High-brightness heat-resistant ABS (Acrylonitrile Butadiene Styrene) plate and preparation method and application thereof

Abstract

The invention relates to the field of building materials, in particular to a high-brightness heat-resistant ABS plate as well as a preparation method and application thereof. The high-brightness heat-resistant ABS plate is prepared from the following raw materials: ABS resin, copolymer resin, a functional composition, a filling material, a dispersing agent, an antioxidant and the like. According to the present invention, the finally prepared ABS plate can maintain excellent mechanical properties, and can maintain excellent high brightness and high heat resistance during the long-term application process, such that the problem that the surface gloss and the high temperature resistance cannot be effectively considered due to the raw material composition problem of the existing functional ABS plate can be avoided; meanwhile, the properties such as damp and heat resistance and mechanical strength of the ABS plate can be effectively improved, the comprehensive performance requirements of the existing field on the ABS plate are met, and the ABS plate has wider application potential.

Description

Technical Field

[0001] The present application relates to the field of building materials, and more specifically to a high-brightness and heat-resistant ABS board, a preparation method thereof, and applications thereof. Background Art

[0002] ABS (Acrylonitrile-Butadiene-Styrene) board is a thermoplastic polymer material, which is copolymerized by three monomers: acrylonitrile (chemical resistance and rigidity), butadiene (impact toughness) and styrene (surface finish and processability). It has excellent comprehensive performance, high impact resistance, chemical corrosion resistance, easy processing and good surface gloss, and is widely used in industrial manufacturing and construction. Traditional ABS sheets have been maturely applied in the fields of automotive interiors, electronic equipment casings, household appliances, etc., but their heat resistance and surface gloss stability under long-term use are still limited, which restricts their application in high temperature and high light requirements.

[0003] For example, in the field of vehicle accessories, ABS boards are often used in car dashboards, door panels, grilles and other parts, which need to be both aesthetically pleasing and weather-resistant. The existing technology improves heat resistance by adding fillers (such as glass fiber) or surface spraying technology, but it is easy to increase the material density and increase the difficulty of processing, and the spray layer is easy to wear and fall off, affecting the long-term gloss retention. In the field of ships and aircraft, ship cabin partitions and aircraft interior decoration parts require lightweight, flame retardant and moisture-resistant materials. The existing technology uses flame retardants (such as halogen or phosphorus) to modify ABS, but flame retardants are easy to migrate and precipitate, resulting in a decrease in surface gloss and prone to warping and deformation in long-term high temperature environments. In the field of composite wall materials, ABS boards are used as lightweight core materials for building walls and need to have heat insulation and sound insulation properties. The existing technology improves functionality through foaming processes or multi-layer composite structures, but the mechanical strength of foamed ABS is significantly reduced, and it is difficult to achieve a high-gloss decorative effect on the surface, limiting its application in high-end buildings. Summary of the invention

[0004] Therefore, in order to effectively solve the existing technical problems of gloss, high temperature resistance, mechanics, waterproof and moisture resistance of the above-mentioned ABS sheet, the present application provides a high-gloss and heat-resistant ABS sheet and a preparation method thereof. The ABS sheet finally prepared by the present application can not only maintain excellent mechanical properties, but also maintain excellent high gloss performance and high heat resistance in the long-term application process, avoiding the problem that the surface gloss and high temperature resistance of the existing functional ABS sheet cannot be effectively taken into account due to the composition of raw materials, and at the same time, it can effectively improve its moisture and heat resistance and mechanical strength and other aspects of performance, meet the comprehensive performance requirements of the existing field for ABS sheet, and have a wider application potential.

[0005] The high-brightness and heat-resistant ABS board is composed of the following components, calculated by mass: 80-110 parts of ABS resin, 15-30 parts of copolymer resin, 6-15 parts of functional composition, 10-20 parts of filler, 2-8 parts of dispersant, 0.3-1 part of antioxidant, 0.2-0.8 part of light stabilizer, 0.5-1.5 parts of lubricant, 0.8-1.4 parts of nucleating agent and 1-2 parts of antistatic agent.

[0006] As a preferred embodiment, the mass ratio of the ABS resin, the copolymer resin and the functional composition is (90-100): (20-25): (8-12).

[0007] As a preferred embodiment, the mass ratio of the ABS resin, the copolymer resin and the functional composition is (92-96): (21-23): (9-11).

