Transparent fireproof plastic plate

Abstract

The invention discloses a transparent fireproof plastic plate. The transparent fireproof plastic plate comprises a middle plastic base plate and two fireproof reinforcing layers which are respectively formed on two opposite surfaces of the middle plastic base plate, the intermediate plastic substrate has a first visible light transmission rate of not less than 80% and has a flame retardant rating up to V0 from a thickness of 0.8 mm to 6.4 mm according to the UL94 burn test. Each fireproof reinforcing layer has a second visible light penetration rate not less than 80%, and each fireproof reinforcing layer can form a carbon protection layer after being heated at a high temperature. Therefore, the transparent fireproof plastic plate has high transparency and high fireproof performance, can be widely applied, and can be applied to fireproof building materials, compartment plates or ceilings, such as compartment plates or ceilings in a cold and hot channel closed system of a data center (server room).

Description

Technical Field

[0001] The present invention relates to a plastic plate, and more particularly to a transparent fireproof plastic plate. Background Art

[0002] In the prior art, most of the fireproof plates used in construction are plates without light transmittance. Since the existing fireproof plates do not have light transmittance or have poor light transmittance, the indoor lighting and sense of space are reduced. Moreover, although there are some fireproof plates with light transmittance on the market, their fireproof ability still needs to be improved. Therefore, the inventor of the present invention felt that the above defects could be improved, and then specially devoted himself to research and combined with the application of scientific principles, and finally proposed the present invention with reasonable design and effective improvement of the above defects. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a transparent fireproof plastic plate in view of the deficiencies of the prior art.

[0004] To solve the above technical problem, one of the technical solutions adopted by the present invention is to provide a transparent fireproof plastic plate, including: an intermediate plastic substrate having a first visible light transmittance of not less than 80%, and the intermediate plastic substrate having a flame retardant rating of V0 from a thickness of 0.8 mm to 6.4 mm according to the UL94 combustion test; and two fireproof reinforcement layers respectively formed on two opposite surfaces of the intermediate plastic substrate; wherein each of the fireproof reinforcement layers has a second visible light transmittance of not less than 80%, and each of the fireproof reinforcement layers can form a carbon protection layer after being heated at high temperature.

[0005] Preferably, the carbon protection layer has a lower heat conduction rate than that of the fireproof reinforcement layer before being heated at high temperature, so as to slow down the rate of heat transfer to the intermediate plastic substrate.

[0006] Preferably, the intermediate plastic substrate has a flame retardant rating of V0 from a thickness of 1.2 mm to 3.2 mm according to the UL94 combustion test.

[0007] Preferably, the plastic material of the intermediate plastic substrate is at least one selected from the group consisting of polyethylene terephthalate, polycarbonate, polyetherimide, polyarylate, polysulfone and polyethersulfone.

[0008] Preferably, the intermediate plastic substrate has a first thickness between 1.0 mm and 30 mm, and each of the fireproof reinforcement layers has a second thickness which is 0.0005 times to 0.25 times of the first thickness.

[0009] Preferably, each of the fireproof reinforcement layers is a coating formed on the surface of the intermediate plastic substrate by a coating method.

[0010] Preferably, the carbon protection layer is formed by the coating and has a foamed structure, and the carbon protection layer has a third thickness which is between 5 times and 30 times of the second thickness.

[0011] Preferably, the coating is formed by an organic coating or an inorganic coating; wherein, the organic coating contains an amino resin and is at least one selected from the material group consisting of: aniline, dicyandiamide, melamine, diammonium phosphate, ammonium polyphosphate, and diammonium kainite phosphate; wherein, the inorganic coating contains silicate and is at least one selected from the material group consisting of: sodium silicate, potassium silicate, and calcium silicate.

[0012] Preferably, each of the fireproof reinforcement layers is a film formed on the surface of the intermediate plastic substrate by a thermal lamination method.

