I. Definition and Nature

Petroleum asphalt sheets are solid asphalt products formed through processes such as distillation, oxidation, and blending from crude oil, primarily composed of carbon compounds and their non-metallic derivatives of various molecular weights. They have a fragmented appearance and possess the following characteristics:

• Softening Point: Typically ranges between 100℃ to 110℃, melting into a thick liquid under high temperatures.
• Strong adhesive: Can adhere closely to the surface of mineral materials, forming a waterproof and moisture-proof layer.
• High calorific value: Releases a large amount of heat during combustion, suitable for industrial heating or energy utilization.
• Corrosion Resistance: Excellent tolerance to chemicals such as acids, alkalis, and salts.

Section II: Production Process

The production of petroleum asphalt sheets typically involves the following steps:

1. Raw Material Selection: Processed materials such as vacuum residue from oil refining and deoiled asphalt are used.
2. Heat Treatment: Removes light components through high-temperature oxidation or distillation processes, increasing asphaltene content.
3. Tempering Treatment: Add modifiers (such as rubber, resins, etc.) as required to enhance performance.
4. Forming Processing: After tempering, cool the asphalt and slice it into regular shaped products.

Section 3: Application Fields

Petroleum asphalt sheets, due to their excellent properties, are widely used in various industries:

1. Waterproofing Materials: Serves as the core material for roof waterproofing and felt paper waterproofing, effectively preventing water penetration.
2. Corrosion-resistant coating for metal pipelines and storage tanks, extending the service life of equipment.
3. Oilfield Additives: Used as lubricants or sealants during drilling and oil extraction processes.
4. Rubber Products: Serve as plasticizers or reinforcing agents for rubber, enhancing its flexibility and wear resistance.
5. Recycled Rubber: Serves as a softener in the recycling and utilization of waste rubber, promoting the regeneration of rubber.
6. Pipe anti-corrosion paint: Provides long-lasting anti-corrosion protection for oil and gas pipelines.
7. Hot spray firing: Used as fuel for industrial kilns, replacing part of coal or heavy oil.

IV. Advantages and Features

• Environmental friendliness: Compared to traditional asphalt, petroleum asphalt sheets can reduce harmful gas emissions during the production process.
• Economic: Broad source of raw materials, low cost, and easy to store and transport.
• Versatility: Modified to meet the specific performance requirements of asphalt across various industries.

V. Market and Prospects

With the acceleration of infrastructure and industrial development, the demand for asphalt sheets is continuously growing. Particularly in waterproofing materials, the rubber industry, and the energy sector, their application prospects are vast. In the future, as environmental protection requirements rise, green, high-performance asphalt sheet products will become the focus of R&D.