A low-odor, slow-burning biomass porous carbon black modified ABS material and its preparation method

Abstract

The present invention belongs to the field of plastic modification and dyeing technology, and relates to a low-odor, slow-burning biomass porous carbon black modified ABS material and its preparation method. The preparation method comprises selecting a biomass carbon-silicon material and performing two silicon dioxide removal treatments, and then treating it with a coupling agent to form a treated biomass porous carbon black material; weighing ABS resin and placing it in a stirring pot; adding a wetting agent to the stirring pot and stirring evenly; adding a processing aid package and the treated biomass porous carbon black material to the stirring pot, stirring evenly at high speed, and then adding the mixed material to a main feed weight loss scale; setting the feed rate and screw speed of the weight loss scale for granulation production. This method, while ensuring the performance of simply supported beam notched impact strength, flexural strength, tensile strength, and having a dyeing function, can reduce the odor and combustion rate of the ABS material by modifying it with the treated biomass porous carbon black material, thereby achieving low-odor and slow-burning functions.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic modification and dyeing, and particularly relates to a low-odor, slow-burning biomass porous carbon black modified ABS material and a preparation method thereof. Background Art

[0002] Currently, modified materials available on the market only meet certain functional requirements and often lack functional diversity. This often requires the use of multiple modifiers or additives, resulting in products that cannot meet the functional diversity requirements. The use of too many additives can often lead to rejection reactions and unpredictable issues during later use. Therefore, when designing a formulation, it is important to simplify the formula as much as possible and comprehensively consider various factors to meet future use requirements. While cars have improved people's lives, they can also bring some problems. The primary source of odor in automotive interior plastics is volatile organic compounds, which evaporate more rapidly at high temperatures, producing a pungent odor. Common compounds include benzene, aldehydes, and ketones. In addition, some organic compounds, such as ethers, esters, alcohols, amines, ketones, and alkanes, can also emit specific odors, contributing to excessive material odor. The combustion characteristics of automotive interior materials (GB / T8410) measure the combustion rate of automotive interior materials. These characteristics can affect the combustion rate in the event of a fire and are crucial to the safety of vehicle occupants. Based on this, it is necessary to develop a low-odor, slow-burning biomass porous carbon black modified ABS material.

[0003] The prior art discloses a high-performance, low-leakage, low-odor ABS material and its preparation method. The material comprises the following raw materials by weight: 83-98 parts ABS resin, 5-10 parts graphene-based deodorant, and 0.2-0.9 parts lubricant. The preparation method comprises: stirring the raw materials at high speed in a high-speed blender to obtain a premix; then melt-extruding the premix through a twin-screw extruder, cooling with water, pelletizing, and mixing until uniform. The graphene-based deodorant is a product of in-situ grafting of amino-modified GO-TiO2 onto hyperbranched polyamide followed by chemical grafting onto MAH-g-SBS. While this method utilizes a graphene-based deodorant to remove odor and reduce the material's odor, the deodorant is extremely complex to produce, is costly, and is a chemical product. This often hinders widespread use due to price and environmental concerns. Prior art also discloses a flame-retardant masterbatch for ABS, which is composed, by weight, of the following components: 20-70% polycarbonate, 0.01-70% color powder, 2-20% dispersant, 5-40% flame retardant, and 0-50% synergist. When used to color ABS products, the masterbatch achieves a combustion rate that meets UL94 HB rating. However, the high cost of the flame retardant and synergist makes their widespread use difficult.

[0004] In summary, no existing ABS composite material can simultaneously meet the requirements of low odor and slow combustion. Therefore, there is an urgent need to develop an inexpensive ABS material with slow combustion that can simultaneously meet these two requirements when modifying ABS to effectively solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a low-odor, slow-burning biomass porous carbon black modified ABS material and a preparation method thereof, so as to solve the problem of achieving low-odor and slow-burning functions when a single modifier is added.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A low-odor, slow-burning biomass porous carbon black modified ABS material, composed of the following raw materials in parts by mass:

[0008] ABS resin: 95-100 parts,

[0009] Treated biomass porous carbon black material: 0-5 parts,

[0010] Processing aid package: 1 part,

[0011] Wetting agent: 0.5 parts.

