Flame-retardant ABS (Acrylonitrile Butadiene Styrene) composition and preparation method and application thereof

Abstract

The invention discloses a flame-retardant ABS (Acrylonitrile Butadiene Styrene) composition as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The flame-retardant ABS composition provided by the invention comprises the following components in parts by mass: 50-80 parts of ABS resin; 8 to 12 parts of styrene-acrylonitrile copolymer; 3 to 5 parts of styrene-acrylonitrile-maleic anhydride terpolymer; 2 to 6 parts of a fluorine-containing maleimide copolymer; 5 to 15 parts of graphite nanosheet modified high rubber powder; 12 to 18 parts of brominated flame retardant; 3-7 parts of a phosphorus-based flame retardant; 0.1-1 part of a processing aid; the phosphorus-based flame retardant is prepared from the following components in parts by mass: 80 to 95 parts of diethyl phosphinate; 0.3 to 3 parts of ethyl butyl phosphinate; 0.1 to 2 parts of ethyl phosphonate; and 5 to 20 parts of melamine polyphosphate. The flame-retardant ABS composition prepared by the invention is good in flame retardant property, good in welding strength and low in cost.

Description

Technical Field

[0001] This invention relates to the field of polymer materials technology, specifically to a flame-retardant ABS composition, its preparation method, and its application. Background Technology

[0002] ABS resin is a copolymer of styrene, butadiene, and acrylonitrile. ABS resin contains a polybutadiene phase with good toughness and impact strength. However, due to the presence of substituted tertiary carbon atoms in the polybutadiene phase, ABS resin is highly flammable, as oxygen readily abstracts hydrogen from butadiene, initiating oxidation. Ordinary ABS resin cannot achieve fire resistance and requires flame retardant modification.

[0003] The conventional method of using brominated flame retardants and antimony trioxide as a synergistic flame retardant can achieve flame retardancy in ABS materials. However, the price of antimony trioxide has remained high in recent years (150-230 RMB / kg), significantly increasing the cost of flame retardancy for ABS. Furthermore, the addition of flame retardants usually leads to a decrease in the weld strength of ABS materials. In products requiring multi-part welding, this can result in poor weld strength and the risk of cracking. For example, ABS materials are increasingly used in energy storage batteries, where the top and bottom shells are made of ABS materials through separate injection molding and then welded together. Ensuring sufficient weld strength to prevent cracking requires careful consideration of weld strength. Existing technologies utilize a combination of ABS resin within a certain melt index range, composite high-rubber powder with different average rubber particle sizes, SAN resin with a certain acrylonitrile content, and flame retardants to obtain flame-retardant ABS compositions with good flame retardancy, weld strength, and oil resistance. However, this still relies on the relatively expensive antimony trioxide as a synergistic flame retardant for brominated flame retardants, and also places high demands on raw materials and other additives. Therefore, there is a need to provide an ABS material with good flame retardancy, good weld strength, and low cost. Summary of the Invention

[0004] The purpose of this invention is to provide a flame-retardant ABS composition, its preparation method, and its application, thereby solving the following technical problems: Existing ABS compositions suffer from insufficient flame retardancy, poor weldability, and high cost.

[0005] The objective of this invention can be achieved through the following technical solutions: A flame-retardant ABS composition comprising the following components in parts by weight: 50-80 parts ABS resin; 8-12 parts styrene-acrylonitrile copolymer; 3-5 parts styrene-acrylonitrile-maleic anhydride terpolymer; 2-6 parts fluorinated maleimide copolymer; 5-15 parts graphite nanosheet modified high-resin powder; 12-18 parts bromine-based flame retardant; 3-7 parts phosphorus-based flame retardant; 0.1-1 parts processing aids; The phosphorus-based flame retardant comprises the following components in parts by weight: 80-95 parts of diethylphosphonate; 0.3-3 parts of ethylbutylphosphonate; 0.1-2 parts of ethylphosphonate; 5-20 parts of melamine polyphosphate.

[0006] As a further aspect of the present invention: the particle size D50 of the phosphorus-based flame retardant is 2-10 μm, and the acid value of the phosphorus-based flame retardant is 0.2-0.5 mg KOH / g.

