Coal tar pitch for high-grade roads
A kind of coal tar pitch, high-grade technology, applied in the field of coal tar pitch for grade roads, can solve problems such as easy drumming, flow, complex structure construction troubles, constraints, etc., to reduce environmental pollution, increase use value, and relieve supply tension.
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Embodiment 1
[0024] Weigh the following raw materials in parts by weight:
[0025] 90 parts of coal tar pitch
[0026] 4 copies of SBS
[0027] 3 parts plastic waste
[0028] Star-shaped fluorene polymer 2 parts
[0029] 4 parts polyphosphoric acid
[0030] Add modifier styrene block copolymer SBS, waste plastics, star-shaped fluorene polymer and co-solvent polyphosphoric acid to base coal tar pitch, mix and melt at 170-200°C, and then grind and shear by colloid mill Cut for 30-40 minutes and evenly disperse in asphalt cement to obtain the coal tar pitch for high-grade roads of the present invention.
Embodiment 2
[0032] Weigh the following raw materials in parts by weight:
[0033] 85 parts of coal tar pitch
[0034] 2 copies of SBS
[0035] 2 servings of waste plastic
[0036] Star-shaped fluorene polymer 2 parts
[0037] 4 parts polyphosphoric acid
[0038] Add modifier styrene block copolymer SBS, waste plastics, star-shaped fluorene polymer and co-solvent polyphosphoric acid to base coal tar pitch, mix and melt at 170-200°C, and then grind and shear by colloid mill Cut for 30-40 minutes and evenly disperse in asphalt cement to obtain the coal tar pitch for high-grade roads of the present invention.
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