Flame-retardant reinforced ABS composite material as well as preparation method and application thereof

Abstract

The invention relates to a flame-retardant reinforced ABS composite material as well as a preparation method and application thereof. The flame-retardant reinforced ABS composite material is prepared from the following raw materials in parts by weight: 40 to 60 parts of ABS resin, 3 to 9 parts of ABS high rubber powder, 10 to 20 parts of brominated epoxy resin, 1 to 5 parts of antimony-containing flame retardant, 1 to 7 parts of PMMA (polymethyl methacrylate) resin, 15 to 25 parts of glass fiber and 0.26 to 1.7 parts of auxiliaries. According to the invention, the formula of the ABS composite material is optimized, so that the obtained ABS composite material has good mechanical properties and also has good flame retardant property and high flowability, thereby being capable of well meeting the requirements of products for intelligent toilet lid motors; therefore, the method is more suitable for actual production and application of toilet lid motor shells, large-size household appliance shell components and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of polymer materials, and in particular to a flame retardant reinforced ABS composite material and a preparation method and application thereof. Background Art

[0002] The smart toilet industry is an emerging branch of the bathroom industry. Its products integrate intelligent functions such as seat heating, automatic cleaning, and induction flaps, meeting consumers' needs for a healthy, comfortable, and convenient life. In recent years, with technological innovation and consumption upgrades, the market size of smart toilets has expanded rapidly. The materials used in smart toilet lid assemblies are mainly antibacterial, weather-resistant, and flame-retardant PP (shell) and high-flowability, flame-retardant, and reinforced ABS (motor housing).

[0003] Conventional ABS resin is a non-flame retardant resin material. When it burns, the flame will quickly grow and cannot be self-extinguished. The flame retardant modification technology commonly used in the market for ABS is to add bromine (bromotriazine or decabromodiphenylethane) and antimony (antimony trioxide) as flame retardants, so that the ABS material can reach a flame retardant level of V0 or even higher. However, the addition of conventional bromine (bromotriazine or decabromodiphenylethane) flame retardants will affect the notched impact strength and fluidity of the ABS material, making the overall performance of the resulting ABS composite material poor, and thus cannot meet the needs of actual production well.

[0004] Therefore, it is of great significance to provide an ABS composite material that has good flame retardant properties and high fluidity while ensuring good mechanical properties. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a flame retardant reinforced ABS composite material and a preparation method and application thereof. By optimizing the formula of the ABS composite material and compounding it with brominated epoxy resin and other specific components, the obtained ABS composite material has good flame retardant properties and high fluidity while maintaining good mechanical properties, thereby being able to well meet the needs of products for smart toilet cover motors, and being more suitable for actual production applications of toilet cover motor housings, large-size household appliance housing components, etc.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a flame retardant reinforced ABS composite material, wherein the raw materials for preparing the flame retardant reinforced ABS composite material include the following components in parts by weight:

[0008]

[0009] In the present invention, by adding specific ABS high-glue powder, brominated epoxy resin, antimony-containing flame retardant, PMMA resin, glass fiber and additives to ABS resin, the obtained ABS composite material can maintain good fluidity while having flame retardant properties, so as to meet the needs of products for smart toilet cover motors. Among them, the addition of a specific content of brominated epoxy resin can effectively improve the fluidity of the obtained ABS composite material; at the same time, through the specific compounding of brominated epoxy resin, ABS high-glue powder and PMMA resin, while ensuring excellent mechanical properties and flame retardant properties, the fluidity of the obtained flame retardant reinforced ABS composite material can be significantly improved, so that the obtained ABS composite material has better mechanical properties (tensile strength, impact strength), impact resistance, flame retardant properties and fluidity, which is conducive to improving its processability and practicality.

[0010] In the present invention, the content of ABS resin is 40-60 parts by weight, for example, it can be 41 parts by weight, 42 parts by weight, 43 parts by weight, 44 parts by weight, 45 parts by weight, 46 parts by weight, 47 parts by weight, 48 parts by weight or 49 parts by weight.

[0011] The content of ABS high-rubber powder is 3-9 parts by weight, for example, it can be 3.5 parts by weight, 4 parts by weight, 4.5 parts by weight, 5 parts by weight, 5.5 parts by weight, 6 parts by weight, 7 parts by weight, 8 parts by weight or 8.5 parts by weight.