[0013] Preferably, the film is a fluorine-containing polymer film and is at least one selected from the group consisting of: a polyvinyl fluoride film, a polyvinylidene fluoride film, a tetrafluoroethylene-perfluoroalkoxy copolymer film, and a tetrafluoroethylene-hexafluoropropylene copolymer film.

[0014] Preferably, each of the fireproof reinforcement layers is a laminated structure and includes a film directly laminated on the surface of the intermediate plastic substrate by a thermal lamination method, and a coating formed on the surface of the film away from the intermediate plastic substrate by a coating method; wherein, the film is a fluorine-containing polymer film, and the coating is formed by an organic coating or an inorganic coating, the organic coating contains an amino resin, and the inorganic coating contains silicate.

[0015] The beneficial effect of the present invention is that the transparent fireproof plastic board provided by the present invention can, through the technical solutions of "an intermediate plastic substrate having a first visible light transmittance of not less than 80% and having a flame retardant rating of V0 from a thickness of 0.8 mm to 6.4 mm according to the UL94 combustion test" and "two fireproof reinforcement layers respectively formed on two opposite surfaces of the intermediate plastic substrate; wherein each of the fireproof reinforcement layers has a second visible light transmittance of not less than 80% and can form a carbon protection layer after being heated at a high temperature", so that the transparent fireproof plastic board has high transparency and high fireproof performance, can have a wider range of applications, and can be applied to fireproof building materials, partition boards, or ceilings, such as: partition boards or ceilings in the cold and hot aisle enclosure system of a data center (server room).

[0016] To further understand the features and technical content of the present invention, please refer to the following detailed description and drawings related to the present invention. However, these descriptions and drawings are only used to illustrate the present invention and do not impose any limitations on the protection scope of the present invention. Description of the Drawings

[0017] Figure 1 Schematic diagram of the transparent fireproof plastic plate with a laminated structure according to the first embodiment of the present invention.

[0018] Figure 2 Schematic diagram of the transparent fireproof plastic plate according to the first embodiment of the present invention after being heated at high temperature and forming a carbon protection layer.

[0019] Figure 3 Schematic diagram of the transparent fireproof plastic plate with a laminated structure according to the second embodiment of the present invention.

[0020] Figure 4 Schematic diagram of the transparent fireproof plastic plate according to the second embodiment of the present invention after being heated at high temperature and forming a carbon protection layer.

[0021] Figure 5 Schematic diagram of the transparent fireproof plastic plate with a laminated structure according to the third embodiment of the present invention.

[0022] Figure 6 Schematic diagram of the transparent fireproof plastic plate according to the third embodiment of the present invention after being heated at high temperature and forming a carbon protection layer. Detailed Embodiments

[0023] The following are specific embodiments to illustrate the implementation manners of the "transparent fireproof plastic plate" disclosed in the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification.

[0024] The present invention can be implemented or applied through other different specific embodiments. The details in this specification can also be applied from different perspectives and various modifications and changes can be made without departing from the concept of the present invention. Additionally, it is stated in advance that the drawings of the present invention are only simple schematic illustrations and are not drawn according to actual sizes. The following embodiments will further detail the related technical content of the present invention, but the disclosed content is not intended to limit the protection scope of the present invention.

[0025] It should be understood that although terms such as "first", "second", "third", etc. may be used herein to describe various materials or parameters, these materials or parameters should not be limited by these terms. These terms are mainly used to distinguish one material from another, or one parameter from another.

[0026] In addition, the term "or" as used herein may, depending on the context, include any one or a combination of more than one of the associated listed items.

[0027] [First Embodiment]

[0028] Please refer to Figure 1 and Figure 2 As shown, the first embodiment of the present invention provides a transparent fireproof plastic sheet 100A.

[0029] Among them, Figure 1 shows a schematic diagram of the laminated structure of the transparent fireproof plastic sheet 100A of the first embodiment of the present invention without being heated at high temperature, and Figure 2 shows a schematic diagram of the laminated structure of the transparent fireproof plastic sheet 100A of the first embodiment of the present invention after being heated at high temperature and forming a carbon protection layer 2a.

