Preparation method of quasi-in-situ modified pyrolytic carbon black
A quasi-in-situ, pyrolysis technology, used in fibrous fillers, dyed low-molecular-weight organic compounds, etc., can solve problems such as poor applicability, unfriendly and environmentally friendly pickling methods, and achieve convenient operation and improved interface compatibility. the effect of reducing production costs
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Embodiment 1
[0032] The solid matter obtained from the pyrolysis of waste tires is superfinely pulverized online, while adding borate modifier B-69 (borate modifier B-69 is available on the market), borate modifier B- The amount of 69 is 2% of the amount of solids, the pulverization temperature is 110°C, and the modified pyrolytic carbon black is prepared by keeping it in an ultrafine pulverization environment for 5 seconds. The ash content of the modified pyrolysis carbon black is less than or equal to 20%.
[0033] The particle size comparison results of modified pyrolysis carbon black and unmodified pyrolysis carbon black are shown in Table 1-1:
[0034] Table 1-1. Characteristic particle size of modified pyrolysis carbon black and unmodified pyrolysis carbon black
[0035]
[0036] The identification of 3 kinds of modified pyrolytic carbon black and N660 in natural standard rubber (standard: GB / T 3780.18-2017) is shown in Table 1-2:
[0037] Table 1-2. Natural rubber standard rubber test form...
Embodiment 2
[0052] Add borate modifier B-69 or stearic acid modifier (modifier dosage is 2% of solids dosage) while online ultrafine pulverization of solids obtained by waste tire pyrolysis, pulverization temperature 150 ℃, keep for 5s in the ultrafine grinding environment to obtain modified pyrolysis carbon black.
[0053] The composition results of modified pyrolysis carbon black in the V-belt formula are shown in Table 2-1:
[0054] Table 2-1. V-belt test formula
[0055]
[0056] Note: National Standard No. 1 glue is a product of Yunnan Agricultural Reclamation Group Co., Ltd., and a product of N330-Jiangxi Black Cat Carbon Black Co., Ltd.
[0057] Test the Mooney viscosity of the four triangle belt formulas in Table 2-1, compare the influence of different pyrolytic carbon blacks on the Mooney viscosity, and the results are shown in Table 2-2:
[0058] Table 2-2. The influence of different pyrolytic carbon blacks on Mooney viscosity
[0059]
[0060]
[0061] Note: ML1+4, 100℃, where M means Mo...
Embodiment 3
[0078] The solids obtained from the pyrolysis of waste tires are superfinely pulverized online, while adding borate B-69 or silane coupling agent (modifier dosage is 2% of the solids dosage), the grinding temperature is 140℃, and the superfine grinding environment It is maintained for 10s to obtain modified pyrolysis carbon black.
[0079] See Table 3-1 for all-steel sidewall rubber:
[0080] Table 3-1. Test formula of all-steel side rubber
[0081]
[0082]
[0083] Note: National Standard No. 1 glue is a product of Yunnan Agricultural Reclamation Group Co., Ltd., BR9000 is a product of Yanshan Petrochemical, and N375 is a product of Jiangxi Black Cat Carbon Black Co., Ltd.
[0084] The comparison results of the effects of different modified pyrolysis carbon blacks on Mooney viscosity are shown in Table 3-2:
[0085] 3-2. The influence of different pyrolytic carbon blacks on Mooney viscosity
[0086]
[0087] Note: ML1+4, 100℃, where M means Mooney, L means large rotor, 1--preheating t...
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