[0008] As a preferred embodiment, the mass ratio of the ABS resin, the filler and the dispersant is (90-100): (12-16): (3-5).

[0009] As a preferred embodiment, the mass ratio of the ABS resin, filler and dispersant is (92-96): (13-15): (3.5-4.5).

[0010] As a preferred embodiment, the melt index of the ABS resin is 1.5-1.7 g / 10 min, 220° C. / 10 kg.

[0011] As a preferred embodiment, the preparation method of the copolymer resin specifically includes the following steps: S1: vinyl carbazole, hexafluorobutyl acrylate and ethyl isocyanate methacrylate are mixed and dissolved in tetrahydrofuran to obtain a monomer mixture; S2: azobisisoheptanenitrile is added to the monomer mixture, and the temperature is raised to 65-75°C, and the reaction is kept warm for 8-10 hours under nitrogen protection; S3: after the reaction is completed, the product is precipitated in methanol, filtered and vacuum dried at 60-70°C for 16-18 hours, and the product is obtained after completion.

[0012] As a preferred embodiment, the mass ratio of vinyl carbazole, hexafluorobutyl acrylate and ethyl isocyanate methacrylate is (4.5-5): (3.5-4): (1.5-2).

[0013] As a preferred embodiment, the mass ratio of vinyl carbazole, hexafluorobutyl acrylate and ethyl isocyanate methacrylate is 4.5:3.5:2.

[0014] By adding copolymer resin to ABS resin, the surface gloss and high temperature resistance of ABS sheet are greatly improved, and its waterproof, moisture-resistant and mechanical strength are guaranteed. The conjugated π electron structure of the carbazole ring introduced in the copolymer resin forms intramolecular hydrogen bonds, restricts the movement of chain segments, and improves the overall resistance of the system to molecular chain slippage while increasing the glass transition temperature, which can greatly improve the resistance of the sheet under external impact; and the groups it contains can cross-link with the C=C double bond of butadiene in ABS to form a three-dimensional cross-linked network, inhibit high temperature creep, and improve the interfacial bonding strength between the resin matrix and the filler and additives, and reduce phase separation; finally, the fluorocarbon segments it contains migrate and accumulate on the surface of the material through strong polarity during processing, reducing surface energy, smoothing the plane while reducing light scattering and increasing the penetration resistance of water molecules, reducing the diffusion path, and thus improving the overall performance of ABS sheet.

[0015] As a preferred embodiment, the functional composition is a composition of polyphenylene sulfide, polyvinylidene fluoride and melamine cyanurate.

[0016] As a preferred embodiment, the mass ratio of polyphenylene sulfide, polyvinylidene fluoride and melamine cyanurate is (4-6): (2.5-3.5): (1.5-2.2).

[0017] As a preferred embodiment, the mass ratio of polyphenylene sulfide, polyvinylidene fluoride and melamine cyanurate is (5-5.5): (2.5-3): (1.8-2).

[0018] As a preferred implementation, the filler is modified nano-alumina.

[0019] As a preferred embodiment, the preparation method of the modified nano-alumina specifically includes the following steps: S1: mixing nano-alumina, styrene and hexafluorobutyl acrylate and ultrasonically dispersing them for 30 to 40 minutes to obtain a uniform slurry; S2: adding deionized water to the slurry, mixing evenly, adding sodium dodecyl sulfate and ammonium persulfate, heating to 75 to 80°C, and keeping the reaction at 600 to 800 rpm under nitrogen protection for 4 to 6 hours. After completion, filtering and removing the product, and vacuum drying it at 65 to 70°C for 8 to 10 hours, the product is obtained after completion.

[0020] As a preferred embodiment, the mass ratio of the nano-aluminum oxide, styrene and hexafluorobutyl acrylate is (3-3.5): (7-8): (2-3).

[0021] As a preferred embodiment, the average particle size of the nano-alumina is 50 to 100 nm.

[0022] As a preferred embodiment, the dispersant is at least one of polyether-modified polysiloxane, hyperbranched polyester amine, alkylphenol polyoxyethylene ether and phosphate ester.

[0023] As a preferred embodiment, the dispersant is polyether-modified polysiloxane.

[0024] As a preferred embodiment, the antioxidant is at least one of antioxidant 1010, antioxidant 1076, antioxidant 1098, antioxidant 3114 and antioxidant 1098.

[0025] As a preferred embodiment, the antioxidant is antioxidant 1098.