[0030] As Figure 1 shown, the transparent fireproof plastic sheet 100A includes: an intermediate plastic substrate 1 and two fireproof reinforcement layers 2, and the two fireproof reinforcement layers 2 are respectively formed on two opposite surfaces of the intermediate plastic substrate 1.

[0031] The intermediate plastic substrate 1 is selected from plastic sheets with specific material properties.

[0032] More specifically, a first visible light transmittance (VLT) of the intermediate plastic substrate 1 is not less than 80%. Furthermore, according to the UL94 combustion test, the intermediate plastic substrate 1 has a flame retardant rating of V0 in the range from a thickness of 0.8 millimeters (mm) to 6.4 millimeters. Preferably, the intermediate plastic substrate 1 has a flame retardant rating of V0 in the range from a thickness of 1.2 millimeters to 3.2 millimeters (particularly preferably 1.6 millimeters) according to the UL94 combustion test.

[0033] It should be noted that the UL94 combustion test described in the embodiments of the present invention is tested according to the standard test method of "IEC 60695-11-10 Horizontal and Vertical Combustion Fire Hazard Test".

[0034] The intermediate plastic substrate 1 has a first thickness T1. The first thickness T1 is between 1.0 millimeter and 30 millimeters, and preferably between 3 millimeters and 20 millimeters.

[0035] In some embodiments of the present invention, the plastic material of the intermediate plastic substrate 1 is selected from at least one of the material group consisting of: polyethylene terephthalate (PET), polycarbonate (PC), polyetherimide (PEI), polyarylate (PAR), polyethersulfone (PES), and polysulfone (PSU).

[0036] Furthermore, the intermediate plastic substrate 1 is further dispersed with flame retardants in the plastic material.

[0037] Among them, the flame retardant is at least one of inorganic flame retardants, halogen flame retardants, borate flame retardants, phosphorus-containing flame retardants, nitrogen-containing flame retardants, intumescent flame retardants, and silicone flame retardants. In a specific embodiment, the plastic material of the intermediate plastic substrate 1 is polyethylene terephthalate, and the flame retardant is a phosphorus-containing flame retardant, but the present invention is not limited thereto.

[0038] In the present invention, as long as the intermediate plastic substrate 1 has the visible light transmittance and UL94 flame resistance as described above, it conforms to the spirit of the present invention and belongs to the protection scope of the present invention.

[0039] It is worth mentioning that the intermediate plastic substrate 1 is a plate formed by an extrusion molding process, and an extrusion temperature of the extrusion molding process is between 240 °C and 400 °C, but the present invention is not limited thereto.

[0040] Please refer to Figure 1 as shown, each of the fireproof reinforcement layers 2 is a transparent fireproof coating formed on the surface of the intermediate plastic substrate 1 by a coating method.

[0041] Among them, a second visible light transmittance of each of the fireproof reinforcement layers 2 is not less than 80%. In addition, each of the fireproof reinforcement layers 2 has a second thickness T2, which is between 0.0005 times and 0.25 times of the first thickness T1 of the intermediate plastic substrate 1. More specifically, the second thickness T2 of each of the fireproof reinforcement layers 2 is between 10 microns and 800 microns.

[0042] Furthermore, as Figure 2As shown, each of the fireproof reinforcement layers 2 can form a carbon protection layer 2a after being heated at a high temperature (such as a high temperature of 150°C to 1500°C) in the atmospheric environment. The carbon protection layer 2a covers the surface of the intermediate plastic substrate 1 and has a lower heat conduction rate compared to the fireproof reinforcement layer 2 before being heated at a high temperature, so as to slow down the rate of heat transfer to the intermediate plastic substrate 1, thereby reducing the flammability of the surface of the plastic plate 100A. In this embodiment, the carbon protection layer 2a has a foamed structure, which has a third thickness T3, and the third thickness T3 is between 5 times and 30 times of the second thickness T2 (that is, the thickness of the fireproof reinforcement layer 2 before being heated at a high temperature), and is preferably between 10 times and 30 times.