[0012] Furthermore, the ABS resin is prepared by a polymerization method of mechanical blending, emulsion polymerization or bulk polymerization.

[0013] Furthermore, the treated biomass porous carbon black material is a powdery material with a diameter of 10-25 microns obtained by desiliconizing the biomass carbon-silicon material twice and then treating it with a silane coupling agent.

[0014] Furthermore, the processing aid package includes an antioxidant and a lubricant; wherein, the antioxidant is obtained by compounding a hindered phenol and a phosphite antioxidant in a ratio of 1:2, the hindered phenol is at least one of 1010, 1076, and 1098, and the phosphite is at least one of 168 and 618; the lubricant is mainly at least one of ethylene bisstearamide, pentaerythritol stearate, stearic acid, stearate, and polyethylene wax.

[0015] Furthermore, the wetting agent is at least one of white oil and diffusion oil.

[0016] A low-odor, slow-burning biomass porous carbon black modified ABS material and a preparation method thereof, comprising the following steps: selecting a biomass carbon-silicon material, sequentially removing exposed silica exposed on the carbon surface and removing embedded silica encapsulated by the carbon, and then treating it with a silane coupling agent; weighing ABS resin and placing it into a stirring pot; adding a wetting agent to the stirring pot and stirring it evenly; adding a processing aid package and treated biomass porous carbon black material to the stirring pot, stirring them evenly at high speed, and then adding the mixed material to a main feed loss-in-weight scale; setting the feed rate of the loss-in-weight scale to 35 kg / h, setting the main engine screw speed to 420 rpm, turning on auxiliary equipment, and performing granulation production.

[0017] The specific steps include:

[0018] A. Select biomass carbon-silicon material powder, with silicon dioxide accounting for 45%-50% of the total weight, carbon accounting for 50%-55% of the total weight, and other components accounting for 0%-0.5% of the total weight. The particle size should be between 10-25 microns, and the following treatment should be performed:

[0019] A1. Removal of exposed silica: The biochar-silicon material was reacted with an excess of 40% sodium hydroxide solution in a reactor at 60°C to remove silica and increase the pore ratio of the biochar-silicon material. The material was then rinsed repeatedly with deionized water, filtered, and placed in a large drying oven at 85°C, -0.6MPa, and dried for 4 hours for later use.

[0020] A1-1. Take 20 grams of the product obtained in step A1, place it in a dry pot, place it in a muffle furnace at 650°C, and incinerate for 4 hours. Calculate whether the combustion residue is less than 7%. If the combustion residue is less than 7%, step A1 is considered qualified, and the dried product obtained in step A1 is considered as biomass carbon black material;

[0021] A2. Removal of embedded silica: In order to reduce the combustion residue of the biomass carbon black material to less than 1%, the biomass carbon black material of step A1 was mixed with sodium hydroxide powder in a weight ratio of 10:1.2, placed in a high-temperature furnace at 625°C in a nitrogen environment, and heated for 2.5 hours. The diameter of the sodium hydroxide powder was less than 0.1 mm;

[0022] A3. Repeatedly rinse the material obtained in step A2 with deionized water until it becomes neutral, and then filter dry.

[0023] A4. Place the biomass carbon black material obtained in step A3 into a vacuum oven at 85°C, -0.6 MPa, and dry for 4 hours.

[0024] A4-1. Take 20 g of the dried product obtained in step A4, place it in a dry pot, place it in a muffle furnace at 650°C, and incinerate it for 4 hours. Calculate whether the combustion residue is less than 1%. If the combustion residue is less than 1%, the dried product obtained in step A4 is a biomass porous carbon black material.

