Product Description
Oxidized Asphalt is a critically engineered material produced through the controlled air-blowing of petroleum-based bitumen, resulting in significantly enhanced physical properties and performance characteristics. This specialized oxidized asphalt undergoes a fundamental transformation in its chemical composition through oxidation at elevated temperatures, converting base asphalt with inherent limitations into a superior product with tailored rheological properties. The manufacturing process involves blowing air through heated petroleum asphalt, which promotes dehydrogenation and polymerization reactions that increase molecular weight and modify the colloidal structure of the material.
The production of this high-performance oxidized asphalt yields substantial improvements in key parameters: significantly elevated softening point, substantially reduced penetration value, and markedly improved temperature susceptibility. These transformations result in a material that demonstrates exceptional high-temperature stability, reduced thermal sensitivity, and enhanced durability under varying environmental conditions. This type of oxidized asphalt exhibits particularly superior performance in applications requiring resistance to deformation under heavy loads and prolonged exposure to elevated temperatures, while simultaneously maintaining adequate flexibility at lower service temperatures.
Key Technical Advantages
Elevated softening point for improved high-temperature performance
Reduced penetration value for enhanced load-bearing capacity
Modified temperature susceptibility for wider application range
Superior aging resistance and durability
Excellent waterproofing and binding characteristics
Performance Characteristics
Softening Point: 85-115°C (ASTM D36)
Penetration at 25°C: 10-30 dmm (ASTM D5)
Ductility at 25°C: ≥3.0 cm (ASTM D113)
Loss on Heating: ≤0.5% (ASTM D6)
Flash Point: ≥250°C (ASTM D92)
Application Specifications
Ideal for industrial roofing and waterproofing systems
Suitable for hydraulic engineering and membrane applications
Recommended for high-stress pavement and specialty construction
Optimal performance in temperature-extreme environments
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Application scope |
Oil-based drilling fluid, synthetic-based drilling fluid |
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Function |
Sealing fractures and reducing filtration loss |
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Mechanism |
Part of it dissolves to form a blocking colloid, and the insoluble part deforms and participates in forming a thin and dense mud cake to seal the formation gaps. |
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Applicable well temperature |
100-180℃ |
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Recommended dosage |
2-4% (mass fraction) |
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