A-grade flame-retardant glass fiber reinforced plastic decorative plate and continuous production method thereof

Abstract

The invention relates to the technical field of flame-retardant glass fiber reinforced plastic production, in particular to an A-grade flame-retardant glass fiber reinforced plastic decorative plate and a continuous production method thereof. Raw materials of the plate comprise a modified inorganic resin solution, a water-based organic resin solution, an active filler, fiber cloth and a coagulant, and the continuous production method comprises the following steps: mixing and stirring the modified inorganic resin solution and the water-based organic resin solution to obtain a dispersion; adding active filler to obtain colloid; the colloid is leveled and laid on a mold, fiber cloth is laid on the colloid, then a coagulation accelerator is sprayed, and a plate precursor system is obtained; and carrying out continuous rolling, baking and curing reaction to obtain the A-grade flame-retardant glass fiber reinforced plastic decorative plate. The plate has good mechanical properties such as tensile strength, bending resistance, impact resistance and the like, and can reach A2-level flame retardant property; the continuous production method can reduce production energy consumption and cost, improve production efficiency and provide good basic conditions for market expansion.

Description

Technical Field

[0001] The present invention relates to the technical field of flame - retardant fiberglass production, and more particularly, to an A - class flame - retardant fiberglass decorative board and its continuous production method. Background Art

[0002] Existing fiberglass is widely used in many fields such as construction, transportation, and chemical industry due to its high strength, high toughness, and good corrosion resistance. In addition, fiberglass also has good acid resistance, alkali resistance, and anti - corrosion ability, gradually replacing traditional materials such as carbon steel and stainless steel in the field of chemical corrosion prevention. However, despite many advantages of fiberglass, due to its low flame - retardant grade and inability to achieve A - class flame - retardant performance, its application and promotion are greatly restricted. The main reason is that the organic resin in fiberglass will decompose and release a large amount of harmful and toxic components when heated, thus bringing serious potential safety hazards.

[0003] Inorganic fiberglass usually refers to magnesium oxychloride cement materials. This material has a relatively high flame - retardant grade, but it is brittle, has low hardness, is not water - resistant, has a long production cycle, and slow strength increase. During the production process, inorganic fiberglass needs to adopt a batch - pulse production method. Specifically, in the batch - pulse production method, some operation steps need to be carried out intermittently, such as the stirring and coating of slurries. Although this pulsed operation method helps to better control the mixing and forming quality of materials, it results in low production efficiency, relies on a large number of templates and sites, and requires a large amount of manpower and equipment. Therefore, although inorganic fiberglass has advantages in flame - retardant performance, it still faces many challenges in practical applications. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an A - class flame - retardant fiberglass decorative board and its continuous production method.

[0005] The technical solution of the present invention to solve the above - mentioned technical problem is as follows:

[0006] The present invention provides a continuous production method of an A - class flame - retardant fiberglass decorative board. The raw materials of the board include a modified inorganic resin solution, a water - based organic resin solution, an active filler, a fiber cloth, and a coagulant accelerator. The continuous production method includes the following steps:

[0007] S1. Mix and stir the modified inorganic resin solution and the water - based organic resin solution to obtain a dispersion;

[0008] S2. Add the filler to the dispersion to obtain a colloid;

[0009] S3. Level and lay the colloid on a mold, lay the fiber cloth thereon, and then spray the coagulant accelerator to obtain a precursor system of the board;

[0010] S4. Continuously roll, bake and cure the sheet precursor system to obtain the Class A fire-retardant FRP decorative sheet.

[0011] On the basis of the above technical solutions, the present invention can also be improved as follows.

[0012] Further, the modified inorganic resin solution is prepared from an inorganic resin, a silane coupling agent, trihydroxypropane and water. The inorganic resin is one or a mixture of two of silica sol and silicate; the solid mass percentage in the modified inorganic resin solution is 25%-35%.

[0013] Further, the solid mass percentage in the aqueous organic resin solution is 30%-40%; the organic resin in the aqueous organic resin solution is one of unsaturated polyester resin, epoxy resin, polyurethane resin, acrylic resin and vinyl resin; the preparation method of the aqueous organic resin solution is as follows:

[0014] When the organic resin is one of unsaturated polyester resin, vinyl resin and acrylic resin, first mix the organic resin and the curing agent, then emulsify the mixture with a special emulsifier SSF2-75, and then mix with water;

[0015] When the organic resin is epoxy resin, mix the organic resin with an aqueous epoxy resin curing agent, stir and add water for emulsification;

[0016] When the organic resin is polyurethane resin, mix and / or react polyether polyol with an HDI trimer curing agent or a 70-degree low-temperature deblocking NCO curing agent, and then mix with water.