[0025] A5. The biomass porous carbon black material obtained in step A4 is placed in a high-pressure mixing pot at a speed of 420 rpm and a temperature of 80°C. A spray device is provided on the top of the high-pressure mixing pot, and an alcohol dilution of a silane coupling agent (SI-69) is configured. The silane coupling agent content is 50%. 10 kg of biomass porous carbon black material needs to be sprayed with 50 g of a 50% alcohol dilution of a silane coupling agent, 10 g each time, with an interval of 2 minutes (during which the high-pressure mixing pot is continuously stirred). Then, the high-pressure mixing pot is continued to stir for 30 minutes and the material is discharged. At this time, the treated biomass porous carbon black material is obtained.

[0026] B. Weigh a certain amount of ABS resin and put it into a stirring pot. Add a certain amount of wetting agent into the stirring pot and stir for 5 minutes until it is evenly stirred.

[0027] C. Add a certain amount of processing aid package and treated biomass porous carbon black material into the stirring pot and stir at high speed for 5 minutes to completely wrap the powder material on the outer surface of the ABS material;

[0028] D. Add the mixed materials into the main feed loss-in-weight scale;

[0029] E. Set the feed rate of the loss-in-weight scale to 35 kg / h, set the screw speed to 420 rpm, turn on the vacuum device, turn on the auxiliary equipment, and start granulation production.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The present invention provides a method for modifying ABS using processed biomass porous carbon black material to meet the requirements of low odor and slow combustion. This method is superior to using more than one additive to meet a single function and has a greater advantage in functional diversification;

[0032] 2. The carbon of the processed biomass porous carbon black material contains a large number of pores, and its specific surface area is many times its volume, which can adsorb small molecules in the modified ABS material, thereby reducing the overall odor of the material;

[0033] 3. ABS modified with treated porous biomass carbon black can reduce the combustion rate of the composite material, achieving a slow burn effect. Specifically, the flame retardant mechanism involves the following aspects: Gas-phase flame retardant mechanism: The treated porous biomass carbon black material possesses a large number of micropores and mesopores, resulting in a surface area far exceeding its volume. These micropores and mesopores provide the treated porous biomass carbon black material with a vast adsorption capacity, effectively absorbing various gas and liquid molecules. Oxygen cannot penetrate the interior of the treated porous biomass carbon black material. Even if ignited, combustion occurs only on the surface and not deep within, resulting in incomplete combustion. Due to the condensed-phase flame retardant mechanism, when the treated porous biomass carbon black modified ABS material burns, a porous carbon layer forms on its surface. This carbon layer provides insulation, oxygen isolation, and encapsulation of combustibles, slowing the spread of flames and thus slowing the combustion of the material. These mechanisms work together to give the treated porous biomass carbon black modified ABS excellent slow burn properties, effectively reducing the material's combustion rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 , flow chart of processed biomass porous carbon black materials. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with embodiment:

[0037] This invention provides a low-odor, slow-burning biomass porous carbon black-modified ABS material and its preparation method. The treated biomass porous carbon black material is a commercially available biomass carbon-silicon powder. Specifically, it is made from plants containing a high amount of silica (corn leaves, rice husks, wheat husks, etc.) under inert gas (nitrogen) protection and high temperature (500°C). The silica content is required to be between 45% and 50% by weight, and the powder is ground into a particle size (D50) of 10-25 microns. The biomass carbon-silicon material is reacted with an excess of sodium hydroxide solution to remove the silica exposed on the carbon surface. To further increase the porosity, sodium hydroxide powder is mixed with the biomass carbon black material in a proportional manner and heated at high temperature to remove the embedded porous silica. When the combustion residue is less than 1%, the dried product is a biomass porous carbon black material. The biomass porous carbon black material is then treated with a coupling agent to obtain the treated biomass porous carbon black material. Modifying ABS with processed biomass porous carbon black materials can reduce the odor of the material and reduce the combustion rate, thereby achieving the purpose of low odor and slow combustion of ABS modified materials.

