Low-odor slow-burning biomass porous carbon black modified ABS material and preparation method thereof

Abstract

The invention belongs to the technical field of plastic modification and dyeing, and relates to a low-odor slow-burning biomass porous carbon black modified ABS material and a preparation method thereof.The preparation method comprises the steps that a biomass carbon-silicon material is selected to be subjected to two times of silicon dioxide removal treatment, and then a coupling agent is used for treatment to form a treated biomass porous carbon black material; aBS resin is weighed and put into the stirring pot; adding a wetting agent into the stirring pot, and uniformly stirring; adding a processing aid bag and the treated biomass porous carbon black material into a stirring pot, uniformly stirring at a high speed, and adding the mixed material into a main feeding weightlessness scale; and setting the blanking amount of the weightlessness scale and the rotating speed of the screw rod, and carrying out granulation production. According to the method, under the condition that the impact strength, the bending strength and the tensile strength of a simply supported beam notch are guaranteed, and the simply supported beam notch has a dyeing function, the treated biomass porous carbon black material is used for modifying ABS, so that the odor and the combustion speed of the ABS material can be reduced, and the low-odor and slow-combustion functions are realized.

Description

Technical Field

[0001] The present 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] At present, the modified materials on the market can only meet some functional requirements and often lack in diversified functions. Moreover, multiple modifiers or additives are needed to make up for the deficiencies, resulting in products that cannot meet the requirements of diversified functions. The use of too many types of additives often causes rejection reactions and may also lead to unpredictable problems during later use. Therefore, when designing the formula, the formula should be simplified as much as possible and various problems should be considered comprehensively to meet the later use requirements. Automobiles have improved people's living efficiency, but they also bring some troubles. The odor source of automotive interior plastic parts is mainly volatile organic compounds, which will volatilize more rapidly in high-temperature environments and produce pungent odors. Common substances include benzene, aldehydes, ketones, etc. In addition, there are also some organic compounds such as ethers, esters, alcohols, amines, ketones, and alkanes, which will also emit specific odors, causing the material to have too strong an odor. The combustion characteristics of automotive interior materials (GB / T8410) are the characteristics that measure the combustion speed of automotive interior materials and can affect the combustion speed of automobiles in case of a fire, which is crucial for the safety of passengers. 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-bleeding, low-odor ABS material and a preparation method thereof. The material includes the following raw materials in parts by weight: 83-98 parts of ABS resin, 5-10 parts of graphene-based deodorant, and 0.2-0.9 parts of lubricant; the preparation method is to high-speed stir the raw material components in a high-speed mixer to obtain a premix; melt and extrude through a twin-screw extruder, and then carry out water cooling, pelletizing, and mixing evenly. Among them, the graphene-based deodorant is a product obtained by in-situ grafting hyperbranched polyamide and then chemically grafting MAH-g-SBS on amino-functionalized GO-TiO 2 Although the use of the graphene-based deodorant can achieve deodorization and reduce the odor of the material, the production of the deodorant is extremely complex, the cost is relatively high, and it is a chemical product, so it cannot be widely used in actual use due to price and environmental protection issues. The prior art also discloses an ABS slow-burning masterbatch, which is composed of the following components in weight percentage: 20-70% of polycarbonate, 0.01-70% of color powder, 2-20% of dispersant, 5-40% of flame retardant, and 0-50% of synergist. When the masterbatch is used for coloring ABS products, the combustion rate of the products meets the UL94, HB grades, but the cost of the flame retardant and synergist used is relatively high, and there are great difficulties in popularizing and using them.

[0004] In summary, in the existing technology, there is no ABS composite material that can simultaneously meet the requirements of low odor and slow combustion functions. Based on this, it is urgent to develop an ABS material with low price and slow combustion function, so that it can simultaneously meet the above two functions when modifying ABS, in order to effectively solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a low-odor, slow-combustion biomass porous carbon black modified ABS material and its preparation method, so as to solve the problem of realizing low-odor and slow-combustion functions in the state of adding a single modifier.

[0006] The purpose of the present invention is achieved through the following technical solutions: A low-odor, slow-combustion biomass porous carbon black modified ABS material is composed of the following raw materials according to mass parts: ABS resin: 95-100 parts, Treated biomass porous carbon black material: 0-5 parts, Processing aid package: 1 part, Wetting agent: 0.5 part.