[0043] In other words, the fireproof reinforcement layer 2 expands after being heated at a high temperature and forms a carbon protection layer 2a (carbon foam heat insulation layer) with a foamed structure to insulate the intermediate plastic substrate 1.

[0044] In addition, the carbon protection layer 2a formed after being heated at a high temperature has a third visible light transmittance lower than the second visible light transmittance, and the third visible light transmittance can be, for example, lower than 70%, but the present invention is not limited thereto. It should be noted that the first, second, and third "visible light transmittances" mentioned in the embodiments of the present invention can be obtained, for example, by testing according to the standard test method of "ASTM D1003 Standard Test for Haze and Light Transmittance of Transparent Plastics".

[0045] Please refer to Figure 1 As shown, each of the fireproof reinforcement layers 2 is a transparent fireproof coating formed by coating an organic coating or an inorganic coating.

[0046] In some embodiments of the present invention, the organic coating contains an amino resin, which is selected from at least one of the materials in the material group consisting of: aniline, dicyandiamide, melamamine, diammonium phosphate, ammonium polyphosphate, and diammonium phosphate.

[0047] In some embodiments of the present invention, the inorganic coating contains silicates, which are selected from at least one of the materials in the material group consisting of: sodium silicate, potassium silicate, and calcium silicate.

[0048] The above materials can react with carbon dioxide in the air when heated at high temperatures to form a carbon protection layer 2a with a foamed structure. Furthermore, in some embodiments of the present invention, the fireproof reinforcement layer 2 is further added with a carbon-forming substance, such as a carbon-rich polyhydroxy compound or a hydroxyl-containing organic resin, but the present invention is not limited thereto.

[0049] The visible light transmittance of the transparent fireproof plastic sheet 100A according to the embodiment of the present invention can reach more than 80%, and it can be applied to fireproof building materials, partition boards or ceilings, such as partition boards or ceilings in the cold and hot aisle enclosure system of a data center (server room).

[0050] It is worth mentioning that the transparent fireproof plastic sheet 100A according to the embodiment of the present invention can have better flame resistance through the laminated design of the intermediate plastic substrate 1 and the two fireproof reinforcement layers 2.

[0051] [Second Embodiment]

[0052] Please refer to Figure 3 and Figure 4 As shown, the second embodiment of the present invention provides a transparent fireproof plastic sheet 100B.

[0053] Among them, Figure 3 shows a schematic diagram of the laminated structure of the transparent fireproof plastic sheet 100B according to the second embodiment of the present invention without being heated at high temperatures, and Figure 4 shows a schematic diagram of the laminated structure of the transparent fireproof plastic sheet 100B according to the second embodiment of the present invention after being heated at high temperatures and forming a carbon protection layer 2a'.

[0054] As Figure 3 shown, the transparent fireproof plastic sheet 100B includes: an intermediate plastic substrate 1 and two fireproof reinforcement layers 2', and the two fireproof reinforcement layers 2' are respectively formed on two opposite surfaces of the intermediate plastic substrate 1.

[0055] A first visible light transmittance of the intermediate plastic substrate 1 is not less than 80%.

[0056] The intermediate plastic substrate 1 has a flame retardant rating of V0 according to the UL94 combustion test in the range from a thickness of 0.8 millimeters (mm) to 6.4 millimeters.

[0057] The intermediate plastic substrate 1 has a first thickness T1, and the first thickness T1 is between 1.0 millimeter and 30 millimeters.

[0058] The remaining material characteristics of the intermediate plastic substrate 1 are similar to those of the above first embodiment and will not be elaborated here.

[0059] Please refer to Figure 3As shown, each of the fireproof reinforcement layers 2' is a transparent fireproof film and is formed on the surface of the intermediate plastic substrate 1 by thermal lamination. Among them, the thermal lamination temperature of the transparent fireproof film to the surface of the intermediate plastic substrate 1 is between 190°C and 400°C.

