Interfacial reinforcing agent for pyrolyzed carbon black, and reinforced pyrolyzed carbon black and use thereof

Abstract

The present invention belongs to the fields of pyrolyzed carbon black reinforcement, and the manufacturing of tires and non-tire rubber products. Provided are an interfacial reinforcing agent for pyrolyzed carbon black, and reinforced pyrolyzed carbon black and the use thereof. The interfacial reinforcing agent for pyrolyzed carbon black comprises the following components in parts by mass: 0.1-10 parts of a main interfacial reinforcing agent and 0.1-3 parts of an auxiliary interfacial reinforcing agent, wherein the main interfacial reinforcing agent comprises one or more of a nitrogen-containing compound, an active-double-bond-containing compound and a sulfur-containing compound; and the auxiliary interfacial reinforcing agent comprises one or more of a coupling agent compound, an organic acid compound and an amide compound. With regard to different functional groups (including double bonds, oxygen-containing functional groups, etc.) contained in the surface of the pyrolyzed carbon black, a suitable interfacial reinforcing agent is selected for modification to make the interfacial reinforcing agent react with the surface of pyrolyzed carbon black, thereby improving the tensile strength of the modified pyrolyzed carbon black in a rubber system.

Description

An interfacial reinforcing agent for pyrolysis carbon black, reinforcing pyrolysis carbon black and its applications

[0001] This application claims priority to Chinese Patent Application No. CN202410578580.6, filed on May 10, 2024, entitled "An interface reinforcing agent for pyrolysis carbon black, reinforcing pyrolysis carbon black and its application", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the fields of pyrolysis carbon black reinforcement, tire and non-tire rubber products tire manufacturing technology, and in particular to an interface reinforcing agent for pyrolysis carbon black, reinforcing pyrolysis carbon black and its application. Background Technology

[0003] Currently, with the development of the automotive industry, passenger cars have become an indispensable means of transportation in people's lives. Consequently, the number of waste tires has increased dramatically, making their disposal a crucial issue. Pyrolytic carbon black (CBp) is one of the products of pyrolytic cracking of waste tires. Because the formulations of various tire components use a wide variety of raw materials, the resulting pyrolytic carbon black has low activity and poor reinforcing effect. When directly applied to rubber compositions, it results in low tensile strength, low modulus, and low hardness.

[0004] In existing technologies, pyrolysis carbon black cannot replace ordinary carbon black in large quantities. Methods to improve the performance of pyrolysis carbon black include reducing its ash content, using ultrafine particle size pyrolysis carbon black, and plasma modification. However, these methods have problems such as serious environmental pollution, large equipment investment, and large waste volume. The reinforcing effect of pyrolysis carbon black in existing technologies is not ideal. For example, CN113150578A and CN103265828A have the problem of small improvement in tensile strength of pyrolysis carbon black rubber compositions.

[0005] Summary of the Invention

[0006] In view of this, the purpose of this application is to provide an interfacial reinforcing agent for pyrolysis carbon black, reinforcing pyrolysis carbon black, and its application. The interfacial reinforcing agent provided in this application, when used with pyrolysis carbon black, can improve the tensile strength of rubber compositions.

[0007] To achieve the above-mentioned objectives, this application provides the following technical solution:

[0008] This application provides an interfacial reinforcing agent for pyrolysis carbon black, comprising the following components in parts by weight: 0.1 to 10 parts of main interfacial reinforcing agent and 0.1 to 3 parts of auxiliary interfacial reinforcing agent;

[0009] The main interface reinforcing agent includes one or more of nitrogen-containing compounds, compounds containing active double bonds, and sulfur-containing compounds;

[0010] The interface reinforcing agent includes one or more of coupling agents, organic acid compounds, and amide compounds.

[0011] Preferably, the main interface reinforcing agent is present in a mass fraction of 0.5 to 5 parts.

[0012] Preferably, the molecular formula of the main interface reinforcing agent is R1-XRY-R2 or R1-XRH, where X is -(NH). n - or -CONHNH-, where n = 0, 1, 2 or 3; Y is -C = C-, -CONHNH- or -S m - where m is an integer from 0 to 8; R, R1 and R2 are independently hydrogen atoms, nitrogen atoms, oxygen atoms, alkyl, aralkyl, aryl or heterocyclic groups.

[0013] Preferably, the main interface reinforcing agent comprises trivinyltetramine, 5-(tert-butyl)-1,2-dihydro-3H-1,2,4-triazol-3-imine, azodicarbonamide, o-toluidine, m-toluidine, p-toluidine, benzidine, diphenylamine, cyclohexylamine, hexamethylenetetramine, hexamethoxymethylmelamine, aniline, hexylamine, butylamine, octylamine, benzylamine, methylamine, ethylamine, ethylenediamine, dimethylamine, trimethylamine, triethylamine, propylamine, and tripropylamine. One or more of the following: N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, 2,2,4-trimethyl-1,2-dihydroquinoline polymer, S-(3-aminopropyl)thiosulfate, adipicohydrazide, terephthalic acid hydrazide, naphthohydrazide derivatives, N,N'-m-phenylenebismaleimide, polymaleimide, maleimide, bismaleimide, succinimide, N-bromosuccinimide, and glutarimide.

[0014] Preferably, the mass fraction of the interfacial reinforcing agent is 0.2 to 1.5 parts.

[0015] Preferably, the interfacial reinforcing agent is a silane coupling agent, a boronane coupling agent, a titanate coupling agent, a phosphate coupling agent, an organic compound with the molecular formula R4-X2-R3-Y2-R5, or an organic compound with the molecular formula R4-X2-R3-H, wherein X2 is -CONH- or -COO-; Y2 is -C=C- or -S m - where m is an integer from 0 to 8; R3, R4 and R5 are independently hydrogen atoms, alkyl, aralkyl, aryl or heterocyclic groups.

[0016] Preferably, the interfacial reinforcing agent comprises one or more of stearic acid, oxaloacetic acid, citric acid, palmitic acid, malic acid, tartaric acid, acetic acid, succinic acid, oxalic acid, phenyl maleic anhydride, maleic acid, fumaric acid, 4-oxo-4-p-aniline-2-butenoic acid, Si69, Si75, NXT, Z45, Si363, Si747, KH550, KH560, KH570, KH792, DL602, DL171, B69, and isopropyl tris(dioctylpyrophosphoryloxy)titanate.