[0007] Further, the ABS resin is prepared by a polymerization method of mechanical blending, emulsion polymerization or bulk polymerization.

[0008] Further, the treated biomass porous carbon black material is a powdery material with a diameter of 10-25 microns obtained by treating biomass carbon-silicon material with two desilicification treatments and then treating with a silane coupling agent.

[0009] Further, the processing aid package includes an antioxidant and a lubricant; wherein, the antioxidant is obtained by compounding hindered phenol-based and phosphite-based antioxidants in a ratio of 1:2, the hindered phenol-based is at least one of 1010, 1076, 1098, and the phosphite-based is at least one of 168, 618; the lubricant is mainly at least one of ethylene bisstearamide, pentaerythritol stearate, stearic acid, stearate, and polyethylene wax.

[0010] Further, the wetting agent is at least one of white oil and diffusion oil.

[0011] A low-odor, slow-burning biomass porous carbon black modified ABS material and its preparation method, comprising the following steps: Select biomass carbon-silicon materials and successively remove the exposed silica on the carbon surface and the intercalated silica wrapped by carbon, and then treat with a silane coupling agent; Weigh the ABS resin and put it into a stirring pot; Add a wetting agent to the stirring pot and stir evenly; Add a 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 into the main feeding loss-in-weight weigher; Set the feeding amount of the loss-in-weight weigher to 35 kg / h, set the main machine screw speed to 420 r / min, turn on the auxiliary equipment, and carry out granulation production.

[0012] Specifically, it includes the following steps: A. Select biomass carbon-silicon material powder, requiring that the silica accounts for 45%-50% of the total weight, the carbon accounts for 50%-55% of the total weight, and the remaining components account for 0%-0.5% of the total weight. The powder has a particle size between 10-25 microns, and carry out the following treatment: A1. Removal of exposed silica: React the biomass carbon-silicon material with an excessive amount of 40% sodium hydroxide solution in a reaction kettle at a temperature of 60°C to remove the silica therein, increase the pore ratio of the biomass carbon-silicon material, wash repeatedly with deionized water, filter dry, and put it into a large drying oven, 85°C, -0.6 MPa, and dry for 4 hours for standby; A1-1. Take 20 g of the product obtained in step A1 and place it in a dry pot, put it in a muffle furnace at 650°C, and ash it for 4 h. Calculate whether the combustion residue is less than 7%. When the combustion residue is less than 7%, step A1 is considered qualified, and the dried product obtained in step A1 is regarded as a biomass carbon black material; A2. Removal of intercalated silica: In order to reduce the combustion residue of the biomass carbon black material to less than 1%, mix the biomass carbon black material in step A1 with sodium hydroxide powder in a weight ratio of 10:1.2, put it into a high-temperature furnace in a nitrogen environment at 625°C, and heat for 2.5 hours. The diameter of the sodium hydroxide powder is less than 0.1 mm; A3. Repeatedly rinse the substance obtained in step A2 with deionized water until it is neutral, and filter dry; A4. Put the biomass carbon black material obtained in step A3 into a vacuum oven, 85°C, -0.6 MPa, and dry for 4 hours for standby; A4-1. Take 20 g of the dried product obtained in step A4 and place it in a dry pot, put it in a muffle furnace at 650°C, and ash it for 4 h. Calculate whether the combustion residue is less than 1%. When the combustion residue is less than 1%, the dried product obtained in step A4 is the biomass porous carbon black material; A5. Place the biomass porous carbon black material obtained in step A4 into a high-speed mixer. The rotation speed is 420 revolutions per minute, and the temperature of the high-speed mixer is 80 °C. There is a spraying device at the top of the high-speed mixer. Prepare an alcohol dilution of silane coupling agent (SI-69) with a silane coupling agent content of 50%. For 10 kg of biomass porous carbon black material, 50 g of 50% silane coupling agent alcohol dilution needs to be sprayed, 10 g each time, with an interval of 2 minutes (during which the high-speed mixer keeps stirring). Then, the high-speed mixer continues to stir for 30 minutes and discharges the material. At this time, it is the untreated biomass porous carbon black material.