[0017] Further, in the dispersion, the mass ratio of the inorganic resin to the organic resin is 0.3-1:1.

[0018] Further, the components of the active filler include metakaolin and hydroxyapatite, and the fiber cloth is a glass fiber cloth; based on the mass of the raw materials being 100%, the mass percentage of the filler is 30%-50%, the mass percentage of the fiber cloth is 10%-20%, and the mass percentage of the coagulant is 0.5%-2%.

[0019] Further, in step S2, the viscosity of the colloid is 600-1500 CPs.

[0020] Further, in step S4, the pressure of the continuous rolling is 10-100 Kpa, and the speed is 1-2 M / minute.

[0021] Further, move the sheet precursor system in a baking device at a speed of 1-2 m / min and conduct the baking; the baking temperature is 40-90 °C, and the baking time is 60-90 min.

[0022] The present invention also provides an A-level flame-retardant FRP decorative sheet, which is prepared by using the continuous production method as described above.

[0023] Further, the thickness of the sheet is 0.5-6 mm, the specific gravity is 1.8-2.2, the tensile strength is greater than 80 MPa, the bending strength is greater than 40 MPa, and the Mohs hardness is 5-6H.

[0024] The beneficial effects of the present invention are as follows:

[0025] (1) In the continuous production method of the A-level flame-retardant FRP decorative sheet of the present invention, the inorganic resin and the organic resin are compounded, and a through-grid structure (IPN) can be formed to ensure good strength.

[0026] (2) In the continuous production method of the A-level flame-retardant FRP decorative sheet of the present invention, through the specific selection and ratio of the organic resin, the inorganic resin, the fiber cloth and the active filler, it can be ensured that the sheet has good mechanical properties such as tensile, bending and impact resistance.

[0027] (3) In the continuous production method of the A-level flame-retardant FRP decorative sheet of the present invention, the combination of the organic resin, the inorganic resin, the fiber cloth and the active filler also endows it with good temperature resistance and flame-retardant performance, significantly reducing the release of toxic and harmful gases or smoke, so that the sheet can reach A2-level flame-retardant performance.

[0028] (4) The continuous production method of the A-level flame-retardant FRP decorative sheet of the present invention can reduce production energy consumption and costs, improve production efficiency, and provide good basic conditions for market expansion. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic flow chart of the continuous production method of the A-level flame-retardant FRP decorative sheet of the present invention. DETAILED DESCRIPTION

[0030] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0031] The raw materials of the continuous production method of the A-level flame-retardant FRP decorative sheet of the present invention include a modified inorganic resin solution, an aqueous organic resin solution, an active filler, a fiber cloth and a coagulant, as Figure 1 shown, the continuous production method includes the following steps:

[0032] S1. Mix and stir the modified inorganic resin solution and the water-based organic resin solution to obtain a dispersion;

[0033] S2. Add active fillers to the dispersion to obtain a colloid;

[0034] S3. Level and lay the colloid on a mold, lay a fiber cloth on it, and then spray a coagulant to obtain a precursor system of the board;

[0035] S4. Continuously roll, bake and cure the precursor system of the board to obtain an A-level flame-retardant FRP decorative board.

[0036] The continuous production method of the A-level flame-retardant FRP decorative board of the present invention uses a compound of inorganic resin and organic resin to form an interpenetrating network structure (IPN); then add a fiber cloth to enhance the mechanical properties of tensile, bending and impact resistance. The inorganic resin, fiber cloth and active fillers have good temperature resistance and flame-retardant properties, significantly reducing the release of toxic and harmful gases or smoke, so that the board can reach A2-level flame-retardant performance. In addition, each step of the present invention can be carried out continuously, so as to realize continuous production, which can reduce production energy consumption and costs, improve production efficiency, and provide good basic conditions for market expansion.

[0037] The inorganic resin is one or a mixture of two of silica sol and silicate, and the organic resin is one of unsaturated polyester resin, epoxy resin, polyurethane resin, acrylic resin and vinyl resin.

