Flame-retardant plastic shell

Abstract

The utility model discloses a flame-retardant plastic shell, and belongs to the field of plastic materials. A flame-retardant plastic outer shell comprises a plastic outer shell body, a plastic top plate is fixed to the upper side of the plastic outer shell body, a plastic inner shell is arranged on the inner side of the plastic outer shell body, a notch is formed in the inner side of the plastic outer shell body, and magnesium hydroxide is inserted into the inner side of the notch. The flame-retardant plates inserted into the notches can be subjected to thermal decomposition reaction when heated, a large amount of heat is absorbed, the temperature of materials is reduced, the combustion speed is slowed down, meanwhile, the reaction type flame retardant is smeared on the inner side and the outer side of the plastic shell, the reaction type flame retardant chemically reacts with combustibles at high temperature, the combustion process is slowed down or stopped, and the combustion efficiency is improved. And the flame-retardant plate and the reactive flame retardant smeared on the outer side can form a dual flame-retardant effect, so that the problem that an existing plastic shell is only provided with a single plastic shell and cannot resist flame is solved.

Description

Technical Field

[0001] The utility model relates to the field of plastic materials, in particular to a flame-retardant plastic shell. Background Art

[0002] Existing plastic shells are usually made of plastic materials by injection molding. The use of plastic shells is wide. With the improvement of living standards, people now like some luxury items, such as gold and silver jewelry. These are relatively expensive items and need to be properly kept. There are often news reports of fire scenes. A fire burns all the things in the house. To store these items at home, closed wooden cabinets or ordinary plastic shells are generally used. In order to better protect our own precious items, it is necessary to design a fireproof shell for storing valuables. For this reason, we propose a flame-retardant plastic shell to solve the shortcomings of the existing technology. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a flame retardant plastic shell, which solves the problems raised by the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A flame-retardant plastic shell comprises: a plastic shell, a plastic top plate is fixed on the upper side of the plastic shell, a plastic inner shell is arranged on the inner side of the plastic shell, a notch is opened on the inner side of the plastic shell, a flame-retardant plate is inserted into the inner side wall of the notch, and magnesium hydroxide is arranged on the flame-retardant plate.

[0006] Preferably, a connection block is welded on the inner side of the plastic shell, and a plurality of screw holes 2 are formed on the connection block.

[0007] The screw hole 1 and the groove opened on the plastic inner shell correspond to the connection block and the screw hole 2 fixed on the plastic outer shell respectively, and are fixed by screws.

[0008] Preferably, reactive flame retardant is applied on both the inner and outer sides of the plastic shell.

[0009] At high temperatures, the reactive flame retardant's decomposition products react chemically with the combustibles to slow down or prevent the combustion of the combustibles. At the same time, the reactive flame retardant can form a double flame retardant with the flame retardant plate plugged into the notch.

[0010] Preferably, four threaded holes 1 are provided on the plastic top plate, and the four threaded holes 1 are provided in a rectangular shape.

[0011] Preferably, the plastic inner shell is provided with four groups of threaded holes 2, which are arranged in a rectangular shape. The plastic inner shell is also provided with a plurality of grooves, and a plurality of screw holes 1 are arranged at the bottom of the plurality of grooves.

[0012] Preferably, the inner sides of the threaded hole 1 and the threaded hole 2 are threadedly connected with bolts.

[0013] Preferably, the second screw hole corresponds to the first screw hole and is fixed by a screw.

[0014] After being fixed, the plastic inner shell is located inside the plastic outer shell. After the equipment to be accommodated is subsequently loaded, the plastic top plate is matched with the threaded hole 1 opened on the plastic inner shell and threadedly fixed by bolts.

[0015] Compared with the prior art, the utility model provides a flame retardant plastic shell, which has the following beneficial effects:

[0016] When a fire or misfire occurs in the home, the flame retardant board inserted in the groove of the flame retardant plastic shell can undergo a thermal decomposition reaction when heated, absorb a large amount of heat, reduce the temperature of the material, and delay the combustion rate. At the same time, the inside and outside of the plastic shell are coated with a reactive flame retardant, and the reactive flame retardant chemically reacts with the combustible at high temperature to slow down or prevent the combustion process. The flame retardant board and the reactive flame retardant coated on the outside can form a double flame retardant effect, which greatly protects our property safety and solves the safety problem that the existing wooden cabinets or ordinary plastic shells cannot protect valuables in the event of a fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is an exploded view of the utility model;

[0019] Figure 3 This is an exploded view of the utility model;

[0020] Figure 4 This is a schematic diagram of the exploded structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the exploded structure of the utility model;

[0022] Figure 6 It is an enlarged view of point A of the present utility model.

[0023] In the figure: 1. plastic outer shell; 2. plastic top plate; 21. threaded hole one; 22. bolt; 3. plastic inner shell; 31. threaded hole two; 32. groove; 33. screw hole one; 4. notch; 5. connecting block; 6. screw hole two; 7. reactive flame retardant; 8. flame retardant plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-6 A flame-retardant plastic shell comprises: a plastic shell 1, a plastic top plate 2 is fixed on the upper side of the plastic shell 1, a plastic inner shell 3 is arranged on the inner side of the plastic shell 1, a notch 4 is opened on the inner side of the plastic shell 1, a flame-retardant plate 8 is inserted into the inner side wall of the notch 4, and magnesium hydroxide is arranged on the flame-retardant plate 8.

[0026] What needs to be explained is the fixing method of this patent. It does not necessarily require the use of screws. It can be fixed by hinges or magnets. There are many existing technologies without a box cover. Therefore, this patent does not elaborate on the technical solutions of other box covers.

