Fireproof acrylic plate and manufacturing method thereof

Abstract

The invention aims to provide a fireproof acrylic plate and a manufacturing method thereof, the fireproof acrylic plate comprises a composite acrylic plate and a flame-retardant component, a central groove and two side grooves are formed in the composite acrylic plate, the two side grooves are respectively located at two sides of the central groove, the top ends of the central groove and the two side grooves are mutually communicated, the bottom ends of the central groove and the two side grooves are mutually independent, and the flame-retardant component is arranged in the central groove. The flame-retardant assembly comprises a flame-retardant seat, a hot melting ball, a mixed material release part and a sprayed material release part, a pressure relief pipe and a sprayed material pipe are arranged on the flame-retardant seat, a pressure cavity, a first material cavity and a second material cavity are formed in the flame-retardant seat, the pressure cavity is communicated with the pressure relief pipe, the second material cavity and the sprayed material pipe are both communicated with the first material cavity, the flame-retardant seat is inserted into the bottom end of the composite acrylic plate, and the hot melting ball is arranged on the flame-retardant seat. The pressure relief pipe is communicated with the side groove, the material spraying pipe is communicated with the center groove, the hot melting ball is arranged in the pressure relief pipe, the mixed material releasing part and the material spraying releasing part are both arranged in the pressure cavity, the mixed material releasing part is used for sealing the second material cavity and the first material cavity, and the material spraying releasing part is used for sealing the material spraying pipe and the first material cavity.

Description

Technical Field

[0001] The invention relates to the technical field of acrylic plates, and in particular to a fireproof acrylic plate and a manufacturing method thereof. Background Art

[0002] Acrylic sheet, also known as organic glass, is a transparent organic material made of methyl methacrylate (MMA). Acrylic sheet is widely used in the construction industry, advertising industry, transportation industry and other industries because of its high transparency and glossiness, good weather resistance and chemical stability, easy processing and molding, light weight and high impact strength.

[0003] In order to improve the fire resistance of acrylic, there are mainly three existing methods. The first is to add flame retardants to improve the fire resistance of acrylic boards. The second is to improve the fire resistance of acrylic boards by coating the surface with a flame retardant layer. The third is to improve the fire resistance of acrylic boards by changing the structure of the acrylic boards and adding flame retardant structures. For example, a Chinese patent document with publication number CN116728923A discloses a high-strength flame retardant acrylic board, which includes a pair of acrylic board bodies, a strip gap is provided between the pair of acrylic board bodies, a pair of side reinforcing plates are connected between the pair of acrylic board bodies, and the side reinforcing plates include a base plate, a fixed connection on the base plate A leak plate is connected, a plurality of leak holes are opened on the leak plate, and a hot-melt film is laid on the outer wall of the leak plate; a reinforced seal is arranged between a pair of acrylic plate bodies, a sealing strip is connected between the reinforced seal and the acrylic plate body, the sealing strip and the reinforced seal are bonded by a heat-conducting flame-retardant sealant, and the heat-conducting flame-retardant sealant extends into the sealing strip and the reinforced seal; the reinforced seal includes a pair of card strips, a plurality of sealing balls are clamped between the pair of card strips, a plurality of hemispherical grooves matching the sealing balls are opened on the card strips, two through holes communicating with the hemispherical grooves are opened on the card strips, and the two through holes intersect; flame-retardant particles are filled in the side reinforcing plate or the sealing ball; the flame-retardant particles include epp flame-retardant masterbatch and quartz sand. In this way, when the entire board is in an overly high temperature environment, an effective flame retardant layer is quickly formed in the composite acrylic board to achieve flame retardancy of the board. This makes it easy to ensure the flame retardant and fireproof effect of the composite board when using acrylic boards with low flame retardant additions to form composite boards, and the equipment for strengthening the seal can easily further improve the overall strength of the composite board.

[0004] However, the existing flame-retardant acrylic sheet has the following technical defects: flame-retardant particles are filled in the strip-shaped gaps to form a flame-retardant layer inside the main body of the acrylic sheet, but the flame-retardant properties of the outer side of the main body of the acrylic sheet are not changed, which means that the outer wall of the main body of the acrylic sheet will still be burned by high temperature, which will cause the EPP flame-retardant masterbatch and quartz sand in the strip-shaped gaps to flow out, thus causing the formed flame-retardant layer to disappear, thereby losing the flame-retardant function. Therefore, in order to solve the purpose of achieving flame retardancy of the acrylic sheet by changing the structure, the fire-retardant acrylic sheet and its manufacturing method of the present application are proposed. Summary of the invention

[0005] The object of the present invention is to overcome the deficiencies in the prior art and to provide a fire-resistant acrylic sheet having fire-resistant properties by changing the structure and a method for manufacturing the same.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] A fire-resistant acrylic board, comprising:

[0008] A composite acrylic plate, wherein a central groove and two side grooves are formed in the composite acrylic plate, wherein the two side grooves are respectively located on both sides of the central groove, wherein the top ends of the central groove and the two side grooves are interconnected, and the bottom ends of the central groove and the two side grooves are independent of each other; and

[0009] A flame retardant assembly, the flame retardant assembly includes a flame retardant seat, a hot melt ball, a mixing release piece and a spray release piece, the flame retardant seat is provided with a pressure relief pipe and a spray pipe, the flame retardant seat is provided with a pressure chamber, a first material chamber and a second material chamber, the first material chamber and the second material chamber are both used to contain flame retardants, the pressure chamber is connected to the pressure relief pipe, the second material chamber and the spray pipe are both connected to the first material chamber, the flame retardant seat is plugged into the bottom end of the composite acrylic plate so that the pressure relief pipe is connected to the two side grooves, and the spray pipe is connected to the central groove, the hot melt ball is arranged in the pressure relief pipe to close the pressure relief pipe and the side groove, the mixing release piece and the spray release piece are both arranged in the pressure chamber, the mixing release piece also extends between the second material chamber and the first material chamber to close the second material chamber and the first material chamber, and the spray release piece also extends between the spray pipe and the first material chamber to close the spray pipe and the first material chamber.

[0010] Optionally, the composite acrylic panel includes a bottom panel, a top panel, two side panels and four panel bodies, the four panel bodies are stacked at intervals, the bottom ends of the four panel bodies are connected to the bottom panel, the top ends of the four panel bodies are connected to the top panel, and the two sides of the four panel bodies are respectively connected to the two side panels, so that the central groove and the two side grooves are formed between the four panel bodies.

[0011] Optionally, a plurality of spaced-apart air-avoiding grooves are provided at the top ends of the two inner plates, so that the central groove and the side grooves are connected through the air-avoiding grooves.

[0012] Optionally, a mounting groove is formed on a side surface of the bottom plate away from the plate body, and the flame retardant seat is inserted into the mounting groove.

[0013] Optionally, a plurality of slots are provided on the inner bottom wall of the installation groove, and a plurality of the flame-retardant seats are provided, and each of the flame-retardant seats is plugged into each of the slots one by one.

[0014] Optionally, a first through hole and a second through hole are further provided on the inner bottom wall of the slot, the first through hole is connected to the central slot, and the second through hole is connected to the side slot, and when the flame retardant seat is inserted into the slot, the spray pipe is inserted into the first through hole, and the pressure relief pipe is inserted into the second through hole.

[0015] Optionally, two second through holes are provided, and the two second through holes are respectively connected to the two side grooves, and two pressure relief pipes are provided, and the two pressure relief pipes are used to be respectively inserted into the two second through holes.

[0016] Optionally, the mixing release member includes a sealing pin, a spring and a sealing ring, the sealing pin is inserted into the flame retardant seat so that one end of the sealing pin is located in the pressure chamber, and the other end of the sealing pin extends between the second material chamber and the first material chamber, an air outlet is opened on the axis of the sealing pin, and a conducting groove is opened on the outer wall of the sealing pin, the spring is sleeved on the outer wall of the sealing pin, and the spring is respectively abutted against the sealing pin and the inner wall of the pressure chamber, the sealing ring is sleeved on one end of the sealing pin located in the pressure chamber, when the air pressure in the pressure chamber increases, the air pressure will push the sealing pin, so that the sealing ring closes the air outlet and the pressure chamber, and the conducting groove is not connected with the second material chamber and the first material chamber, when the air pressure in the pressure chamber decreases, the spring pushes the sealing pin, so that the air outlet is connected with the pressure chamber, and the conducting groove is respectively connected with the second material chamber and the first material chamber.

[0017] Optionally, the structure of the material spraying release member is equivalent to that of the material mixing release member, and the sealing pin in the material spraying drive member is used to extend between the material spraying pipe and the first material chamber.

[0018] A method for manufacturing a fire-resistant acrylic sheet comprises the following steps:

[0019] Step S10, obtaining a composite acrylic plate, wherein the composite acrylic plate is provided with a central groove and two side grooves, the two side grooves are respectively located on both sides of the central groove, the top ends of the central groove and the two side grooves are connected to each other, and the bottom ends of the central groove and the two side grooves are independent of each other;

[0020] Step S20, obtaining a flame retardant component, wherein the flame retardant component includes a flame retardant seat, a hot melt ball, a mixing release piece and a spraying release piece, the flame retardant seat is provided with a pressure relief pipe and a spraying pipe, the flame retardant seat is provided with a pressure chamber, a first material chamber and a second material chamber, the pressure chamber is communicated with the pressure relief pipe, the second material chamber and the spraying pipe are both communicated with the first material chamber, the hot melt ball is arranged in the pressure relief pipe to close the pressure relief pipe, the mixing release piece and the spraying release piece are both arranged in the pressure chamber, the mixing release piece also extends between the second material chamber and the first material chamber, and the spraying release piece also extends between the spraying pipe and the first material chamber;

[0021] Step S30, filling the pressure chamber with nitrogen gas at 1.2 MPa to 1.5 MPa, so that the mixing release member seals the second material chamber and the first material chamber, and the spraying release member seals the spraying pipe and the first material chamber;

[0022] Step S40, injecting flame retardant into the first material cavity and the second material cavity respectively;

[0023] Step S50, inserting the flame retardant seat into the bottom end of the composite acrylic plate, so that the pressure relief pipe is connected to the two side grooves, and the spray pipe is connected to the central groove, to obtain a fire-resistant acrylic plate.