[0013] B. Weigh a certain amount of ABS resin and put it into a stirring pot. Add a certain amount of wetting agent to the stirring pot and stir for 5 minutes until evenly mixed. C. Add a certain amount of processing aid package and the treated biomass porous carbon black material to the stirring pot and stir at high speed for 5 minutes to completely coat the powder material on the outer surface of the ABS material. D. Add the well-stirred material into the main feeding loss-in-weight weigher. E. Set the feeding rate of the loss-in-weight weigher to 35 kg / h, set the screw rotation speed to 420 revolutions per minute, turn on the vacuum device, turn on the auxiliary equipment, and carry out granulation production.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention provides a method for modifying ABS with a treated 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 great advantages in terms of functional diversification. 2. The carbon of the treated biomass porous carbon black material contains a large number of pores, and its specific surface area is several times its volume, which can adsorb small molecule substances in the modified ABS material, thereby reducing the overall odor of the material. 3. The modified ABS material with the treated biomass porous carbon black material can reduce the combustion rate of the composite material and achieve the purpose of slow combustion. Specifically, the flame retardant mechanism mainly includes the following aspects: Gas-phase flame retardant mechanism: The treated biomass porous carbon black material has a large number of micropores and mesopores inside, making its surface area far exceed its volume. These micropore and mesopore structures provide a huge adsorption capacity for the treated biomass porous carbon black material, and can effectively adsorb various gas and liquid molecules. Since oxygen is difficult to penetrate into the interior of the treated biomass porous carbon black material, even if it is ignited, combustion can only occur on the surface and cannot penetrate deep inside, resulting in incomplete combustion. According to the condensed-phase flame retardant mechanism, when the modified ABS material with the treated biomass porous carbon black material burns, a porous carbon layer will form on its surface; this carbon layer can insulate heat, isolate oxygen, and coat the combustible material, delaying the spread of the flame to the interior, thereby slowing down the combustion of the material. These mechanisms work together, making the modified ABS with the treated biomass porous carbon black material have excellent slow combustion performance and can effectively reduce the combustion rate of the material. Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0016] Figure 1 Flow chart of the treated biomass porous carbon black material. Detailed Embodiments

[0017] The present invention will be further described below in conjunction with embodiments: The present invention provides a low-odor, slow-burning biomass porous carbon black modified ABS material and a preparation method thereof. Among them, the treated biomass porous carbon black material used is a commercially available biomass carbon-silicon material powder, specifically made from plants containing a large amount of silicon dioxide (such as corn leaves, rice husks, wheat husks, etc.) as raw materials under the protection of an inert gas (nitrogen) at a high temperature (500 °C). It is required that the silicon dioxide accounts for 45%-50% of the total weight and is ground into a powder with a particle size D50 of 10-25 microns. The biomass carbon-silicon material reacts with an excessive amount of sodium hydroxide solution to remove the silicon dioxide exposed on the surface of the carbon. To further increase the proportion of pores, sodium hydroxide powder is mixed with the biomass carbon black material in proportion and heated at a high temperature to remove the silicon dioxide in the embedded pores. When the combustion residue is less than 1%, the dried product at this time is the biomass porous carbon black material. The treated biomass porous carbon black material is obtained by treating the biomass porous carbon black material with a coupling agent. Modifying ABS with the treated biomass porous carbon black material can reduce the odor and combustion rate of the material, so that the ABS modified material achieves the purpose of low odor and slow combustion.

[0018] The low-odor, slow-burning ABS material of the present invention is composed of the following raw materials in parts by mass: ABS resin: 95-100 parts, Treated biomass porous carbon black material: 0-5 parts, Processing aid package: 1 part, Wetting agent: 0.5 part.

[0019] The ABS resin is prepared by a polymerization method of mechanical blending, emulsion polymerization or bulk polymerization.

[0020] The biomass porous carbon black material is a powdery material with a diameter of 10-25 microns obtained by treating biomass carbon-silicon material after two desilicification processes with a silane coupling agent.

[0021] The processing aid package includes an antioxidant and a lubricant. Among them, the antioxidant is obtained by compounding hindered phenol antioxidants and phosphite antioxidants in a ratio of 1:2. The hindered phenol antioxidants are at least one of 1010, 1076, and 1098, and the phosphite antioxidants are at least one of 168 and 618. The lubricant is mainly at least one of ethylene bisstearamide (EBS), pentaerythritol stearate (PETS), stearic acid, stearate, and polyethylene wax.