[0012] The content of the brominated epoxy resin is 10-20 parts by weight, for example, it can be 11 parts by weight, 12 parts by weight, 13 parts by weight, 14 parts by weight, 15 parts by weight, 16 parts by weight, 17 parts by weight, 18 parts by weight or 19 parts by weight.

[0013] In the present invention, the content of the specific brominated epoxy resin is selected to further improve the comprehensive performance of the obtained ABS composite material. When the content is less than 10 parts by weight, the fluidity and flame retardancy of the obtained flame retardant reinforced ABS composite material are poor due to insufficient addition of the brominated epoxy resin; when the content is higher than 20 parts by weight, the flame retardant performance reaches a saturated state due to excessive addition of the brominated epoxy resin, resulting in a significant decrease in the notched impact performance of the obtained flame retardant reinforced ABS composite material.

[0014] The content of the antimony-containing flame retardant is 1-5 parts by weight, for example, 1.2 parts by weight, 1.5 parts by weight, 1.8 parts by weight, 2 parts by weight, 2.5 parts by weight, 3 parts by weight, 3.5 parts by weight, 4 parts by weight, 4.5 parts by weight or 4.8 parts by weight.

[0015] In the present invention, a specific content of antimony-containing flame retardant can be used in combination with brominated epoxy resin, so that the two can play a good synergistic role, so that the obtained ABS composite material has not only good flame retardancy but also high fluidity.

[0016] The content of PMMA resin is 1-7 parts by weight, for example, it can be 1.2 parts by weight, 1.5 parts by weight, 2 parts by weight, 3 parts by weight, 4 parts by weight, 5 parts by weight, 6 parts by weight or 6.5 parts by weight.

[0017] The content of glass fiber is 15-25 parts by weight, for example, it can be 16 parts by weight, 17 parts by weight, 18 parts by weight, 19 parts by weight, 20 parts by weight, 21 parts by weight, 22 parts by weight, 23 parts by weight or 24 parts by weight.

[0018] In the present invention, the addition of glass fiber ensures that the obtained ABS composite material has a certain rigidity, so that the obtained ABS composite material has good mechanical properties; further, the addition of glass fiber can be well compounded with ABS high-rubber powder, which is beneficial to improving the fluidity of the obtained ABS composite material.

[0019] The content of the auxiliary agent is 0.26-1.7 parts by weight, for example, it can be 0.27 parts by weight, 0.28 parts by weight, 0.29 parts by weight, 0.3 parts by weight, 0.4 parts by weight, 0.5 parts by weight, 0.8 parts by weight, 1 part by weight, 1.3 parts by weight or 1.5 parts by weight.

[0020] Preferably, the ABS resin refers to an ABS resin having a melt index of 35-50 g / 10 min (for example, 36 g / 10 min, 38 g / 10 min, 39 g / 10 min, 40 g / 10 min, 41 g / 10 min, 42 g / 10 min, 43 g / 10 min, 44 g / 10 min, 45 g / 10 min, 47 g / 10 min or 49 g / 10 min, etc.) under the test conditions of 220° C. and 10 kg.

[0021] Preferably, the ABS high-rubber powder is an ABS high-rubber powder with a butadiene content of 58-62% (for example, 58%, 59%, 60%, 61% or 62%, etc.).

[0022] In the present invention, the selection of ABS high-rubber powder with a specific butadiene content is conducive to improving the toughness of the obtained ABS composite material. By compounding it with glass fiber, the impact resistance and flame retardancy of the obtained ABS composite material can be well adjusted, and the comprehensive performance of the obtained ABS composite material can be further improved.

[0023] Preferably, the brominated epoxy resin is a low molecular weight brominated epoxy resin specifically for ABS.

[0024] Preferably, the weight average molecular weight of the low molecular weight brominated epoxy resin is 650-750, for example, 660, 670, 680, 690, 700, 710, 720, 730 or 740.

[0025] Compared with the commonly used bromine flame retardants in the prior art, such as bromotriazine or decabromodiphenylethane, the present invention selectively adds a low molecular weight brominated epoxy resin, so that the obtained ABS composite material not only has good flame retardancy, but also can maintain a high notched impact strength. At the same time, its fluidity is also well improved, so that it simultaneously meets the comprehensive properties of excellent flame retardancy, mechanical properties and fluidity, thereby well meeting the needs of actual production.

