High-temperature-resistant flame-retardant PVC (polyvinyl chloride) plastic sheet

Abstract

The utility model belongs to the technical field of plastic sheets, and discloses a high-temperature-resistant flame-retardant PVC (polyvinyl chloride) plastic sheet which comprises a PVC plastic body, a first bump is fixedly connected to the bottom end of the PVC plastic body, a first elastic flame-retardant layer is arranged at the bottom end of the first bump, the first bump slides in a sliding groove in the top end of the first elastic flame-retardant layer, and a second elastic flame-retardant layer is arranged at the bottom end of the first elastic flame-retardant layer. A first composite flame-retardant layer is attached to the bottom end of the first elastic flame-retardant layer, a first adhesive is arranged at the bottom end of the first composite flame-retardant layer, a first flame retardant protective layer is fixedly connected to the bottom end of the first adhesive, a first wear-resistant layer is fixedly connected to the bottom end of the first flame retardant protective layer, and a plurality of groups of circular grooves are formed in the bottom end of the first wear-resistant layer; by means of the scheme, the problems that when the surface of the PVC plastic sheet is damaged, internal materials are rapidly burnt, the high-temperature resistance is poor, the internal materials can be burnt under the condition of long-term high-temperature burning, and the good fireproof and flame-retardant effects cannot be achieved are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic sheets, in particular to a high-temperature resistant and flame-retardant PVC plastic sheet. Background Art

[0002] PVC is an amorphous white powder with a low degree of branching and a glass transition temperature of 77 to 90°C. It begins to decompose at around 170°C and has poor stability to light and heat. At temperatures above 100°C or after prolonged exposure to sunlight, it will decompose to produce hydrogen chloride, which will further autocatalytically decompose, causing discoloration and a rapid decline in physical and mechanical properties. In practical applications, stabilizers must be added to improve stability to heat and light.

[0003] At the same time, the patent application number 201820567759.1 discloses a flame-retardant PVC plastic sheet, including a PVC plastic body, the upper and lower surfaces of the PVC plastic body are coated with a plastic flame retardant layer, the PVC plastic body includes several groups of plastic monomers with the same structure, the upper and lower surfaces of each of the plastic monomers are provided with an elastic flame retardant layer, the elastic flame retardant layer includes two layers of elastic memory belts, the interior of the two layers of the elastic memory belts is provided with flame retardant asbestos, and a number of vertical flame retardant layers are provided in the vertical direction to the elastic flame retardant layer, each of the vertical flame retardant layers includes a supporting inner column and a talcum powder layer, a composite glass fiber layer is provided between two adjacent supporting inner columns, and a number of sliding friction blocks are provided between the composite glass fiber layer and the supporting inner column.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned flame-retardant PVC plastic sheet has a flame retardant added during the production and calendering process of the plastic sheet, and the flame retardant is stirred and recombined to make the plastic have mobile flame retardant ability. However, in actual applications, this material has limited flame retardant ability and no wear-resistant layer on the surface. In actual use, when the surface of the PVC plastic sheet is damaged, the internal material burns quickly, and the high temperature resistance is poor. It will also burn under long-term high temperature burning, and cannot play a good fire retardant role. Utility Model Content

[0005] In order to solve the problems raised in the above-mentioned background technology, the utility model provides a high-temperature resistant and flame-retardant PVC plastic sheet. During the production and calendering process of the plastic sheet, a flame retardant is added for stirring to achieve molecular recombination, and wear-resistant materials are added to the PVC plastic sheet. During daily use, the plastic elastic part is interconnected with the elastic flame retardant layer, the composite flame retardant layer, the plastic elastic part and the flame retardant protective layer, and there is no wear-resistant layer on the surface. During actual use, the flame retardant ability is improved, the fire hazard is reduced, and it can have the advantages of a good fire prevention and flame retardant effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature resistant and flame-retardant PVC plastic sheet, comprising a PVC plastic body, a first protrusion fixedly connected to the bottom end of the PVC plastic body, a first elastic flame-retardant layer arranged at the bottom end of the first protrusion, a slide groove being provided at the top end of the first elastic flame-retardant layer, the first protrusion sliding inside the slide groove at the top end of the first elastic flame-retardant layer, a first composite flame-retardant layer being adhered to the bottom end of the first elastic flame-retardant layer, a first adhesive being provided at the bottom end of the first composite flame-retardant layer, a first flame retardant protective layer being fixedly connected to the bottom end of the first adhesive, a first wear-resistant layer being fixedly connected to the bottom end of the first flame retardant protective layer, a plurality of groups of circular grooves being provided at the bottom end of the first wear-resistant layer, and a wear-resistant material being provided at the top end of the first wear-resistant layer.

[0007] Preferably, a flame retardant plate is disposed on the outside of the PVC plastic body, and the flame retardant plate is disposed in two groups. Glass fibers are disposed inside the first flame retardant protective layer, and the glass fibers are disposed in several groups.