[0022] The wetting agent is at least one of white oil and diffusion oil.

[0023] Low-odor, slow-burning biomass porous carbon black modified ABS material and its preparation method of the present invention include the following steps: Select biomass carbon-silicon materials for two times of silica removal treatment to form biomass porous carbon black materials, and then treat them with coupling agents to form treated biomass porous carbon black materials; Weigh ABS resin and compatibilizer and put them into a stirring pot, and stir evenly; Add a wetting agent to the stirring pot and stir evenly; Add a processing aid package and the treated biomass porous carbon black materials to the stirring pot, stir evenly at high speed, and then add the mixed materials into the main feeding loss-in-weight weigher. Set the feeding amount of the loss-in-weight weigher to 35 kg / hour, set the rotation speed of the main machine screw to 420 revolutions per minute, turn on the auxiliary equipment, and carry out granulation production.

[0024] Among them, the two times of silica removal treatment include the removal of exposed silica on the carbon surface and the removal of embedded pore silica wrapped by carbon.

[0025] Specifically, it includes the following steps: A. Select commercially available biomass carbon-silicon material powder, requiring that the silica accounts for 45%-50% of the total weight, the carbon accounts for 50%-55% of the total weight, and other components account for 0%-0.5% of the total weight, and the particle size is between 10-25 microns. The treatment method is as follows: A1. Removal of exposed silica: React the biomass carbon-silicon material with an excessive amount of 40% sodium hydroxide solution in a reaction kettle at a temperature of 60°C to remove the silica therein (SiO 2 +2NaOH = Na 2 SiO 3 +H 2 O), increase the pore ratio of the biomass carbon-silicon material, wash it repeatedly with deionized water, filter it dry, put it into a large drying oven, and dry it at 85°C and -0.6 MPa for 4 hours for standby; A1-1. Take 20 grams of the product obtained in step A1 and put it in a dry pot, place it in a muffle furnace at 650°C, and calcine it for 4 hours. Calculate whether the combustion residue is less than 7%. When the combustion residue is less than 7%, step A1 is considered qualified, and the dried product obtained in step A1 is considered a biomass carbon black material; A2. Removal of embedded pore silica: In order to reduce the combustion residue of the biomass carbon black material to less than 1%, mix the biomass carbon black material in step A1 with sodium hydroxide powder (diameter less than 0.1 mm) evenly according to a weight ratio of 10:1.2, and put it into a high-temperature furnace in a nitrogen environment at 625°C and heat it for 2.5 hours; A3. Rinse the substance obtained in step A2 repeatedly with deionized water until it is neutral, and filter it dry; A4. Put the biomass carbon black material obtained in step A3 into a vacuum oven, and dry it at 85°C and -0.6 MPa for 4 hours for standby; A4-1. Take 20 g of the dried product obtained in step A4 and place it in a dry pot. Put it into a muffle furnace at 650 °C and ashing for 4 h. Calculate whether the combustion residue is less than 1%. When the combustion residue is less than 1%, the dried product obtained in step A4 is the biomass porous carbon black material; A5. Place the biomass porous carbon black material obtained in step A4 into a high-speed mixer. The rotation speed is 420 revolutions per minute, the temperature of the high-speed mixer is 80 °C, and a spray device is provided at the top of the high-speed mixer. Prepare an alcohol dilution of silane coupling agent (SI-69) with a silane coupling agent content of 50%. For 10 kg of biomass porous carbon black material, 50 g of 50% silane coupling agent alcohol dilution needs to be sprayed. Spray 10 g each time, with an interval of 2 minutes (during which the high-speed mixer keeps stirring). Then the high-speed mixer continues to stir for 30 minutes and discharge the material. At this time, it is the treated biomass porous carbon black material.

