Application of epoxy oil repellent
Application of epoxy oil repellent
Epoxy oil repellent is a chemical additive that adds specific ingredients to the epoxy coating system to make it resistant to oil and grease penetration. Its core advantage is to enhance the coating's ability to protect against oil media while maintaining the original mechanical strength, chemical corrosion resistance and adhesion of epoxy resin. The following is a specific application scenario and technical analysis:
1. Application field
Petrochemical industry
Anti-corrosion of the inner wall of the storage tank: The inner wall of crude oil and refined oil storage tanks is in contact with oil media for a long time. Traditional coatings are prone to bubbling and shedding of the coating due to oil penetration. Epoxy oil repellent can form a dense protective layer to prevent oil penetration and extend the service life of the storage tank.
Oil pipeline protection: Underground oil pipelines are susceptible to grease and moisture in the soil. Epoxy oil repellent can enhance the coating's impermeability and reduce the risk of pipeline corrosion.
Food processing and packaging
Grease storage equipment: Food-grade epoxy oil repellent is used in grease storage tanks and delivery pipelines to prevent grease residue pollution and meet food safety standards.
Packaging material coating: Improve the oil resistance of packaging cardboard and plastic film, and extend the shelf life of food.
Industrial equipment protection
Mechanical lubrication system: Prevent lubricating oil from penetrating into the metal substrate and reduce equipment corrosion.
Mold protection: Reduce the adhesion of oil stains on the mold surface and improve demoulding efficiency.
Buildings and infrastructure
Underground garage floor: Prevent motor oil and gasoline from penetrating and contaminating concrete, and improve floor durability.
Sewage treatment facilities: Enhance the equipment's ability to resist oil stains and reduce maintenance costs.
2. Technical advantages
Anti-oil mechanism
Reduce surface tension: The oil repellent molecules form an oleophobic layer on the coating surface, making it difficult for oil stains to adhere.
Enhance coating density: Reduce the porosity of the coating through molecular structure optimization, and prevent oil medium from penetrating.
Performance indicators
Oil resistance: It can withstand a variety of oils such as diesel, motor oil, and lubricating oil. The contact angle is greater than 110°, and oil stains are easy to roll off after contact.
Chemical resistance: Maintain the original acid, alkali, and salt corrosion resistance of epoxy resin.
Mechanical properties: coating hardness ≥ 2H, wear resistance passes Taber wear test (CS-10 wheel, 500g load) > 500 turns.
Construction compatibility
Additional amount: usually 0.5%-2% of the total coating, does not affect the original construction process.
Curing conditions: compatible with epoxy resin curing system, curing temperature 5-40℃, curing time 2-24 hours.
3. Precautions
Formula design: the type and addition amount of oil repellent need to be adjusted according to the type of oil (animal and vegetable oil, mineral oil).
Construction environment: the surface of the substrate needs to be dry and clean, humidity <80%, temperature >5℃.
Safety protection: oil repellent may contain organic solvents, protective equipment should be worn during construction to avoid inhalation or skin contact.
4. Development trend
Environmental protection: develop low VOC, solvent-free epoxy oil repellent, in line with the trend of green manufacturing.
Multifunctional: integrate multiple functions such as oil repellent, antibacterial, self-cleaning, etc. to expand application scenarios.
Intelligence: Dynamic adjustment of oil resistance is achieved through nanotechnology to adapt to complex working conditions.
Summary: Epoxy oil repellent has shown significant advantages in the fields of petrochemicals, food processing, industrial equipment, etc. by optimizing the surface performance and density of the coating. In the future, with the increase in environmental protection and intelligence needs, its technological iteration will further promote the upgrading of industry applications.