[0026] Preferably, the PMMA resin refers to a PMMA resin having a melt index of 10-20 g / 10 min (for example, 11 g / 10 min, 12 g / 10 min, 13 g / 10 min, 14 g / 10 min, 15 g / 10 min, 16 g / 10 min, 17 g / 10 min, 18 g / 10 min or 19 g / 10 min, etc.) under the test conditions of 230°C and 3.8 kg.

[0027] Preferably, the antimony-containing flame retardant includes any one of antimony trioxide, antimony pentoxide or sodium antimonate, or a combination of at least two of them.

[0028] Preferably, the glass fiber is chopped glass fiber for ABS.

[0029] Preferably, the length of the chopped glass fiber for ABS is 3-5 mm, for example, 3 mm, 3.2 mm, 3.4 mm, 3.6 mm, 3.8 mm, 4.0 mm, 4.2 mm, 4.4 mm, 4.6 mm, 4.8 mm or 5 mm, and the diameter of the monofilament is 12-14 μm, for example, 12 μm, 12.2 μm, 12.4 μm,

[0030] 12.6μm, 12.8μm, 13μm, 13.2μm, 13.4μm, 13.6μm, 13.8μm or 14μm, etc.

[0031] Preferably, the mass ratio of the glass fiber to the ABS high rubber powder is 1:(0.2-0.4), for example, it can be 1:0.2, 1:0.22, 1:0.24, 1:0.26, 1:0.28, 1:0.3, 1:0.32, 1:0.34, 1:0.36 or 1:0.38, etc.

[0032] In the present invention, the mass ratio of specific glass fiber to ABS high-rubber powder is selected, so that the obtained flame-retardant reinforced ABS composite material has good mechanical properties and good flame retardancy and high fluidity. When the mass ratio of the two is higher than 1:0.2, the content of ABS high-rubber powder is too low, so that the tensile properties and notched impact strength of the obtained flame-retardant reinforced ABS composite material are significantly reduced, thereby affecting its mechanical properties, and its fluidity is also reduced; when the mass ratio of the two is lower than 1:0.4, the content of ABS high-rubber powder is too high, and although its notched impact strength is improved, its tensile strength and flexural strength are reduced, and its fluidity and flame retardancy are not good.

[0033] Preferably, the auxiliary agent includes any one of a compound antioxidant, a lubricant, an anti-dripping agent or silicone oil, or a combination of at least two thereof.

[0034] Preferably, the compound antioxidant is 0.1-0.5 parts by weight, for example, it can be 0.1 parts by weight, 0.15 parts by weight, 0.2 parts by weight, 0.25 parts by weight, 0.3 parts by weight, 0.35 parts by weight, 0.4 parts by weight, 0.45 parts by weight or 0.5 parts by weight.

[0035] Preferably, the compound antioxidant comprises a hindered phenol antioxidant and a phosphite antioxidant.

[0036] Preferably, the hindered phenol antioxidant includes any one of 2,6-di-tert-butyl-4-methylphenol, antioxidant 1010 or antioxidant 1076, or a combination of at least two of them.

[0037] Preferably, the phosphite antioxidant includes any one of antioxidant 168, antioxidant 3010 or antioxidant 2103, or a combination of at least two of them.

[0038] In the present invention, by selecting a specific compound antioxidant, it can exert better antioxidant properties, thereby improving the heat-resistant oxygen stability of the obtained ABS composite material, and further facilitating the improvement of the service life of the obtained ABS composite material.

[0039] Preferably, the lubricant is 0.1-0.8 parts by weight, for example, it can be 0.15 parts by weight, 0.2 parts by weight, 0.25 parts by weight, 0.3 parts by weight, 0.35 parts by weight, 0.4 parts by weight, 0.5 parts by weight, 0.6 parts by weight or 0.7 parts by weight.

[0040] In the present invention, the addition of lubricant is beneficial to improving the processing performance of the obtained ABS composite material, thereby increasing the product yield.

[0041] Preferably, the lubricant comprises pentaerythrityl tetrastearate (PETS) and / or ethylene bis stearamide (EBS).