[0026] B. Weigh a certain amount of ABS resin and put it into a stirring pot. Add a certain amount of wetting agent to the stirring pot and stir for 5 minutes until evenly mixed; C. Add a certain amount of processing aid package and the treated biomass porous carbon black material to the stirring pot and stir at high speed for 5 minutes to completely coat the powder material on the outer surface of the ABS material; D. Add the well-stirred material into the main feeding loss-in-weight weigher; E. Set the feeding rate of the loss-in-weight weigher to 35 kg / h, set the screw rotation speed to 420 revolutions per minute, turn on the vacuum device, turn on the auxiliary equipment, and carry out granulation production.

[0027] Comparative Example 1: 1. Weigh 100 parts of ABS and put it into a stirring pot. Add 0.5 part of wetting agent to the stirring pot and stir for 5 minutes until evenly mixed.

[0028] 2. Add 1 part of processing aid package and 1 part of Cabot BP800 carbon black to the stirring pot and stir at high speed for 5 minutes to completely coat the powder material on the outer surface of the ABS material.

[0029] 4. Add the well-stirred material into the main feeding loss-in-weight weigher.

[0030] 5. Set the feeding rate of the loss-in-weight weigher to 35 kg / h, set the screw rotation speed to 420 revolutions per minute, turn on the vacuum device, turn on the auxiliary equipment, and carry out granulation production.

[0031] Comparative Example 2: 1. Weigh 95 parts of ABS and put it into a stirring pot. Add 0.5 part of wetting agent to the stirring pot and stir for 5 minutes until evenly mixed.

[0032] 2. Add 1 part of processing aid package and 5 parts of inorganic adsorbent deodorant (commercially available) to the mixing pot, and carry out high-speed stirring for 5 minutes to completely wrap the powder substances on the outer surface of the ABS material.

[0033] 4. Add the well-stirred material into the main feeding loss-in-weight weigher.

[0034] 5. Set the feeding rate of the loss-in-weight weigher at 35 kg / h, set the screw rotation speed at 420 rpm, turn on the vacuum device and the auxiliary equipment, and carry out granulation production.

[0035] Comparative Example 3: 1. Weigh 95 parts of ABS and put it into the mixing pot. Add 0.5 part of wetting agent to the mixing pot and stir for 5 minutes until evenly mixed.

[0036] 2. Add 1 part of processing aid package and 5 parts of biomass carbon-silicon material powder (commercially available) to the mixing pot, and carry out high-speed stirring for 5 minutes to completely wrap the powder substances on the outer surface of the ABS material.

[0037] 4. Add the well-stirred material into the main feeding loss-in-weight weigher.

[0038] 5. Set the feeding rate of the loss-in-weight weigher at 35 kg / h, set the screw rotation speed at 420 rpm, turn on the vacuum device and the auxiliary equipment, and carry out granulation production.

[0039] Comparative Example 4: 1. Weigh 95 parts of ABS and put it into the mixing pot. Add 0.5 part of wetting agent to the mixing pot and stir for 5 minutes until evenly mixed.

[0040] 2. Add 1 part of processing aid package and 5 parts of biomass porous carbon black material to the mixing pot, and carry out high-speed stirring for 5 minutes to completely wrap the powder substances on the outer surface of the ABS material.

[0041] 4. Add the well-stirred material into the main feeding loss-in-weight weigher.

[0042] 5. Set the feeding rate of the loss-in-weight weigher at 35 kg / h, set the screw rotation speed at 420 rpm, turn on the vacuum device and the auxiliary equipment, and carry out granulation production.

[0043] Comparative Example 5: 1. Weigh 95 parts of ABS and put it into the mixing pot. Add 0.5 part of wetting agent to the mixing pot and stir for 5 minutes until evenly mixed.

[0044] 2. Add 1 part of processing aid package and 5 parts of a mixture of brominated triazine and antimony trioxide in a ratio of 14:2.5 (commercially available) to the mixing pot, and carry out high-speed stirring for 5 minutes to completely wrap the powder substances on the outer surface of the ABS material.

[0045] 4. Add the well - stirred materials into the main feeding loss - in - weight weigher.

[0046] 5. Set the feeding rate of the loss - in - weight weigher at 35 kg / h, set the screw rotation speed at 420 rpm, turn on the vacuum device and the auxiliary equipment, and carry out granulation production.

[0047] Example 1: 1. Weigh 100 parts of ABS and put it into the stirring pot. Add 0.5 part of wetting agent into the stirring pot and stir for 5 minutes until evenly mixed.