[0017] Preferably, the interface reinforcing agent comprises the following components in parts by weight:

[0018] 1 part S-(3-aminopropyl)thiosulfate and 0.5 parts Si69;

[0019] Alternatively: 1 part S-(3-aminopropyl)thiosulfate and 0.5 parts tris(dioctylpyrophosphoryloxy)titanate isopropyl ester; or: 1 part S-(3-aminopropyl)thiosulfate and 0.5 parts maleic acid; or: 3 parts S-(3-aminopropyl)thiosulfate and 0.5 parts maleic acid; 5 parts S-(3-aminopropyl)thiosulfate and 0.5 parts maleic acid; 0.8 parts S-(3-aminopropyl)thiosulfate, 0.3 parts Si69 and 0.4 parts maleic acid; or: 1.5 parts S-(3-aminopropyl)thiosulfate, 0.5 parts Si69 and 0.5 parts maleic acid; or: 1.5 parts polymaleimide and 0.1 parts Si75; or: 1.5 parts polymaleimide and 3 parts Si75; or: hexamethylenetetramine 1 part and maleic acid 0.5 parts; or: 5 parts hexamethylenetetramine and maleic acid 0.5 parts; or: 0.5 parts polymaleimide, 0.5 parts hexamethylenetetramine, 0.2 parts Si75 and maleic acid 0.3 parts; or: 0.1 parts naphthohydrazide derivative and 1 part Si69; or: 5 parts naphthohydrazide derivative and 1 part Si69; or: 10 parts naphthohydrazide derivative and 1 part Si69; or: 1.5 parts naphthohydrazide derivative and fumaric acid 0.5 parts; or: 1.5 parts naphthohydrazide derivative and stearic acid 1.5 parts; or: 1 part naphthohydrazide derivative, 0.5 parts Si69 and fumaric acid 0.5 parts; or: 2 parts terephthalamide and 0.5 parts Si75 or 2 parts terephthalamide, 0.5 parts Si75 and 0.5 parts oxaloacetic acid.

[0020] This application also provides a reinforcing pyrolysis carbon black, prepared from raw materials comprising the following parts by mass:

[0021] 100 parts of pyrolysis carbon black, 0.1-10 parts of main interface reinforcing agent, and 0.1-3 parts of auxiliary interface reinforcing agent;

[0022] The main interface reinforcing agent includes one or more of nitrogen-containing compounds, compounds containing active double bonds, and sulfur-containing compounds;

[0023] The interface reinforcing agent includes one or more of coupling agents, organic acid compounds, and amide compounds.

[0024] Preferably, the pyrolysis carbon black is prepared by a method comprising the following steps: sequentially crushing, magnetically separating and pyrolyzing waste tires.

[0025] This application also provides a method for preparing the reinforcing pyrolysis carbon black described in the above technical solution, comprising the following steps:

[0026] The pyrolysis carbon black, the main interface reinforcing agent, and the auxiliary interface reinforcing agent are mixed and granulated in sequence to obtain the reinforced pyrolysis carbon black.

[0027] Preferably, the mixing is performed by grinding in a grinder or stirring in a mixer.

[0028] Preferably, the mixing time is 5 to 300 minutes.

[0029] Preferably, the mixing temperature is 0–200°C.

[0030] This application also provides the application of the reinforcing pyrolysis carbon black described in the above technical solution as a filler or colorant in the tire industry.

[0031] This application provides an interfacial reinforcing agent for pyrolysis carbon black, comprising the following components in parts by weight: 0.1 to 10 parts of a main interfacial reinforcing agent and 0.1 to 3 parts of a secondary interfacial reinforcing agent; wherein the main interfacial reinforcing agent comprises one or more of nitrogen-containing compounds, compounds containing active double bonds, and sulfur-containing compounds; and wherein the secondary interfacial reinforcing agent comprises one or more of coupling agent compounds, organic acid compounds, and amide compounds.

[0032] Compared with the prior art, this application has the following advantages:

[0033] This application targets the different functional groups (including double bonds, oxygen-containing functional groups, etc.) on the surface of pyrolysis carbon black and the ash content of pyrolysis carbon black (the ash mainly consists of Si, Zn, etc.). It selects suitable interfacial reinforcing agents for modification, allowing the interfacial reinforcing agents to react with the surface of pyrolysis carbon black, thereby improving the tensile strength of the modified pyrolysis carbon black in the rubber system. In this application, the main interfacial reinforcing agent can graft and modify pyrolysis carbon black, increasing its activity and enhancing its interaction with rubber. The auxiliary interfacial reinforcing agent has a strong physical interaction with pyrolysis carbon black, acting as a coating agent and improving the compatibility of pyrolysis carbon black in the rubber composition. The combination of the main interfacial reinforcing agent and the auxiliary interfacial reinforcing agent significantly improves the tensile strength, modulus, and hardness of the pyrolysis carbon black rubber composition.

[0034] Data from the embodiments show that the pyrolysis carbon black interface reinforcing agent of this application is used to reinforce pyrolysis carbon black. The reinforced pyrolysis carbon black can partially or completely replace ordinary carbon black in rubber compositions. Rubber compositions using reinforced pyrolysis carbon black can be used in tires or other non-tire rubber products. Detailed Implementation

[0035] This application provides an interfacial reinforcing agent for pyrolysis carbon black, comprising the following components in parts by weight: 0.1 to 10 parts of main interfacial reinforcing agent and 0.1 to 3 parts of auxiliary interfacial reinforcing agent;

[0036] The main interface reinforcing agent includes one or more of nitrogen-containing compounds, compounds containing active double bonds, and sulfur-containing compounds;

[0037] The interface reinforcing agent includes one or more of coupling agents, organic acid compounds, and amide compounds.

[0038] Unless otherwise specified, all raw materials used in this application are commercially available products in the field.

[0039] In this application, the mass fraction of the main interface reinforcing agent is preferably 0.5 to 5 parts.

[0040] In this application, the molecular formula of the main interface reinforcing agent is preferably R1-XRY-R2 or R1-XRH, where X is -(NH). n - or -CONHNH-, where n = 0, 1, 2 or 3; Y is -C = C-, -CONHNH- or -S m - where m is an integer from 0 to 8; R, R1 and R2 are independently hydrogen atoms, nitrogen atoms, oxygen atoms, alkyl, aralkyl, aryl or heterocyclic groups.

