Composite insulating fireproof PP (polypropylene) board

Abstract

The utility model relates to the technical field of PP boards, and discloses a composite insulation fireproof PP board which comprises a PP board body, an installation groove is formed in the PP board body, a sealing groove is formed in the surface of the side, close to the installation groove, of the PP board body, a reinforced inner core assembly is arranged in the installation groove, and the reinforced inner core assembly is arranged in the sealing groove. The reinforced inner core assembly comprises a first reinforcing plate, the outer wall of the first reinforcing plate is connected to the inner wall of the mounting groove in an attached mode, an insulating thin plate is fixedly connected to the surface of the first reinforcing plate, and a second reinforcing plate is fixedly connected to the side, away from the first reinforcing plate, of the insulating thin plate. According to the utility model, through the reinforced inner core assembly, the glass fiber grid and the insulating thin plate which are embedded in the PP plate main body, and the first reinforcing plate and the second reinforcing plate which contain the palygorskite filler are cooperatively reinforced, and maleic anhydride grafted PP is introduced between the reinforced inner core assembly and the PP plate main body, so that chemical bonding is formed; and the bending resistance and the insulating property of the PP plate main body are obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of PP sheet technology, and in particular to a composite insulating and fireproof PP sheet. Background Technology

[0002] PP sheets, or polypropylene sheets, are plastic sheets made from polypropylene resin as the main raw material through extrusion molding and other methods. Composite insulating and fireproof PP sheets have wide applications in many fields.

[0003] Composite insulating and fireproof PP board is a plastic sheet made of polypropylene resin with various functional additives, through processes such as extrusion, calendering, cooling, and cutting. This type of board improves the oxygen index flame retardant rating and inhibits the spread of flames by adding high-efficiency flame retardant masterbatch to the PP substrate.

[0004] The composite insulating and fireproof PP board mentioned above achieves insulation and fire resistance, but it relies solely on the flame retardant of the substrate. It is prone to melting and dripping at high temperatures and cannot meet the Class A fire resistance requirements. The single-layer PP substrate has insufficient impact resistance and is prone to cracking. When used outdoors, the insulation layer is easily aged due to ultraviolet rays or humid heat, which affects the protective performance of the PP board and makes it inconvenient to use. Therefore, a composite insulating and fireproof PP board is proposed to solve the above problems. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a composite insulating and fireproof PP sheet, which aims to solve the problems in the prior art that rely solely on the flame retardant of the substrate, which is prone to melting and dripping at high temperatures and cannot meet the Class A fire protection requirements; the single-layer PP substrate has insufficient impact resistance and is prone to cracking; and the insulation layer is easily aged due to ultraviolet rays or humid heat when used outdoors, affecting the protective performance of the PP sheet.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a composite insulating and fireproof PP sheet, comprising a PP sheet body, wherein the interior of the PP sheet body is provided with an installation groove, and the surface of the PP sheet body near the installation groove is provided with a sealing groove, and an reinforcing core component is provided inside the installation groove;

[0007] The reinforced core assembly includes a first reinforcing plate, the outer wall of which is attached to the inner wall of the mounting groove. An insulating sheet is fixedly connected to the surface of the first reinforcing plate. A second reinforcing plate is fixedly connected to the side of the insulating sheet away from the first reinforcing plate. A fiberglass mesh is fixedly connected to the side of the second reinforcing plate away from the insulating sheet. Honeycomb holes are formed on the surfaces of both the first and second reinforcing plates. A sealing plate is fixedly snapped onto the upper surface of the PP sheet body. A sealing protrusion is fixedly connected to the outer wall of the sealing plate. A flame-retardant composite surface layer is provided between the PP sheet body and the sealing plate. An interlocking structure is provided between the PP sheet body, the sealing plate, and the flame-retardant composite surface layer.

[0008] As a further description of the above technical solution: there are two insulating sheets, and the two insulating sheets are mirror images of each other along the central axis of the first reinforcing plate.

[0009] As a further description of the above technical solution: multiple rectangular arrays of honeycomb holes are arranged, and the interior of each of the multiple honeycomb holes is filled with palygorskite filler.