[0048] 2. Add 1 part of processing aid package into the stirring pot and carry out high - speed stirring for 5 minutes to completely wrap the powder substances on the outer surface of the ABS material.

[0049] 4. Add the well - stirred materials into the main feeding loss - in - weight weigher.

[0050] 5. Set the feeding rate of the loss - in - weight weigher at 35 kg / h, set the screw rotation speed at 420 rpm, turn on the vacuum device and the auxiliary equipment, and carry out granulation production.

[0051] Example 2: 1. Weigh 99 parts of ABS and put it into the stirring pot. Add 0.5 part of wetting agent into the stirring pot and stir for 5 minutes until evenly mixed.

[0052] 2. Add 1 part of processing aid package and 1 part of treated biomass porous carbon black material into the stirring pot and carry out high - speed stirring for 5 minutes to completely wrap the powder substances on the outer surface of the ABS material.

[0053] 4. Add the well - stirred materials into the main feeding loss - in - weight weigher.

[0054] 5. Set the feeding rate of the loss - in - weight weigher at 35 kg / h, set the screw rotation speed at 420 rpm, turn on the vacuum device and the auxiliary equipment, and carry out granulation production.

[0055] Example 3: 1. Weigh 97 parts of ABS and put it into the stirring pot. Add 0.5 part of wetting agent into the stirring pot and stir for 5 minutes until evenly mixed.

[0056] 2. Add 1 part of processing aid package and 3 parts of treated biomass porous carbon black material into the stirring pot and carry out high - speed stirring for 5 minutes to completely wrap the powder substances on the outer surface of the ABS material.

[0057] 4. Add the well - stirred materials into the main feeding loss - in - weight weigher.

[0058] 5. Set the feeding rate of the loss - in - weight weigher at 35 kg / h, set the screw rotation speed at 420 rpm, turn on the vacuum device and the auxiliary equipment, and carry out granulation production.

[0059] Example 4: 1. Weigh 95 parts of ABS and put it into the stirring pot. Add 0.5 part of wetting agent to the stirring pot and stir for 5 minutes until evenly mixed.

[0060] 2. Add 1 part of processing aid package and 5 parts of treated biomass porous carbon black material to 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.

[0061] 4. Add the well-stirred material into the main feeding loss-in-weight weigher.

[0062] 5. Set the feeding rate of the loss-in-weight weigher to 35 kg / h, set the screw rotation speed to 420 rpm, turn on the vacuum device and auxiliary equipment, and carry out granulation production.

[0063] It should be noted that for those without specific technologies or conditions indicated in the examples, they shall be carried out according to the technologies or conditions described in the literature in this field or according to the product instructions. For those reagents or instruments without the manufacturer indicated, they are all conventional products that can be obtained through commercial purchase.

[0064] The present invention provides the component ratios of Comparative Examples 1 - 5 as shown in Table 1 (by weight): Table 1

[0065] The present invention provides the component ratios of Examples 1 - 4 as shown in Table 2 (by weight): Table 2

[0066] The above test results are shown in Table 3 below: Table 3

[0067] Reference standards: Flexural strength: GB / T 9341 - 2008 Tensile strength: GB / T1040.2 - 2022 Combustion characteristics: GB / T 8410 - 2006 Odor: PV3900 Notched Izod impact strength of simply supported beam: GB / T 1043.1 - 2008 It can be seen from Comparative Example 1 and Example 2 that in terms of color L value, the treated biomass porous carbon black material can replace Cabot's BP800 type carbon black. It can be seen from Comparative Example 2 and Examples 2 - 4 that the inorganic adsorption type deodorant can reduce the odor of the ABS material, but the effect is not ideal enough. When 5 parts of the treated biomass porous carbon black material are added, the odor can reach Grade 3.

