Bio-based flame-retardant modified asphalt and preparation method thereof
A modified asphalt, bio-based technology, applied in the direction of building structure, building components, building insulation materials, etc., can solve the problems of smoke and toxic gases, thermodynamic instability, poor ventilation conditions, etc., to improve safety and save energy Energy consumption, the effect of solving energy shortage
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[0030] Example 1
[0031] Heat 100 parts of No. 30 hard asphalt at 140-180°C to a fluid state, add 3 parts of Fischer-Tropsch wax to the hard asphalt and shear and stir for 10-30 minutes to obtain warm-mix hard asphalt. Add 2 parts of sebacic acid The octyl ester is added to the warm-mix hard asphalt and mixed evenly, then 2 parts of Ca-Zn stabilizer is added, and the first mixture is obtained after mixing evenly; 2.5 parts of L(+)-tartaric acid is added to 30 parts of modified vegetable asphalt The mixture is uniform to obtain the second mixture; the first mixture and the second mixture are stirred or sheared at 120-160°C for 10-30 minutes, and mixed uniformly, and then 5 parts of microcapsule flame retardant are added to obtain bio-based flame retardant Modified asphalt.
[0032] Preparation of modified vegetable asphalt: first flash the vegetable asphalt to remove water and small molecular volatiles; use silica sol and zirconium oxychloride as raw materials to synthesize Zr-Si ...
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[0033] Example 2
[0034] Heat 100 parts of No. 20 hard asphalt at 140-180°C to a fluid state, add 2.5 parts of Sasobit to the hard asphalt and shear and stir for 10-30 minutes to obtain warm-mix hard asphalt. Add 3 parts of epoxy oleic acid octyl ester Into the warm-mix hard asphalt, mix well, then add 2.5 parts of phosphate ester, and mix well to obtain the first mixture; add 1.5 parts of L(+)-tartaric acid and 1 part of 2-hydroxy-4-n-dodecyloxy Benzophenone was added to 25 parts of modified vegetable asphalt and the mixture was evenly mixed to obtain the second mixture; the first mixture and the second mixture were stirred or sheared at 120-160°C for 10-30 minutes, and then mixed evenly Part of microcapsule flame retardant is added to obtain bio-based flame retardant modified asphalt.
[0035] Preparation of modified vegetable asphalt: first flash the vegetable asphalt to pre-remove water and small molecular volatiles; use silica sol and zirconium oxychloride as raw materials t...
Example Embodiment
[0036] Example 3
[0037] Heat 100 parts of No. 30 hard asphalt at 140-180°C to a fluid state, add 3 parts of palm wax to the hard asphalt and shear and stir for 10-30 minutes to obtain warm-mix hard asphalt. Add 3 parts of acetyl tributyl citrate The ester is added to the warm-mixed hard asphalt and mixed uniformly, then 3 parts of phosphate ester is added, and the first mixture is obtained after mixing evenly; 2.5 parts of (+)-Myrrholactone A is added to 40 parts of modified vegetable asphalt and mixed The material is uniform to obtain the second mixture; the first mixture and the second mixture are stirred or sheared for 10-30 minutes at 120-160°C, and mixed uniformly, and then 10 parts of microcapsule flame retardant are added to obtain a bio-based flame retardant. Sexual asphalt.
[0038] Preparation of modified vegetable asphalt: first flash the vegetable asphalt to pre-remove water and small molecular volatiles; use silica sol and zirconium oxychloride as raw materials to s...
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