[0038] The above inorganic resin can form a resin with a -Si-O-Si- macromolecular structure through polycondensation, and the fiber cloth is a glass fiber cloth. The above organic resin can be a polymer material crosslinked and polymerized by an initiator / curing agent or polymerized by high temperature initiation. These inorganic resins and organic resins are crosslinked and polymerized respectively to form an interpenetrating network. By mixing in a suitable proportion, they can form an organic whole with active fillers and glass fibers, and the flame-retardant grade of the material can be improved to A2-level non-combustible through the inorganic network.

[0039] Preferably, the modified inorganic resin solution is prepared by using inorganic resin, silane coupling agent, trihydroxypropane and water; the inorganic resin is in the form of aggregated nanoparticles and is dispersed in an aqueous system. It is necessary to modify such inorganic resin nanoparticles. The method used is to add a silane coupling agent and trihydroxypropane to stably disperse the inorganic resin in the solution and improve the compatibility with organic polymers.

[0040] Preferred silane coupling agents are KH550, KH560, KH570, KH602, KH792, etc.

[0041] Preferably, the solid mass percentage in the modified inorganic resin solution is 25%-35%; the solid mass percentage in the water-based organic resin solution is 30%-40%.

[0042] The curing agents and preparation methods corresponding to different types of organic resins are not the same, which are specifically as follows:

[0043] When the organic resin is one of unsaturated polyester resin, vinyl resin, and acrylic resin, first mix the organic resin and the curing agent, then emulsify the mixture with a special emulsifier SSF2-75, and then mix it with water. Among them, the curing agent is a mixture of benzoyl peroxide (BPO) and cumene hydroperoxide (CHP), and the mixing mass ratio of the two is 3-5:1.

[0044] When the organic resin is epoxy resin, use a water-based epoxy resin curing agent, mix the two, stir and add water for an emulsification reaction, and the reaction time is 10-30 minutes.

[0045] When the organic resin is polyurethane resin, mix and / or react polyether polyol with HDI trimer curing agent or 70-degree low-temperature deblocking NCO curing agent, add water and mix. When the heating temperature is greater than 70°C, deblocking crosslinking can be achieved at this temperature. In this case, the polyether polyol itself is an emulsifier, and no other emulsifier needs to be added.

[0046] After the organic resin is emulsified, it changes from oil-based to water-based, disperses in the aqueous solution, and forms an oil-in-water droplet form.

[0047] For step S1 of the present invention, in the whole dispersion, the mass ratio of the inorganic resin to the organic resin is 0.3-1:1. After the organic and inorganic resins are mixed, due to the presence of the aqueous solution, cross-linking reactions will not occur between them, and there is a long adaptation period.

[0048] For step S2 of the present invention, the components of the active filler used include metakaolin and hydroxyapatite.

[0049] For step S3 of the present invention, the coagulant is polyacrylate; the addition of the coagulant and the subsequent baking process can quickly cure the sheet precursor system, which is suitable for rapid demoulding on the production line.

[0050] Based on the mass of the raw materials being 100%, the mass percentage of the active filler is 30%-50%, the mass percentage of the fiber cloth is 10%-20%, the mass percentage of the coagulant is 0.5-2%, and the balance is the organic and inorganic resins and curing agents and other components after removing water; the above ratio can effectively ensure the strength and flame retardancy of the sheet.

[0051] Preferably, the viscosity of the colloid obtained in step S2 is 600-1500 CPs; when the viscosity is too high, it is not conducive to leveling, which may cause uneven distribution of the thickness and flame retardancy of the board. When the viscosity is too low, the strength will be poor.

[0052] Preferably, in step S4, the pressure of continuous rolling is 30-100 Kpa, and the speed is 1-2 M / min.

[0053] Preferably, in step S4, the baking temperature is 40-90 °C, and the baking time is 60-90 min.

[0054] More preferably, in order to improve efficiency, in the actual production process, the board precursor system is moved in the baking device at a speed of 1-2 M / min and baked and cured.

[0055] In steps S3-S4 of the present invention, with the laying of the fiber cloth, the addition of the coagulant polyacrylate, and continuous rolling and mixing, the moisture in the board precursor system is gradually reduced. The inorganic resin and the organic resin crosslink and react respectively. The organic resin forms a network coating on the inorganic resin particles. As the temperature rises from room temperature to the baking temperature, the reaction of the inorganic resin accelerates, forming a bridge between the particles and forming a cured overall structure. The inorganic resin forms silicon-oxygen bonds -Si-O-Si-. Due to the high temperature resistance of the inorganic resin, it does not burn when encountering fire; the organic resin is carbonized at high temperature in the inorganic network, preventing the flame from extending into the material, thereby achieving the purpose of flame retardancy.