[0038] The low-odor, slow-burning ABS material of the present invention is composed of the following raw materials in parts by mass:

[0039] ABS resin: 95-100 parts,

[0040] Treated biomass porous carbon black material: 0-5 parts,

[0041] Processing aid package: 1 part,

[0042] Wetting agent: 0.5 parts.

[0043] The ABS resin is prepared by a polymerization method of mechanical blending, emulsion polymerization or bulk polymerization.

[0044] The biomass porous carbon black material is a powdery material with a diameter of 10-25 microns obtained by desiliconizing a biomass carbon-silicon material twice and then treating it with a silane coupling agent.

[0045] The processing aid package includes an antioxidant and a lubricant. The antioxidant is a hindered phenol and phosphite antioxidant blended in a ratio of 1:2. The hindered phenol is at least one of 1010, 1076, and 1098, and the phosphite is at least one of 168 and 618. The lubricant is primarily at least one of ethylene bisstearamide (EBS), pentaerythritol stearate (PETS), stearic acid, a stearate salt, and polyethylene wax.

[0046] The wetting agent is at least one of white oil and diffusion oil.

[0047] The present invention discloses a low-odor, slow-burning biomass porous carbon black-modified ABS material and its preparation method, comprising the following steps: selecting a biomass carbon-silicon material, performing two silica removal treatments to form a biomass porous carbon black material, and then treating it with a coupling agent to form a treated biomass porous carbon black material; weighing ABS resin and a compatibilizer into a stirring pot and stirring evenly; adding a wetting agent to the stirring pot and stirring evenly; adding a processing aid package and the treated biomass porous carbon black material into the stirring pot, stirring evenly at high speed, and then adding the mixed material to a main feed loss-in-weight scale. The weight loss scale's discharge rate is set to 35 kg / hour, the main engine screw speed is set to 420 rpm, and auxiliary equipment is turned on to initiate granulation production.

[0048] Among them, the two silica removal treatments include the removal of exposed silica on the carbon surface and the removal of embedded silica wrapped by carbon.

[0049] Specifically, the method includes the following steps:

[0050] A. Select commercially available biomass carbon-silicon material powder, with silicon dioxide accounting for 45%-50% of the total weight, carbon accounting for 50%-55% of the total weight, and other components accounting for 0%-0.5% of the total weight. The particle size should be between 10-25 microns. The processing method is:

[0051] A1. Removal of exposed silica: The biochar-silicon material is reacted with an excess of 40% sodium hydroxide solution in a reactor at 60°C to remove silica (SiO2 + 2NaOH = Na2SiO3 + H2O), thereby increasing the pore ratio of the biochar-silicon material. The material is then rinsed repeatedly with deionized water, filtered, and placed in a large drying oven at 85°C, -0.6MPa, for 4 hours for later use.

[0052] A1-1. Take 20 grams of the product obtained in step A1, place it in a dry pot, place it in a muffle furnace at 650°C, and incinerate for 4 hours. Calculate whether the combustion residue is less than 7%. If the combustion residue is less than 7%, step A1 is considered qualified, and the dried product obtained in step A1 is considered as biomass carbon black material;

[0053] A2. Removal of embedded silica: To reduce the combustion residue of the biomass carbon black material to less than 1%, the biomass carbon black material from step A1 was mixed with sodium hydroxide powder (diameter less than 0.1 mm) in a weight ratio of 10:1.2, and placed in a high-temperature furnace at 625°C in a nitrogen environment for 2.5 hours.

[0054] A3. Repeatedly rinse the material obtained in step A2 with deionized water until it becomes neutral, and then filter dry.

[0055] A4. Place the biomass carbon black material obtained in step A3 into a vacuum oven at 85°C, -0.6 MPa, and dry for 4 hours.

[0056] A4-1. Take 20 g of the dried product obtained in step A4, place it in a dry pot, place it in a muffle furnace at 650°C, and incinerate it for 4 hours. Calculate whether the combustion residue is less than 1%. If the combustion residue is less than 1%, the dried product obtained in step A4 is a biomass porous carbon black material.

