CN111117301A - Preparation method and application of modified carbon black - Google Patents
Preparation method and application of modified carbon black Download PDFInfo
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- CN111117301A CN111117301A CN202010016409.8A CN202010016409A CN111117301A CN 111117301 A CN111117301 A CN 111117301A CN 202010016409 A CN202010016409 A CN 202010016409A CN 111117301 A CN111117301 A CN 111117301A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/544—Silicon-containing compounds containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
- C09C1/56—Treatment of carbon black ; Purification
- C09C1/565—Treatment of carbon black ; Purification comprising an oxidative treatment with oxygen, ozone or oxygenated compounds, e.g. when such treatment occurs in a region of the furnace next to the carbon black generating reaction zone
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
Abstract
The invention provides a preparation method and application of modified carbon black, relating to the technical field of carbon black, and comprising the following steps of 1) putting carbon black into a three-neck flask, and adding 7-9mol/L nitric acid solution into the three-neck flask for oxidation to obtain oxidized carbon black; 2) adding the carbon black obtained in the step 1) and toluene diisocyanate into a three-neck flask, taking toluene as a solvent, dropwise adding triethylamine as an acid-binding agent, and reacting to obtain isocyanated carbon black; 3) putting the isocyanated carbon black obtained in the step 2), formaldehyde and 20% sodium hydroxide solution into a three-neck flask, and reacting to obtain the modified carbon black. The modified carbon black prepared by the invention enhances the dispersion stability and compatibility of the carbon black and a polymer matrix, reduces the surface energy of the carbon black and enables the carbon black to have excellent comprehensive properties.
Description
Technical Field
The invention relates to the technical field of carbon black, in particular to a preparation method and application of modified carbon black.
Background
Since the new world, the rapid progress of the modern economic society brings the development of the well-jet type to the automobile industry and simultaneously drives the development of the automobile related industries such as the tire industry. Although the new energy automobile industry is rapidly growing up and occupies a part of market share, the traditional dye automobile still occupies a large part of market share, and the huge consumption of energy and serious environmental pollution are caused. As an indispensable part of automobiles, wear and consumption of tires are also one of important causes of energy consumption and environmental pollution.
Since it is difficult to satisfy the severe requirements of tires using a single raw rubber, it is necessary to add a vulcanization system, a reinforcing filler system, and the like to the tire formulation. The filling and reinforcing system is one of indispensable raw materials in the tire industry, the rubber containing the filling and reinforcing system is a multi-phase composite material, and fillers such as carbon black, white carbon black and the like can endow the rubber material with higher hardness and modulus, greatly improve the mechanical strength and wear resistance of the rubber material, and influence the rolling resistance, skid resistance and other dynamic properties of the rubber material.
Carbon black is a product formed by incomplete combustion or cracking of hydrocarbon substances from petroleum and coal tar, and generally refers to a family of chemical products such as furnace carbon black, tank carbon black, new process carbon black and the like, the properties of carbon black produced by different processes are different, and each carbon black can endow a certain group of properties to a polymer.
The carbon black produced by the prior art is used as a reinforcing agent for manufacturing a rubber material of a tire, and some adverse side effects such as increased hysteresis loss and the like often exist, so that the research of a carbon black material with good reinforcing performance and good comprehensive performance is a technical problem to be solved in the field at present.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a preparation method and application of modified carbon black, the modified carbon black prepared by the invention enhances the dispersion stability and compatibility of the carbon black and a polymer matrix, reduces the surface energy of the carbon black, and enables the carbon black to have excellent comprehensive properties.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a preparation method of modified carbon black comprises the following steps:
1) putting carbon black into a three-neck flask, adding 7-9mol/L nitric acid solution, stirring at the reaction temperature of 60-70 ℃, carrying out reflux reaction for 4-10h, then repeatedly filtering a reaction product to be neutral by using a Buchner funnel, putting the filtered carbon black into an electric heating constant-temperature air blast drying box, and drying at the temperature of 40-50 ℃ to constant weight to obtain oxidized carbon black;
2) adding the carbon black obtained in the step 1) and toluene diisocyanate into a three-neck flask, taking toluene as a solvent, dropwise adding triethylamine as an acid-binding agent, carrying out ice bath reaction for 45-60min, heating to 100-90 ℃, continuously reacting for 45-60min, and carrying out rotary evaporation on a reaction product at 80-90 ℃ to remove unreacted toluene diisocyanate to obtain isocyanated carbon black;
3) putting the isocyanated carbon black obtained in the step 2), formaldehyde and 20% sodium hydroxide solution into a three-neck flask, stirring at the constant temperature of 50-60 ℃, carrying out reflux reaction for 6-8h under the nitrogen atmosphere condition, repeatedly filtering to be neutral after the reaction is finished, and drying at the temperature of 40-50 ℃ to constant weight to obtain the modified carbon black.