[0010] As a further description of the above technical solution: maleic anhydride-grafted PP is introduced between the reinforced inner core component and the PP sheet body to form a chemical bond.

[0011] As a further description of the above technical solution: there are two flame-retardant composite surface layers, which are mirror images of each other along the central axis of the PP sheet body. Each flame-retardant composite surface layer includes a ceramic fiber layer. One side of the ceramic fiber layer is fixedly connected to the surface of the PP sheet body and the sealing plate, and the other side of the ceramic fiber layer is fixedly connected to a polytetrafluoroethylene layer. The surface of the polytetrafluoroethylene layer is provided with a UV coating.

[0012] As a further description of the above technical solution: the interlocking structure includes positioning protrusions, interlocking grooves, positioning grooves and interlocking strips. The surface of the positioning protrusions is fixedly connected to the surface of the PP sheet body. There are two sets of positioning protrusions, and the two sets of positioning protrusions are mirror images of each other along the central axis of the PP sheet body.

[0013] As a further description of the above technical solution: the interlocking groove is formed on the outer surface of the sealing protrusion, the positioning groove is formed on the inner surface of the flame-retardant composite surface layer, and the surface of the interlocking protrusion is fixedly connected to the inner surface of the flame-retardant composite surface layer.

[0014] As a further description of the above technical solution: the inner wall of the engagement groove is adapted to the outer wall size of the engagement protrusion, and the inner wall of the positioning groove is adapted to the outer wall size of the positioning protrusion.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, by strengthening the inner core component, the PP sheet body is reinforced by embedding glass fiber mesh, insulating sheet, and first and second reinforcing plates containing palygorskite filler. Combined with the introduction of maleic anhydride grafted PP between the reinforced inner core component and the PP sheet body to form chemical bonds, the bending resistance and insulation performance of the PP sheet body are significantly improved.

[0017] 2. In this utility model, by using a flame-retardant composite surface layer and an interlocking structure, the flame-retardant composite surface layer with positioning grooves and interlocking protrusions is combined with the PP sheet body with positioning protrusions and the sealing plate with interlocking grooves, thereby improving the peel strength between the surface layer and the core layer of the overall sheet, ensuring that the flame-retardant composite surface layer is stably attached to the surface layer of the PP sheet body, thereby improving the flame-retardant and weather-resistant safety protection performance of the sheet. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a composite insulating and fireproof PP sheet proposed in this utility model.

[0019] Figure 2 A schematic diagram of the overall disassembled structure of a composite insulating and fireproof PP sheet proposed in this utility model. Figure 1 .

[0020] Figure 3 A schematic diagram of the overall disassembled structure of a composite insulating and fireproof PP sheet proposed in this utility model. Figure 2 .

[0021] Figure 4 This is a schematic diagram showing the disassembled structure of the reinforced inner core component of a composite insulating and fireproof PP sheet proposed in this utility model.

[0022] Legend:

[0023] 1. PP sheet body; 2. Mounting groove; 3. Sealing groove; 4. Reinforcing core assembly; 41. First reinforcing plate; 42. Insulating sheet; 43. Second reinforcing plate; 44. Fiberglass mesh; 45. Honeycomb holes; 46. Pallasic lime filler; 5. Sealing plate; 6. Sealing protrusion; 7. Flame-retardant composite surface layer; 71. Ceramic fiber layer; 72. Polytetrafluoroethylene layer; 73. UV coating; 8. Interlocking structure; 81. Positioning protrusion; 82. Interlocking groove; 83. Positioning groove; 84. Interlocking strip. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figure 1 , Figure 2 and Figure 4 This utility model provides an embodiment of a composite insulating and fireproof PP sheet, comprising a PP sheet body 1, an installation groove 2 inside the PP sheet body 1, a sealing groove 3 on the surface of the PP sheet body 1 near the installation groove 2, a reinforcing core assembly 4 inside the installation groove 2, and a chemical bond formed between the reinforcing core assembly 4 and the PP sheet body 1 by introducing maleic anhydride-grafted PP. The reinforcing core assembly 4 includes a first reinforcing plate 41, the outer wall of the first reinforcing plate 41 being attached to the inner wall of the installation groove 2, and an insulating thin plate 42 fixedly connected to the surface of the first reinforcing plate 41. Two insulating thin plates 42 are provided, and the two insulating thin plates 42 are mirror images of each other along the central axis of the first reinforcing plate 41. A second reinforcing plate 43 is fixedly connected to the side of the insulating thin plate 42 away from the first reinforcing plate 41, and a glass fiber mesh is fixedly connected to the side of the second reinforcing plate 43 away from the insulating thin plate 42. 44. The surfaces of the first reinforcing plate 41 and the second reinforcing plate 43 are provided with honeycomb holes 45. Multiple honeycomb holes 45 are arranged in a rectangular array, and the interior of multiple honeycomb holes 45 is filled with palygorskite filler 46. The surface of the palygorskite filler and glass fiber is modified to introduce functional groups that can undergo chemical reactions. Then, the two are connected through chemical reactions to form a more stable composite structure. The upper surface of the PP sheet body 1 is fixedly snapped with a sealing plate 5. The outer wall of the sealing plate 5 is fixedly connected with a sealing protrusion 6. By strengthening the inner core component 4, the glass fiber mesh 44 and the insulating thin plate 42 embedded in the PP sheet body 1 are synergistically reinforced with the first reinforcing plate 41 and the second reinforcing plate 43 with palygorskite filler 46. Combined with the introduction of maleic anhydride grafted PP between the reinforcing inner core component 4 and the PP sheet body 1 to form chemical bonds, the PP sheet body 1 has significantly improved bending resistance and insulation performance.

[0026] Reference Figures 1-3A flame-retardant composite surface layer 7 is provided between the surfaces of the PP sheet body 1 and the sealing plate 5. Two flame-retardant composite surface layers 7 are provided, mirror-imagely arranged along the central axis of the PP sheet body 1. Each flame-retardant composite surface layer 7 includes a ceramic fiber layer 71. One side of the ceramic fiber layer 71 is fixedly connected to the surface of the PP sheet body 1 and the sealing plate 5, and the other side is fixedly connected to a polytetrafluoroethylene (PTFE) layer 72. The surface of the PTFE layer 72 is coated with a UV coating 73. An interlocking structure 8 is provided between the PP sheet body 1, the sealing plate 5, and the flame-retardant composite surface layer 7. The interlocking structure 8 includes positioning protrusions 81, interlocking grooves 82 and 83, and interlocking strips 84. The surface of the positioning protrusions 81 is fixedly connected to the surface of the PP sheet body 1. Two sets of positioning protrusions 81 are provided, and the two sets of positioning protrusions 81 are mirror-imagely arranged along the central axis of the PP sheet body 1. The P-sheet body 1 is mirror-image of the central axis. The interlocking groove 82 is formed on the outer surface of the sealing protrusion 6, and the positioning groove 83 is formed on the inner surface of the flame-retardant composite surface layer 7. The surface of the interlocking protrusion 84 is fixedly connected to the inner surface of the flame-retardant composite surface layer 7. The inner wall of the interlocking groove 82 is adapted to the outer wall size of the interlocking protrusion 84, and the inner wall of the positioning groove 83 is adapted to the outer wall size of the positioning protrusion 81. Through the flame-retardant composite surface layer 7 and the interlocking structure 8, the flame-retardant composite surface layer 7 with positioning groove 83 and interlocking protrusion 84 is combined with the PP sheet body 1 with positioning protrusion 81 and the sealing plate 5 with interlocking groove 82, so that the interlayer peel strength between the surface layer and the core layer of the whole sheet is improved, and the flame-retardant composite surface layer 7 is stably bonded to the surface layer of the PP sheet body 1, so as to improve the safety protection performance of the sheet body in terms of flame retardancy and weather resistance.