[0007] As a further aspect of the present invention: the diethylphosphonate is one or more metal salts selected from aluminum, zinc, magnesium, iron, calcium, zirconium, nickel, titanium, antimony, and sodium; the ethylbutylphosphonate is one or more metal salts selected from aluminum, zinc, magnesium, iron, calcium, zirconium, nickel, titanium, antimony, and sodium; and the ethylphosphonate is one or more metal salts selected from aluminum, zinc, magnesium, iron, calcium, zirconium, nickel, titanium, antimony, and sodium.

[0008] As a further aspect of the present invention, the preparation method of the graphite nanosheet modified high-polymer powder includes at least the following steps: High-polymer powder and graphite are mechanically mixed in a ball mill and ball-milled at 400-600 r / min for 10-15 h to obtain graphite nanosheet modified high-polymer powder.

[0009] As a further aspect of the present invention: the mass ratio of the high-polymer powder to the graphite is 1-2:1, and the melt flow index of the high-polymer powder measured at 220℃ and 10kg is 5-50g / 10min.

[0010] As a further aspect of the present invention: the fluorinated maleimide copolymer is obtained by copolymerizing N-(4-fluorophenyl)maleimide and triallyl isocyanurate, wherein the mass ratio of N-(4-fluorophenyl)maleimide to triallyl isocyanurate is 1:0.5-1.

[0011] As a further aspect of the present invention: the acrylonitrile content in the styrene-acrylonitrile copolymer is 30-35 wt%, and the acrylonitrile content in the styrene-acrylonitrile-maleic anhydride terpolymer is 30-35 wt% and the maleic anhydride content is 5-10 wt%.

[0012] As a further aspect of the present invention: the processing aid is at least one of antioxidant, lubricant or anti-dripping agent, and the brominated flame retardant is at least one of decabromodiphenyl ethane, bromotriazine, brominated epoxy resin or tetrabromobisphenol A.

[0013] The preparation method of any of the flame-retardant ABS compositions described above includes the following steps: mixing ABS resin, styrene-acrylonitrile copolymer, styrene-acrylonitrile-maleic anhydride terpolymer, fluorinated maleimide copolymer, graphite nanosheet modified high-resin powder, bromine-based flame retardant, phosphorus-based flame retardant and processing aid, melt extruding, granulating, to obtain the flame-retardant ABS composition.

[0014] Application of flame-retardant ABS compositions as described above in the manufacture of electronic product and energy storage battery casings.

[0015] The beneficial effects of this invention are: The flame-retardant ABS composition prepared by this invention comprises ABS resin, styrene-acrylonitrile copolymer, styrene-acrylonitrile-maleic anhydride terpolymer, fluorinated maleimide copolymer, graphite nanosheet modified high-resin powder, brominated flame retardant, phosphorus-based flame retardant, and processing aids. Each component exhibits good compatibility and dispersibility, maintaining a high flame retardancy rating while improving weld strength and mechanical properties, making it particularly suitable for energy storage battery casings requiring long lifespan and reliability. This invention uses a phosphorus-based flame retardant composition of diethylphosphine, ethylbutylphosphine, ethylphosphine, and melamine polyphosphate to replace antimony trioxide, combined with a brominated flame retardant, achieving highly efficient all-around flame retardancy. The melamine polyphosphate in the compounded phosphorus-based flame retardant produces an expansion synergistic effect with diethylphosphine and other components, forming a dense and robust expanded carbon layer on the material surface. Furthermore, precise control of the particle size and acid value of the phosphorus-based flame retardant significantly reduces costs while maintaining the flame retardancy rating and improving weld strength and oil resistance. The flame-retardant ABS composition prepared by this invention completely eliminates antimony trioxide and adopts an environmentally friendly phosphorus-nitrogen-bromine synergistic system. It has low smoke density during combustion, significantly improves environmental protection, and reduces flame-retardant costs.