[0057] A5. The biomass porous carbon black material obtained in step A4 is placed in a high-pressure mixing pot at a speed of 420 rpm and a temperature of 80°C. A spray device is provided on the top of the high-pressure mixing pot, and an alcohol dilution of a silane coupling agent (SI-69) is configured. The silane coupling agent content is 50%. 10 kg of biomass porous carbon black material needs to be sprayed with 50 g of a 50% silane coupling agent alcohol dilution, 10 g each time, with an interval of 2 minutes (during which the high-pressure mixing pot is continuously stirred), and then the high-pressure mixing pot is continued to stir for 30 minutes, and the material is discharged. At this time, the treated biomass porous carbon black material is obtained.

[0058] B. Weigh a certain amount of ABS resin and put it into a stirring pot. Add a certain amount of wetting agent into the stirring pot and stir for 5 minutes until it is evenly stirred.

[0059] C. Add a certain amount of processing aid package and treated biomass porous carbon black material into the stirring pot and stir at high speed for 5 minutes to completely wrap the powder material on the outer surface of the ABS material;

[0060] D. Add the mixed materials into the main feed loss-in-weight scale;

[0061] E. Set the feed rate of the loss-in-weight scale to 35 kg / h, set the screw speed to 420 rpm, turn on the vacuum device, turn on the auxiliary equipment, and start granulation production.

[0062] Comparative Example 1:

[0063] 1. Weigh 100 parts of ABS and put it into a stirring pot. Add 0.5 parts of wetting agent into the stirring pot and stir for 5 minutes until it is evenly mixed.

[0064] 2. Add 1 part of processing aid package and 1 part of Cabot BP800 carbon black to the mixing pot and stir at high speed for 5 minutes to completely wrap the powder on the outer surface of the ABS material.

[0065] 4. Add the mixed materials into the main feed loss-in-weight scale.

[0066] 5. Set the discharge rate of the loss-in-weight scale to 35 kg / h, set the screw speed to 420 rpm, turn on the vacuum device, turn on the auxiliary equipment, and start granulation production.

[0067] Comparative Example 2:

[0068] 1. Weigh 95 parts of ABS and put it into a stirring pot. Add 0.5 parts of wetting agent into the stirring pot and stir for 5 minutes until it is evenly mixed.

[0069] 2. Add 1 part of processing aid package and 5 parts of inorganic adsorption deodorant (commercially available) to the mixing pot and stir at high speed for 5 minutes to completely wrap the powder on the outer surface of the ABS material.

[0070] 4. Add the mixed materials into the main feed loss-in-weight scale.

[0071] 5. Set the discharge rate of the loss-in-weight scale to 35 kg / h, set the screw speed to 420 rpm, turn on the vacuum device, turn on the auxiliary equipment, and start granulation production.

[0072] Comparative Example 3:

[0073] 1. Weigh 95 parts of ABS and put it into a stirring pot. Add 0.5 parts of wetting agent into the stirring pot and stir for 5 minutes until it is evenly mixed.

[0074] 2. Add 1 part of the processing aid package and 5 parts of the biomass carbon-silicon material powder (commercially available) into the mixing pot and stir at high speed for 5 minutes to completely wrap the powder on the outer surface of the ABS material.

[0075] 4. Add the mixed materials into the main feed loss-in-weight scale.

[0076] 5. Set the discharge rate of the loss-in-weight scale to 35 kg / h, set the screw speed to 420 rpm, turn on the vacuum device, turn on the auxiliary equipment, and start granulation production.

[0077] Comparative Example 4:

[0078] 1. Weigh 95 parts of ABS and put it into a stirring pot. Add 0.5 parts of wetting agent into the stirring pot and stir for 5 minutes until it is evenly mixed.

[0079] 2. Add 1 part of processing aid package and 5 parts of biomass porous carbon black material to the mixing pot and stir at high speed for 5 minutes to completely wrap the powder material on the outer surface of the ABS material.