Further, the specification of the carbon black used in the step 1) is one of N330, N550 and N880.
Further, the mass volume ratio of the carbon black to the nitric acid in the step 1) is 1g:25-30 ml.
Further, the mass ratio of the oxidized carbon black to the toluene diisocyanate and the triethylamine in the step 2) is 1:0.3-0.6: 0.1-0.2.
Further, the mass volume ratio of the isocyanated carbon black to the formaldehyde and 20% sodium hydroxide solution in the step 3) is 1g:8-10ml:1 ml.
Modified carbon black is prepared by the preparation method.
The modified carbon black prepared by the preparation method is applied to the field of preparation of automobile tire rubber materials.
The automobile tire rubber material raw material comprises, by weight, 90-110 parts of styrene butadiene rubber, 2-4 parts of zinc oxide, 1-3 parts of stearic acid, 1-3 parts of an anti-aging agent RD, 2-6 parts of N- β aminoethyl-gamma aminopropyltrimethoxysilane, 0.8-2 parts of an accelerator CZ, 1-2.6 parts of sulfur and 40-60 parts of modified carbon black.
Furthermore, the automobile tire rubber material raw material comprises, by weight, 101 parts of styrene butadiene rubber, 3 parts of zinc oxide, 2 parts of stearic acid, 1.8 parts of an anti-aging agent RD, 4 parts of N- β aminoethyl-gamma aminopropyl trimethoxysilane, 1.3 parts of an accelerator CZ, 1.6 parts of sulfur and 50 parts of modified carbon black.
Further, the preparation method of the automobile tire rubber material comprises the steps of placing styrene butadiene rubber into an internal mixer for plastication for 1-3min, adding zinc oxide, stearic acid, N- β aminoethyl-gamma aminopropyltrimethoxysilane and modified carbon black, mixing for 15-25min at 65-75 ℃ to enable the styrene butadiene rubber and the rubber to be mixed uniformly, cooling to room temperature after mixing is finished, adding an anti-aging agent RD, an accelerator CZ and sulfur, mixing uniformly, discharging, cooling, standing for more than 20h, vulcanizing a sample by using a flat plate vulcanizing machine, wherein the vulcanization condition is 155 ℃ 16MPa (t & ltt & gt)90+2) min to obtain the automobile tyre rubber material.
(III) advantageous effects
The invention provides a preparation method and application of modified carbon black, wherein after carbon black is oxidized, oxygen-containing functional groups such as-OH, -COOH and the like can be generated on the surface of the carbon black, the oxygen-containing functional groups reduce the pH value of the surface of the carbon black and increase the polarity of the surface of the carbon black, and in addition, as-OH carries a free electron, the electron cloud density of the surface of the carbon black is increased, so that the surface activity of the carbon black is increased. The oxidized carbon black reacts with toluene diisocyanate to enable the carbon black to be isocyanated, so that the carbon black can conveniently react with formaldehyde and sodium hydroxide, and the surface of the carbon black contains various groups.
The modified carbon black prepared by the invention is used as a reinforcing agent of an automobile tire rubber material, has stronger interaction with styrene butadiene rubber, contains two kinds of alkylamino and alkoxy with amphiphilic activity simultaneously by using N- β aminoethyl-gamma aminopropyltrimethoxysilane as a coupling agent, further increases the surface groups of the carbon black, can obviously enhance the comprehensive properties of the rubber material, such as tensile strength, elongation, wear resistance and the like, and has wide application prospect.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a preparation method of modified carbon black comprises the following steps:
1) putting 10g of carbon black N330 into a three-neck flask, adding 25ml of 9mol/L nitric acid solution, stirring and refluxing for reaction at the reaction temperature of 60-70 ℃ for 8h, then repeatedly filtering a reaction product to be neutral by using a Buchner funnel, putting the filtered carbon black into an electric heating constant-temperature air blast drying box, and drying at the temperature of 40-50 ℃ to constant weight to obtain oxidized carbon black;
2) adding 30g of the carbon black obtained in the step 1) and 1.2g of toluene diisocyanate into a three-neck flask, taking toluene as a solvent, dropwise adding 0.5g of triethylamine as an acid-binding agent, reacting in an ice bath for 50min, heating to 105 ℃, continuing to react for 50min, and carrying out rotary evaporation on a reaction product at 80-90 ℃ to remove unreacted toluene diisocyanate to obtain isocyanated carbon black;
3) putting 20g of isocyanated carbon black obtained in the step 2), 20ml of formaldehyde and 2ml of 20% sodium hydroxide solution into a three-neck flask, stirring at a constant temperature of 60 ℃, carrying out reflux reaction for 6 hours under the condition of nitrogen atmosphere, repeatedly filtering to be neutral after the reaction is finished, and drying at 40-50 ℃ to constant weight to obtain the modified carbon black.