[0008] Preferably, a second protrusion is fixedly connected to the top of the PVC plastic body, a second composite flame retardant layer is arranged at the top of the second protrusion, a slide groove is provided at the bottom of the second composite flame retardant layer, and the second protrusion slides inside the slide groove of the second composite flame retardant layer.

[0009] Preferably, a second adhesive is fixedly connected to the top of the second composite flame-retardant layer, and a second elastic flame-retardant layer is attached to the top of the second adhesive.

[0010] Preferably, a second wear-resistant layer is fixedly connected to the top of the second elastic flame-retardant layer, a plurality of groups of circular grooves are provided on the top of the second wear-resistant layer, and the second wear-resistant layer is made of a wear-resistant material.

[0011] Preferably, a connecting plate is fixedly connected to the outer side of the PVC plastic body, and the interior of the connecting plate is formed into a flame-retardant cavity.

[0012] Preferably, lime is disposed inside the flame retardant cavity, and the lime is provided in powder form.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model adds flame retardants and stirs them during the production and calendering process of the sheet material to achieve molecular recombination, and adds wear-resistant materials to the PVC plastic sheet. In the process of daily use, the plastic elastic part is connected to the elastic flame retardant layer, the composite flame retardant layer, the plastic elastic part and the flame retardant protective layer, and the surface is not wear-resistant. In the actual use process, the flame retardant ability is improved, the fire hazard is reduced, and it can play a good fire prevention and flame retardant effect.

[0015] 2. The utility model can make the plastic sheet material have the elongation at break, bending resistance, compression resistance and impact resistance by combining the glass fiber tape with the plastic elastic part in the composite flame retardant layer. In addition, the high temperature resistant material is added to further improve the high temperature resistance of the plastic, thereby enhancing the fire resistance and also improving the cutting resistance of the plastic sheet material. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the first wear-resistant layer of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the first flame retardant protective layer of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the PVC plastic body of the utility model.

[0020] In the figure: 1. PVC plastic body; 2. first elastic flame retardant layer; 3. first protrusion; 4. first composite flame retardant layer; 5. first adhesive; 6. first flame retardant protective layer; 7. first wear-resistant layer; 8. flame retardant board; 9. second wear-resistant layer; 10. second elastic flame retardant layer; 11. second adhesive; 12. second composite flame retardant layer; 13. second protrusion; 14. connecting plate; 15. flame retardant cavity; 16. lime; 17. glass fiber. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figures 1 to 4As shown, the utility model provides a high-temperature resistant and flame-retardant PVC plastic sheet, comprising a PVC plastic body 1, a first protrusion 3 is fixedly connected to the bottom end of the PVC plastic body 1, a first elastic flame-retardant layer 2 is arranged at the bottom end of the first protrusion 3, a slide groove is provided at the top end of the first elastic flame-retardant layer 2, the first protrusion 3 slides inside the slide groove at the top end of the first elastic flame-retardant layer 2, a first composite flame-retardant layer 4 is attached to the bottom end of the first elastic flame-retardant layer 2, a first adhesive 5 is provided at the bottom end of the first composite flame-retardant layer 4, a first flame retardant protective layer 6 is fixedly connected to the bottom end of the first adhesive 5, a first wear-resistant layer 7 is fixedly connected to the bottom end of the first flame retardant protective layer 6, a plurality of groups of circular grooves are provided at the bottom end of the first wear-resistant layer 7, the top end of the first wear-resistant layer 7 is arranged as a wear-resistant material, the material of the first wear-resistant layer 7 and the second wear-resistant layer 9 is ceramic polymer, and the wear resistance of the outer surfaces of the first elastic flame-retardant layer 2 and the second elastic flame-retardant layer 10 is increased by utilizing the advantage of high wear resistance of ceramic polymer.

[0023] Specifically, a flame retardant plate 8 is arranged on the outside of the PVC plastic body 1, and two groups of flame retardant plates 8 are arranged. Glass fibers 17 are arranged inside the first flame retardant protective layer 6, and several groups of glass fibers 17 are arranged. The glass fibers 17 are arranged inside the first flame retardant protective layer 6 to make the plastic sheet have better tensile resistance, bending resistance, compression resistance and impact resistance.

[0024] Furthermore, a second protrusion 13 is fixedly connected to the top of the PVC plastic body 1, a second composite flame-retardant layer 12 is arranged at the top of the second protrusion 13, a slide groove is provided at the bottom of the second composite flame-retardant layer 12, and the second protrusion 13 slides inside the slide groove of the second composite flame-retardant layer 12. The first protrusion 3 can make the various materials bonded more tightly on the first elastic flame-retardant layer 2 to prevent the materials from separating after long-term use.

[0025] Furthermore, a second adhesive 11 is provided on the top of the second composite flame-retardant layer 12 , and the second elastic flame-retardant layer 10 is bonded via the top of the second adhesive 11 .