[0068] It can be seen from Examples 1 - 4 that in terms of combustion characteristics, as the addition amount of the treated biomass porous carbon black material increases, the combustion rate of ABS can be reduced. It can be seen from Comparative Example 5 that adding a mixture of brominated triazine and antimony trioxide in a ratio of 14:2.5 can delay the combustion rate of the ABS material, but it will cause a significant decrease in the notched impact strength of the simply supported beam of the material. Moreover, the market price of brominated triazine and antimony trioxide is much higher than that of the treated biomass porous carbon black material. It can be seen from Comparative Example 3 and Comparative Example 4 that the biomass carbon - silicon material powder has a minor flame - retardant effect on the ABS material, while the biomass porous carbon black material can have a greater flame - retardant effect on the ABS material. The main reason is that the biomass carbon - silicon material powder contains a large amount of silicon dioxide compared with the biomass porous carbon black material, and the biomass porous carbon black material after removing silicon dioxide will form a large number of pores, thus achieving the purpose of delaying the combustion rate of the ABS material. It can be seen from Comparative Example 4 and Example 4 that the treated biomass porous carbon material can significantly improve the odor of the material and basically has no impact on the notched impact strength of the simply supported beam of the material.

[0069] In summary: Based on the above conclusions, when the addition amount is the same, the treated biomass porous carbon black material can achieve the same color as Cabot BP800, indicating that when dyeing black ABS, the treated biomass porous carbon black material can replace Cabot BP800 carbon black. Moreover, when 5% of the treated biomass porous carbon black material is added, it can reduce the odor of the ABS material and the combustion rate of the ABS material.

[0070] Note that the above is only the preferred embodiment of the present invention and the applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here. Various obvious changes, re - adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, it can also include more other equivalent embodiments, and 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 based on the following raw materials in parts by mass: ABS resin: 95-100 parts, Treated biomass porous carbon black material: 0-5 parts, Processing aid package: 1 portion, Wetting agent: 0.5 parts.

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 treated biomass porous carbon black material is a powder 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.

4. 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 mainly at least one of ethylene bisstearamide, pentaerythritol stearate, stearic acid, stearate, and polyethylene wax.

5. 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.

6. 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: Select biomass carbon-silicon material, remove the exposed silica on the carbon surface and the embedded porous silica wrapped by the carbon in turn, and then treat it with a silane coupling agent; weigh ABS resin and put it into a stirring pot; add a wetting agent into the stirring pot and stir evenly; add a processing aid package and treated biomass porous carbon black material into 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 / hour, set the main engine screw speed to 420 rpm, start the auxiliary equipment, and carry out granulation production.

7. The method for preparing a low-odor, slow-burning biomass porous carbon black modified ABS material according to claim 6, characterized in that: The specific steps include: A. Select biomass carbon-silicon material powder, requiring that silicon dioxide accounts for 45%-50% of the total weight, carbon accounts for 50%-55% of the total weight, and the remaining components account for 0%-0.5% of the total weight of the powder, with a particle size between 10-25 microns, and perform the following treatment: A1. Removal of exposed silicon dioxide: The biomass carbon-silicon material is reacted with an excess of 40% sodium hydroxide solution in a reactor at a temperature of 60°C to remove the silicon dioxide therein and increase the proportion of pores in the biomass carbon-silicon material. The material is repeatedly washed with deionized water, filtered and dried, and placed in a large drying oven at 85°C, -0.6MPa, and dried for 4 hours for use; A1-1. Take 20 grams of the product obtained in step A1 and put 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 and the sodium hydroxide powder are evenly mixed in a weight ratio of 10:1.2, placed in a high-temperature furnace in a nitrogen environment at 625°C, and heated for 2.5 hours. The diameter of the sodium hydroxide powder is less than 0.1 mm; A3. Repeatedly rinse the substance obtained in step A2 with deionized water until it becomes neutral, and filter dry; A4. Place the biomass carbon black material obtained in step A3 into a vacuum oven at 85°C, -0.6MPa, and dry for 4 hours for later use; A4-1. Take 20 grams of the dried product obtained in step A4 and put 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, the biomass porous carbon black material obtained in step A4 is placed in a high mixing pot, the speed is 420 rpm, the temperature of the high mixing pot is 80 ° C, the top of the high mixing pot is provided with a spray device, the alcohol dilution of the silane coupling agent is configured, the silane coupling agent content is 50%, 10 kg of biomass porous carbon black material needs to be sprayed with 50 grams of 50% silane coupling agent alcohol dilution, 10 grams are sprayed each time, the interval is 2 minutes, then, the high mixing pot continues to stir for 30 minutes, discharge, and the biomass porous carbon black material is treated at this time; 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 stirred 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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