The modified carbon black prepared by the preparation method is applied to the field of preparation of automobile tire rubber materials.
The automobile tire rubber material comprises, by weight, 101 parts of styrene butadiene rubber, 3 parts of zinc oxide, 2 parts of stearic acid, 1.8 parts of an anti-aging agent RD, 4 parts of N- β aminoethyl-gamma aminopropyl trimethoxysilane, 1.3 parts of a promoter CZ, 1.6 parts of sulfur and 50 parts of modified carbon black.
The preparation method of the automobile tire rubber material comprises the steps of placing styrene butadiene rubber into an internal mixer for plasticating for 2min, adding zinc oxide, stearic acid, N- β aminoethyl-gamma aminopropyltrimethoxysilane and modified carbon black, mixing for 20min at 65-75 ℃, mixing uniformly with rubber, cooling to room temperature after mixing is finished, adding an anti-aging agent RD, an accelerator CZ and sulfur, mixing uniformly, discharging, cooling and standing for more than 20h, vulcanizing a sample by using a flat vulcanizing machine under the vulcanization condition of 155 ℃ 16MPa (t90+2) min, and obtaining the automobile tire rubber material.
Example 2:
a preparation method of modified carbon black comprises the following steps:
1) putting 10g of carbon black N550 into a three-neck flask, adding 25ml of 7mol/L nitric acid solution, stirring and refluxing for 10h at the reaction temperature of 60-70 ℃, then repeatedly filtering a reaction product to be neutral by using a Buchner funnel, putting the filtered carbon black into an electric heating constant-temperature air blast drying oven, and drying at the temperature of 40-50 ℃ to constant weight to obtain oxidized carbon black;
2) adding 30g of the carbon black obtained in the step 1) and 1.8g of toluene diisocyanate into a three-neck flask, taking toluene as a solvent, dropwise adding 0.4g of triethylamine as an acid-binding agent, carrying out ice bath reaction for 45min, heating to 100 ℃ and 110 ℃, continuing to react for 45min, and carrying out rotary evaporation on the reaction product at 80-90 ℃ to remove unreacted toluene diisocyanate to obtain isocyanated carbon black;
3) putting 20g of isocyanated carbon black obtained in the step 2), 20ml of formaldehyde and 2ml of 20% sodium hydroxide solution into a three-neck flask, stirring at a constant temperature of 50-60 ℃, carrying out reflux reaction for 6 hours under the condition of nitrogen atmosphere, repeatedly filtering to be neutral after the reaction is finished, and drying at 40-50 ℃ to constant weight to obtain modified carbon black;
the modified carbon black prepared by the preparation method is applied to the field of preparation of automobile tire rubber materials.
The automobile tire rubber material comprises, by weight, 95 parts of styrene butadiene rubber, 3 parts of zinc oxide, 1 part of stearic acid, 1.5 parts of an anti-aging agent RD, 4 parts of N- β aminoethyl-gamma aminopropyl trimethoxysilane, 1.5 parts of a promoter CZ, 1.8 parts of sulfur and 45 parts of modified carbon black.
The preparation method of the automobile tire rubber material comprises the steps of placing styrene butadiene rubber into an internal mixer for plasticating for 3min, adding zinc oxide, stearic acid, N- β aminoethyl-gamma aminopropyltrimethoxysilane and modified carbon black, mixing for 25min at 65-75 ℃, mixing uniformly with rubber, cooling to room temperature after mixing is finished, adding an anti-aging agent RD, an accelerator CZ and sulfur, mixing uniformly, discharging, cooling and standing for more than 20h, vulcanizing a sample by using a flat vulcanizing machine under the vulcanization condition of 155 ℃ 16MPa (t90+2) min, and obtaining the automobile tire rubber material.