[0024] Compared with the prior art, the present invention has at least the following advantages:

[0025] When the fire-resistant acrylic sheet faces a fire source, the heat will make its outer wall surface more susceptible to heat deformation or even burning. Therefore, the temperature of the two side grooves of the composite acrylic sheet will increase first. As the temperature of the side grooves increases, the hot melt ball in the pressure relief pipe will melt due to the heat, causing the high-pressure gas in the pressure chamber to be released from the pressure relief pipe to the outside. As the air pressure in the pressure chamber decreases, the air pressure can no longer act on the mixing release member and the spray release member, so that the mixing release member connects the second material chamber with the first material chamber, so that the aluminum sulfate solution and the sodium bicarbonate solution react in the first material chamber to produce a large amount of foam, and then the spray release member connects the spray pipe and the first material chamber, so that the foam spreads from the bottom end to the central groove along the spray pipe, and finally spreads from the top of the central groove to the side grooves on both sides, and covers the inner walls of the side grooves. In this way, compared with the existing fire-resistant structure, the fire-resistant acrylic sheet of the present application can coat the fire-resistant material on the surface of the composite acrylic sheet, thereby effectively achieving the purpose of fire retardancy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a schematic structural diagram of a fire-resistant acrylic plate according to one embodiment of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of the partial structure of the fire-resistant acrylic plate shown;

[0029] Figure 3 It is a schematic structural diagram of a flame retardant assembly according to one embodiment of the present invention;

[0030] Figure 4 Schematic diagram of the cross-sectional structure of a composite acrylic plate according to one embodiment of the present invention;

[0031] Figure 5 for Figure 1 A schematic diagram of a partial cross-sectional structure of a fire-resistant acrylic plate shown;

[0032] Figure 6 for Figure 1 A schematic diagram of a partial cross-sectional structure of a fire-retardant acrylic plate at another angle shown;

[0033] Figure 7 for Figure 3 A schematic cross-sectional structure diagram of a flame retardant assembly shown;

[0034] Figure 8 for Figure 4 A schematic diagram of the partial structure of the composite acrylic plate shown;

[0035] Fig. 9 for Figure 3 A schematic cross-sectional structure diagram of the flame retardant assembly at another angle;

[0036] Fig.10 for Figure 3 A schematic cross-sectional structure diagram of the flame retardant assembly at another angle;

[0037] Fig.11 is a schematic cross-sectional structure diagram of a mixed material release member according to one embodiment of the present invention;

[0038] Fig.12 is a schematic cross-sectional structure diagram of a spray material release member according to an embodiment of the present invention;

[0039] Fig.13 This is a flow chart of a method for producing a fire-retardant acrylic plate according to one embodiment of the present invention.

[0040] Description of reference numerals:

[0041] 10. Fireproof acrylic sheet; 100. Composite acrylic sheet; 200. Flame retardant component; 141. Center groove; 142. Side groove; 210. Flame retardant seat; 220. Hot melt ball; 230. Mixing release piece; 240. Spraying release piece; 250. Pressure relief pipe; 260. Spraying pipe; 211. Pressure chamber; 212. First chamber; 213. Second chamber; 110. Bottom plate; 120. Top plate; 130. Side plate; 140. Plate body; 143. Air avoidance groove; 111. Mounting groove; 112. Slot; 113. First through hole; 114. Second through hole; 231. Sealing pin; 232. Spring; 233. Sealing ring; 2311. Air outlet; 2312. Conducting groove. DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0043] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0046] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings show preferred embodiments of the present invention.