[0016] This invention introduces a styrene-acrylonitrile-maleic anhydride terpolymer and a fluorinated maleimide copolymer into the flame-retardant ABS composition. Under high temperature and pressure at the welding interface, the maleic anhydride groups on the styrene-acrylonitrile-maleic anhydride terpolymer chain can undergo in-situ chemical reactions with the ABS resin, the end groups of the styrene-acrylonitrile copolymer, and the fluorinated maleimide copolymer, forming covalent bonds. This elevates the physical entanglement of traditional welding to chemical bonding, significantly improving the welding strength of the flame-retardant ABS composition. Furthermore, the fluorinated maleimide copolymer exhibits good compatibility, effectively inhibiting the migration and precipitation of small molecule additives such as flame retardants, significantly increasing the heat distortion temperature of the material, and ensuring the stability of the product's performance under long-term use or high temperature and humidity environments. The fluorine atoms in the fluorinated maleimide copolymer can form hydrogen bonds with the electrolyte, inhibiting electrolyte penetration and imparting electrolyte resistance. It also plays a role in enhancing flame retardancy, suppressing smoke, modifying electrolyte resistance, and improving heat resistance.

[0017] The high-polymer powder added in this invention is modified with graphite nanosheets. The high-polymer powder is modified with graphite nanosheets, and then pre-composite with the graphite nanosheets using ball milling. The mechanical force of the ball milling helps to better disperse and embed the graphite nanosheets into the high-polymer powder, forming a core-shell or embedded structure. When subsequently blended with ABS resin, the high-polymer powder acts as a carrier, preventing the graphite nanosheets from re-agglomerating, thereby forming a uniformly dispersed thermally conductive network in the matrix. This results in a more uniform distribution of welding heat, avoiding localized overheating and degradation, and further ensuring the integrity of the welding interface. The graphite nanosheet-modified high-polymer powder has both toughening and strengthening functions. The high-polymer powder ensures toughness, while the graphite nanosheets improve rigidity, strength, and impart excellent creep resistance. Furthermore, the network formed by the graphite nanosheets in the high-polymer powder allows for more effective formation of a continuous and dense char layer during combustion, improving flame retardant performance. Detailed Implementation

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: The preparation method of styrene-acrylonitrile-maleic anhydride terpolymer includes the following steps: In a four-necked flask equipped with a reflux condenser, thermometer, and stirrer, 10.4 g of styrene, 5.3 g of acrylonitrile, 9.8 g of maleic anhydride, and 0.05 g of initiator benzoyl peroxide were added in a molar ratio of 10:1:9. The mixture was heated with a heating mantle and the reaction temperature was set to 70 °C for polymerization. The polymer liquid was observed to become viscous. After washing with a small amount of 3% alcohol, post-treatment was carried out at high temperature to obtain a styrene-acrylonitrile-maleic anhydride terpolymer.

[0020] Example 2: The preparation method of fluorinated maleimide copolymers includes the following steps: 3.825 g of N-(4-fluorophenyl)maleimide, 2.989 g of triallyl isocyanurate, 35 mL of xylene, and 0.2 g of benzoyl peroxide were sequentially added to a 250 mL four-necked flask. Nitrogen gas was bubbled through the flask at room temperature to remove oxygen. The mixture was mechanically stirred and reacted at 110 °C for 4 h. The product precipitated at the bottom of the flask. After cooling to room temperature, the mixture was filtered and poured into excess methanol. The mixture was filtered again to remove residual xylene. The product was then dried under vacuum at 60 °C for 14 h to obtain a fluorinated maleimide copolymer.

[0021] Example 3: The preparation method of graphite nanosheet modified high-polymer powder includes the following steps: High-rubber powder (TKA-1, AN content 28%, average rubber particle size 450nm) was mixed with graphite (average particle size 10~15μm, density 2.2g / cm³). 3 The materials were mechanically mixed in a ball mill at a mass ratio of 1:1. The ball mill speed was 500 r / min, the ball-to-material ratio was 20:1, and the ball milling time was 12 h to obtain graphite nanosheet modified high-resin powder.