[0041] In this application, the main interface reinforcing agent preferably includes trivinyltetramine, 5-(tert-butyl)-1,2-dihydro-3H-1,2,4-triazol-3-imine, azodicarbonamide, o-toluidine, m-toluidine, p-toluidine, benzidine, diphenylamine, cyclohexylamine, hexamethylenetetramine, hexamethoxymethylmelamine, aniline, hexylamine, butylamine, octylamine, benzylamine, methylamine, ethylamine, ethylenediamine, dimethylamine, trimethylamine, triethylamine, propylamine, tri... One or more of the following: propylamine, N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, 2,2,4-trimethyl-1,2-dihydroquinoline polymer, S-(3-aminopropyl)thiosulfate, adipicohydrazide, terephthalic acid hydrazide, naphthohydrazide derivatives, N,N'-m-phenylenebismaleimide, polymaleimide, maleimide, bismaleimide, succinimide, N-bromosuccinimide, and glutarimide.

[0042] In this application, the preferred mass fraction of the interfacial reinforcing agent is 0.2 to 1.5 parts.

[0043] In this application, the interfacial reinforcing agent is preferably a silane coupling agent, a boron coupling agent, a titanate coupling agent, a phosphate coupling agent, an organic compound with the molecular formula R4-X2-R3-Y2-R5, or an organic compound with the molecular formula R4-X2-R3-H, wherein X2 is -CONH- or -COO-; Y2 is -C=C- or -S m - where m is an integer from 0 to 8; R3, R4 and R5 are independently hydrogen atoms, alkyl, aralkyl, aryl or heterocyclic groups.

[0044] In this application, the interfacial reinforcing agent preferably includes one or more of stearic acid, oxaloacetic acid, citric acid, palmitic acid, malic acid, tartaric acid, acetic acid, succinic acid, oxalic acid, phenyl maleic anhydride, maleic acid, fumaric acid, 4-oxo-4-p-aniline-2-butenoic acid, Si69, Si75, NXT, Z45, Si363, Si747, KH550, KH560, KH570, KH792, DL602, DL171, B69, and isopropyl tris(dioctylpyrophosphoryloxy)titanate.

[0045] In specific embodiments of this application, the interface reinforcing agent preferably comprises the following components in parts by weight: 1 part S-(3-aminopropyl)thiosulfate and 0.5 parts Si69; 1 part S-(3-aminopropyl)thiosulfate and 0.5 parts tris(dioctylpyrophosphoryloxy)titanate isopropyl; 1 part S-(3-aminopropyl)thiosulfate and 0.5 parts maleic acid; 3 parts S-(3-aminopropyl)thiosulfate and 0.5 parts maleic acid; 5 parts S-(3-aminopropyl)thiosulfate and 0.5 parts maleic acid; 0.8 parts S-(3-aminopropyl)thiosulfate, 0.3 parts Si69 and 0.4 parts maleic acid; 1.5 parts S-(3-aminopropyl)thiosulfate, 0.5 parts Si69 and 0.5 parts maleic acid; 1.5 parts polymaleimide and S... 0.1 parts of i75; 1.5 parts of polymaleimide and 3 parts of Si75; 1 part of hexamethylenetetramine and 0.5 parts of maleic acid; 5 parts of hexamethylenetetramine and 0.5 parts of maleic acid; 0.5 parts of polymaleimide, 0.5 parts of hexamethylenetetramine, 0.2 parts of Si75 and 0.3 parts of maleic acid; 0.1 parts of naphthohydrazide derivative and 1 part of Si69; 5 parts of naphthohydrazide derivative and 1 part of Si69; 10 parts of naphthohydrazide derivative and 1 part of Si69; 1.5 parts of naphthohydrazide derivative and 0.5 parts of fumaric acid; 1.5 parts of naphthohydrazide derivative and 1.5 parts of stearic acid; 1 part of naphthohydrazide derivative, 0.5 parts of Si69 and 0.5 parts of fumaric acid; 2 parts of terephthalamide and 0.5 parts of Si75; 2 parts of terephthalamide, 0.5 parts of Si75 and 0.5 parts of oxaloacetic acid.

[0046] This application also provides a reinforcing pyrolysis carbon black, prepared from raw materials comprising the following parts by mass:

[0047] 100 parts of pyrolysis carbon black, 0.1-10 parts of main interface reinforcing agent, and 0.1-3 parts of auxiliary interface reinforcing agent.

[0048] This application does not have any special limitations on the type or mass fraction of the main interface reinforcing agent and the auxiliary interface reinforcing agent, and is consistent with the above scheme, so it will not be repeated here.

[0049] In this application, the pyrolysis carbon black is prepared by a method comprising the following steps: sequentially crushing, magnetically separating and pyrolyzing waste tires.

[0050] This application does not impose any special limitation on the specific methods of crushing, magnetic separation and pyrolysis carbonization treatment, and any method known to those skilled in the art can be used.

[0051] In this application, the pyrolysis and carbonization treatment preferably further includes pulverization. This application does not have a specific limitation on the pulverization method, and any method known to those skilled in the art can be used.

[0052] This application also provides a method for preparing the reinforcing pyrolysis carbon black described in the above technical solution, comprising the following steps:

[0053] The pyrolysis carbon black, the main interface reinforcing agent, and the auxiliary interface reinforcing agent are mixed and granulated in sequence to obtain the reinforced pyrolysis carbon black.

[0054] In this application, the mixing is preferably performed by grinding in a grinder or stirring in a mixer.

[0055] In this application, the mixing time is preferably 5 to 300 min, more preferably 20 to 180 min, and most preferably 20 to 60 min.

[0056] In this application, the mixing is preferably dry or wet.

[0057] In this application, the mixing temperature is preferably 0 to 200°C, more preferably 20 to 150°C, and most preferably 20 to 120°C.

[0058] After granulation is completed, this application preferably includes drying. This application does not have any special limitations on the specific methods of granulation and drying, and any method known to those skilled in the art can be used.

[0059] In this application, the drying temperature is preferably 80-300℃, more preferably 100-200℃, and most preferably 120-150℃. This application does not have a special limitation on the drying time, as long as it can achieve the desired drying time.

[0060] This application also provides the application of the reinforcing pyrolysis carbon black described in the above technical solution as a filler or colorant in the tire industry.