[0026] It is worth noting that the second elastic flame retardant layer 10 is attached to the top of the second wear-resistant layer 9, and the top of the second wear-resistant layer 9 is provided with a plurality of groups of circular grooves to increase the friction with the ground. The second wear-resistant layer 9 is set to be a wear-resistant material.

[0027] It is worth noting that a connecting plate 14 is fixedly connected to the outer side of the PVC plastic body 1, and a flame retardant cavity 15 is formed inside the connecting plate 14. The connecting plate 14 is used to connect the two sides of the PVC plastic body 1 to prevent chain fire.

[0028] It is worth mentioning that lime 16 is arranged inside the flame retardant cavity 15, and the lime 16 is arranged in powder form, so as to achieve the effect of fire retardancy and air isolation.

[0029] Working principle:

[0030] First of all, the staff will use the first wear-resistant layer 7 and the second wear-resistant layer 9 as ceramic polymer in actual use. The high wear resistance of ceramic polymer is used to increase the wear resistance of the outer surface of the first elastic flame retardant layer 2 and the second elastic flame retardant layer 10. When the PVC plastic sheet is burned, the first composite flame retardant layer 4 can slow down the burning speed of the PVC plastic body 1, thereby enhancing the flame retardant performance of the PVC plastic sheet. The glass fiber 17 is respectively arranged inside the first flame retardant protective layer 6, which can make the PVC plastic body 1 have better tensile, bending, compression and impact resistance. In addition, the principle of the small thermal deformation coefficient of the flame retardant board 8 is used to reduce the influence of high-temperature combustion on the PVC plastic sheet, so that the PVC plastic sheet is not easily deformed when heated, so as to prevent affecting the normal use of the PVC plastic sheet. The first protrusion 3 in the first elastic flame retardant layer 2 can make the various materials bond more tightly to prevent the materials from detaching after long-term use. In addition, the first wear-resistant layer 7 is added to the bottom end of the PVC plastic body 1 to reduce the wear on the PVC plastic body 1 during long-term use.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high temperature resistant and flame retardant PVC plastic sheet, comprising a PVC plastic body (1), characterized in that: The bottom end of the PVC plastic body (1) is fixedly connected to a first protrusion (3), the bottom end of the first protrusion (3) is provided with a first elastic flame retardant layer (2), the top end of the first elastic flame retardant layer (2) is provided with a slide groove, the first protrusion (3) slides inside the slide groove at the top end of the first elastic flame retardant layer (2), the bottom end of the first elastic flame retardant layer (2) is bonded with a first composite flame retardant layer (4), the bottom end of the first composite flame retardant layer (4) is provided with a first adhesive (5), the bottom end of the first adhesive (5) is fixedly connected to a first flame retardant protective layer (6), the bottom end of the first flame retardant protective layer (6) is fixedly connected to a first wear-resistant layer (7), the bottom end of the first wear-resistant layer (7) is provided with a plurality of groups of circular grooves, and the top end of the first wear-resistant layer (7) is provided with a wear-resistant material.

2. The high temperature resistant and flame retardant PVC plastic sheet according to claim 1, characterized in that: The outer side of the PVC plastic body (1) is provided with a flame retardant plate (8), and the flame retardant plate (8) is provided in two groups. The interior of the first flame retardant protective layer (6) is provided with glass fibers (17), and the glass fibers (17) are provided in a plurality of groups.

3. The high temperature resistant and flame retardant PVC plastic sheet according to claim 2, characterized in that: A second protrusion (13) is fixedly connected to the top of the PVC plastic body (1), a second composite flame retardant layer (12) is arranged at the top of the second protrusion (13), a sliding groove is provided at the bottom of the second composite flame retardant layer (12), and the second protrusion (13) slides inside the sliding groove of the second composite flame retardant layer (12).

4. The high temperature resistant and flame retardant PVC plastic sheet according to claim 3, characterized in that: The second composite flame retardant layer (12) is fixedly connected to the top end thereof with a second adhesive (11), and the second elastic flame retardant layer (10) is adhered to the top end thereof with the second adhesive (11).

5. The high temperature resistant and flame retardant PVC plastic sheet according to claim 4, characterized in that: The top end of the second elastic flame-retardant layer (10) is fixedly connected to the second wear-resistant layer (9), the top end of the second wear-resistant layer (9) is provided with a plurality of groups of circular grooves, and the second wear-resistant layer (9) is configured as a wear-resistant material.

6. The high temperature resistant and flame retardant PVC plastic sheet according to claim 3, characterized in that: A connecting plate (14) is fixedly connected to the outer side of the PVC plastic body (1), and the interior of the connecting plate (14) is formed into a flame retardant cavity (15).

7. The high temperature resistant and flame retardant PVC plastic sheet according to claim 6, characterized in that: Lime (16) is arranged inside the flame retardant cavity (15), and the lime (16) is arranged in a powdery state.

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