is wrapped outside the sandwich panel body. A flame-retardant isolation layer, a polyurethane foam layer and a polystyrene foam layer are further arranged in the sandwich panel body, and the flame-retardant isolation layer is arranged between the polyurethane foam layer and the polystyrene foam layer; the flame-retardant isolation layer comprises an aluminum honeycomb and a glass magnesium filler, and the glass magnesium filler is arranged in holes of the aluminum honeycomb; the left side and the right side of the laminboard body are provided with three connectors and three connecting grooves respectively, and the connectors are matched with the connecting grooves. According to the sandwich board, more environment-friendly and flame-retardant materials are adopted to serve as inner core filling, the heat preservation performance of the board is improved, meanwhile, the fireproof performance is improved, the overall weight of the board is reduced, and splicing and using are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of sandwich panel, concretely relates to an environmental protection flame -retardant polyurethane sandwich panel. BACKGROUND

[0002] The sandwich panel has become an ideal choice for building modular houses, temporary offices, exhibition halls and other mobile or temporary buildings due to its characteristics of being convenient for factory prefabrication and on-site rapid installation. The cold storage sandwich panel is mainly composed of two layers of metal plates (such as galvanized steel plates or aluminum plates) and polyurethane foam filled in the middle, and is widely used for manufacturing thermal insulation doors, enclosure structures and the like to maintain the stability of the internal low-temperature environment.

[0003] The existing polyurethane sandwich panel structure is relatively complex, most of the inner core structures focus on the effect of heat preservation and cold prevention, but cannot achieve fireproofing and flame retardation. Once on fire, there is a risk of large-area continuous burning. In order to ensure the sealing effect after splicing, professional technology and tools are required during installation, and a large amount of glue and sealant are used for bonding, which is difficult to operate and also produces toxic gas, which is not conducive to the storage of food in the cold storage. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing an environmental protection flame -retardant polyurethane sandwich panel, including sandwich panel body, the sandwich panel body outside is wrapped with hard metal plate, the sandwich panel body inside still includes flame -retardant insulating layer, polyurethane foam layer and polystyrene foam layer, the flame -retardant insulating layer sets up between the polyurethane foam layer and the polystyrene foam layer, the flame -retardant insulating layer includes aluminium honeycomb and glass magnesium filler, the glass magnesium filler sets up at the hole of aluminium honeycomb, the left and right sides of sandwich panel body is provided with three linkers and link grooves respectively, the linker is in accord with the link groove.

[0005] The linker is an I-shaped, and the link grooves are communicated with square sockets.

[0006] Further comprising a link plate, the link plate has a limiting strip on the inner side, and the limiting strip can be clamped in the I-shaped notch of the linker.

[0007] The link plate has a limiting plate at both ends.

[0008] The utility model has the advantages of:

[0009] By improving the structure inside the polyurethane sandwich panel, adding the honeycomb fireproof material as the framework, and filling the glass magnesium filler in the framework, the overall hardness of the sandwich panel is improved, and the flammable material is isolated to prevent the fire from spreading rapidly after the fire; by setting the connecting mechanism on both sides of the sandwich panel and inserting the connecting plate as the limiting, the sandwich panels are quickly spliced and installed without using glue, the toxin harm caused by the glue is eliminated while the heat preservation and sealing performance are ensured, and green and environment-friendly production and assembly are realized.

[0010] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.

[0011] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the specific embodiment of the present application or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0013] Figure 1 is the single sandwich panel structure diagram of the embodiment of the present application;

[0014] Figure 2 is the plane schematic diagram of the sandwich panel and the connecting plate of the embodiment of the present application;

[0015] Figure 3 is the internal state schematic diagram of the sandwich panel of the embodiment of the present application;

[0016] Figure 4 is the three-dimensional view of the flame-retardant isolation layer of the embodiment of the present application;

[0017] Figure 5 is the splicing and installation state diagram of the sandwich panel of the embodiment of the present application.