[0047] like Figures 1 to 7 As shown, a fire-retardant acrylic plate 10 includes a composite acrylic plate 100 and a flame retardant component 200. The composite acrylic plate 100 is provided with a central groove 141 and two side grooves 142. The two side grooves 142 are respectively located on both sides of the central groove 141. The top ends of the central groove 141 and the two side grooves 142 are connected to each other, and the bottom ends of the central groove 141 and the two side grooves 142 are independent of each other. The flame retardant component 200 includes a flame retardant seat 210, a hot melt ball 220, a mixing release member 230 and a spray release member 240. The flame retardant seat 210 is provided with a pressure relief pipe 250 and a spray pipe 260. The flame retardant seat 210 is provided with a pressure chamber 211, a first material chamber 212 and a second material chamber 213. The first material chamber 212 and the second material chamber 213 are both used to accommodate flame retardants. The pressure chamber 211 is connected with the pressure relief pipe 250, the second material chamber 213 and the spray pipe 260 are both connected with the first material chamber 212, the flame retardant seat 210 is inserted into the bottom end of the composite acrylic plate 100, so that the pressure relief pipe 250 is connected with the two side grooves 142, and the spray pipe 260 is connected with the central groove 141, the hot melt ball 220 is arranged in the pressure relief pipe 250 to close the pressure relief pipe 250 and the side groove 142, the mixing release piece 230 and the spray release piece 240 are both arranged in the pressure chamber 211, the mixing release piece 230 also extends between the second material chamber 213 and the first material chamber 212 to close the second material chamber 213 and the first material chamber 212, and the spray release piece 240 also extends between the spray pipe 260 and the first material chamber 212 to close the spray pipe 260 and the first material chamber 212.

[0048] It should be noted that the two side grooves 142 in the composite acrylic plate 100 are respectively located on both sides of the central groove 141, and the tops of the central groove 141 and the two side grooves 142 are connected to each other, and the bottoms are independent of each other. Further, a pressure chamber 211, a first material chamber 212, and a second material chamber 213 are provided in the flame retardant seat 210, wherein the pressure chamber 211 is connected to the pressure relief pipe 250. The second material chamber 213 and the spray pipe 260 are both connected to the first material chamber 212. When the flame retardant seat 210 is plugged and installed at the bottom end of the composite acrylic plate 100, the pressure relief pipe 250 is connected to the two side grooves 142, and the spray pipe 260 is connected to the central groove 141. The pressure relief pipe 250 is installed with a hot melt ball 220, and the hot melt ball 220 is used to block the pressure relief pipe 250, that is, the side groove 142 and the pressure chamber 211 are not connected. In one embodiment, the hot melt ball 220 is made of paraffin, which will melt when heated. Further, one end of the mixing release member 230 is located in the pressure chamber 211, and the other end extends between the second chamber 213 and the first chamber 212. The mixing release member 230 is used to close or open the passage between the second chamber 213 and the first chamber 212. It should be noted that the second chamber 213 and the first chamber 212 are both used to contain flame retardants. For example, aluminum sulfate solution can be contained in the second chamber 213, and sodium bicarbonate solution can be contained in the first chamber 212. In this way, the connection or closing of the second chamber 213 and the first chamber 212 is controlled by the mixing release member 230. When closed, the flame retardants are independent of each other and no chemical reaction occurs. When connected, the aluminum sulfate solution in the second chamber 213 will flow into the sodium bicarbonate solution in the first chamber 212 to react chemically, thereby generating a large amount of foam. Furthermore, one end of the spray release member 240 is located in the pressure chamber 211, and the other end of the spray release member 240 extends between the spray pipe 260 and the first material chamber 212. The spray release member 240 is used to control the connection or closure between the spray pipe 260 and the first material chamber 212. When closed, the foam in the first material chamber 212 cannot be sprayed out from the spray pipe 260. When connected, the foam in the first material chamber 212 will be sprayed out along the spray pipe 260, thereby entering the central groove 141 from the bottom of the central groove 141. Since the central groove 141 and the side groove 142 are connected at the top, the foam will spread from the bottom of the central groove 141 to the top, and spread from the position where the top of the central groove 141 and the side groove 142 are connected to the two side grooves 142, so that the foam covers the side wall of the side groove 142 close to the central groove 141, so that the composite acrylic plate 100 has good isolation and flame retardant properties.It should be noted that the pressure chamber 211 is used to inject high-pressure gas. The high-pressure gas causes the mixing release member 230 to close the passage between the second material chamber 213 and the first material chamber 212, and at the same time causes the spray release member 240 to close the passage between the spray pipe 260 and the first material chamber 212. When the fire-resistant acrylic sheet 10 is facing a fire source, the heat causes its outer wall surface to be more easily deformed or even burned. Therefore, the temperature of the two side grooves 142 of the composite acrylic sheet 100 will first increase. As the temperature of the side grooves 142 increases, the hot melt ball 220 in the pressure relief pipe 250 is heated and melted, causing the high-pressure gas in the pressure chamber 211 to be released from the pressure relief pipe 250 to the outside. As the air pressure in the pressure chamber 211 decreases, the air pressure can no longer continue to The mixing release member 230 and the spray release member 240 work so that the mixing release member 230 connects the second material chamber 213 with the first material chamber 212, so that the aluminum sulfate solution and the sodium bicarbonate solution react in the first material chamber 212 to produce a large amount of foam, and then the spray release member 240 connects the spray pipe 260 with the first material chamber 212, so that the foam spreads from the bottom end to the central groove 141 along the spray pipe 260, and finally spreads from the top of the central groove 141 to the side grooves 142 on both sides, and covers the inner wall of the side grooves 142. In this way, compared with the existing fireproof structure, the fireproof acrylic board 10 of the present application can coat the fireproof material on the surface of the composite acrylic board 100, and effectively achieve the purpose of fire retardancy.