[0026] As a preferred embodiment, the light stabilizer is Tinuvin 123 or Uvinul3035.

[0027] As a preferred embodiment, the light stabilizer is Tinuvin 123.

[0028] As a preferred embodiment, the lubricant is at least one of ethylene bisstearamide, oxidized polyethylene wax, erucic acid amide, pentaerythritol tetrastearate and polypropylene wax.

[0029] As a preferred embodiment, the lubricant is ethylene bisstearamide.

[0030] As a preferred embodiment, the nucleating agent is at least one of sorbitol, talc, calcium hydrogen phosphate and aluminum benzoate.

[0031] As a preferred embodiment, the nucleating agent is calcium hydrogen phosphate or aluminum benzoate.

[0032] As a preferred embodiment, the antistatic agent is ethoxylated coconut amine,

[0033] At least one of polyetheresteramide and quaternary ammonium salts.

[0034] As a preferred embodiment, the antistatic agent is ethoxylated coconut amine.

[0035] The preparation method of a high-brightness heat-resistant ABS board specifically comprises the following steps: S1: mixing all raw materials in a high-speed mixer, heating to 80-90°C and stirring and mixing at a rotation speed of 1000-1200rpm for 30-40min; S2: after mixing, using a twin-screw extruder to extrude the mixture, the temperature zones are divided into zone one 175-180°C, zone two 190-195°C, zone three 205-210°C, zone four 195-200°C and die head 185-190°C, the screw speed is 220-280rpm, and vacuum devolatilization is performed at -0.09MPa to -0.08MPa; S3: rolling the product melt through a mirror roller at 100-105°C, cutting into plates after cooling, and controlling the surface roughness Ra≤0.05μm to obtain the plate.

[0036] The present application further defines the application of the high-brightness and heat-resistant ABS board prepared above in the field of vehicle accessories, ship and aircraft accessories, and composite wall materials.

[0037] The beneficial effects of this application are:

[0038] 1. The high-gloss and heat-resistant ABS board provided in the present application can not only maintain excellent mechanical properties, but also maintain excellent high-gloss performance and high-heat resistance during long-term application, avoiding the problem that the surface glossiness and high-temperature resistance of the existing functional ABS board cannot be effectively taken into account due to the composition of raw materials, and at the same time can effectively improve its moisture and heat resistance and mechanical strength and other performances, meet the comprehensive performance requirements of the existing field for ABS boards, and have a wider application potential.

[0039] 2. A high-brightness and heat-resistant ABS board provided in the present application limits the movement of chain segments by adding copolymer resin to ABS resin, thereby increasing the glass transition temperature and the overall resistance of the system to molecular chain slippage. The board resistance can be greatly improved under the impact of external forces, and a cross-linking reaction can also occur to form a three-dimensional cross-linking network, inhibit high-temperature creep, and improve the interfacial bonding strength between the resin matrix and the filler and additives, reducing the phase separation phenomenon; finally, the fluorocarbon segments contained therein migrate and accumulate on the surface of the material through strong polarity during the processing process, thereby reducing the surface energy, smoothing the plane while reducing light scattering and increasing the penetration resistance of water molecules, reducing the diffusion path, and thereby improving the overall performance of the ABS board.

[0040] 3. The high-gloss and heat-resistant ABS board provided in the present application, the added functional composition and filler work together with the resin system, can provide a high-temperature resistant skeleton while helping to improve the barrier effect for water molecules, and improve the internal cross-linking strength, and enhance the interfacial bonding strength through interfacial action, thereby helping to promote the improvement of the comprehensive performance of the ABS board. DETAILED DESCRIPTION

[0041] The specific implementation examples will be used to more intuitively demonstrate and illustrate the contents of the invention content of this application. The following embodiments are only practical examples used to illustrate and explain the contents of the technical solutions in the specification and should not limit the scope of the claims to be protected by this application.

[0042] Example 1

[0043] The high-brightness and heat-resistant ABS board is composed of the following components, calculated by mass: 95.8 parts of ABS resin, 22.2 parts of copolymer resin, 9.5 parts of functional composition, 13.5 parts of filler, 4.2 parts of dispersant, 0.6 parts of antioxidant, 0.5 parts of light stabilizer, 1.2 parts of lubricant, 0.9 parts of nucleating agent, and 1.4 parts of antistatic agent.