Example 3:
a preparation method of modified carbon black comprises the following steps:
1) putting 10g of carbon black N880 into a three-neck flask, adding 30ml of 7mol/L nitric acid solution, stirring and carrying out reflux reaction at the reaction temperature of 60-70 ℃ for 4h, then repeatedly filtering a reaction product to be neutral by using a Buchner funnel, putting the filtered carbon black into an electric heating constant-temperature air blast drying box, and drying at the temperature of 40-50 ℃ to constant weight to obtain oxidized carbon black;
2) adding 30g of the carbon black obtained in the step 1) and 1.6g of toluene diisocyanate into a three-neck flask, taking toluene as a solvent, dropwise adding 0.5g of triethylamine as an acid-binding agent, carrying out ice bath reaction for 60min, heating to 100 ℃ and 110 ℃, continuing to react for 60min, and carrying out rotary evaporation on the reaction product at 80-90 ℃ to remove unreacted toluene diisocyanate to obtain isocyanated carbon black;
3) putting 20g of isocyanated carbon black obtained in the step 2), 16ml of formaldehyde and 2ml of 20% sodium hydroxide solution into a three-neck flask, stirring at a constant temperature of 50-60 ℃, carrying out reflux reaction for 7 hours under the condition of nitrogen atmosphere, repeatedly filtering to be neutral after the reaction is finished, and drying at 40-50 ℃ to constant weight to obtain modified carbon black;
the modified carbon black prepared by the preparation method is applied to the field of preparation of automobile tire rubber materials.
The automobile tire rubber material comprises, by weight, 110 parts of styrene butadiene rubber, 4 parts of zinc oxide, 3 parts of stearic acid, 3 parts of an anti-aging agent RD, 5 parts of N- β aminoethyl-gamma aminopropyltrimethoxysilane, 1.7 parts of a promoter CZ, 2.5 parts of sulfur and 60 parts of modified carbon black.
The preparation method of the automobile tire rubber material comprises the steps of placing styrene butadiene rubber into an internal mixer for plasticating for 3min, adding zinc oxide, stearic acid, N- β aminoethyl-gamma aminopropyltrimethoxysilane and modified carbon black, mixing for 20min at 65-75 ℃, mixing uniformly with rubber, cooling to room temperature after mixing is finished, adding an anti-aging agent RD, an accelerator CZ and sulfur, mixing uniformly, discharging, cooling and standing for more than 20h, vulcanizing a sample by using a flat vulcanizing machine under the vulcanization condition of 155 ℃ 16MPa (t90+2) min, and obtaining the automobile tire rubber material.
Comparative example:
the comparative example differs from example 1 in that: in the comparative example, the modified carbon black N330 in the raw material component for preparing the automobile tire rubber material is replaced by the unmodified N330, and the using amount is the same, and other components in the raw material, the using amount and the preparation method are the same as those in the example 1.
The automobile tire rubber compounds prepared in examples 1 to 3 of the present invention and comparative example were subjected to performance tests, and the test results are shown in table 1.
Table 1:
| tensile Strength (MPa) | Elongation% | 300% definite elongation (MPa) | |
| Comparative example | 25.9 | 540 | 8.5 |
| Example 1 | 28.1 | 620 | 7.6 |
| Example 2 | 27.4 | 615 | 7.4 |
| Example 3 | 27.6 | 608 | 7.5 |
In summary, the embodiment of the invention has the following beneficial effects: the tensile strength, the elongation and the 300% fixed-elongation effect of the automobile tire rubber material prepared by using the modified carbon black prepared in the embodiments 1-3 of the invention are all superior to those of the automobile tire rubber material prepared by using unmodified carbon black, which shows that the modified carbon black prepared by the invention has a remarkable effect on enhancing the rubber performance.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A preparation method of modified carbon black is characterized by comprising the following steps:
1) putting carbon black into a three-neck flask, adding 7-9mol/L nitric acid solution, stirring at the reaction temperature of 60-70 ℃, carrying out reflux reaction for 4-10h, then repeatedly filtering a reaction product to be neutral by using a Buchner funnel, putting the filtered carbon black into an electric heating constant-temperature air blast drying box, and drying at the temperature of 40-50 ℃ to constant weight to obtain oxidized carbon black;
2) adding the carbon black obtained in the step 1) and toluene diisocyanate into a three-neck flask, taking toluene as a solvent, dropwise adding triethylamine as an acid-binding agent, carrying out ice bath reaction for 45-60min, heating to 100-90 ℃, continuously reacting for 45-60min, and carrying out rotary evaporation on a reaction product at 80-90 ℃ to remove unreacted toluene diisocyanate to obtain isocyanated carbon black;
3) putting the isocyanated carbon black obtained in the step 2), formaldehyde and 20% sodium hydroxide solution into a three-neck flask, stirring at the constant temperature of 50-60 ℃, carrying out reflux reaction for 6-8h under the nitrogen atmosphere condition, repeatedly filtering to be neutral after the reaction is finished, and drying at the temperature of 40-50 ℃ to constant weight to obtain the modified carbon black.