[0042] Preferably, the anti-dripping agent is 0.05-0.3 parts by weight, for example, it can be 0.06 parts by weight, 0.08 parts by weight, 0.1 parts by weight, 0.12 parts by weight, 0.15 parts by weight, 0.2 parts by weight, 0.25 parts by weight or 0.28 parts by weight.

[0043] Preferably, the anti-dripping agent is a PTFE composite resin coated with MBS.

[0044] Preferably, the silicone oil is 0.01-0.1 parts by weight, for example, it can be 0.02 parts by weight, 0.03 parts by weight, 0.04 parts by weight, 0.05 parts by weight, 0.06 parts by weight, 0.07 parts by weight, 0.08 parts by weight or 0.09 parts by weight.

[0045] Preferably, the silicone oil is dimethyl silicone oil.

[0046] In the present invention, the addition of silicone oil is beneficial to improving the dispersibility, thereby making the mixing of the components more uniform, and further beneficial to improving the yield of the obtained ABS composite material.

[0047] In a second aspect, the present invention provides a method for preparing the flame retardant reinforced ABS composite material as described in the first aspect, the preparation method comprising the following steps:

[0048] ABS resin, ABS high-rubber powder, brominated epoxy resin, antimony-containing flame retardant, PMMA resin and additives are mixed, glass fiber is added, and extrusion granulation is performed to obtain the flame-retardant reinforced ABS composite material.

[0049] Preferably, the mixing is performed under stirring.

[0050] Preferably, the stirring speed is 400-800 r / min, for example, 450 r / min, 500 r / min, 550 r / min, 600 r / min, 650 r / min, 700 r / min or 750 r / min.

[0051] Preferably, the stirring time is 6-10 min, for example, 6 min, 7 min, 8 min, 9 min or 10 min.

[0052] Preferably, drying is performed before the mixing.

[0053] Preferably, the drying temperature is 80-100°C, for example, 80°C, 82°C, 85°C, 88°C, 90°C, 92°C, 94°C, 96°C, 98°C or 100°C.

[0054] Preferably, the drying time is 1-2 h, for example, it can be 1.2 h, 1.3 h, 1.4 h, 1.5 h, 1.6 h, 1.7 h, 1.8 h or 1.9 h.

[0055] Preferably, the extrusion granulation is performed by a twin-screw extruder.

[0056] Preferably, the main engine speed of the twin-screw extruder is 220-600r / min, for example, it can be 230r / min, 250r / min, 300r / min, 350r / min, 400r / min, 450r / min, 500r / min or 550r / min, etc.; the feeding speed is 12-24r / min, for example, it can be 13r / min, 14r / min, 15r / min, 16r / min, 17r / min, 18r / min, 19r / min, 20r / min, 21r / min, 22r / min or 23r / min, etc.

[0057] Preferably, the temperature zone of the twin-screw extruder is set between 170-240°C (for example, 170°C, 180°C, 190°C, 200°C, 210°C, 220°C, 230°C, 235°C or 240°C, etc.).

[0058] In a third aspect, the present invention provides an application of the flame retardant reinforced ABS composite material as described in the first aspect in a smart toilet cover motor product.

[0059] The flame-retardant reinforced ABS composite material provided by the present invention can also be applied to other technical fields requiring high fluidity, such as smart bathrooms, kitchens, household appliances, and automotive parts.

[0060] Compared with the prior art, the present invention has at least the following beneficial effects:

[0061] (1) The present invention optimizes the formula of the ABS composite material. The addition of a specific content of brominated epoxy resin can effectively improve the fluidity of the obtained ABS composite material. At the same time, through the specific compounding of brominated epoxy resin, ABS high-rubber powder and PMMA resin, the obtained ABS composite material can also have better mechanical properties (tensile strength, impact strength), impact resistance, flame retardancy and fluidity, which is beneficial to improve its processability and practicality.