[0044] The ABS resin has a melt index of 1.5 to 1.7 g / 10 min, 220° C. / 10 kg, and is purchased from Chi Mei Industrial Co., Ltd. in Taiwan, China, and is a Chi Mei PA-757 product.

[0045] The preparation method of the copolymer resin specifically comprises the following steps, based on parts by mass: S1: 4.5 parts of vinyl carbazole, 3.5 parts of hexafluorobutyl acrylate and 2 parts of ethyl isocyanate methacrylate are mixed and dissolved in 60 parts of tetrahydrofuran to obtain a monomer mixture; S2: 0.46 parts of azobisisoheptanenitrile are added to the monomer mixture, and the temperature is raised to 70°C, and the reaction is kept warm for 8.5 hours under nitrogen protection; S3: after the reaction is completed, the product is precipitated in methanol, filtered and vacuum dried at 65°C for 18 hours, and the product is obtained after completion.

[0046] The functional composition is a composition of polyphenylene sulfide, polyvinylidene fluoride and melamine cyanurate, with a mass ratio of 5.2:2.8:2; melamine cyanurate was purchased from the Melapur MC25 model product sold by BASF of Germany; polyphenylene sulfide was purchased from the Fortron 1140A model product sold by Polyplastics of Japan; and polyvinylidene fluoride was purchased from the injection molding grade product sold by Baojia Plastic Co., Ltd. of Dongguan City, China.

[0047] The filler is modified nano-alumina, and its preparation method is based on mass parts, and specifically includes the following steps: S1: 3.2 parts of nano-alumina, 7.2 parts of styrene and 2.6 parts of hexafluorobutyl acrylate are mixed and ultrasonically dispersed for 35 minutes to obtain a uniform slurry; S2: 80 parts of deionized water are added to the slurry, and after mixing evenly, 0.8 parts of sodium dodecyl sulfate and 0.36 parts of ammonium persulfate are added, the temperature is raised to 80°C, and the speed is 600rpm under nitrogen protection for insulation reaction for 5 hours. After completion, the product is filtered out and vacuum dried at 70°C for 8 hours. After completion, the product is obtained.

[0048] The average particle size of nano-alumina is 60nm.

[0049] The dispersant is polyether modified polysiloxane BYK-2155; the antioxidant is antioxidant 1098; the light stabilizer is Tinuvin 123; the lubricant is ethylene bis stearamide; the nucleating agent is calcium hydrogen phosphate; and the antistatic agent is ethoxylated coconut amine.

[0050] The preparation method of a high-brightness and heat-resistant ABS board specifically includes the following steps: S1: mixing all raw materials in a high-speed mixer, heating to 85°C and stirring and mixing at a speed of 1000rpm for 40min; S2: after mixing, using a twin-screw extruder to extrude the mixture, the temperature zones are divided into zone one 175°C, zone two 190°C, zone three 210°C, zone four 200°C and die head 190°C, the screw speed is 260rpm, and vacuum devolatilization at -0.09MPa; S3: calendering the product melt at 105°C through a mirror roller, cutting into plates after cooling, and controlling the surface roughness Ra≤0.05μm to obtain the plate.

[0051] Example 2

[0052] The only difference between this embodiment and Embodiment 1 is that the high-brightness and heat-resistant ABS board is composed of the following components, measured by mass: 100 parts of ABS resin, 20.5 parts of copolymer resin, 8.2 parts of functional composition, 12.5 parts of filler, 3.8 parts of dispersant, 0.6 parts of antioxidant, 0.5 parts of light stabilizer, 1.2 parts of lubricant, 0.9 parts of nucleating agent, and 1.4 parts of antistatic agent.

[0053] Example 3

[0054] The only difference between this embodiment and Embodiment 1 is that the high-brightness and heat-resistant ABS board is composed of the following components, by mass: 90 parts of ABS resin, 25 parts of copolymer resin, 11.5 parts of functional composition, 15 parts of filler, 4.5 parts of dispersant, 0.6 parts of antioxidant, 0.5 parts of light stabilizer, 1.2 parts of lubricant, 0.9 parts of nucleating agent, and 1.4 parts of antistatic agent.