[0022] Example 4: The preparation method of the flame-retardant ABS composition includes the following steps: A phosphorus-based flame retardant was obtained by mixing aluminum diethylphosphonate (OP935) with a D50 of 3.6 μm, aluminum ethylbutylphosphonate with a D50 of 4.8 μm, aluminum ethylphosphonate with a D50 of 5.4 μm, and melamine polyphosphate (BUDIT 3141) with a D50 of 6 μm in a mass ratio of 89:1:1:9. 70 parts by weight of ABS resin (AE-8000, melt index 7 g / 10 min) and 10 parts by weight of styrene-acrylonitrile copolymer (PN-127, M) were mixed. w=99000, AN mass fraction is 30%, PDI=1.9), 4 parts by mass of the styrene-acrylonitrile-maleic anhydride terpolymer prepared in Example 1, 4 parts by mass of the fluorinated maleimide copolymer prepared in Example 2, 8 parts by mass of the graphite nanosheet modified high-adhesion powder prepared in Example 3, 15 parts by mass of the brominated flame retardant bromotriazine (HS-245, bromine mass fraction is 66%), 5 parts by mass of the above phosphorus-based flame retardant, 0.2 parts by mass of... 0.2 parts by weight of antioxidant 1010, 0.1 parts by weight of zinc stearate, and 0.1 parts by weight of PTFE anti-dripping agent were added to a high-speed mixer and mixed for 5 minutes. The mixture was then fed into a co-rotating twin-screw extruder (length-to-diameter ratio 40:1) for melt blending, extrusion, and granulation. The extruder temperature was set as follows: Zone 1 190℃, Zone 2 200℃, Zone 3 210℃, Zone 4 215℃, Zone 5 215℃, Zone 6 210℃, Zone 7 205℃, Die head 200℃, and screw speed 350 r / min. After extrusion, the mixture was water-cooled, pelletized, and dried to obtain a flame-retardant ABS composition.

[0023] Example 5: The preparation method of the flame-retardant ABS composition includes the following steps: A phosphorus-based flame retardant was obtained by mixing zinc diethylphosphinate (OP950) with a D50 of 4.5 μm, aluminum ethylbutylphosphinate with a D50 of 4.8 μm, aluminum ethylphosphinate with a D50 of 5.4 μm, and melamine polyphosphate (BUDIT 3141) with a D50 of 8 μm in a mass ratio of 89:1:1:9. 65 parts by weight of ABS resin (AE-8000, melt index 7 g / 10 min) and 11 parts by weight of styrene-acrylonitrile copolymer (PN-127, M) were mixed. w =99000, AN mass fraction is 30%, PDI=1.9), 3.5 parts by mass of the styrene-acrylonitrile-maleic anhydride terpolymer prepared in Example 1, 3 parts by mass of the fluorinated maleimide copolymer prepared in Example 2, 10 parts by mass of the graphite nanosheet modified high-adhesion powder prepared in Example 3, 14 parts by mass of the brominated flame retardant brominated epoxy resin (bromine mass fraction is 55%), 4.5 parts by mass of the above phosphorus flame retardant, 0.2 parts by mass 0.2 parts by weight of antioxidant 1010, 0.1 parts by weight of zinc stearate, and 0.1 parts by weight of PTFE anti-dripping agent were added to a high-speed mixer and mixed for 5 minutes. The mixture was then fed into a co-rotating twin-screw extruder (length-to-diameter ratio 40:1) for melt blending, extrusion, and granulation. The extruder temperature was set as follows: Zone 1 190℃, Zone 2 200℃, Zone 3 210℃, Zone 4 215℃, Zone 5 215℃, Zone 6 210℃, Zone 7 205℃, Die head 200℃, and screw speed 350 r / min. After extrusion, the mixture was water-cooled, pelletized, and dried to obtain a flame-retardant ABS composition.

[0024] Compared with Example 4, Comparative Example 1 only did not add the styrene-acrylonitrile-maleic anhydride terpolymer prepared in Example 1; the other components and preparation methods were completely the same as in Example 4.

[0025] Compared with Example 4, Comparative Example 2 only did not add styrene-acrylonitrile copolymer, while the other components and preparation methods were completely the same as those in Example 4.

[0026] Compared with Example 4, Comparative Example 3 only did not add the fluorinated maleimide copolymer prepared in Example 2, while the other components and preparation methods were completely the same as those in Example 4.

[0027] Compared with Example 4, Comparative Example 4 only replaced 8 parts by mass of the graphite nanosheet modified high-polymer powder prepared in Example 3 with 4 parts by mass of the unmodified high-polymer powder in Example 3. The remaining components and preparation methods were completely the same as those in Example 4.