2. The method of claim 1, wherein the carbon black used in step 1) is one of N330, N550, and N880.
3. The method for producing a modified carbon black according to claim 1, wherein the mass-to-volume ratio of the carbon black and the nitric acid in step 1) is 1g:25 to 30 ml.
4. The method for producing modified carbon black according to claim 1, wherein the mass ratio of the oxidized carbon black to the toluene diisocyanate and the triethylamine in the step 2) is 1:0.3 to 0.6:0.1 to 0.2.
5. The method for producing modified carbon black according to claim 1, wherein the mass-to-volume ratio of the isocyanated carbon black to the formaldehyde and 20% sodium hydroxide solution in the step 3) is 1g:8 to 10ml:1 ml.
6. A modified carbon black produced by the production method according to any one of claims 1 to 5.
7. Use of the modified carbon black of claim 6 in the preparation of an automotive tire compound.
8. The application of the modified carbon black in preparing an automobile tire rubber material according to claim 7, wherein the automobile tire rubber material comprises, by weight, 90-110 parts of styrene-butadiene rubber, 2-4 parts of zinc oxide, 1-3 parts of stearic acid, 1-3 parts of an anti-aging agent RD, 2-6 parts of N- β aminoethyl-gamma aminopropyltrimethoxysilane, 0.8-2 parts of an accelerator CZ, 1-2.6 parts of sulfur and 40-60 parts of modified carbon black.
9. The application of the modified carbon black in preparing an automobile tire rubber material according to claim 7, wherein the automobile tire rubber material comprises, by weight, 101 parts of styrene-butadiene rubber, 3 parts of zinc oxide, 2 parts of stearic acid, 1.8 parts of an anti-aging agent RD, 4 parts of N- β aminoethyl-gamma aminopropyltrimethoxysilane, 1.3 parts of an accelerator CZ, 1.6 parts of sulfur and 50 parts of modified carbon black.
10. The use of the modified carbon black of claim 8 or 9 in the preparation of an automotive tire compound, wherein the automotive tire compound is prepared by plasticating styrene-butadiene rubber in an internal mixer for 1-3min, adding zinc oxide, stearic acid, N- β aminoethyl-gamma aminopropyltrimethoxysilane and the modified carbon black, mixing for 15-25min at 65-75 ℃ to mix with the rubber uniformly, cooling to room temperature after mixing, adding the anti-aging agent RD, the accelerator CZ and sulfur, mixing uniformly, discharging, cooling, standing for more than 20h, vulcanizing a sample by using a flat plate vulcanizing machine under the vulcanization condition of 155 ℃ 16MPa (t ℃)90+2) min to obtainTo automobile tyre rubber.
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| CN114958038A (en) * | 2022-06-23 | 2022-08-30 | 安徽德瑞新材料科技有限公司 | Preparation method of water-soluble carbon black |
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| CN114316635A (en) * | 2021-12-30 | 2022-04-12 | 宁波德泰化学有限公司 | Amphiphilic carbon black and preparation method thereof |
| CN115011145A (en) * | 2022-05-13 | 2022-09-06 | 万思得新材料科技(中山)有限公司 | Surface modified carbon black and preparation method thereof, high-impedance BM light resistor and preparation method thereof |
| CN115011145B (en) * | 2022-05-13 | 2023-08-29 | 万思得新材料科技(中山)有限公司 | Surface modified carbon black and preparation method thereof, high-impedance BM photoresist and preparation method thereof |
| CN115073940A (en) * | 2022-06-21 | 2022-09-20 | 安徽固瑞特新材料科技有限公司 | Production process flow for improving dispersion performance of pyrolysis carbon black for rubber |
| CN115073940B (en) * | 2022-06-21 | 2023-09-19 | 安徽固瑞特新材料科技有限公司 | Production process flow for improving dispersion performance of cracking carbon black for rubber |
| CN114958038A (en) * | 2022-06-23 | 2022-08-30 | 安徽德瑞新材料科技有限公司 | Preparation method of water-soluble carbon black |
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