[0056] In actual use, a relevant production line can be set up. After the dispersions of the inorganic resin and the organic resin are prepared, they can be placed on the moving production line and continue to perform the operations of step S2, step S3, and step S4 in sequence. Especially continuous rolling and baking can be directly implemented on the conveyor line, which can ensure that the production line can always obtain the finished board, that is, continuous production is realized, and the production efficiency is effectively improved.

[0057] In addition, the preparation of the modified inorganic resin solution and the water-based organic resin solution can also be realized by automated equipment, thereby further improving the production efficiency of the present invention.

[0058] The A-level flame-retardant FRP decorative board of the present invention is prepared by the continuous production method as described above.

[0059] Preferably, the thickness of the board of the present invention is 0.5-6 mm, the specific gravity is 1.8-2.2, and the Mohs hardness is 5-6H.

[0060] The present invention is described below through specific examples.

[0061] Example 1

[0062] In this embodiment, the method of the present invention is used to prepare Class A flame-retardant FRP decorative plates, and the specific preparation method is as follows:

[0063] Modification treatment of inorganic resin: 100 parts by mass of inorganic resin potassium silicate is stirred at a speed of 600 RPM for 3 minutes at room temperature, then 5 parts by mass of coupling agent KH792 is slowly added dropwise, and then 2 parts by mass of trihydroxypropane is added dropwise. After dispersing for 30 minutes, a modified inorganic resin solution is obtained and left standing for use.

[0064] In this embodiment, potassium silicate is a solution with a modulus of 3.3 and a solid content of 30%.

[0065] The waterborne organic resin solution in this embodiment is prepared using unsaturated resin 196#, and this resin is weakly acidic. The preparation method is to mix the pre-promoted 196# resin and the curing agent evenly at a ratio of 100:2 at room temperature, add special emulsifier SSF2-75, stir well for 1 hour, then add 2 times of water, and disperse at a high speed of 1000-2000 RPM for 15 minutes to obtain an organic unsaturated resin emulsion with a resin content of about 30%. The curing agent is a mixture of BPO and CHP, and the mass ratio of the two is 4:1.

[0066] At a stirring speed of 600 RPM, the above-mentioned modified inorganic resin solution and organic resin solution are mixed in a mass ratio of the net content of inorganic resin to the net content of organic resin of 1:1.

[0067] During mixing, the specific operation is to slowly add the modified inorganic resin solution to the organic unsaturated resin to form a stable dispersion.

[0068] Gradually add 50 parts of hydroxyapatite filler, 200 parts of metakaolin, and 1 part of KH550 to the dispersion to form a medium-viscosity colloid of 600-1500 CPs.

[0069] Level the obtained colloid on the bottom mold, and lay two layers of 250G / M

[0069] ,

[0073] ,

[0072] ,

[0071] ,

[0070] , , 2 , , , , alkali-free fiberglass cloth, evenly spray 1 part of sodium polyacrylate coagulant with a spraying machine, and mix evenly under a continuous rolling equipment. Then convey the above materials to a hot air oven at a low temperature of 40°C and a high temperature of 80°C, with a traveling speed of 1M / min, and bake for 60 min to fully cure the inorganic resin and organic resin to reach the cutting strength.

[0070] Example 2

[0071] In this embodiment, the method of the present invention is used to prepare Class A flame-retardant FRP decorative plates, and the modified inorganic resin solution used is the same as that in Example 1.

[0072] Other specific preparation steps are as follows:

[0073] In this embodiment, 128 epoxy resin is used to prepare an aqueous organic resin solution, and the curing agent is a non-ionic aqueous fatty amine resin. Among them, the mass fraction of 128 epoxy resin is 100 parts, and the amine hydrogen equivalent of the non-ionic aqueous fatty amine resin is 280. After mixing the two according to the mass ratio of epoxy resin to curing agent of 1:1.5, high-speed stirring is carried out for 5 min, and 400 parts by mass of water is added for emulsification, and high-speed dispersion is carried out at 1200 RPM for 20 minutes to obtain an aqueous organic resin emulsion.