[0061] This application does not impose any special limitation on the specific method of application; any method well known to those skilled in the art can be used.

[0062] The technical solutions of this application will be clearly and completely described below with reference to the embodiments therein. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0063] The testing standards and methods in the following embodiments are as follows:

[0064] 1) Mooney viscosity: Refer to ASTM D1646-2007, the test conditions are ML(1+4) 100℃, the larger the index, the higher the Mooney viscosity.

[0065] 2) Mooney scorch: Refer to ASTM D1646-2007, the test temperature is 130 degrees Celsius, the higher the index, the longer the scorch time.

[0066] 3) Hardness: Shore hardness test, refer to ASTM D2240-2010, the higher the index, the higher the hardness.

[0067] 4) MA100: 100% tensile modulus test, refer to ASTM D412-2006, take the modulus when the tensile rate is 100%, the larger the index, the higher the tensile modulus.

[0068] 5) MA300: 300% tensile modulus test, refer to ASTM D412-2006, take the modulus when the elongation is 300%, the larger the index, the higher the tensile modulus.

[0069] 6) MA300 / MA100: The ratio of 300% modulus to 100% modulus, which generally characterizes the reinforcing effect of the filler. The larger the ratio, the better the reinforcing effect of the filler.

[0070] 7) Tensile strength and elongation at break: Refer to ASTM D412-2006. The sample is dumbbell-shaped. The test speed is 500 mm / min. The test environment temperature is 23±2℃. The larger the index, the higher the tensile strength.

[0071] 8) Tear strength: Refer to ASTM D624-2007, use right-angled specimens, test speed 500mm / min, test ambient temperature 23±2℃, the higher the index, the higher the tear strength.

[0072] 9) Hysteresis loss factor: Tested using Metravib DMA at 25°C, 10Hz, dynamic deformation of 0.07% to 50%, in planar shear mode. The smaller the exponent, the smaller the hysteresis loss.

[0073] The raw materials used in this application embodiment are as follows:

[0074] Natural rubber: TSR20, Sinochem International (Holdings) Co., Ltd.

[0075] Pyrolysis carbon black (unmodified, EN660): Anhui Kelintai Co., Ltd.

[0076] terephthalohydrazide: Titan Technology Exploration Platform

[0077] Domaleimide: Otsuka Chemical Management (Shanghai) Co., Ltd.

[0078] Diphenylamine (amine compound): Titan Technology Exploration Platform

[0079] S-(3-aminopropyl)thiosulfate: Sumitomo Chemical

[0080] 4-O-4-p-aniline-2-butenoic acid: Sumitomo Chemical

[0081] Maleic acid: Titan Technology Exploration Platform

[0082] Fumaric acid: Titan Technology Exploration Platform

[0083] Oxaloacetic acid: Titan Technology Exploration Platform

[0084] Si69: Jiangxi Chenguang New Materials Co., Ltd.

[0085] Si75: Jiangxi Chenguang New Materials Co., Ltd.

[0086] Tris(dioctylpyrophosphoryloxy)titanate isopropyl ester: Titan Technology Exploration Platform 6PPD: Shandong Shangshun Chemical Co., Ltd.

[0087] Stearic acid: Sichuan Tianyu Oil & Chemical Co., Ltd.

[0088] Naphthohydrazide derivatives: Otsuka Chemical Management (Shanghai) Co., Ltd.

[0089] Zinc oxide: Dalian Zinc Oxide Co., Ltd.

[0090] DM: Shandong Shangshun Chemical Co., Ltd.

[0091] Sulfur: Shandong Shangshun Chemical Co., Ltd.

[0092] RD: Shandong Shangshun Chemical Co., Ltd.

[0093] Hexamethylenetetramine: Yanggu Huatai Co., Ltd.

[0094] Hexamethoxymethylmelamine: Yanggu Huatai Co., Ltd.

[0095] Example 1

[0096] The reinforcing pyrolysis carbon black raw materials are shown in Table 1 below.

[0097] Table 1 Reinforcing Pyrolysis Carbon Black Raw Materials

[0098] Modified pyrolysis carbon black refers to the pyrolysis carbon black obtained by modifying pyrolysis carbon black with S-(3-aminopropyl)thiosulfate, Si69, tris(dioctylpyrophosphoryloxy)titanate isopropyl ester, maleic acid alone or in combination, as described in Modified A-1 to Modified A-11. Unmodified pyrolysis carbon black is pyrolysis carbon black that has not been treated with interfacial reinforcing agents.

[0099] The preparation method of reinforcing pyrolysis carbon black in Table 1 is as follows: (1) Weigh each raw material according to the weight parts of the rubber composition in Table 1; (2) Add the pyrolysis carbon black and the interface reinforcing agent to the air jet mill for grinding, grind for 60 min, grind at 30℃; (3) Heat treat the obtained reinforcing pyrolysis carbon black at 120℃ to obtain the final reinforcing pyrolysis carbon black.

[0100] The reinforcing pyrolysis carbon black obtained above was added to the rubber formulation for experiments. The rubber formulation is shown in Table 2.

[0101] Table 2 Rubber Formulation

[0102] The performance test results of the modified pyrolysis carbon black of Comparative Example 1 and Example 1 and the rubber composition prepared using the obtained reinforcing pyrolysis carbon black are shown in Table 3.

[0103] Table 3 Comparison of performance results between Example 1 and Comparative Example 1

[0104] The test results of the rubber composition are expressed in exponential form, with the test result of Comparative Example 1 being 100. The calculation formula is: Test result of Example = (Example / Comparative Example) × 100.

[0105] As shown in Table 3, compared with Comparative Example 1, the MA300, MA300 / MA100, and tensile strength of Examples 1-1 increased by 18%, 7%, and 24%, respectively; compared with Comparative Example 1, the MA300, MA300 / MA100, and tensile strength of Examples 1-2 increased by 6%, 2%, and 10%, respectively; compared with Comparative Example 1, the MA300 and tensile strength of Examples 1-3 increased by 3% and 2%, respectively, while the MA300 / MA100 remained unchanged; compared with Comparative Example 1, the MA300, MA300 / MA100, and tensile strength of Examples 1-4 increased by 12%, 4%, and 8%, respectively. Therefore, different interface modifiers improve the modulus and tensile strength of reinforced pyrolysis carbon black to varying degrees. The modified pyrolysis carbon black reinforced with the main interface reinforcing agent S-(3-aminopropyl)thiosulfate showed the best reinforcing effect (Example 1-1), and the rubber composition prepared with it had higher modulus and tensile strength (Example 1-1).

