Coal tar pitch for high-grade roads
A high-grade technology of coal tar pitch, applied in the field of coal tar pitch of grade road, can solve the problems of restriction, easy to bulge, flow, poor stability, etc., and achieve the effect of alleviating supply shortage, reducing environmental pollution, and strong tensile performance.
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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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