[0074] At a stirring rate of 750 RPM, the above-mentioned modified inorganic resin solution and organic resin solution are mixed according to the mass ratio of the net content of inorganic resin to the net content of organic resin of 0.8:1.

[0075] During mixing, the specific operation is to slowly add the modified inorganic resin solution to the organic epoxy resin to form a stable dispersion.

[0076] At a stirring rate of 750 RPM, 50 parts of hydroxyapatite filler, 200 parts of metakaolin, and 2 parts of KH560 are gradually added to the dispersion to form a medium-viscosity colloid of 600 - 1200 CPs.

[0077] The above is alternately leveled on the decorative base film, and two layers of 250G / M 2 alkali-free fiberglass cloth is evenly sprayed with 1 part of sodium polyacrylate coagulant by a spraying machine, and is mixed evenly under a continuous rolling equipment. Then the above materials are transported to a hot air oven at 60 °C, with a traveling speed of 1.5 M / min and baked for 80 min to fully cure the inorganic resin and organic resin to reach the cutting strength.

[0078] Example 3

[0079] In this embodiment, the A-level flame-retardant FRP decorative board is prepared by the method of the present invention, and the modified inorganic resin solution used is the same as that in Example 1.

[0080] The following are the other specific preparation steps:

[0081] In this embodiment, a polyether polyol resin with a molecular weight of 1000 is used to prepare an aqueous organic resin solution, and a blocked isocyanate curing agent is used as the curing agent. The specific preparation process is as follows: 100 parts of polyether polyol resin and 25 parts of blocked isocyanate curing agent are mixed, and high-speed stirring is carried out at room temperature for 5 min, and 200 parts of water is added to obtain a premixed resin with a solid content of 38%.

[0082] At a stirring rate of 800 RPM, the two are mixed according to the mass ratio of the net content of inorganic resin to the net content of organic resin of 0.3:1.

[0083] During mixing, the specific operation is to slowly add the modified inorganic resin solution into the aqueous organic resin solution to form a stable dispersion.

[0084] 50 parts of hydroxyapatite filler, 200 parts of metakaolin and 3 parts of KH570 were gradually added to the dispersion to form a medium-viscosity colloid of 1000-1500 CPs.

[0085] Flow the colloid on the flat mold and lay two layers of 300G / M 2 For alkali-free glass fiber cloth, spray 1 part sodium polyacrylate coagulant evenly with a sprayer and mix it evenly with a continuous roller press. Then, transport the above materials to a hot air oven with a low temperature of 50 degrees and a high temperature of 90 degrees Celsius, at a speed of 2m / min, and bake for 60 minutes to fully cure the inorganic resin and organic resin and achieve cutting strength.

[0086] Comparative Example 1

[0087] The fiberglass decorative board produced by organic resin 196# has a basic resin ratio of 196# resin: accelerator: curing agent MEKPO = 100: 1~2: 2~4. The resin contains about 40% aluminum hydroxide filler. After two layers of 250g / M 2 The fiber cloth is roller-impregnated and cured in an oven at 40 to 90 degrees at a speed of 2 to 4 meters per minute. The surface Barcol hardness reaches 40, Mohs hardness 3, tensile strength reaches 99.38Mpa, oxygen index 28, and flame retardant grade B2.

[0088] Comparative Example 2

[0089] This comparative example uses magnesium oxychloride cement material to prepare inorganic glass fiber reinforced plastics, and the specific preparation process is as follows:

[0090] (1) Raw material selection and processing: Select light-burned magnesium oxide (active content ≥ 65%) and industrial grade magnesium chloride, dissolve and mix to the appropriate concentration (20-30° magnesium degree). Ingredient calculation: The molar ratio of magnesium oxide to magnesium chloride is usually 5.5:1.

[0091] (2) Dissolve magnesium chloride: Dissolve MgCl2 in water, stir until completely dissolved, and check the magnesium content to be 20-30. Slowly add MgO to the magnesium chloride solution and stir at high speed for 5 minutes until a uniform slurry is obtained.

[0092] (3) The molding method uses cast plate, laying two layers of 250g / M 2 After forming, leave the alkali-free glass fiber for 24 hours and cover it with film to maintain humidity. Then, keep it in a cool place at room temperature for 7 days to avoid direct sunlight or strong wind to lose water.