[0028] Compared with Example 4, Comparative Example 5 only replaced 8 parts by mass of the graphite nanosheet modified high-polymer powder prepared in Example 3 with 4 parts by mass of unmodified high-polymer powder and 4 parts by mass of graphite. The remaining components and preparation methods were completely the same as those in Example 4.

[0029] Compared with Example 4, Comparative Example 6 only replaced the phosphorus-based flame retardant prepared in Example 4, which was a mixture of aluminum diethylphosphonate (OP935) with a D50 of 3.6 μm, aluminum ethylbutylphosphonate with a D50 of 4.8 μm, aluminum ethylphosphonate with a D50 of 5.4 μm, and melamine polyphosphate (BUDIT 3141) with a D50 of 6 μm, in a mass ratio of 89:1:1:9, with a single component of aluminum diethylphosphonate (OP935) with a D50 of 3.6 μm. The remaining components and preparation methods were completely consistent with those of Example 4.

[0030] Compared with Example 4, Comparative Example 7 only replaced the phosphorus-based flame retardant prepared in Example 4, which consisted of aluminum diethylphosphonate (OP935) with a D50 of 3.6 μm, aluminum ethylbutylphosphonate with a D50 of 4.8 μm, aluminum ethylphosphonate with a D50 of 5.4 μm, and melamine polyphosphate (BUDIT 3141) with a D50 of 6 μm, in a mass ratio of 89:1:1:9, with antimony dioxide (HC300). The remaining components and preparation methods were completely consistent with those of Example 4.

[0031] Performance testing The flame-retardant ABS compositions obtained in Examples 4-5 and Comparative Examples 1-7 were injection molded into welding plates in a special mold for hot plate welding. The injection temperature was 220°C, the injection speed was 50 g / s, the injection pressure was 60 MPa, and the holding time was 20 s to obtain test samples. Limiting Oxygen Index (LOI) Test: An XZJ-100 oxygen index tester was used, and the test was performed according to ASTM D2863. The sample size was fixed at 100mm × 6.5mm × 3mm. After the instrument reading stabilized, the sample was ignited, and the LOI value was recorded according to the test standard. Due to the instability of the test, 8 samples were taken for each test, and the average value was taken. The test results are shown in Table 1. UL-94 Vertical Burning Test: A horizontal-vertical burner was used, and the test was performed according to ASTM D3801 standard. The sample size was fixed at 100mm × 13mm × 3mm. Due to the instability of the UL-94 rating measured by the burner, 8 samples were tested for each group, and the average value was taken. The test results are shown in Table 1. Mechanical property testing: Tensile properties were tested according to GB / T1040-2006 standard on a computer-controlled electronic universal testing machine at a tensile rate of 50 mm / min, with 5 specimens per group and the average value taken; Notched impact strength was tested according to GB / T1843-2008 standard on a ZBC24B pendulum impact testing machine with a notch of 2 mm and a notch corner radius of 0.25 mm, with 5 specimens per group and the average value taken. All tests were conducted at room temperature; the test results are shown in Table 1. Welding strength test: Two standard injection-molded specimens were butt-welded under ultrasonic welding to prepare welded specimens. Tensile strength was tested according to ISO 527-2019 at a test temperature of -10℃. Due to the extreme instability of mechanical property testing, multiple sets of tests were conducted at different time periods, with 5 specimens tested in each set, and the average value was taken. The test results are shown in Table 1. Table 1: Statistical Table of Performance Test Data of Specimens from Examples 4-5 and Comparative Examples 1-7 As shown in Table 1, the flame-retardant ABS composition prepared by this invention has the following properties: In Comparative Example 1, without the addition of styrene-acrylonitrile-maleic anhydride terpolymer, the weld strength of the obtained flame-retardant ABS composition decreased sharply. In Comparative Example 2, without the addition of styrene-acrylonitrile copolymer, the flame-retardant grade of the obtained flame-retardant ABS composition decreased, and the weld strength and mechanical properties also decreased. In Comparative Example 3, without the addition of fluorinated maleimide copolymer, both the impact strength and weld strength of the obtained flame-retardant ABS composition decreased. In Comparative Example 4, the added high-polymer powder was not modified. In Comparative Example 5, the added graphite and high-polymer powder were not ball-milled, resulting in a decrease in all properties of the obtained flame-retardant ABS composition. In Comparative Example 6, the added phosphorus-based flame retardant was a single phosphate salt, resulting in the worst flame-retardant ABS composition. In Comparative Example 7, antimony dioxide was added to replace the phosphorus-based flame retardant, resulting in the best flame-retardant ABS composition but the lowest weld strength.