[0060] Furthermore, a second visible light transmittance of each of the fireproof reinforcement layers 2' is not less than 80%. In addition, each of the fireproof reinforcement layers 2' has a second thickness T2, which is between 0.0005 times and 0.25 times the first thickness T1 of the intermediate plastic substrate 1. More specifically, the second thickness T2 of each of the fireproof reinforcement layers 2' is between 10 microns and 800 microns, and preferably between 50 microns and 500 microns.

[0061] Furthermore, as Figure 4 shown, each of the fireproof reinforcement layers 2' does not produce spontaneous combustion after being heated at high temperature in the atmospheric environment (such as a high temperature of 350°C to 1000°C), and can form a carbon protection layer 2a', the carbon protection layer 2a' covers the surface of the intermediate plastic substrate 1, and has a lower heat conduction rate compared to the fireproof reinforcement layer 2' before being heated at high temperature, so as to slow down the rate of heat transfer to the intermediate plastic substrate 1, thereby reducing the flammability of the surface of the plastic plate 100B.

[0062] In this embodiment, the carbon protection layer 2a' formed after being heated at high temperature has a slightly expanded thickness (for example, expanded by at least 50%) and has high flame retardancy.

[0063] Please refer to Figure 3 shown, the transparent fireproof film as the fireproof reinforcement layer 2' is a fluorine-containing polymer film. In some embodiments of the present invention, the fluorine-containing polymer film is selected from at least one of the group consisting of: polyvinylenefluoride (PVF) film, polyvinylidene difluoride (PVDF) film, perfluoroalkoxy alkane (PFA) film, and fluorinated ethylenepropylene (FEP) film.

[0064] [Third Embodiment]

[0065] Please refer to Figure 5 and Figure 6 shown, the third embodiment of the present invention provides a transparent fireproof plastic plate 100C.

[0066] Among them, Figure 5Schematic diagram of the laminated structure of the transparent fireproof plastic sheet 100C according to the third embodiment of the present invention before being heated at high temperature, and Figure 6 Schematic diagram of the laminated structure of the transparent fireproof plastic sheet 100C according to the third embodiment of the present invention after being heated at high temperature and forming a carbon protection layer.

[0067] As Figure 5 shown, the transparent fireproof plastic sheet 100C includes: an intermediate plastic substrate 1 and two fireproof reinforcement layers, and the two fireproof reinforcement layers are respectively formed on two opposite surfaces of the intermediate plastic substrate 1.

[0068] The main difference between this embodiment and the foregoing embodiments is that each of the fireproof reinforcement layers is a laminated structure and includes a first fireproof reinforcement layer 2' and a second fireproof reinforcement layer 2.

[0069] Among them, the first fireproof reinforcement layer 2' is the transparent fireproof film (such as: polyvinyl fluoride film) as described in the second embodiment above, and it is directly attached to the surface of the intermediate plastic substrate 1 by a thermal lamination method.

[0070] Furthermore, the second fireproof reinforcement layer 2 is the transparent fireproof coating as described in the first embodiment above, and it is formed on the surface of the first fireproof reinforcement layer 2' (that is, the transparent fireproof film) away from the intermediate plastic substrate 1 by a coating method.

[0071] Furthermore, as Figure 6 shown, each of the fireproof reinforcement layers (including 2, 2') can form carbon protection layers 2a, 2a' after being heated at high temperature (such as: high temperature of 150°C to 1500°C) in an atmospheric environment. The carbon protection layers 2a, 2a' cover the surface of the intermediate plastic substrate 1 to slow down the rate of heat transfer to the intermediate plastic substrate 1, and thus can reduce the flammability of the surface of the plastic sheet 100C.