[0062] (2) The flame-retardant reinforced ABS composite material provided by the present invention has good flame retardancy and high fluidity while maintaining good mechanical properties, so that it can well meet the needs of products for smart toilet cover motors, and is more suitable for actual production applications such as toilet cover motor housings, large-size household appliance housing parts, etc. DETAILED DESCRIPTION

[0063] For the convenience of understanding the present invention, the present invention lists the following embodiments. It should be understood by those skilled in the art that the embodiments are only to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0064] Some of the raw material information used in the following examples is as follows:

[0065] ABS resin: purchased from LG Chemical Huizhou Chemical Co., Ltd., HP181;

[0066] ABS high-rubber powder: purchased from Kumho Petrochemical Co., Ltd., South Korea, HR181;

[0067] Low molecular weight brominated epoxy resin: purchased from Yujin Polymer Co., Ltd., South Korea, CXB-714C;

[0068] Bromotriazine: purchased from Shouguang Weidong Chemical Co., Ltd., RDT-8;

[0069] Antimony trioxide: purchased from StarBeida (Shanghai) Chemical Co., Ltd., 99.8%;

[0070] PMMA resin: purchased from Chi Mei Industrial Co., Ltd., CM-211;

[0071] Chopped glass fiber: purchased from China Jushi Co., Ltd., ECS13-4.5-534A;

[0072] Anti-dripping agent: purchased from Guangzhou Energetic Innovation Materials Co., Ltd., SN3306;

[0073] Lubricant: purchased from Kao Corporation, Japan, EBS EB-FF;

[0074] Silicone oil: purchased from Dow Corning, USA, PMX200-1000CS;

[0075] Other raw materials are commercially available unless otherwise specified.

[0076] Example 1

[0077] This embodiment provides a flame retardant reinforced ABS composite material, the raw materials for preparing the composite material include the following components in parts by weight:

[0078]

[0079]

[0080] The preparation method of the flame retardant reinforced ABS composite material comprises the following steps:

[0081] The above-mentioned weight portions of ABS resin, ABS high-glue powder, brominated epoxy resin, antimony trioxide, PMMA resin, antioxidant 1010, antioxidant 168, anti-dripping agent, lubricant and silicone oil are dried at 85°C for 2 hours, and then added to a high-speed mixer for stirring for 10 minutes, with the mixer speed being 600r / min. The mixed raw materials are added to a twin-screw extruder for extrusion, and glass fiber is added from the side feed port, cooled, granulated and dried. The 11 temperature zones are set to 170°C, 240°C, 240°C, 235°C, 235°C, 230°C, 230°C, 235°C, 235°C, 240°C, respectively, with a feed speed of 15r / min and a main engine speed of 350r / min. The obtained mixed granulation is injection molded to form the flame-retardant reinforced ABS composite material.

[0082] Example 2

[0083] This embodiment provides a flame retardant reinforced ABS composite material, the raw materials for preparing the composite material include the following components in parts by weight:

[0084]

[0085] The preparation method of the flame retardant reinforced ABS composite material comprises the following steps:

[0086] The above-mentioned weight parts of ABS resin (Jilin Petrochemical 0215F), ABS high-glue powder, brominated epoxy resin, antimony pentoxide, PMMA resin, antioxidant 1076, antioxidant 168, anti-dripping agent, lubricant and silicone oil were dried at 80°C for 1 hour, and then added to a high-speed mixer for stirring for 6 minutes, and the mixer speed was 400r / min. The mixed raw materials were added to a twin-screw extruder for extrusion, and glass fiber was added from the side feed port, cooled, granulated, and dried. The 11 temperature zones were set to 170°C, 240°C, 240°C, 235°C, 235°C, 230°C, 230°C, 235°C, 235°C, 240°C, respectively, the feed speed was 12r / min, the main engine speed was 220r / min, and the obtained mixed granulation was injection molded to form the flame-retardant reinforced ABS composite material.

[0087] Example 3

[0088] This embodiment provides a flame retardant reinforced ABS composite material, the raw materials for preparing the composite material include the following components in parts by weight:

[0089]

[0090] The preparation method of the flame retardant reinforced ABS composite material comprises the following steps:

[0091] The above-mentioned weight parts of ABS resin, ABS high glue powder (Guoqiao 60P), brominated epoxy resin, antimony trioxide, PMMA resin (Wanhua Chemical SF01), antioxidant 1010, antioxidant 3010, anti-dripping agent, lubricant and silicone oil were dried at 100°C for 1.5 hours, and then added to a high-speed mixer for stirring for 8 minutes, and the mixer speed was 800r / min. The mixed raw materials were added to a twin-screw extruder for extrusion, and glass fiber was added from the side feed port, cooled, granulated, and dried. The 11 temperature zones were set to 170°C, 240°C, 240°C, 235°C, 235°C, 230°C, 230°C, 235°C, 235°C, and 240°C, respectively, the feed speed was 24r / min, the main engine speed was 600r / min, and the obtained mixed granulation was injection molded to form the flame retardant reinforced ABS composite material.