[0049] like Figure 4 and Figure 8 As shown, in one embodiment, the composite acrylic plate 100 includes a bottom plate 110, a top plate 120, two side plates 130 and four plate bodies 140. The four plate bodies 140 are stacked at intervals, and the bottom ends of the four plate bodies 140 are connected to the bottom plate 110, the top ends of the four plate bodies 140 are connected to the top plate 120, and the two sides of the four plate bodies 140 are respectively connected to the two side plates 130, so that a central groove 141 and two side grooves 142 are formed between the four plate bodies 140.

[0050] It should be noted that the four plates 140 are spaced apart, so that three gaps are formed between the four plates 140, wherein the gap located at the center is the center groove 141, and the gaps located on both sides of the center groove 141 are the side grooves 142. Further, the four plates 140 are fixedly connected to form a composite acrylic plate 100 through the bottom plate 110, the top plate 120, and the two side plates 130. In one embodiment, the bottom plate 110, the top plate 120, the two side plates 130, and the four plates 140 are bonded and fixed by glue.

[0051] like Figure 8 As shown, in one embodiment, the top ends of the two inner plates 140 are each provided with a plurality of spaced-apart avoidance grooves 143 , so that the central groove 141 and the side grooves 142 are connected via the avoidance grooves 143 .

[0052] It should be noted that the two plates 140 located in the middle are used to form a central groove 141 together, and the central groove 141 needs to be connected to the side groove 142. At the same time, in order to ensure that the top of the plate 140 located in the middle can be reliably connected and fixed to the top plate 120, spaced-apart grooves 143 are provided on the top of the two plates 140 in the middle, so that the foam can smoothly spread from the central groove 141 through the grooves 143 to the side grooves 142, so that the foam can reliably cover the inner side walls of the central groove 141 and the side grooves 142.

[0053] like Figure 2 As shown, in one embodiment, a mounting groove 111 is formed on a side surface of the bottom plate 110 away from the plate body 140 , and the flame retardant seat 210 is inserted into the mounting groove 111 .

[0054] It should be noted that, in order to facilitate the installation of the flame retardant seat 210 in the bottom plate 110 , a mounting groove 111 is provided on the bottom side of the bottom plate 110 so that the flame retardant seat 210 can be plugged into the mounting groove 111 .

[0055] like Figure 2 As shown, in one embodiment, a plurality of slots 112 are further provided on the inner bottom wall of the mounting groove 111 , and a plurality of flame retardant seats 210 are provided, and each flame retardant seat 210 is plugged into each slot 112 in a one-to-one correspondence.

[0056] It should be noted that by providing slots 112 spaced apart in the installation groove 111 , the flame retardant seat 210 can be installed by inserting it into the slots 112 , so that the flame retardant seat 210 can be quickly and conveniently installed in the base plate 110 .

[0057] like Figure 2 As shown, in one embodiment, a first through hole 113 and a second through hole 114 are further provided on the inner bottom wall of the slot 112, the first through hole 113 is connected to the central groove 141, and the second through hole 114 is connected to the side groove 142. When the flame retardant seat 210 is inserted into the slot 112, the spray pipe 260 is inserted into the first through hole 113, and the pressure relief pipe 250 is inserted into the second through hole 114.

[0058] It should be noted that, by opening the first through hole 113 and the second through hole 114 on the inner bottom wall of the slot 112, wherein the first through hole 113 is connected to the central groove 141, and the second through hole 114 is connected to the side groove 142, the spray pipe 260 can be inserted into the first through hole 113 in an adaptive manner, and the pressure relief pipe 250 can be inserted into the second through hole 114 in an adaptive manner, so that the flame retardant seat 210 can be quickly and conveniently plugged and fixed in the slot 112. In one embodiment, an O-ring is provided in both the first through hole 113 and the second through hole 114, and the O-ring is made of silicone, so that the gap between the spray pipe 260 and the first through hole 113, or the gap between the pressure relief pipe 250 and the second through hole 114 can be eliminated by using the O-ring.

[0059] like Figure 5 and Figure 6 As shown, in one embodiment, two second through holes 114 are provided, the two second through holes 114 are respectively connected to the two side grooves 142 , and two pressure relief pipes 250 are provided, the two pressure relief pipes 250 are used to be respectively inserted into the two second through holes 114 .