[0106] Compared with Comparative Example 1-1, the MA300 of Examples 1-6, 1-7, and 1-8 increased by 16%, 20%, and 28%, respectively; the MA300 / MA100 increased by 7%, 11%, and 15%, respectively; and the tensile strength increased by 23%, 26%, and 28%, respectively. This indicates that as the amount of reinforcing agent added to the main interface increases, the reinforcing effect of the pyrolysis carbon black increases, and the tensile strength shows an increasing trend.

[0107] Compared with Examples 1-1, the MA300, MA300 / MA100 and tensile strength of Examples 1-7 increased by 2%, 4% and 2% respectively, indicating that the physical properties of the main interface reinforcing agent and the auxiliary interface reinforcing agent used together are better than the reinforcing effect of the main interface reinforcing agent used alone.

[0108] Compared with Examples 1-1, the MA300, MA300 / MA100, and tensile strength of Examples 1-11 increased by 20%, 11%, and 6%, respectively, indicating that the modulus, tensile strength, and other physical properties were significantly improved when the main interface reinforcing agent S-(3-aminopropyl)thiosulfate was used in combination with the auxiliary interface reinforcing agents Si69 and maleic acid.

[0109] The above indicates that the primary interfacial reinforcing agent has higher modulus and tensile strength than the secondary interfacial reinforcing agent. Because the surface of pyrolysis carbon black contains oxygen-containing functional groups and unsaturated bonds, the primary interfacial reinforcing agent can chemically react with the surface of pyrolysis carbon black, i.e., it can be grafted onto the surface of pyrolysis carbon black. Since pyrolysis carbon black contains about 20% ash, and the main inorganic component is silica, coupling agents (such as silane coupling agents) can improve the dispersion of silica, which is beneficial to improving the physical properties of the rubber composition. Maleic acid, as a secondary interfacial reinforcing agent, has a certain coating effect on pyrolysis carbon black, and the physical properties of the rubber composition are improved to some extent. Therefore, by combining the primary and secondary interfacial reinforcing agents, and utilizing the individual effects of different interfacial reinforcing agents, the physical properties of rubber compositions prepared by reinforcing pyrolysis carbon black are optimally achieved.

[0110] The amount of interfacial reinforcing agent has a certain impact on the modulus and tensile strength of rubber composition. As the amount of interfacial reinforcing agent increases, the modulus and tensile strength of rubber composition tend to increase. However, the cost increases accordingly with the increase in amount. Appropriate interfacial reinforcing agents and amounts can be selected according to different requirements.

[0111] Example 2

[0112] The reinforcing pyrolysis carbon black raw materials are shown in Table 4.

[0113] Table 4 Reinforced Pyrolysis Carbon Black Raw Materials

[0114] Modified pyrolysis carbon black refers to the pyrolysis carbon black obtained by modifying pyrolysis carbon black with polymaleimide, hexamethylenetetramine, Si75, and maleic acid alone or in combination in modified B-1 to modified B-10, while unmodified pyrolysis carbon black is pyrolysis carbon black that has not been treated with interfacial reinforcing agents.

[0115] The preparation method of modified pyrolysis carbon black in Table 4 is as follows: (1) Weigh each raw material according to the weight parts in Table 4; (2) Add pyrolysis carbon black and interface reinforcing agent to an air jet mill for grinding, grinding time 60 min, grinding temperature 30℃; (3) Heat treat the obtained reinforcing pyrolysis carbon black at 120℃ to obtain the final reinforcing pyrolysis carbon black.

[0116] The reinforcing pyrolysis carbon black obtained above was added to the rubber formulation for experiments. The rubber formulation is shown in Table 5.

[0117] Table 5 Rubber Formulation

[0118] The performance test results of the reinforcing pyrolysis carbon black of Comparative Example 2 and Example 2 and the rubber composition prepared using the obtained reinforcing pyrolysis carbon black are shown in Table 6.

[0119] Table 6 Comparison of performance results between Example 2 and Comparative Example 2

[0120] Table 6 shows that, compared to Comparative Example 2, the hardness, MA300, MA300 / MA100, and tensile strength of Example 2-1 increased by 4%, 29%, 14%, and 7%, respectively; compared to Comparative Example 2, the hardness, MA300, MA300 / MA100, and tensile strength of Example 2-2 increased by 3%, 6%, 3%, and 18%, respectively; compared to Comparative Example 2, the MA300, MA300 / MA100, and tensile strength of Example 2-3 increased by 2%, 1%, and 1%, respectively; compared to Comparative Example 2, the MA300, MA300 / MA100, and tensile strength of Example 2-4 increased by 6%, 3%, and 5%, respectively; and compared to Comparative Example 2, the MA300, MA300 / MA100, and tensile strength of Example 2-5 increased by 6%, 2%, and 3%, respectively. It is evident that different interface modifiers improve the modulus and tensile strength of reinforced pyrolysis carbon black to varying degrees. The main interface reinforcing agents, domaleimide and hexamethylenetetramine, provide the best reinforcing effect for modified pyrolysis carbon black (Examples 2-1 and 2-2), resulting in rubber compositions with higher modulus and tensile strength (Examples 2-1 and 2-2). Increasing the amount of auxiliary interface reinforcing agents tends to increase modulus and tensile strength, but the increase is relatively small (Examples 2-3 and 2-4).

[0121] Compared to Comparative Example 2-1, the MA300 and tensile strength of Examples 2-6 increased by 1% and 1%, respectively. Because the amount of the interfacial reinforcing agent Si75 was small, the physical properties were similar to those of using the main interfacial reinforcing agent alone. Compared to Comparative Example 2-1, the MA300, MA300 / MA100, and tensile strength of Examples 2-7 increased by 6%, 3%, and 13%, respectively. The combined use of the main interfacial reinforcing agent polymaleimide and the interfacial reinforcing agent Si75 significantly improved the modulus, tensile strength, and other physical properties of the reinforced pyrolysis carbon black rubber composition.

[0122] Compared to Examples 2-8, the hardness, MA300, MA300 / MA100, and tensile strength of Examples 2-9 increased by 2%, 5%, 1%, and 3%, respectively. This indicates that as the amount of reinforcing agent added to the main interface increases, the reinforcing effect of the pyrolysis carbon black increases, and the tensile strength shows an increasing trend.