[0092] Example 4

[0093] This embodiment provides a flame retardant reinforced ABS composite material, the raw materials for preparing the composite material include the following components in parts by weight:

[0094]

[0095] The preparation method of the flame retardant reinforced ABS composite material is the same as that in Example 1.

[0096] Example 5

[0097] This embodiment provides a flame retardant reinforced ABS composite material, which differs from Example 1 in that the content of ABS high-rubber powder is adjusted from 5 parts by weight to 3 parts by weight, and the reduced weight parts are proportionally distributed to brominated epoxy resin and PMMA resin. Other components, contents and preparation methods are the same as those in Example 1.

[0098] Example 6

[0099] This embodiment provides a flame retardant reinforced ABS composite material, which differs from Example 1 in that the content of ABS high-rubber powder is adjusted from 5 parts by weight to 4 parts by weight, and the reduced weight parts are proportionally distributed to the brominated epoxy resin and the PMMA resin. Other components, contents and preparation methods are the same as those in Example 1.

[0100] Example 7

[0101] This embodiment provides a flame retardant reinforced ABS composite material, which differs from Example 1 in that the content of ABS high-rubber powder is adjusted from 5 parts by weight to 8 parts by weight, and the increased weight parts are proportionally reduced by the weight parts of brominated epoxy resin and PMMA resin. Other components, contents and preparation methods are the same as those in Example 1.

[0102] Example 8

[0103] This embodiment provides a flame retardant reinforced ABS composite material, which differs from Example 1 in that the content of ABS high-rubber powder is adjusted from 5 parts by weight to 9 parts by weight, and the increased weight parts are proportionally reduced by the weight parts of brominated epoxy resin and PMMA resin. Other components, contents and preparation methods are the same as those in Example 1.

[0104] Comparative Example 1

[0105] This comparative example provides an ABS composite material, which is different from Example 4 only in that the brominated epoxy resin is replaced by bromotriazine, and the other components, contents and preparation methods are the same as those in Example 4.

[0106] Comparative Example 2

[0107] This comparative example provides an ABS composite material, which is different from Example 4 only in that the brominated epoxy resin is replaced by decabromodiphenylethane, and the other components, contents and preparation methods are the same as those of Example 4.

[0108] Comparative Example 3

[0109] This comparative example provides an ABS composite material, which differs from Example 1 only in that ABS high-rubber powder is not added, and the reduced weight portion thereof is proportionally distributed to the brominated epoxy resin and the PMMA resin, and the other components, contents and preparation methods are the same as those in Example 1.

[0110] Comparative Example 4

[0111] This comparative example provides an ABS composite material, which differs from Example 1 only in that no brominated epoxy resin is added, and the reduced weight portion thereof is proportionally distributed to ABS high-rubber powder and PMMA resin, and other components, contents and preparation methods are the same as those in Example 1.

[0112] Comparative Example 5

[0113] This comparative example provides an ABS composite material, which differs from Example 1 only in that PMMA resin is not added, and the reduced weight portion thereof is proportionally distributed to ABS high-rubber powder and brominated epoxy resin, and other components, contents and preparation methods are the same as those in Example 1.

[0114] Comparative Example 6

[0115] This comparative example provides an ABS composite material, which is different from Example 1 only in that the content of the brominated epoxy resin is adjusted from 16 parts by weight to 9 parts by weight, and the other components, contents and preparation methods are the same as those in Example 1.

[0116] Comparative Example 7

[0117] This comparative example provides an ABS composite material, which is different from Example 1 only in that the content of the brominated epoxy resin is adjusted from 16 parts by weight to 21 parts by weight, and the other components, contents and preparation methods are the same as those in Example 1.

[0118] Comparative Example 8

[0119] This comparative example provides an ABS composite material, which is different from Example 1 only in that glass fiber is not added, and other components, contents and preparation methods are the same as those in Example 1.

[0120] The ABS composite materials obtained in the above Examples 1-8 and Comparative Examples 1-8 were subjected to performance tests. The test standards are shown in Table 1, and the test results are shown in Table 2.