[0055] Comparative Example 1

[0056] The only difference between this comparative example and Example 1 is that the high-brightness and heat-resistant ABS board is composed of the following components, by mass: 120.5 parts of ABS resin, 9.5 parts of copolymer resin, 13.5 parts of functional composition, 13.5 parts of filler, 4.2 parts of dispersant, 0.6 parts of antioxidant, 0.5 parts of light stabilizer, 1.2 parts of lubricant, 0.9 parts of nucleating agent, and 1.4 parts of antistatic agent.

[0057] Comparative Example 2

[0058] The only difference between this comparative example and Example 1 is that the high-brightness and heat-resistant ABS board is composed of the following components, by mass: 115 parts of ABS resin, 25 parts of copolymer resin, 2.5 parts of functional composition, 13.5 parts of filler, 4.2 parts of dispersant, 0.6 parts of antioxidant, 0.5 parts of light stabilizer, 1.2 parts of lubricant, 0.9 parts of nucleating agent, and 1.4 parts of antistatic agent.

[0059] Comparative Example 3

[0060] The only difference between this comparative example and Example 1 is as follows: the preparation method of the copolymer resin, calculated by mass, specifically comprises the following steps: S1: 6.5 parts of vinyl carbazole, 4 parts of hexafluorobutyl acrylate and 0.5 parts of ethyl isocyanate methacrylate are mixed and dissolved in 60 parts of tetrahydrofuran to obtain a monomer mixture; S2: 0.46 parts of azobisisoheptanenitrile are added to the monomer mixture, and the temperature is raised to 70°C, and the reaction is kept warm for 8.5 hours under nitrogen protection; S3: after the reaction is completed, the product is precipitated in methanol, filtered and vacuum dried at 65°C for 18 hours, and the product is obtained after completion.

[0061] Comparative Example 4

[0062] The only difference between this comparative example and Example 1 is as follows: the preparation method of the copolymer resin, calculated by mass, specifically comprises the following steps: S1: 6.5 parts of vinyl carbazole, 1 part of hexafluorobutyl acrylate and 4 parts of ethyl isocyanate methacrylate are mixed and dissolved in 60 parts of tetrahydrofuran to obtain a monomer mixture; S2: 0.46 parts of azobisisoheptanenitrile are added to the monomer mixture, and the temperature is raised to 70°C, and the reaction is kept warm for 8.5 hours under nitrogen protection; S3: after the reaction is completed, the product is precipitated in methanol, filtered and vacuum dried at 65°C for 18 hours, and the product is obtained after completion.

[0063] Comparative Example 5

[0064] The only difference between this comparative example and Example 1 is that the functional composition is a composition of polyphenylene sulfide, polyvinylidene fluoride and melamine cyanurate, and the mass ratio is 1.5:3:1.

[0065] Comparative Example 6

[0066] The only difference between this comparative example and Example 1 is that the filler is modified nano-alumina, and its preparation method, measured by mass, specifically comprises the following steps: S1: 5.5 parts of nano-alumina, 4.5 parts of styrene and 1.2 parts of hexafluorobutyl acrylate are mixed and ultrasonically dispersed for 35 minutes to obtain a uniform slurry; S2: 80 parts of deionized water are added to the slurry, and after mixing evenly, 0.4 parts of sodium dodecyl sulfate and 0.21 parts of ammonium persulfate are added, the temperature is raised to 80°C, and the speed is 600 rpm under nitrogen protection for reaction for 5 hours. After completion, the product is filtered out and vacuum dried at 70°C for 8 hours. After completion, the product is obtained.

[0067] Performance Evaluation

[0068] 1. The glossiness of the ABS sheets prepared in the examples and comparative examples was tested according to the ASTM D523 standard. The average of 10 test results was recorded in Table 1.

[0069] 2. The heat resistance of the ABS sheets prepared in the examples and comparative examples was tested according to the ASTM D648 standard. The average of 10 test results was recorded in Table 1.

[0070] 3. The water absorption rate of the ABS sheets prepared in the examples and comparative examples was tested according to standard ISO 62, and the average of 10 test results was recorded in Table 1.

[0071] 4. The notched impact strength of the ABS sheets prepared in the examples and comparative examples was tested according to standard ISO 179-1, and the average of 10 test results was recorded in Table 1.

[0072] Table 1 Performance evaluation results

[0073]

[0074] From the final performance test results of the embodiments and comparative examples, comparative examples 1 to 6 achieved worse performance results than the embodiments, while the embodiments, through a more preferred technical solution, promoted the combined effect of the added functional composition and filler with the resin system, which can help improve the barrier effect for water molecules while providing a high temperature resistant skeleton, and improve the internal cross-linking strength, and enhance the interfacial bonding force through interfacial action, thereby helping to improve the comprehensive performance of the ABS sheet.