[0080] 4. Add the mixed materials into the main feed loss-in-weight scale.

[0081] 5. Set the discharge rate of the loss-in-weight scale to 35 kg / h, set the screw speed to 420 rpm, turn on the vacuum device, turn on the auxiliary equipment, and start granulation production.

[0082] Comparative Example 5:

[0083] 1. Weigh 95 parts of ABS and put it into a stirring pot. Add 0.5 parts of wetting agent into the stirring pot and stir for 5 minutes until it is evenly mixed.

[0084] 2. Add 1 part of the processing aid package and 5 parts of a mixture of bromotriazine and antimony trioxide in a ratio of 14:2.5 (commercially available) into the mixing pot and stir at high speed for 5 minutes to completely coat the outer surface of the ABS material with the powder.

[0085] 4. Add the mixed materials into the main feed loss-in-weight scale.

[0086] 5. Set the discharge rate of the loss-in-weight scale to 35 kg / h, set the screw speed to 420 rpm, turn on the vacuum device, turn on the auxiliary equipment, and start granulation production.

[0087] Example 1:

[0088] 1. Weigh 100 parts of ABS and put it into a stirring pot. Add 0.5 parts of wetting agent into the stirring pot and stir for 5 minutes until it is evenly mixed.

[0089] 2. Add 1 portion of processing aid package to the mixing pot and stir at high speed for 5 minutes to completely wrap the powder on the outer surface of the ABS material.

[0090] 4. Add the mixed materials into the main feed loss-in-weight scale.

[0091] 5. Set the discharge rate of the loss-in-weight scale to 35 kg / h, set the screw speed to 420 rpm, turn on the vacuum device, turn on the auxiliary equipment, and start granulation production.

[0092] Example 2:

[0093] 1. Weigh 99 parts of ABS and put it into a stirring pot. Add 0.5 parts of wetting agent into the stirring pot and stir for 5 minutes until it is evenly mixed.

[0094] 2. Add 1 part of processing aid package and 1 part of treated biomass porous carbon black material to the mixing pot and stir at high speed for 5 minutes to completely wrap the powder material on the outer surface of the ABS material.

[0095] 4. Add the mixed materials into the main feed loss-in-weight scale.

[0096] 5. Set the discharge rate of the loss-in-weight scale to 35 kg / h, set the screw speed to 420 rpm, turn on the vacuum device, turn on the auxiliary equipment, and start granulation production.

[0097] Example 3:

[0098] 1. Weigh 97 parts of ABS and put it into a stirring pot. Add 0.5 parts of wetting agent into the stirring pot and stir for 5 minutes until it is evenly mixed.

[0099] 2. Add 1 part of the processing aid package and 3 parts of the treated biomass porous carbon black material to the mixing pot and stir at high speed for 5 minutes to completely wrap the powder material on the outer surface of the ABS material.

[0100] 4. Add the mixed materials into the main feed loss-in-weight scale.

[0101] 5. Set the discharge rate of the loss-in-weight scale to 35 kg / h, set the screw speed to 420 rpm, turn on the vacuum device, turn on the auxiliary equipment, and start granulation production.

[0102] Example 4:

[0103] 1. Weigh 95 parts of ABS and put it into a stirring pot. Add 0.5 parts of wetting agent into the stirring pot and stir for 5 minutes until it is evenly mixed.

[0104] 2. Add 1 part of the processing aid package and 5 parts of the treated biomass porous carbon black material to the mixing pot and stir at high speed for 5 minutes to completely wrap the powder material on the outer surface of the ABS material.

[0105] 4. Add the mixed materials into the main feed loss-in-weight scale.

[0106] 5. Set the discharge rate of the loss-in-weight scale to 35 kg / h, set the screw speed to 420 rpm, turn on the vacuum device, turn on the auxiliary equipment, and start granulation production.