[0060] It should be noted that in order to avoid the limitation of the fireproof acrylic sheet 10 having the installation direction, that is, to enable it to be installed in any direction, two second through holes 114 and two pressure relief pipes 250 are provided. In this way, no matter which side of the composite acrylic sheet 100 faces the fire source, when the board body 140 on the side facing the fire source is heated, deformed or even burned, the hot melt ball 220 in the pressure relief pipe 250 connected to the side groove 142 of the board body 140 on that side can be melted in time, thereby releasing the air pressure in the pressure chamber 211, so that the foam can be released. In this way, the fireproof and flame-retardant performance of the fireproof acrylic sheet 10 can be effectively improved.

[0061] like Figures 9 to 12As shown, in one embodiment, the mixed material release member 230 includes a sealing pin 231, a spring 232 and a sealing ring 233. The sealing pin 231 is inserted into the flame retardant seat 210 so that one end of the sealing pin 231 is located in the pressure chamber 211, and the other end of the sealing pin 231 extends between the second material chamber 213 and the first material chamber 212. An air outlet hole 2311 is provided on the axis of the sealing pin 231, and a conducting groove 2312 is provided on the outer wall of the sealing pin 231. The spring 232 is sleeved on the outer wall of the sealing pin 231, and the spring 232 is respectively connected to the sealing pin 231 and the pressure chamber 211. The inner walls are in contact with each other, and the sealing ring 233 is sleeved on one end of the sealing pin 231 located in the pressure chamber 211. When the air pressure in the pressure chamber 211 increases, the air pressure will push the sealing pin 231, so that the sealing ring 233 closes the air outlet 2311 and the pressure chamber 211, and makes the conducting groove 2312 not connected with the second material chamber 213 and the first material chamber 212. When the air pressure in the pressure chamber 211 decreases, the spring 232 pushes the sealing pin 231, so that the air outlet 2311 is connected with the pressure chamber 211, and makes the conducting groove 2312 connected with the second material chamber 213 and the first material chamber 212 respectively.

[0062] It should be noted that a through hole is provided in the flame retardant seat 210, and the through hole extends from the pressure chamber 211 to the position between the second material chamber 213 and the first material chamber 212, and the sealing pin 231 passes through the through hole. The sealing ring 233 is sleeved on the end of the sealing pin 231 located in the pressure chamber 211, and the spring 232 is sleeved on the sealing pin 231, and the spring 232 abuts against the inner side wall of the sealing pin 231 and the pressure chamber 211 respectively. In this way, under the elastic thrust of the spring 232, the sealing pin 231 drives the sealing ring 233 away from the through hole, so that the air outlet 2311 on the sealing pin 231 is connected with the pressure chamber 211, wherein the air outlet 2311 extends to the end of the sealing pin 231 away from the sealing ring 233. In this way, when high-pressure gas is injected into the pressure chamber 211, the thrust of the compression spring 232 is applied to the sealing pin 231, so that the sealing ring 233 seals the through hole, so that the air outlet 2311 and the pressure chamber 211 are closed, and the sealing ring 233 is kept in the state of sealing the pressure chamber 211. In this closed state, the conducting groove 2312 of the sealing pin 231 is not connected with the second material chamber 213 and the first material chamber 212, so that the second material chamber 213 does not contact the flame retardant in the first material chamber 212. When the hot melt ball 220 melts and the high-pressure gas in the pressure chamber 211 is released, the conducting groove 2312 can be connected with the second material chamber 213 and the first material chamber 212 under the elastic thrust of the spring 232, so that the flame retardant contacts to generate a large amount of foam. It should be noted that by opening an air outlet hole 2311 at the axis of the sealing pin 231, the pressure chamber 211 is connected to the outside through the air outlet hole 2311, while the pressure chamber 211 and the second material chamber 213 and the first material chamber 212 are not connected. In this way, the impact between the pressure chamber 211 and the second material chamber 213 and the first material chamber 212 can be avoided.

[0063] like Fig.11 As shown, in one embodiment, an annular groove is formed on one end of the sealing pin 231 close to the pressure chamber 211 , and the sealing ring 233 is sleeved in the annular groove, and the outer diameter of the sealing ring 233 gradually decreases in the direction away from the pressure chamber 211 .

[0064] In this way, under the pressure of the high-pressure gas in the pressure chamber 211 , the oblique outer edge of the sealing ring 233 can reliably seal the pressure chamber 211 and the gas outlet 2311 , so that the pressure chamber 211 can stably and reliably form a closed chamber structure.

[0065] like Fig.11 and Fig.12 As shown, in one embodiment, the structure of the spray release member 240 is equivalent to that of the mixing release member 230 , and the sealing pin 231 in the spray release member 240 is used to extend between the spray pipe 260 and the first material chamber 212 .