[0018] In the drawings:

[0019] Sandwich panel body 1, hard metal plate 101, polyurethane foam layer 102, flame-retardant isolation layer 103, polystyrene foam layer 104, aluminum honeycomb 105, glass magnesium filler 106, connecting groove 2, socket 3, connecting head 4, connecting plate 5, limiting strip 501. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] like Figures 1 to 5 As shown, this embodiment provides an environmentally friendly flame-retardant polyurethane sandwich panel, including a sandwich panel body 1. The sandwich panel body 1 is externally wrapped with a rigid metal plate 101. In this embodiment, galvanized color steel plate is used as the rigid metal plate 101. The sandwich panel body 1 also includes a flame-retardant insulating layer 103, a polyurethane foam layer 102, and a polystyrene foam layer 104 inside. Both foam layers are lightweight and have strong thermal insulation properties; however, their flame-retardant effects are not good. Therefore, the flame-retardant insulating layer 103 is disposed between the polyurethane foam layer 102 and the polystyrene foam layer 104 to play a fireproof and flame-retardant role. Figure 3 and Figure 4 As shown, the flame-retardant insulating layer 103 includes an aluminum honeycomb 105 and a magnesium oxide filler 106. The magnesium oxide filler 106 is disposed in the holes of the aluminum honeycomb 105. The aluminum honeycomb 105 is made by processing aluminum strips through a series of processes, such as stretching, cutting, forming, and welding, to form a honeycomb-shaped aluminum core plate, which improves rigidity and strength without significantly increasing the overall weight. The magnesium oxide filler 106 is a composite material. During the manufacturing process, glass fiber is used as a reinforcing material and mixed evenly with magnesium insulation material. Then, the materials are tightly bonded by heating and pressing, which has the characteristics of insulation, heat resistance, and high mechanical strength.

[0022] The sandwich panel body 1 has three connecting heads 4 and connecting grooves 2 on its left and right sides, respectively, with the connecting heads 4 fitting into the connecting grooves 2. The connecting heads 4 are I-shaped, and the connecting grooves 2 have square insertion openings 3 on both sides. It also includes a connecting plate 5, with a limiting strip 501 on its inner side, which can be precisely engaged within the I-shaped notch of the connecting head 4. The connecting plate 5 has limiting plates at both ends. Figure 1 , Figure 2 and Figure 5As shown, during installation, the I-shaped adapter 4 is inserted into the adapter groove 2, and whether the insertion is in place can be seen through the square socket 3, at this time, the limiting strip 501 of the adapter plate 5 is inserted from the square socket 3 and clamped at the square notch of the I-shaped adapter 4, so that the installation is completed, the limiting plates at both ends of the adapter plate 5 are matched with the notches at four corners of the core board body 1, so that the flatness of the upper and lower edges of the assembled core board array is ensured, and the gap during splicing can be effectively shielded, without using glue, and the installation and sealing effects can be achieved.

[0023] The various devices (parts without specific structure) selected in the application are all general standard parts or parts known to those skilled in the art, and their structures and principles can be known by the skilled person through a technical manual or through a conventional experimental method.

[0024] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] In the description of the present application, it should be pointed out that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. An environmentally friendly flame-retardant polyurethane sandwich panel, comprising a sandwich panel body (1), wherein the sandwich panel body (1) is externally wrapped with a rigid metal plate (101); characterized in that: The sandwich panel body (1) also includes a flame-retardant insulating layer (103), a polyurethane foam layer (102), and a polystyrene foam layer (104). The flame-retardant insulating layer (103) is disposed between the polyurethane foam layer (102) and the polystyrene foam layer (104). The flame-retardant insulating layer (103) includes an aluminum honeycomb (105) and a magnesium oxide filler (106). The magnesium oxide filler (106) is disposed in the holes of the aluminum honeycomb (105). Three connectors (4) and connector grooves (2) are respectively provided on the left and right sides of the sandwich panel body (1). The connectors (4) fit into the connector grooves (2).

2. The environmentally friendly flame-retardant polyurethane sandwich panel according to claim 1, characterized in that: The connector (4) is I-shaped, and the two sides of the connector groove (2) are connected to square sockets (3).

3. The environmentally friendly flame-retardant polyurethane sandwich panel according to claim 2, characterized in that: It also includes a connecting plate (5), the inner side of which has a limiting strip (501), the limiting strip (501) can be just locked in the I-shaped notch of the connecting head (4).

4. The environmentally friendly flame-retardant polyurethane sandwich panel according to claim 3, characterized in that: The connecting plate (5) has limit plates at both ends.

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