[0107] It should be noted that if no specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the field or the product instructions shall be followed. If the manufacturers of the reagents or instruments are not specified, they are all conventional products that can be obtained commercially.

[0108] The present invention provides the component ratios of Comparative Examples 1 to 5, as shown in Table 1 (in parts by weight):

[0109] Table 1

[0110]

[0111] The present invention provides the composition ratios of Examples 1-4, as shown in Table 2 (in parts by weight):

[0112] Table 2

[0113]

[0114] The test results are shown in Table 3 below:

[0115] Table 3

[0116]

[0117] Reference standards:

[0118] Flexural strength: GB / T 9341-2008 Tensile strength: GB / T1040.2-2022

[0119] Combustion characteristics: GB / T 8410-2006 Odor: PV3900

[0120] Charpy notched impact strength: GB / T 1043.1-2008

[0121] Comparative Example 1 and Example 2 demonstrate that treated biomass porous carbon black can replace Cabot's BP800 carbon black in terms of color L value. Comparative Example 2 and Examples 2-4 demonstrate that inorganic adsorption deodorizers can reduce the odor of ABS materials, but the effect is less than ideal. Adding 5 parts of treated biomass porous carbon black reduces the odor level to level 3.

[0122] Examples 1-4 demonstrate that, in terms of combustion characteristics, increasing the amount of treated porous biomass carbon black reduces the burning rate of ABS. Comparative Example 5 demonstrates that adding a mixture of bromotriazine and antimony trioxide in a ratio of 14:2.5 can slow the burning rate of ABS, but significantly reduces the material's notched impact strength. Furthermore, the market price of bromotriazine and antimony trioxide is significantly higher than that of the treated porous biomass carbon black. Comparative Examples 3 and 4 demonstrate that while biomass carbon-silicon powder has a relatively small slowing effect on ABS, porous biomass carbon black has a significantly greater slowing effect. This is primarily due to the fact that biomass carbon-silicon powder contains a large amount of silica compared to porous biomass carbon black. Removing silica from porous biomass carbon black results in a large number of pores, which slows the burning rate of ABS. Comparative Example 4 and Example 4 demonstrate that the treated porous biomass carbon material significantly improves the material's odor and has little effect on the material's notched impact strength.

[0123] In summary, the above conclusions demonstrate that the treated porous biomass carbon black material can achieve the same color as Cabot BP800 at the same addition level, indicating that the treated porous biomass carbon black material can replace Cabot BP800 when dyeing black ABS. Furthermore, the treated porous biomass carbon black material, at a 5% addition level, can reduce the odor and combustion rate of ABS.

[0124] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A low-odor, slow-burning biomass porous carbon black modified ABS material, characterized in that: The composition is made of the following raw materials in parts by mass: ABS resin: 95-100 parts, Treated biomass porous carbon black material: 1-5 parts, Processing aid package: 1 part, Wetting agent: 0.5 parts; The treated biomass porous carbon black material is a biomass carbon-silicon material that has been desiliconized twice. Specifically, the biomass carbon-silicon material is selected and the exposed silica exposed on the carbon surface and the embedded silica wrapped by the carbon are removed in sequence, and then treated with a silane coupling agent to obtain a powdered material with a diameter of 10-25 microns.

2. The low-odor, slow-burning biomass porous carbon black modified ABS material according to claim 1, characterized in that: The ABS resin is prepared by a polymerization method of mechanical blending, emulsion polymerization or bulk polymerization.

3. The low-odor, slow-burning biomass porous carbon black modified ABS material according to claim 1, characterized in that: The processing aid package includes an antioxidant and a lubricant; wherein the antioxidant is obtained by compounding a hindered phenol and a phosphite antioxidant in a ratio of 1:2, the hindered phenol is at least one of 1010, 1076, and 1098, and the phosphite is at least one of 168 and 618; the lubricant is at least one of ethylene bisstearamide, pentaerythritol stearate, stearic acid, stearate, and polyethylene wax.