[0027] Working principle: Before using the shell, first insert the flame retardant plate 8 into the slot 4. After the insertion is completed, the screw hole 1 33 and the groove 32 opened on the plastic inner shell 3 correspond to the connecting block 5 and the screw hole 2 6 fixed on the plastic outer shell 1 respectively, and are fixed by screws. After fixation, the plastic inner shell 3 is located on the inner side of the plastic outer shell 1. Subsequently, after the equipment to be accommodated is loaded, the plastic top plate 2 is matched with the screw hole 2 31 opened on the plastic inner shell 3 through the threaded hole 1 21 opened, and is threadedly fixed by bolts 22, and the flame retardant plate 8 is fixed at the same time.

[0028] When a fire or misfire occurs at home, when the plastic shell 1 encounters combustion, the flame retardant plate 8 inserted in the slot 4 will undergo a thermal decomposition reaction when heated, absorbing a large amount of heat, thereby reducing the temperature of the material and slowing down the burning rate of the material. During the entire flame retardant process, the magnesium hydroxide arranged on the flame retardant plate 8 will not produce any harmful substances, and the decomposed products can not only be flame retardant, but also absorb a large amount of harmful gases and smoke generated by the combustion of polymers such as plastics and rubber. At the same time, a reactive flame retardant 7 is applied to the inner and outer sides of the plastic shell 1, and the reactive flame retardant 7 reacts chemically with the combustibles at high temperatures, slowing down or preventing the combustion of the combustibles. At the same time, the reactive flame retardant 7 can form a double flame retardant with the magnesium hydroxide inserted in the slot 4.

[0029] At the same time, the magnesium hydroxide arranged on the flame retardant plate 8 inserted in the notch 4 is an inorganic substance with a chemical formula of Mg(OH)2; and the chemical reaction equation of Mg(OH)2 flame retardancy is Mg(OH)2 → MgO + H2O. In this reaction, magnesium hydroxide is decomposed into magnesium oxide and water by heat, which is an endothermic reaction, which can reduce the temperature of the flame on the surface of the polymer material, slow down the degradation rate of the polymer, and reduce the amount of combustible gas produced. In addition, a large amount of water released during the decomposition process can cover the flame, reduce the oxygen concentration in the air on the combustion surface, and slow down the combustion effect. The MgO produced by the decomposition is a good refractory material, which covers the surface of the polymer to block heat conduction and heat radiation, thereby improving the ability of the polymer to resist flames, and can also play a role in isolating air and preventing combustion.

[0030] A connecting block 5 is welded to the inner side of the plastic housing 1 , and a plurality of screw holes 6 are formed on the connecting block 5 .

[0031] The screw hole 1 33 and the groove 32 provided on the plastic inner shell 3 correspond to the connecting block 5 and the screw hole 2 6 fixed on the plastic outer shell 1 respectively, and are fixed by screws.

[0032] The inside and outside of the plastic shell 1 are coated with a reactive flame retardant 7 .

[0033] At high temperature, the reactive flame retardant 7 reacts chemically with the combustibles through its decomposition products to slow down or prevent the combustion of the combustibles. Meanwhile, the reactive flame retardant 7 and the flame retardant plate 8 plugged into the notch 4 can form a double flame retardant.

[0034] The plastic top plate 2 is provided with four threaded holes 21 , and the four threaded holes 21 are provided in a rectangular shape.

[0035] The plastic inner shell 3 is provided with four groups of threaded holes 2 31 , which are arranged in a rectangular shape. The plastic inner shell 3 is also provided with a plurality of grooves 32 , and a plurality of screw holes 1 33 are arranged at the bottom of the plurality of grooves 32 .

[0036] The inner sides of the threaded hole 1 21 and the threaded hole 2 31 are threadedly connected with bolts 22 .

[0037] The second screw hole 6 corresponds to the first screw hole 33 and is fixed by screws.

[0038] After being fixed, the plastic inner shell 3 is located inside the plastic outer shell 1 . After the equipment to be accommodated is subsequently loaded, the plastic top plate 2 is matched with the threaded hole 21 opened on the plastic inner shell 3 and threadedly fixed by bolts 22 .

Claims

1. A flame retardant plastic shell, comprising: A plastic shell (1), wherein a plastic top plate (2) is fixed on the upper side of the plastic shell (1), characterized in that a plastic inner shell (3) is arranged on the inner side of the plastic shell (1), a notch (4) is opened on the inner side of the plastic shell (1), and a flame retardant plate (8) is inserted into the inner side wall of the notch (4).

2. The flame retardant plastic shell according to claim 1, characterized in that: A connecting block (5) is welded to the inner side of the plastic shell (1), and a plurality of screw holes (6) are provided on the connecting block (5).

3. The flame retardant plastic shell according to claim 2, characterized in that: The inner and outer sides of the plastic shell (1) are coated with a reactive flame retardant (7).

4. The flame retardant plastic shell according to claim 1, characterized in that: The plastic top plate (2) is provided with four threaded holes (21), and the four threaded holes (21) are arranged in a rectangular shape.

5. The flame retardant plastic shell according to claim 1, characterized in that: The plastic inner shell (3) is provided with four groups of threaded holes (31), the four groups of threaded holes (31) are provided in a rectangular shape, the plastic inner shell (3) is also provided with a plurality of grooves (32), the bottoms of the plurality of grooves (32) are provided with a plurality of screw holes (33).

6. The flame retardant plastic shell according to claim 4, characterized in that: The inner sides of the threaded hole 1 (21) and the threaded hole 2 (31) are threadedly connected with bolts (22).

7. The flame retardant plastic shell according to claim 2, characterized in that: The second screw hole (6) corresponds to the first screw hole (33) and is fixed by means of screws.

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