[0066] It should be noted that the spraying release member 240 is used to close or connect the spraying pipe 260 and the first material chamber 212, and its structure is the same as that of the mixing release member 230, and is also composed of a sealing pin 231, a spring 232 and a sealing ring 233. In this way, the high pressure gas in the pressure chamber 211 can be used to control the movement of the mixing release member 230 and the spraying release member 240. Furthermore, in one embodiment, the elastic coefficient of the spring 232 in the mixing release member 230 is greater than the elastic coefficient of the spring 232 in the spraying release member 240. Thus, when the pressure of the high-pressure gas in the pressure chamber 211 decreases, since the elastic force of the spring 232 in the mixing release member 230 is greater than the elastic force of the spring 232 in the spraying release member 240, the mixing release member 230 will be activated before the spraying release member 240, that is, the second material chamber 213 will be connected to the first material chamber 212 before the spraying pipe 260, so that the flame retardant can be fully contacted and a large amount of foam is generated, and then the spraying pipe 260 is connected to the central groove 141, so that the foam spreads to the central groove 141 and the two side grooves 142. In this way, it is ensured that sufficient air pressure is generated in the first material chamber 212 to allow the foam to spread from the bottom end of the central groove 141 to the top, and then spread from the air-avoiding groove 143 at the top to the side grooves 142.

[0067] like Figure 1 As shown, a method for manufacturing a fire-resistant acrylic board comprises the following steps:

[0068] Step S10, obtaining a composite acrylic plate, wherein a central groove and two side grooves are provided in the composite acrylic plate, the two side grooves are respectively located on both sides of the central groove, the top ends of the central groove and the two side grooves are connected to each other, and the bottom ends of the central groove and the two side grooves are independent of each other;

[0069] Step S20, obtaining a flame retardant assembly, wherein the flame retardant assembly includes a flame retardant seat, a hot melt ball, a mixing release piece and a spraying release piece, the flame retardant seat is provided with a pressure relief pipe and a spraying pipe, a pressure chamber, a first material chamber and a second material chamber are provided in the flame retardant seat, the pressure chamber is connected with the pressure relief pipe, the second material chamber and the spraying pipe are both connected with the first material chamber, the hot melt ball is provided in the pressure relief pipe to seal the pressure relief pipe, the mixing release piece and the spraying release piece are both provided in the pressure chamber, the mixing release piece also extends between the second material chamber and the first material chamber, and the spraying release piece also extends between the spraying pipe and the first material chamber;

[0070] Step S30, filling the pressure chamber with nitrogen gas at 1.2MPa-1.5MPa, so that the mixing release member closes the second material chamber and the first material chamber, and the spraying release member closes the spraying pipe and the first material chamber;

[0071] Step S40, injecting flame retardant into the first material cavity and the second material cavity respectively;

[0072] Step S50, insert the flame retardant seat into the bottom end of the composite acrylic plate, so that the pressure relief pipe is connected to the two side grooves, and the spray pipe is connected to the central groove, to obtain a fire-resistant acrylic plate.

[0073] It should be noted that the hot melt ball is a spherical structure made of paraffin. Nitrogen is filled into the pressure chamber, wherein the pressure of the nitrogen is 1.2MPa~1.5MPa, so as to ensure that the mixing release member reliably closes the second material chamber and the first material chamber, and the spray release member closes the spray pipe and the first material chamber. In this way, when the first material chamber and the second material chamber are independent closed chambers, aluminum sulfate solution is injected into the second material chamber, and sodium bicarbonate solution is injected into the first material chamber. Finally, the flame retardant seat is inserted into the bottom end of the composite acrylic board to obtain a finished fireproof acrylic board. In this way, the fireproof acrylic board obtained by the manufacturing method of the fireproof acrylic board of the present application can coat the fireproof material on the surface of the composite acrylic board, effectively achieving the purpose of fire retardancy.

[0074] It should be noted that the flame retardant seat is provided with an injection hole for connecting the pressure chamber, the first material chamber and the second material chamber, so as to inject high-pressure gas into the pressure chamber through the injection hole, or inject flame retardant into the first material chamber and the second material chamber. It should be noted that after the injection is completed, the injection holes can be completely sealed by gluing.

[0075] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A fire-resistant acrylic sheet, characterized in that: include: A composite acrylic plate, wherein a central groove and two side grooves are formed in the composite acrylic plate, wherein the two side grooves are respectively located on both sides of the central groove, wherein the top ends of the central groove and the two side grooves are interconnected, and the bottom ends of the central groove and the two side grooves are independent of each other; and A flame retardant assembly, the flame retardant assembly includes a flame retardant seat, a hot melt ball, a mixing release piece and a spray release piece, the flame retardant seat is provided with a pressure relief pipe and a spray pipe, the flame retardant seat is provided with a pressure chamber, a first material chamber and a second material chamber, the first material chamber and the second material chamber are both used to contain flame retardants, the pressure chamber is connected to the pressure relief pipe, the second material chamber and the spray pipe are both connected to the first material chamber, the flame retardant seat is plugged into the bottom end of the composite acrylic plate so that the pressure relief pipe is connected to the two side grooves, and the spray pipe is connected to the central groove, the hot melt ball is arranged in the pressure relief pipe to close the pressure relief pipe and the side groove, the mixing release piece and the spray release piece are both arranged in the pressure chamber, the mixing release piece also extends between the second material chamber and the first material chamber to close the second material chamber and the first material chamber, and the spray release piece also extends between the spray pipe and the first material chamber to close the spray pipe and the first material chamber.