4. The low-odor, slow-burning biomass porous carbon black modified ABS material according to claim 1, characterized in that: The wetting agent is at least one of white oil and diffusion oil.

5. The method for preparing a low-odor, slow-burning biomass porous carbon black modified ABS material according to claim 1, characterized in that: The following steps are involved: Then treat it with a silane coupling agent; weigh ABS resin and put it into a stirring pot; add a wetting agent to the stirring pot and stir evenly; add the processing aid package and the treated biomass porous carbon black material to the stirring pot, stir evenly at high speed, and then add the mixed material to the main feed loss-in-weight scale; set the feed rate of the loss-in-weight scale to 35 kg / h, set the main screw speed to 420 rpm, turn on the auxiliary equipment, and start granulation production.

6. The method for preparing a low-odor, slow-burning biomass porous carbon black modified ABS material according to claim 5, characterized in that: The specific steps include: A. Select biomass carbon-silicon material powder, with silicon dioxide accounting for 45%-50% of the total weight, carbon accounting for 50%-55% of the total weight, and other components accounting for 0%-0.5% of the total weight. The particle size should be between 10-25 microns, and the following treatment should be performed: A1. Removal of exposed silica: The biochar-silicon material was reacted with an excess of 40% sodium hydroxide solution in a reactor at 60°C to remove silica and increase the pore ratio of the biochar-silicon material. The material was then rinsed repeatedly with deionized water, filtered, and placed in a large drying oven at 85°C, -0.6 MPa, and dried for 4 hours for later use. A1-1. Take 20 grams of the product obtained in step A1, place it in a dry pot, place it in a muffle furnace at 650°C, and incinerate for 4 hours. Calculate whether the combustion residue is less than 7%. If the combustion residue is less than 7%, step A1 is considered qualified, and the dried product obtained in step A1 is considered as biomass carbon black material; A2. Removal of embedded silica: In order to reduce the combustion residue of the biomass carbon black material to less than 1%, the biomass carbon black material of step A1 was mixed with sodium hydroxide powder in a weight ratio of 10:1.2, placed in a high-temperature furnace at 625°C in a nitrogen environment, and heated for 2.5 hours. The diameter of the sodium hydroxide powder was less than 0.1 mm; A3. Repeatedly rinse the material obtained in step A2 with deionized water until it becomes neutral, and then filter dry. A4. Place the biomass carbon black material obtained in step A3 into a vacuum oven at 85°C, -0.6 MPa, and dry for 4 hours. A4-1. Take 20 g of the dried product obtained in step A4, place it in a dry pot, place it in a muffle furnace at 650°C, and incinerate it for 4 hours. Calculate whether the combustion residue is less than 1%. If the combustion residue is less than 1%, the dried product obtained in step A4 is a biomass porous carbon black material. A5. Place the biomass porous carbon black material obtained in step A4 in a high mixing pot at a speed of 420 rpm and a temperature of 80°C. A spray device is provided on the top of the high mixing pot. A silane coupling agent alcohol dilution is configured. The silane coupling agent content is 50%. 10 kg of biomass porous carbon black material needs to be sprayed with 50 g of 50% silane coupling agent alcohol dilution, 10 g each time, at intervals of 2 minutes. Then, the high mixing pot is continued to stir for 30 minutes, and the material is discharged. At this time, it is the treated biomass porous carbon black material. B. Weigh a certain amount of ABS resin and put it into a stirring pot. Add a certain amount of wetting agent into the stirring pot and stir for 5 minutes until it is evenly stirred. C. Add a certain amount of processing aid package and treated biomass porous carbon black material into the stirring pot and stir at high speed for 5 minutes to completely wrap the powder material on the outer surface of the ABS material; D. Add the mixed materials into the main feed loss-in-weight scale; E. Set the feed rate of the loss-in-weight scale to 35 kg / h, set the screw speed to 420 rpm, turn on the vacuum device, turn on the auxiliary equipment, and start granulation production.

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