[0121] Table 1

[0122] Performance Indicators Test Standards density GB / T 1033.2-2010 MI (220℃, 10kg) GB / T 3682.1-2018 Tensile Strength GB / T 1040.2-2022 Bending Strength GB / T 9341-2008 Flexural modulus GB / T 9341-2008 Notched impact strength GB / T 1843-2008 Flame retardant performance, 1.6mm UL94

[0123] Table 2

[0124]

[0125]

[0126] The test results show that:

[0127] (1) It can be seen from Examples 1 to 8 that the present invention optimizes the formula of the ABS composite material so that the obtained ABS composite material has flame retardant properties and good fluidity. Its MI (220°C, 10kg) can reach 37.4, tensile strength is 67MPa, flexural strength is 137MPa, flexural modulus is 6628MPa, and notched impact strength is 13.3KJ / m 2 , flame retardant performance (1.6mm) is V0.

[0128] (2) By comparing Example 1 with Examples 5-8, it can be found that when the mass ratio of ABS high-rubber powder to glass fiber is higher than 0.4, the flame retardancy of the obtained ABS composite material is reduced; when the mass ratio of ABS high-rubber powder to glass fiber is lower than 0.2, the toughness of the obtained ABS composite material is insufficient, thereby reducing its notched impact resistance.

[0129] (3) By comparing Example 4 with Comparative Examples 1 and 2, it can be shown that, compared with bromine flame retardants such as brominated triazine or decabromodiphenylethane, the addition of the specific brominated epoxy resin provided by the present invention can significantly improve the notched impact strength of the obtained ABS composite material, so that it maintains good mechanical properties; at the same time, while ensuring good mechanical properties and flame retardant properties, the addition of the brominated epoxy resin can further improve the melt index of the obtained ABS composite material, thereby ensuring that it has the characteristics of high fluidity, which is beneficial to improving its processing performance.

[0130] (4) By comparing Example 1 with Comparative Examples 3-5, it can be found that when any one of the components of ABS high-rubber powder, brominated epoxy resin and PMMA resin is lacking, the melt index of the obtained ABS composite material is significantly reduced, that is, its high fluidity property cannot be guaranteed; at the same time, in Comparative Example 4, no brominated epoxy resin is added, so that the flame retardancy of the obtained ABS composite material is significantly reduced. In Comparative Example 3, no ABS high-rubber powder is added, and in Comparative Example 5, no PMMA resin is added. The notched impact strength of the ABS composite materials obtained by both of them is reduced. In particular, when the preparation system of the composite material lacks ABS high-rubber powder, its notched impact strength is significantly reduced, which cannot well meet the needs of actual production applications. Therefore, the mutual coordination of ABS high-rubber powder, brominated epoxy resin and PMMA resin can make the obtained ABS composite material have good comprehensive performance, indicating that the ABS high-rubber powder, brominated epoxy resin and PMMA resin in the ABS composite material provided by the present invention have a certain synergistic effect, and the three are specifically matched with antimony trioxide, chopped glass fibers, compounded antioxidants and additives, so that the obtained ABS composite material has the advantages of high fluidity, high notched impact strength and strong flame retardancy.

[0131] (5) By comparing Example 1 with Comparative Examples 6 and 7, it can be found that the addition of a specific content of brominated epoxy resin can improve the comprehensive properties of the obtained ABS composite material. When the content is less than 10 parts by weight, due to insufficient addition of brominated epoxy resin, the fluidity and flame retardancy of the obtained flame retardant reinforced ABS composite material are poor; when the content is higher than 20 parts by weight, due to excessive addition of brominated epoxy resin, the flame retardant property has reached a saturated state in Example 1, resulting in a significant decrease in the notched impact performance of the obtained flame retardant reinforced ABS composite material.

[0132] (6) By comparing Example 1 with Comparative Example 8, it can be found that the tensile strength and flexural strength of the ABS composite material obtained in Comparative Example 8 are significantly reduced, and its fluidity is reduced, indicating that when the ABS composite material does not contain glass fiber, the rigidity of the ABS composite material obtained is insufficient, thereby significantly reducing its mechanical properties; at the same time, it also destroys its compounding with ABS high-rubber powder, thereby reducing its fluidity, and thus cannot meet the needs of actual processing and production.