[0123] Compared to Example 2-1, the hardness, MA300, MA300 / MA100, and tensile strength of Example 2-10 increased by 5%, 30%, 18%, and 28%, respectively, and were also superior to the effects of using the main interface reinforcing agent or the auxiliary interface reinforcing agent alone. This indicates that the combined use of the main interface reinforcing agent and the auxiliary interface reinforcing agent results in better physical properties and reinforcement effect than using the main interface reinforcing agent alone.

[0124] The above indicates that the primary interfacial reinforcing agent exhibits higher modulus and tensile strength than the secondary interfacial reinforcing agent. The primary interfacial reinforcing agent is used to graft and modify the surface of pyrolysis carbon black; coupling agents (such as silane coupling agents) improve the dispersion of silica; and maleic acid, as a secondary interfacial reinforcing agent, provides a certain coating effect on the pyrolysis carbon black. By combining the primary and secondary interfacial reinforcing agents and utilizing their respective effects, the optimal combination for reinforcing the properties of rubber compositions prepared from pyrolysis carbon black is achieved.

[0125] The amount of interfacial reinforcing agent has a certain impact on the modulus and tensile strength of rubber composition. As the amount of interfacial reinforcing agent increases, the modulus and tensile strength of rubber composition tend to increase. However, the cost increases accordingly with the increase in amount. Appropriate interfacial reinforcing agents and amounts can be selected according to different requirements.

[0126] Example 3

[0127] The raw materials for reinforcing pyrolysis carbon black are shown in Table 7.

[0128] Table 7 Reinforced Pyrolysis Carbon Black Raw Materials

[0129] Modified pyrolysis carbon black refers to the carbon black obtained by modifying pyrolysis carbon black with polynaphthalene hydrazide derivatives, Si69, fumaric acid, and stearic acid alone or in combination in modified C-1 to modified C-10, while unmodified carbon black is pyrolysis carbon black that has not been treated with interfacial reinforcing agents.

[0130] The preparation method of reinforcing pyrolysis carbon black in Table 7 is as follows: (1) Weigh each raw material according to the weight parts in Table 7; (2) Add pyrolysis carbon black and interface reinforcing agent to an air jet mill for grinding, grinding time 60 min, grinding temperature 30℃; (3) Heat treat the obtained reinforcing pyrolysis carbon black at 120℃ to obtain the final reinforcing pyrolysis carbon black.

[0131] The reinforcing pyrolysis carbon black obtained above was added to the rubber formulation for experiments. The rubber formulation is shown in Table 8.

[0132] Table 8 Rubber Formulation

[0133] The performance test results of the reinforcing pyrolysis carbon black of Comparative Example 3 and Example 3 and the rubber composition prepared using the obtained reinforcing pyrolysis carbon black are shown in Table 9.

[0134] Table 9 Comparison of performance results between Example 3 and Comparative Example 3

[0135] The test results of the rubber composition are expressed in exponential form, with the test result of Comparative Example 3 as 100. The calculation formula is: Test result of Example = (Example / Comparative Example) × 100.

[0136] Table 9 shows that, compared to Comparative Example 3, the hardness, MA300, MA300 / MA100, and tensile strength of Example 3-1 increased by 5%, 24%, 15%, and 32%, respectively; compared to Comparative Example 3, the MA300, MA300 / MA100, and tensile strength of Example 3-2 increased by 6%, 2%, and 10%, respectively; compared to Comparative Example 3, the MA300, MA300 / MA100, and tensile strength of Example 3-3 increased by 2%, 1%, and 1%, respectively; and compared to Comparative Example 3, the MA300 / MA100 and tensile strength of Example 3-4 increased by 1% and 5%, respectively. Therefore, different interface modifiers improve the modulus and tensile strength of reinforced pyrolysis carbon black to varying degrees. The modified pyrolysis carbon black reinforced with the main interface reinforcing agent, naphthohydrazine derivative, showed the best reinforcing effect (Example 3-1), and the rubber composition prepared from it had higher modulus and tensile strength (Example 3-1). As the amount of interfacial reinforcing agent added increases, the modulus and tensile strength tend to increase, but the increase is relatively small (Examples 3-2, 3-3, 3-4).

[0137] Compared with Example 3-2, the tensile strength of Examples 3-5, 3-6, and 3-7 increased by 5%, 15%, and 26%, respectively, indicating that as the amount of reinforcing agent added to the main interface increases, the reinforcing effect of the pyrolysis carbon black increases, and the tensile strength shows an increasing trend.

[0138] Compared to Example 3-1, the tensile strength of MA300, MA300 / MA100 in Example 3-8 increased by 3%, 1%, and 2%, respectively, while the tensile strength of MA300 in Example 3-9 increased by 1% and 1%, respectively. This indicates that different combinations of interfacial reinforcing agents have different effects on the modification of pyrolysis carbon black, and appropriate combinations should be selected as needed.

[0139] Compared to Example 3-1, the hardness, MA300, MA300 / MA100, and tensile strength of Example 3-10 increased by 5%, 28%, 17%, and 35%, respectively, and were also superior to the effects of using the main interface reinforcing agent or the auxiliary interface reinforcing agent alone. This indicates that the combined use of the main interface reinforcing agent and the auxiliary interface reinforcing agent results in better physical properties and reinforcing effect than using the main interface reinforcing agent alone.

[0140] The above indicates that the primary interfacial reinforcing agent exhibits higher modulus and tensile strength than the secondary interfacial reinforcing agent. The primary interfacial reinforcing agent is used to graft and modify the surface of pyrolysis carbon black; coupling agents (such as silane coupling agents) improve the dispersion of silica; and fumaric acid, as a secondary interfacial reinforcing agent, has a certain coating effect on pyrolysis carbon black. Combining the primary and secondary interfacial reinforcing agents, and utilizing the individual effects of different interfacial reinforcing agents, yields the optimal physical properties for reinforcing rubber compositions prepared from pyrolysis carbon black. Furthermore, because different compounds possess unique chemical properties, even those containing the same functional groups or functional groups may exhibit different effects.