[0093] After testing, the inorganic fiberglass of this comparative example has a tensile strength of 68.26 MPa, a flexural strength of 11.68 MPa, and a Mohs hardness of 4.

[0094] The strength and flame retardancy of the Class A flame-retardant FRP decorative plates prepared in the above embodiments were respectively tested, and the test results are shown in Table 1.

[0095] Table 1 Strength and flame retardant properties of each embodiment and comparative example

[0096]

[0097]

[0098] From the above comparison, it can be seen that the Class A flame-retardant FRP decorative plates of the present invention have both good strength and flame retardancy, and can realize continuous production, greatly improving the production efficiency.

[0099] In the description of the present invention, it should be noted that the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0100] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A continuous production method of A-level flame-retardant fiberglass decorative plates, characterized in that, The raw materials of the sheet include a modified inorganic resin solution, an aqueous organic resin solution, an active filler, a fiber cloth, and a coagulant accelerator. The continuous production method includes the following steps: S1. Mix and stir the modified inorganic resin solution and the aqueous organic resin solution to obtain a dispersion; S2. Add the active filler to the dispersion to obtain a colloid; S3. Level and lay the colloid on a mold, lay the fiber cloth thereon, and then spray the coagulant accelerator to obtain a sheet precursor system; S4. Continuously roll press, bake, and cure the sheet precursor system to obtain the Class A fire-retardant FRP decorative sheet.

2. The continuous production method of a Class A fire-retardant fiberglass reinforced plastic decorative board according to claim 1, characterized in that, The modified inorganic resin solution is prepared from an inorganic resin, a silane coupling agent, trihydroxypropane, and water. The inorganic resin is one or more of silica sol and silicate; the solid mass percentage in the modified inorganic resin solution is 25%-35%.

3. The continuous production method of a Class A flame-retardant FRP decorative sheet according to claim 2, characterized in that, The solid mass percentage in the aqueous organic resin solution is 30%-40%; the organic resin in the aqueous organic resin solution is one of unsaturated polyester resin, epoxy resin, polyurethane resin, acrylic resin, and vinyl resin; the preparation method of the aqueous organic resin solution is: When the organic resin is one of unsaturated polyester resin, vinyl resin, and acrylic resin, first mix the organic resin and the curing agent, then emulsify the mixture with a special emulsifier SSF2-75, and then dilute with water; When the organic resin is epoxy resin, mix the epoxy resin with an aqueous epoxy resin curing agent, stir evenly, and emulsify with water; When the organic resin is polyurethane resin, mix polyether polyol with an HDI trimer curing agent and heat react, and then mix with water.

4. The continuous production method of a Class A flame-retardant FRP decorative sheet according to claim 3, characterized in that, In the dispersion, the mass ratio of the inorganic resin to the organic resin is 0.3-1:

1.

5. A continuous production method of a Class A flame-retardant FRP decorative board according to any one of claims 1-4, characterized in that, The components of the active filler include metakaolin and hydroxyapatite. The fiber cloth is a glass fiber cloth; based on the mass of the raw materials being 100%, the mass percentage of the active filler is 30%-50%, the mass percentage of the fiber cloth is 10%-20%, and the mass percentage of the coagulant accelerator is 0.5%-2%.

6. A continuous production method of a Class A fire-retardant fiberglass reinforced plastic decorative board according to any one of claims 1-4, characterized in that, In step S2, the viscosity of the colloid is 600-1500 CPs.

7. A continuous production method of a Class A flame-retardant fiberglass reinforced plastic decorative board according to any one of claims 1-4, characterized in that, In step S4, the pressure of the continuous roll pressing is 30-100 KPa, and the speed is 1-2 m / min.

8. A continuous production method of a Class A flame-retardant FRP decorative board according to any one of claims 1-4, characterized in that, In step S4, move the sheet precursor system in a baking device at a speed of 1-2 m / min and conduct the baking; the baking temperature is 40-90 °C, and the baking time is 60-90 min.

9. A Class A fire-retardant FRP decorative board, characterized in that, Prepared by using the continuous production method according to any one of claims 1-8.

10. A Class A fire-retardant FRP decorative sheet according to claim 9, characterized in that, The thickness of the sheet is 0.5-6 mm, the specific gravity is 1.8-2.2, the tensile strength is greater than 80 MPa, the bending strength is greater than 40 MPa, and the Mohs hardness is 5-6H.

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