[0133] In summary, the present invention optimizes the formula of the ABS composite material so that the obtained ABS composite material has good flame retardant properties and excellent fluidity while maintaining good mechanical properties, thereby being able to well meet the needs of products for smart toilet cover motors, and being more suitable for actual production applications of toilet cover motor housings, large-size household appliance housing parts, etc.

[0134] The applicant declares that the above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention shall fall within the protection scope and disclosure scope of the present invention.

Claims

1. A flame retardant reinforced ABS composite material, characterized in that: The raw materials for preparing the flame retardant reinforced ABS composite material include the following components in parts by weight:

2. The flame retardant reinforced ABS composite material according to claim 1, characterized in that: The ABS resin refers to an ABS resin having a melt index of 35-50 g / 10 min under the test conditions of 220° C. and 10 kg.

3. The flame retardant reinforced ABS composite material according to claim 1 or 2, characterized in that: The ABS high-rubber powder is an ABS high-rubber powder with a butadiene content of 58-62%.

4. The flame retardant reinforced ABS composite material according to any one of claims 1 to 3, characterized in that: The brominated epoxy resin is a low molecular weight brominated epoxy resin specially used for ABS; Preferably, the weight average molecular weight of the low molecular weight brominated epoxy resin is 650-750.

5. The flame retardant reinforced ABS composite material according to any one of claims 1 to 4, characterized in that: The PMMA resin refers to a PMMA resin having a melt index of 10-20 g / 10 min under the test conditions of 230° C. and 3.8 kg.

6. The flame retardant reinforced ABS composite material according to any one of claims 1 to 5, characterized in that: The antimony-containing flame retardant includes any one of antimony trioxide, antimony pentoxide or sodium antimonate, or a combination of at least two of them.

7. The flame retardant reinforced ABS composite material according to any one of claims 1 to 6, characterized in that: The glass fiber is chopped glass fiber for ABS; Preferably, the length of the chopped glass fiber for ABS is 3-5 mm, and the diameter of the single fiber is 12-14 μm; Preferably, the mass ratio of the glass fiber to the ABS high-rubber powder is 1:(0.2-0.4).

8. The flame retardant reinforced ABS composite material according to any one of claims 1 to 7, characterized in that: The auxiliary agent includes any one or a combination of at least two of a compound antioxidant, a lubricant, an anti-dripping agent or silicone oil; Preferably, the compound antioxidant is 0.1-0.5 parts by weight; Preferably, the compound antioxidant comprises a hindered phenol antioxidant and a phosphite antioxidant; Preferably, the hindered phenol antioxidant includes any one of 2,6-di-tert-butyl-4-methylphenol, antioxidant 1010 or antioxidant 1076, or a combination of at least two thereof; Preferably, the phosphite antioxidant includes any one of antioxidant 168, antioxidant 3010 or antioxidant 2103, or a combination of at least two thereof; Preferably, the lubricant is 0.1-0.8 parts by weight; Preferably, the lubricant comprises pentaerythritol stearate and / or vinyl bisstearamide; Preferably, the anti-dripping agent is 0.05-0.3 parts by weight; Preferably, the anti-dripping agent is a PTFE composite resin coated with MBS; Preferably, the silicone oil is 0.01-0.1 parts by weight; Preferably, the silicone oil is dimethyl silicone oil.

9. A method for preparing the flame retardant reinforced ABS composite material according to any one of claims 1 to 8, characterized in that: The preparation method comprises the following steps: ABS resin, ABS high-rubber powder, brominated epoxy resin, antimony-containing flame retardant, PMMA resin and additives are mixed, glass fiber is added, and extrusion granulation is performed to obtain the flame-retardant reinforced ABS composite material; Preferably, the mixing is carried out under stirring; Preferably, the stirring speed is 400-800r / min; Preferably, the stirring time is 6-10 min; Preferably, drying is performed before the mixing; Preferably, the drying temperature is 80-100°C; Preferably, the drying time is 1-2h; Preferably, the extrusion granulation is carried out by a twin-screw extruder; Preferably, the main engine speed of the twin-screw extruder is 220-600r / min, and the feeding speed is 12-24r / min; Preferably, the temperature zone of the twin-screw extruder is set between 170-240°C.

10. Use of the flame retardant reinforced ABS composite material according to any one of claims 1 to 8 in a smart toilet seat motor product.

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