[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A flame-retardant ABS composition, characterized in that, The components include the following parts by mass: 50-80 parts ABS resin; 8-12 parts styrene-acrylonitrile copolymer; 3-5 parts styrene-acrylonitrile-maleic anhydride terpolymer; 2-6 parts fluorinated maleimide copolymer; 5-15 parts graphite nanosheet modified high-resin powder; 12-18 parts bromine-based flame retardant; 3-7 parts phosphorus-based flame retardant; 0.1-1 parts processing aids; The phosphorus-based flame retardant comprises the following components in parts by weight: 80-95 parts of diethylphosphonate; 0.3-3 parts of ethylbutylphosphonate; 0.1-2 parts of ethylphosphonate; 5-20 parts of melamine polyphosphate.

2. The flame-retardant ABS composition according to claim 1, characterized in that, The phosphorus-based flame retardant has a particle size D50 of 2-10 μm and an acid value of 0.2-0.5 mg KOH / g.

3. The flame-retardant ABS composition according to claim 1, characterized in that, The diethylphosphonate is one or more metal salts selected from aluminum, zinc, magnesium, iron, calcium, zirconium, nickel, titanium, antimony, and sodium; the ethylbutylphosphonate is one or more metal salts selected from aluminum, zinc, magnesium, iron, calcium, zirconium, nickel, titanium, antimony, and sodium; and the ethylphosphonate is one or more metal salts selected from aluminum, zinc, magnesium, iron, calcium, zirconium, nickel, titanium, antimony, and sodium.

4. The flame-retardant ABS composition according to claim 1, characterized in that, The preparation method of the graphite nanosheet modified high-polymer powder includes at least the following steps: High-polymer powder and graphite are mechanically mixed in a ball mill and ball-milled at 400-600 r / min for 10-15 h to obtain graphite nanosheet modified high-polymer powder.

5. The flame-retardant ABS composition according to claim 1, characterized in that, The mass ratio of the high-polymer powder to the graphite is 1-2:1, and the melt flow index of the high-polymer powder measured at 220℃ and 10kg is 5-50g / 10min.

6. The flame-retardant ABS composition according to claim 1, characterized in that, The fluorinated maleimide copolymer is obtained by copolymerizing N-(4-fluorophenyl)maleimide and triallyl isocyanurate, wherein the mass ratio of N-(4-fluorophenyl)maleimide to triallyl isocyanurate is 1:0.5-1.

7. The flame-retardant ABS composition according to claim 1, characterized in that, The styrene-acrylonitrile copolymer contains 30-35 wt% acrylonitrile, and the styrene-acrylonitrile-maleic anhydride terpolymer contains 30-35 wt% acrylonitrile and 5-10 wt% maleic anhydride.

8. The flame-retardant ABS composition according to claim 1, characterized in that, The processing aid is at least one of antioxidants, lubricants, or anti-dripping agents, and the brominated flame retardant is at least one of decabromodiphenyl ethane, bromotriazine, brominated epoxy resin, or tetrabromobisphenol A.

9. The method for preparing the flame-retardant ABS composition according to any one of claims 1-8, characterized in that, The process includes the following steps: mixing ABS resin, styrene-acrylonitrile copolymer, styrene-acrylonitrile-maleic anhydride terpolymer, fluorinated maleimide copolymer, graphite nanosheet modified high-resin powder, brominated flame retardant, phosphorus-based flame retardant and processing aid, melt extruding, granulating, to obtain a flame-retardant ABS composition.

10. The use of the flame-retardant ABS composition according to any one of claims 1-8 in the manufacture of electronic product and energy storage battery casings.

Images