[0072] [Advantages of the embodiment]

[0073] The beneficial effects of the embodiments of the present invention are as follows. The transparent fireproof plastic board provided by the embodiments of the present invention can be achieved through the technical solutions of "an intermediate plastic substrate having a first visible light transmittance of not less than 80%, and the intermediate plastic substrate having a flame retardant rating of V0 from a thickness of 0.8 mm to 6.4 mm according to the UL94 combustion test" and "two fireproof reinforcement layers respectively formed on two opposite surfaces of the intermediate plastic substrate; wherein each of the fireproof reinforcement layers has a second visible light transmittance of not less than 80%, and each of the fireproof reinforcement layers can form a carbon protection layer after being heated at high temperature". As a result, the transparent fireproof plastic board has high transparency and high fireproof performance, and can have a wider range of applications. It can be applied to fireproof building materials, partition boards or ceilings, for example: partition boards or ceilings in the cold and hot aisle enclosure system of a data center (server room).

[0074] The above are only the preferred feasible embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any equivalent changes and modifications made according to the claims of the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A transparent fireproof plastic board, characterized in that: The transparent fireproof plastic plate comprises: an intermediate plastic substrate having a first visible light transmittance of not less than 80%, and the intermediate plastic substrate having a flame retardant grade of V0 from a thickness of 0.8 mm to 6.4 mm according to a UL94 combustion test; and Two fireproof reinforcing layers are respectively formed on two opposite surfaces of the middle plastic substrate; each of the fireproof reinforcing layers has a second visible light transmittance of not less than 80%, and each of the fireproof reinforcing layers can be formed into a carbon protective layer after being heated at high temperature.

2. The transparent fireproof plastic plate according to claim 1, characterized in that: The carbon protective layer has a lower thermal conductivity than the fireproof reinforcing layer before being heated at a high temperature, so as to slow down the rate at which heat is transferred to the intermediate plastic substrate.

3. The transparent fireproof plastic plate according to claim 1, characterized in that: The intermediate plastic substrate has a flame retardant grade of V0 according to the UL94 combustion test from a thickness of 1.2 mm to 3.2 mm.

4. The transparent fireproof plastic plate according to claim 1, characterized in that: The plastic material of the intermediate plastic substrate is at least one selected from the group consisting of polyethylene terephthalate, polycarbonate, polyetherimide, polyarylate, polyethersulfone and polysulfone.

5. The transparent fireproof plastic plate according to claim 1, characterized in that: The intermediate plastic substrate has a first thickness between 1.0 mm and 30 mm, and each of the fireproof reinforcement layers has a second thickness, which is 0.0005 to 0.25 times the first thickness.

6. The transparent fireproof plastic plate according to claim 5, characterized in that: Each of the fireproof reinforcing layers is a coating formed on the surface of the intermediate plastic substrate by coating.

7. The transparent fireproof plastic plate according to claim 6, characterized in that: The carbon protective layer is formed by the coating layer and has a foamed structure, and the carbon protective layer has a third thickness, which is 5 to 30 times the second thickness.

8. The transparent fireproof plastic plate according to claim 6, characterized in that: The coating is formed by an organic coating or an inorganic coating; wherein the organic coating contains an amino resin and is at least one selected from the material group consisting of aniline, dicyandiamide, melamine, diammonium phosphate, ammonium polyphosphate and diammonium phosphate; wherein the inorganic coating contains silicates and is at least one selected from the material group consisting of sodium silicate, potassium silicate and calcium silicate.

9. The transparent fireproof plastic plate according to claim 1, characterized in that: Each of the fireproof reinforcement layers is a film formed on the surface of the intermediate plastic substrate by heat bonding; wherein the film is a fluorine-containing polymer film, and the fluorine-containing polymer film is at least one selected from the group consisting of polyvinyl fluoride film, polyvinylidene fluoride film, tetrafluoroethylene perfluoroalkoxy copolymer film and tetrafluoroethylene-hexafluoropropylene copolymer film.

10. The transparent fireproof plastic plate according to claim 1, characterized in that: Each of the fireproof reinforcement layers is a laminated structure and includes a film directly bonded to the surface of the intermediate plastic substrate by thermal bonding and a coating formed on the surface of the film away from the intermediate plastic substrate by coating; wherein the film is a fluorine-containing polymer film, and the coating is formed by an organic coating or an inorganic coating; the organic coating contains an amino resin, and the inorganic coating contains silicates.

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