SMA asphalt concrete modifier and preparation method thereof
A technology of asphalt concrete and modifier, applied in the field of asphalt concrete, can solve the problem that SBS modifier and lignin fiber are difficult to melt and granulate together, so as to improve cohesiveness and high temperature performance, reduce granulation temperature, prevent The effect of leakage
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[0072] Example 1
[0073] 1. Material preparation
[0074] Weigh the ingredients in the following proportions by weight,
[0075]
[0076] Among them, SBS is a linear 791H produced by Yueyang Petrochemical. Lignocellulose is flocculent and is produced by JRS in Germany. The solubilizer is a 1:1 ratio mixture of naphthenic crude oil produced from China Sea Asphalt minus the third line of furfural extracted oil obtained through furfural refining and naphthenic oil produced from China Sea Asphalt. The co-solvent is EVA with a vinyl acetate content of 19% and a melt index of 16g / 10min produced by Yanshan Petrochemical. The crosslinking agent is powdered sulfur with a content of 99.5%, produced by Maoming Petrochemical. The accelerator is a mixture of commercially available zinc oxide and commercially available zinc dibenzyl dithiocarbamate in a ratio of 1:1.
[0077] 2. Preparation of SMA asphalt concrete modifier
[0078] 2.1 Mix the SBS powder with the cosolvent and the solubilizer u...
Example Embodiment
[0082] Example 2
[0083] 1. Material preparation
[0084] Weigh the ingredients in the following proportions by weight,
[0085]
[0086] Among them, SBS is star 4303 produced by Yueyang Petrochemical. Lignocellulose is flocculent and is produced by JRS in Germany. The solubilizer is a 1:1 ratio mixture of naphthenic crude oil produced from China Sea Asphalt minus three-line furfural extraction oil and 110# asphalt. The co-solvent is EVA with a vinyl acetate content of 16% and a melt index of 19g / 10min produced by Yanshan Petrochemical. The crosslinking agent is powdered sulfur with a content of 99.5%, produced by Maoming Petrochemical. The accelerator is a mixture of commercially available zinc oxide: zinc dibenzyl dithiocarbamate: stearic acid in a ratio of 3:1:1.
[0087] 2. Preparation of SMA asphalt concrete modifier
[0088] 2.1 Mix the SBS powder with the cosolvent and the solubilizer uniformly for 40 minutes at 160°C. At this time, the SBS powder is uniformly dispersed in ...
Example Embodiment
[0092] Example 3
[0093] 1. Material preparation
[0094] Weigh the ingredients in the following proportions by weight:
[0095]
[0096] Among them, SBS is a mixture of linear 791H and star 4303 produced by Yueyang Petrochemical in a ratio of 1:1. Lignocellulose is flocculent and is produced by JRS in Germany. The solubilizer is a mixture of 200# pitch and naphthenic oil produced from China Sea Asphalt in a ratio of 1:1. The co-solvent is EVA with a vinyl acetate content of 28% and a melt index of 400g / 10min produced by DuPont. The crosslinking agent is liquid sulfur with a content of 99.5%, produced by Maoming Petrochemical. The accelerator is a mixture of commercially available zinc oxide: zinc ethyl phenyl dithiocarbamate: stearic acid in a ratio of 3:1:1.
[0097] 2. Preparation of SMA asphalt concrete modifier
[0098] 2.1 Mix the SBS powder with the cosolvent and the solubilizer uniformly for 30 minutes at 130°C. At this time, the SBS powder is uniformly dispersed in the co...
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