Claims

1. A high-brightness and heat-resistant ABS board, characterized by: The invention is composed of the following components by weight: 80-110 parts of ABS resin, 15-30 parts of copolymer resin, 6-15 parts of functional composition, 10-20 parts of filler, 2-8 parts of dispersant, 0.3-1 parts of antioxidant, 0.2-0.8 parts of light stabilizer, 0.5-1.5 parts of lubricant, 0.8-1.4 parts of nucleating agent and 1-2 parts of antistatic agent; The melt index of the ABS resin is 1.5-1.7 g / 10 min, 220° C. / 10 kg; The preparation method of the copolymer resin comprises the following steps: S1: dissolving vinyl carbazole, hexafluorobutyl acrylate and ethyl isocyanate methacrylate in tetrahydrofuran to obtain a monomer mixture; S2: adding azobisisoheptanenitrile to the monomer mixture, heating the mixture to 65-75° C., and keeping the mixture warm for 8-10 hours under nitrogen protection; S3: after the reaction is completed, precipitating the product in methanol, filtering it, and vacuum drying it at 60-70° C. for 16-18 hours, and obtaining the copolymer resin after completion; The mass ratio of the vinyl carbazole, hexafluorobutyl acrylate and ethyl isocyanate methacrylate is (4.5-5): (3.5-4): (1.5-2).

2. The high-brightness and heat-resistant ABS board according to claim 1, characterized in that: The mass ratio of the ABS resin, the copolymer resin and the functional composition is (90-100):(20-25):(8-12).

3. The high-brightness and heat-resistant ABS board according to claim 2 is characterized in that: The mass ratio of the ABS resin, filler and dispersant is (90-100):(12-16):(3-5).

4. The high-brightness and heat-resistant ABS board according to claim 3 is characterized in that: The functional composition is a composition of polyphenylene sulfide, polyvinylidene fluoride and melamine cyanurate, and the mass ratio is (4-6): (2.5-3.5): (1.5-2.2).

5. The high-brightness heat-resistant ABS board according to claim 4, characterized in that: The filler is modified nano-alumina; the preparation method of the modified nano-alumina specifically includes the following steps: S1: mixing nano-alumina, styrene and hexafluorobutyl acrylate and ultrasonically dispersing them for 30 to 40 minutes to obtain a uniform slurry; S2: adding deionized water to the slurry, mixing evenly, adding sodium dodecyl sulfate and ammonium persulfate, heating to 75 to 80°C, keeping the temperature at 600 to 800 rpm under nitrogen protection for 4 to 6 hours, filtering and taking out the product after completion, and vacuum drying at 65 to 70°C for 8 to 10 hours, and obtaining the product after completion.

6. The high-brightness and heat-resistant ABS board according to claim 5, characterized in that: The mass ratio of the nano-aluminum oxide, styrene and hexafluorobutyl acrylate is (3-3.5): (7-8): (2-3).

7. The high-brightness and heat-resistant ABS board according to claim 6, characterized in that: The average particle size of the nano-alumina is 50-100 nm.

8. The high-brightness and heat-resistant ABS board according to claim 7, characterized in that: The dispersant is at least one of polyether-modified polysiloxane, hyperbranched polyester amine, alkylphenol polyoxyethylene ether and phosphate ester.

9. A method for preparing a high-brightness and heat-resistant ABS board according to any one of claims 1 to 8, characterized in that: The specific steps include: S1: Mix all the raw materials in a high-speed mixer, heat to 80-90°C and stir and mix at a speed of 1000-1200rpm for 30-40min; S2: After mixing, extrude the mixture using a twin-screw extruder, the temperature zones are divided into zone 1 175-180°C, zone 2 190-195°C, zone 3 205-210°C, zone 4 195-200°C and die head 185-190°C, screw speed 220-280rpm, -0.09MPa--0.08MPa vacuum devolatilization; S3: Roll the product melt through a mirror roller at 100-105°C, cut into plates after cooling, and control the surface roughness Ra≤0.05μm to obtain.

10. Use of the high-brightness and heat-resistant ABS board according to any one of claims 1 to 8 in the fields of vehicle accessories, ship and aircraft accessories, and composite wall materials.

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