Anti-aging agent and anti-aging asphalt
An anti-aging agent and anti-aging technology, which is applied in the field of road petroleum asphalt, can solve problems such as the complex chemical composition and structure of asphalt, the cost of toxic raw materials of anti-aging agents, and restrictions on the promotion and application of asphalt, so as to improve the performance of heat-oxidative aging resistance and Thermal storage stability, avoidance of thermo-oxidative aging, effect of suppressing thermo-oxidative aging
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[0039] Example 1
[0040] Weigh 10 parts of nano carbon black, 40 parts of p-phenylenediamine, 10 parts of p-cresol, 10 parts of C5 petroleum resin, and 30 parts of rubber oil by mass.
[0041] Put the above carbon five petroleum resin, nano carbon black and rubber oil in a metal container, stir for about 10 minutes with a mixer at a speed of 500 rpm at 100±5℃; maintain the above temperature, add p-phenylenediamine and p-cresol, and Stir at 500 rpm for about 10 minutes to obtain an anti-aging agent.
[0042] Heat the base asphalt A (with a penetration of 80dmm at 25°C and a softening point of 49°C) to 145-150°C, add the above-mentioned anti-aging agent, and stir at 750 rpm for about 30 minutes to obtain an anti-aging asphalt. The anti-aging agent The mass content is about 1%.
[0043] Table 1 shows the comparison results of penetration (0.1mm), softening point (℃) and ductility (cm) of base asphalt A and anti-aging asphalt before and after TFOT aging.
[0044] Table 1 Comparison of ba...
Example Embodiment
[0049] Example 2
[0050] Weigh 15 parts of nano carbon black, 40 parts of p-phenylenediamine, 15 parts of p-cresol, and 30 parts of rubber oil by mass.
[0051] Put the above-mentioned nano carbon black and rubber oil in a metal container, use a mixer at 100±5℃ to stir at 500rpm for about 10min; maintain the above temperature, continue to add p-phenylenediamine and p-cresol, and continue at 500rpm Stir at a rate of about 10 minutes to obtain an anti-aging agent.
[0052] Heat the base asphalt B (with a penetration of 70dmm at 25°C and a softening point of 50°C) to 145-150°C, add the above-mentioned anti-aging agent, and stir at 750 rpm for about 30 minutes to prepare an anti-aging asphalt. The mass content of the agent is about 0.5%.
[0053] Table 2 shows the comparison results of penetration (0.1mm), softening point (℃) and ductility (cm) of base asphalt B and anti-aging asphalt before and after TFOT aging.
[0054] Table 2 Comparison of base asphalt B and anti-aging asphalt before...
Example Embodiment
[0058] Example 3
[0059] Weigh 20 parts of nano carbon black, 45 parts of p-phenylenediamine, 5 parts of p-cresol, and 30 parts of rubber oil by mass.
[0060] Put the above-mentioned nano carbon black and rubber oil in a metal container, use a mixer at 100±5℃ to stir at 500rpm for about 10min; maintain the above temperature, and continue to add p-phenylenediamine and p-cresol, continue to run at 500rpm Stir at a rate of about 10 minutes to obtain an anti-aging agent.
[0061] Heat the base asphalt C (50 dmm penetration at 25°C, and 62°C softening point) to 145-150°C, add the above-mentioned anti-aging agent, and stir at 750 rpm for about 30 minutes to prepare the anti-aging asphalt. The mass content of the agent is about 1%.
[0062] Table 3 shows the comparison results of penetration (0.1mm), softening point (℃) and ductility (cm) of base asphalt C and aging-resistant asphalt before and after TFOT aging.
[0063] Table 3 Comparison of base asphalt C and anti-aging asphalt before an...
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