[0141] The amount of interfacial reinforcing agent has a certain impact on the modulus and tensile strength of rubber composition. As the amount of interfacial reinforcing agent increases, the modulus and tensile strength of rubber composition tend to increase. However, the cost increases accordingly with the increase in amount. Appropriate interfacial reinforcing agents and amounts can be selected according to different requirements.

[0142] Example 4

[0143] The raw materials for reinforcing pyrolysis carbon black are shown in Table 10.

[0144] Table 10 Reinforced Pyrolysis Carbon Black Raw Materials

[0145] Modified pyrolysis carbon black refers to the pyrolysis carbon black obtained by modifying pyrolysis carbon black with terephthalamide, Si75, and oxaloacetic acid alone or in combination in modified D-1 to modified D-5, while unmodified pyrolysis carbon black is pyrolysis carbon black that has not been treated with interfacial reinforcing agents.

[0146] The preparation method of modified pyrolysis carbon black in Table 10 is as follows: (1) Weigh each raw material according to the weight parts in Table 10; (2) Add the pyrolysis carbon black and the decryption reinforcing agent to an air jet mill for grinding, grind for 60 min, and grind at 30℃; (3) Heat treat the obtained modified pyrolysis carbon black at 120℃ to obtain the final modified pyrolysis carbon black.

[0147] The reinforcing pyrolysis carbon black obtained above was added to the rubber formulation for experiments. The rubber formulation is shown in Table 11.

[0148] Table 11 Rubber Formulation

[0149] The performance test results of Comparative Example 4 and Example 4 for the pyrolysis carbon black of Comparative Example 4 and Examples 4-1 to 4-5 and the rubber compositions prepared using the modified pyrolysis carbon black are shown in Table 12.

[0150] Table 12 Comparison of performance results between Example 4 and Comparative Example 4

[0151] The test results of the rubber composition are expressed in exponential form, with the test result of Comparative Example 4 as 100. The calculation formula is: Test result of Example = (Example / Comparative Example) × 100.

[0152] Table 12 shows that, compared to Comparative Example 4, the MA300, MA300 / MA100, and tensile strength of Example 4-1 increased by 5%, 8%, and 7%, respectively; compared to Comparative Example 4, the MA300, MA300 / MA100, and tensile strength of Example 4-2 increased by 2%, 1%, and 1%, respectively; and compared to Comparative Example 4, the MA300, MA300 / MA100, and tensile strength of Example 4-3 increased by 3%, 2%, and 2%, respectively. This indicates that different interface modifiers improve the modulus and tensile strength of reinforced pyrolysis carbon black to varying degrees. The main interface reinforcing agent shows the best reinforcing effect on phthalamide-reinforced modified pyrolysis carbon black (Example 4-1), and the rubber composition prepared from it has higher modulus and tensile strength (Example 4-1). Increasing the amount of auxiliary interface reinforcing agent tends to increase modulus and tensile strength, but the increase is relatively small (Examples 4-2 and 4-3).

[0153] Compared to Example 4-1, the tensile strength of MA300, MA300 / MA100, and tensile strength in Example 4-4 increased by 8%, 10%, and 9%, respectively; while the tensile strength of MA300, MA300 / MA100, and tensile strength in Example 4-4 increased by 9%, 13%, and 11%, respectively. This indicates that different combinations of interfacial reinforcing agents have different effects on the modification of pyrolysis carbon black, and appropriate combinations should be selected according to needs. The combined effect is superior to using either the main interfacial reinforcing agent or the auxiliary interfacial reinforcing agent alone. This shows that the combined use of the main interfacial reinforcing agent and the auxiliary interfacial reinforcing agent results in better physical properties than the reinforcement effect of using the main interfacial reinforcing agent alone.

[0154] The above indicates that the primary interfacial reinforcing agent exhibits higher modulus and tensile strength than the secondary interfacial reinforcing agent. The primary interfacial reinforcing agent is used to graft and modify the surface of pyrolysis carbon black; coupling agents (such as silane coupling agents) improve the dispersion of silica; and oxaloacetic acid, as a secondary interfacial reinforcing agent, provides a certain coating effect on the pyrolysis carbon black. By combining the primary and secondary interfacial reinforcing agents and utilizing their individual effects, the optimal combination for reinforcing the properties of rubber compositions prepared from pyrolysis carbon black is achieved. Appropriate interfacial reinforcing agents and their dosages can be selected according to different requirements.

[0155] In summary, the addition of a single interfacial reinforcing compound can modify pyrolysis carbon black. By combining different interfacial reinforcing agents, rubber compositions prepared from modified pyrolysis carbon black can be reinforced, resulting in more significant improvements in physical properties.

[0156] Therefore, in order to obtain the best modification effect of pyrolysis carbon black by adjusting the formula, the main interface reinforcing agent and the auxiliary interface reinforcing agent can be added during the production of pyrolysis carbon black.

[0157] The above test results show that using the main interface reinforcing agent alone to reinforce pyrolysis carbon black significantly improves the physical properties of the rubber composition prepared using pyrolysis carbon black. Combining the main interface reinforcing agent with an auxiliary interface reinforcing agent to reinforce pyrolysis carbon black results in even better reinforcing effect. This is mainly because the surface of pyrolysis carbon black contains various functional groups, and the grafting modification by the main interface reinforcing agent and the coating effect of the auxiliary interface reinforcing agent can improve the reinforcing effect of pyrolysis carbon black.

[0158] The above description is merely a preferred embodiment of this application and does not constitute any limitation on this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An interfacial reinforcing agent for pyrolysis carbon black, characterized in that, The components include the following parts by weight: 0.1 to 10 parts of main interface reinforcing agent and 0.1 to 3 parts of auxiliary interface reinforcing agent; The main interface reinforcing agent includes one or more of nitrogen-containing compounds, compounds containing active double bonds, and sulfur-containing compounds; The interface reinforcing agent includes one or more of coupling agents, organic acid compounds, and amide compounds.

2. The interfacial reinforcing agent for pyrolysis carbon black according to claim 1, characterized in that, The main interface reinforcing agent has a mass fraction of 0.5 to 5 parts.

3. The interfacial reinforcing agent for pyrolysis carbon black according to claim 1 or 2, characterized in that, The main interface reinforcing agent has the molecular formula R1-XRY-R2 or R1-XRH, where X is -(NH). n - or -CONHNH-, where n = 0, 1, 2 or 3; Y is -C = C-, -CONHNH- or -S m - where m is an integer from 0 to 8; R, R1 and R2 are independently hydrogen atoms, nitrogen atoms, oxygen atoms, alkyl, aralkyl, aryl or heterocyclic groups.