2. The fire-resistant acrylic sheet according to claim 1, characterized in that: The composite acrylic plate includes a bottom plate, a top plate, two side plates and four plate bodies. The four plate bodies are stacked at intervals, and the bottom ends of the four plate bodies are connected to the bottom plate, the top ends of the four plate bodies are connected to the top plate, and the two sides of the four plate bodies are respectively connected to the two side plates, so that the central groove and the two side grooves are formed between the four plate bodies.

3. The fire-resistant acrylic sheet according to claim 2, characterized in that: The top ends of the two inner plates are each provided with a plurality of spaced-apart air-avoiding grooves, so that the central groove is connected with the side grooves through the air-avoiding grooves.

4. The fire-resistant acrylic sheet according to claim 2, characterized in that: A mounting groove is formed on one side of the bottom plate away from the plate body, and the flame retardant seat is inserted into the mounting groove.

5. The fire-resistant acrylic sheet according to claim 4, characterized in that: A plurality of slots are also provided on the inner bottom wall of the installation groove, and a plurality of the flame-retardant seats are provided, and each of the flame-retardant seats is plugged into each of the slots in a one-to-one correspondence.

6. The fire-resistant acrylic sheet according to claim 5, characterized in that: A first through hole and a second through hole are also provided on the inner bottom wall of the slot, wherein the first through hole is connected to the central slot, and the second through hole is connected to the side slot. When the flame retardant seat is inserted into the slot, the spray pipe is inserted into the first through hole, and the pressure relief pipe is inserted into the second through hole.

7. The fire-resistant acrylic sheet according to claim 6, characterized in that: There are two second through holes, which are respectively connected to the two side grooves. There are two pressure relief pipes, which are respectively inserted into the two second through holes.

8. The fire-resistant acrylic sheet according to claim 1, characterized in that: The mixing release member includes a sealing pin, a spring and a sealing ring. The sealing pin is inserted into the flame retardant seat so that one end of the sealing pin is located in the pressure chamber, and the other end of the sealing pin extends between the second material chamber and the first material chamber. An air outlet is provided on the axis of the sealing pin, and a conducting groove is provided on the outer wall of the sealing pin. The spring is sleeved on the outer wall of the sealing pin, and the spring abuts against the sealing pin and the inner wall of the pressure chamber respectively. The sealing ring is sleeved on one end of the sealing pin located in the pressure chamber. When the air pressure in the pressure chamber increases, the air pressure pushes the sealing pin so that the sealing ring closes the air outlet and the pressure chamber, and the conducting groove is not connected with the second material chamber and the first material chamber. When the air pressure in the pressure chamber decreases, the spring pushes the sealing pin so that the air outlet is connected with the pressure chamber, and the conducting groove is connected with the second material chamber and the first material chamber respectively.

9. The fire-resistant acrylic sheet according to claim 8, characterized in that: The structure of the material spraying release member is equivalent to that of the material mixing release member, and the sealing pin in the material spraying driving member is used to extend between the material spraying pipe and the first material cavity.

10. A method for manufacturing a fire-resistant acrylic sheet, characterized in that: The steps include: Step S10, obtaining a composite acrylic plate, wherein the composite acrylic plate is provided with a central groove and two side grooves, the two side grooves are respectively located on both sides of the central groove, the top ends of the central groove and the two side grooves are connected to each other, and the bottom ends of the central groove and the two side grooves are independent of each other; Step S20, obtaining a flame retardant component, wherein the flame retardant component includes a flame retardant seat, a hot melt ball, a mixing release piece and a spraying release piece, the flame retardant seat is provided with a pressure relief pipe and a spraying pipe, the flame retardant seat is provided with a pressure chamber, a first material chamber and a second material chamber, the pressure chamber is communicated with the pressure relief pipe, the second material chamber and the spraying pipe are both communicated with the first material chamber, the hot melt ball is arranged in the pressure relief pipe to close the pressure relief pipe, the mixing release piece and the spraying release piece are both arranged in the pressure chamber, the mixing release piece also extends between the second material chamber and the first material chamber, and the spraying release piece also extends between the spraying pipe and the first material chamber; Step S30, filling the pressure chamber with nitrogen gas at 1.2 MPa to 1.5 MPa, so that the mixing release member seals the second material chamber and the first material chamber, and the spraying release member seals the spraying pipe and the first material chamber; Step S40, injecting flame retardant into the first material cavity and the second material cavity respectively; Step S50, inserting the flame retardant seat into the bottom end of the composite acrylic plate, so that the pressure relief pipe is connected to the two side grooves, and the spray pipe is connected to the central groove, to obtain a fire-resistant acrylic plate.

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