[0027] Working principle: During use, the PP sheet body 1 is embedded with a glass fiber mesh 44, an insulating sheet 42, and a first reinforcing plate 41 and a second reinforcing plate 43 containing palygorskite filler 46. These components work together to reinforce the sheet. Through maleic anhydride grafting of PP, a chemical bond is formed between the reinforcing core component 4 and the PP sheet body 1, which significantly improves the bending resistance and insulation performance of the PP sheet. The flame-retardant composite surface layer 7 has a positioning groove 83 and an interlocking protrusion 84, which cooperate with the positioning protrusion 81 on the PP sheet body 1 and the interlocking groove 82 on the sealing plate 5 to improve the interlayer peel strength between the overall sheet surface layer and the core layer. This allows the flame-retardant composite surface layer 7 to be stably bonded to the surface of the PP sheet body 1, thereby improving the flame retardancy and weather resistance of the sheet and enhancing its safety protection performance.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite insulating and fireproof PP sheet, comprising a PP sheet body (1), characterized in that: The PP sheet body (1) has an internal mounting groove (2), and the surface of the PP sheet body (1) near the mounting groove (2) has a sealing groove (3). The mounting groove (2) has an internal reinforcing core assembly (4). The internal reinforcing core assembly (4) includes a first reinforcing plate (41), the outer wall of the first reinforcing plate (41) is attached to the inner wall of the mounting groove (2), an insulating sheet (42) is fixedly connected to the surface of the first reinforcing plate (41), and a second reinforcing plate (43) is fixedly connected to the side of the insulating sheet (42) away from the first reinforcing plate (41). The second reinforcing plate (43) is fixedly connected to a glass fiber mesh (44) on the side away from the insulating sheet (42). The surfaces of the first reinforcing plate (41) and the second reinforcing plate (43) are provided with honeycomb holes (45). The upper surface of the PP sheet body (1) is fixedly snapped with a sealing plate (5). The outer wall of the sealing plate (5) is fixedly connected with a sealing protrusion (6). A flame-retardant composite surface layer (7) is provided between the surfaces of the PP sheet body (1) and the sealing plate (5). An interlocking structure (8) is provided between the PP sheet body (1), the sealing plate (5) and the flame-retardant composite surface layer (7).

2. The composite insulating and fireproof PP sheet according to claim 1, characterized in that: There are two insulating plates (42), and the two insulating plates (42) are mirror images of the central axis of the first reinforcing plate (41).

3. The composite insulating and fireproof PP sheet according to claim 1, characterized in that: The honeycomb holes (45) are arranged in a rectangular array, and the honeycomb holes (45) are filled with palygorskite filler (46).

4. The composite insulating and fireproof PP sheet according to claim 1, characterized in that: The reinforced core component (4) and the PP sheet body (1) are chemically bonded by introducing maleic anhydride-grafted PP.

5. A composite insulating and fireproof PP sheet according to claim 1, characterized in that: Two flame-retardant composite surface layers (7) are provided. The two flame-retardant composite surface layers (7) are mirrored along the central axis of the PP sheet body (1). The flame-retardant composite surface layer (7) includes a ceramic fiber layer (71). One side of the ceramic fiber layer (71) is fixedly connected to the surface of the PP sheet body (1) and the sealing plate (5). The other side of the ceramic fiber layer (71) is fixedly connected to a polytetrafluoroethylene layer (72). The surface of the polytetrafluoroethylene layer (72) is provided with a UV coating (73).

6. The composite insulating and fireproof PP sheet according to claim 1, characterized in that: The interlocking structure (8) includes a positioning protrusion (81), an interlocking groove (82), a positioning groove (83), and an interlocking strip (84). The surface of the positioning protrusion (81) is fixedly connected to the surface of the PP sheet body (1). There are two sets of positioning protrusions (81), and the two sets of positioning protrusions (81) are mirrored along the central axis of the PP sheet body (1).

7. A composite insulating and fireproof PP sheet according to claim 6, characterized in that: The interlocking groove (82) is formed on the outer surface of the sealing protrusion (6), the positioning groove (83) is formed on the inner surface of the flame-retardant composite surface layer (7), and the surface of the interlocking protrusion (84) is fixedly connected to the inner surface of the flame-retardant composite surface layer (7).

8. A composite insulating and fireproof PP sheet according to claim 7, characterized in that: The inner wall of the engagement groove (82) is adapted to the outer wall size of the engagement protrusion (84), and the inner wall of the positioning groove (83) is adapted to the outer wall size of the positioning protrusion (81).

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