4. The interfacial reinforcing agent for pyrolysis carbon black according to claim 1, characterized in that, The main interface reinforcing agent includes trivinyltetramine, 5-(tert-butyl)-1,2-dihydro-3H-1,2,4-triazol-3-imine, azodicarbonamide, o-toluidine, m-toluidine, p-toluidine, benzidine, diphenylamine, cyclohexylamine, hexamethylenetetramine, hexamethoxymethylmelamine, aniline, hexylamine, butylamine, octylamine, benzylamine, methylamine, ethylamine, ethylenediamine, dimethylamine, trimethylamine, triethylamine, propylamine, tripropylamine, N One or more of the following: -(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, 2,2,4-trimethyl-1,2-dihydroquinoline polymer, S-(3-aminopropyl)thiosulfate, adipicohydrazide, terephthalic acid hydrazide, naphthohydrazide derivatives, N,N'-m-phenylenebismaleimide, polymaleimide, maleimide, bismaleimide, succinimide, N-bromosuccinimide, and glutarimide.

5. The interfacial reinforcing agent for pyrolysis carbon black according to claim 1, characterized in that, The interface reinforcing agent is present in a mass fraction of 0.2 to 1.5 parts.

6. The interfacial reinforcing agent for pyrolysis carbon black according to claim 1 or 5, characterized in that, The interface reinforcing agent is a silane coupling agent, a boron coupling agent, a titanate coupling agent, a phosphate coupling agent, an organic compound with the molecular formula R4-X2-R3-Y2-R5, or an organic compound with the molecular formula R4-X2-R3-H, wherein X2 is -CONH- or -COO-; Y2 is -C=C- or -S. m - where m is an integer from 0 to 8; R3, R4 and R5 are independently hydrogen atoms, alkyl, aralkyl, aryl or heterocyclic groups.

7. The interfacial reinforcing agent for pyrolysis carbon black according to claim 1, characterized in that, The interface reinforcing agent includes one or more of stearic acid, oxaloacetic acid, citric acid, palmitic acid, malic acid, tartaric acid, acetic acid, succinic acid, oxalic acid, phenyl maleic anhydride, maleic acid, fumaric acid, 4-oxo-4-p-aniline-2-butenoic acid, Si69, Si75, NXT, Z45, Si363, Si747, KH550, KH560, KH570, KH792, DL602, DL171, B69, and isopropyl tris(dioctylpyrophosphoryloxy)titanate.

8. The interfacial reinforcing agent for pyrolysis carbon black according to claim 1, characterized in that, The interface reinforcing agent comprises the following components in parts by weight: 1 part S-(3-aminopropyl)thiosulfate and 0.5 parts Si69; Alternatively: 1 part S-(3-aminopropyl)thiosulfate and 0.5 parts tris(dioctylpyrophosphoryloxy)titanate isopropyl ester; Alternatively: 1 part S-(3-aminopropyl)thiosulfate and 0.5 parts maleic acid; Alternatively: 3 parts S-(3-aminopropyl)thiosulfate and 0.5 parts maleic acid; Alternatively: 5 parts S-(3-aminopropyl)thiosulfate and 0.5 parts maleic acid; Alternatively: 0.8 parts of S-(3-aminopropyl)thiosulfate, 0.3 parts of Si69, and 0.4 parts of maleic acid; Alternatively: 1.5 parts of S-(3-aminopropyl)thiosulfate, 0.5 parts of Si69 and 0.5 parts of maleic acid; Alternatively: 1.5 parts of maleimide and 0.1 parts of Si75; Alternatively: 1.5 parts of domaleimide and 3 parts of Si75; Alternatively: 1 part hexamethylenetetramine and 0.5 parts maleic acid; Alternatively: 5 parts hexamethylenetetramine and 0.5 parts maleic acid; Alternatively: 0.5 parts of polymaleimide, 0.5 parts of hexamethylenetetramine, 0.2 parts of Si75, and 0.3 parts of maleic acid; Alternatively: 0.1 parts of a naphthohydrazide derivative and 691 parts of Si; Alternatively: 5 parts of a naphthohydrazide derivative and 1 part of Si69; Alternatively: 10 parts of a naphthohydrazide derivative and 1 part of Si69; Alternatively: 1.5 parts of a naphthohydrazide derivative and 0.5 parts of fumaric acid; Alternatively: 1.5 parts of a naphthohydrazide derivative and 1.5 parts of stearic acid; Alternatively: 1 part of naphthohydrazide derivative, 0.5 parts of Si69 and 0.5 parts of fumaric acid; Alternatively: 2 parts terephthalamide and 0.5 parts Si75; Alternatively: 2 parts terephthalamide, 0.5 parts Si75 and 0.5 parts oxaloacetic acid.

9. A reinforcing pyrolysis carbon black, characterized in that, It is made from raw materials comprising the following parts by weight: 100 parts of pyrolysis carbon black, 0.1-10 parts of main interface reinforcing agent, and 0.1-3 parts of auxiliary interface reinforcing agent; The main interface reinforcing agent includes one or more of nitrogen-containing compounds, compounds containing active double bonds, and sulfur-containing compounds; The interface reinforcing agent includes one or more of coupling agents, organic acid compounds, and amide compounds.

10. The reinforcing pyrolysis carbon black according to claim 9, characterized in that, The pyrolysis carbon black is prepared by a method comprising the following steps: sequentially crushing, magnetically separating and pyrolyzing waste tires.

11. The method for preparing reinforcing pyrolysis carbon black according to claim 9 or 10, characterized in that, Includes the following steps: The pyrolysis carbon black, the main interface reinforcing agent, and the auxiliary interface reinforcing agent are mixed and granulated in sequence to obtain the reinforced pyrolysis carbon black.

12. The preparation method according to claim 11, characterized in that, The mixing is achieved by grinding in a grinder or stirring in a mixer.

13. The preparation method according to claim 11 or 12, characterized in that, The mixing time is 5 to 300 minutes.

14. The preparation method according to claim 11 or 12, characterized in that, The mixing temperature is 0–200°C.

15. The application of the reinforcing pyrolysis carbon black of claim 9 or 10 as a filler or colorant in the tire industry.

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