Key formula of metal deactivator: DMTD
What is DMTD？
Dimercaptothiadiazole (DMTD) is a versatile, sulfur- and nitrogen-containing heterocyclic compound with the chemical formula C2H2N2S3. It is widely used in industrial formulations, particularly as an additive in lubricants, greases, hydraulic fluids, and metalworking fluids. DMTD is an effective Metal Deactivator.DMTD’s unique molecular structure provides it with multifunctional capabilities, including anti-wear, extreme pressure protection, antioxidant properties, and corrosion inhibition. This makes it a critical component in applications where machinery operates under high loads, extreme temperatures, and corrosive environments.
Key Properties and Applications of DMTD
DMTD exhibits several key properties that make it highly valuable in industrial and automotive sectors. Let’s examine these properties in detail:
1. Corrosion Inhibition
One of the most critical functions of DMTD is its role as a corrosion inhibitor. In industrial environments, metal components—especially non-ferrous metals like copper and brass—are vulnerable to degradation due to exposure to moisture, oxygen, and corrosive chemicals.
Mechanism of Action:
DMTD reacts with metal surfaces to form a stable, protective layer. This layer acts as a barrier against corrosive agents such as water and acidic by-products, preventing oxidation and degradation.Applications:
Hydraulic fluids that circulate through intricate metal systems.
Greases used in environments prone to moisture exposure, such as marine applications.
Coolants and engine oils where copper components are present.
Advantages:
DMTD’s high affinity for metal surfaces and its ability to maintain protection even in harsh conditions make it an effective and reliable choice for corrosion prevention.
2. Extreme Pressure (EP) and Anti-Wear (AW) Additive
In machinery operating under extreme loads and high pressure, lubricants must prevent direct metal-to-metal contact to avoid excessive wear. DMTD is highly effective in this regard due to its sulfur-rich composition.
Mechanism of Action:
Under high temperatures and pressure, DMTD decomposes to form sulfur-based reaction products, which create a sacrificial film on metal surfaces. This film reduces friction and prevents surface scuffing, galling, and other forms of wear.Applications:
Gear oils for heavy machinery in construction and mining.
Hydraulic systems subjected to fluctuating pressures.
High-performance automotive engine oils.
Advantages:
DMTD improves the load-carrying capacity of lubricants, making them suitable for extreme operating conditions.
Prolongs the life of critical components, reducing maintenance costs and downtime.
3. Antioxidant Properties
Hydrocarbon-based oils and lubricants are susceptible to oxidation, especially when exposed to high temperatures and oxygen. Oxidation leads to the formation of acidic compounds, sludge, and varnish, which can reduce efficiency and damage machinery.
Role of DMTD:
DMTD and its derivatives act as antioxidants by neutralizing free radicals and halting the oxidation process. This stabilizes the oil, maintaining its performance characteristics over a longer period.Applications:
Industrial lubricants for turbines and compressors.
Automotive oils used in high-temperature environments.
Greases that need to resist degradation over extended service intervals.
Advantages:
Improved thermal stability, ensuring consistent oil performance.
Reduced frequency of oil changes, leading to cost savings.
Cleaner systems with minimal sludge and deposit formation.
4. Compatibility with Formulations
Modern industrial and automotive fluids must meet diverse performance criteria, including compatibility with different metals, seals, and base oil types. DMTD’s versatility allows it to integrate seamlessly into various formulations.
Derivatives and Solubility:
DMTD derivatives, such as alkylated DMTD, are specifically engineered to enhance solubility in non-polar base oils. This modification ensures uniform distribution within the lubricant, optimizing performance.Applications:
Formulations for multi-purpose greases and oils.
Fluids for systems requiring compatibility with both synthetic and mineral-based oils.
Advantages:
Broad compatibility simplifies product development for lubricant manufacturers.
Stable performance across a wide range of temperatures and operating conditions.
Common Uses of DMTD in Industry
DMTD’s unique properties make it indispensable across a variety of industrial applications. Below are some of its most common uses:
1. Lubricants and Greases
DMTD is a cornerstone additive in the lubricant industry, particularly for oils and greases designed for heavy-duty applications.
Why Use DMTD?
Enhances wear protection, reducing damage to moving parts.
Provides excellent resistance to oxidation and corrosion.
Improves load-carrying capacity in high-pressure environments.
Industries:
Automotive: Engine oils, gear oils, and chassis greases.
Heavy Equipment: Lubricants for construction, mining, and agricultural machinery.
2. Hydraulic Fluids
Hydraulic systems rely on precise and reliable performance under high pressure. Contamination, wear, and oxidation can severely impact these systems, but DMTD mitigates these issues.
Benefits in Hydraulic Systems:
Prevents corrosion of metal components in the presence of water.
Enhances anti-wear properties, extending the lifespan of pumps and valves.
Stabilizes fluids under thermal stress.
Applications:
Mobile hydraulic systems in construction equipment.
Industrial hydraulic systems in manufacturing plants.
3. Metalworking Fluids
Metalworking fluids are used for cutting, grinding, and forming metals. These processes generate heat and expose metals to potentially corrosive conditions, making additives like DMTD essential.
Why DMTD is Important:
Protects workpieces and tools from corrosion.
Improves lubricity, reducing tool wear and energy consumption.
Ensures consistent performance in aqueous formulations.
Industries:
Automotive manufacturing.
Aerospace machining and metal forming.
4. Fuel Additives
DMTD’s corrosion protection and anti-wear properties also make it useful in fuel formulations, particularly for diesel and biodiesel.
Benefits in Fuels:
Protects engine components from corrosion caused by fuel impurities.
Reduces wear in fuel pumps and injectors.
Stabilizes fuel against oxidative degradation.
Applications:
Diesel engines in commercial vehicles.
Stationary generators and marine engines.
Advantages of Using DMTD
DMTD offers numerous benefits that make it an essential component in modern lubricants and fluids:
Enhanced Equipment Longevity:
By reducing wear, corrosion, and oxidation, DMTD extends the service life of machinery.Improved Operational Efficiency:
Lubricants containing DMTD reduce friction and energy losses, enhancing system performance.Cost-Effective Performance:
Its multifunctional nature allows formulators to achieve high performance without the need for multiple additives.Environmental Benefits:
DMTD derivatives can be tailored to meet regulatory requirements, including those for biodegradable and low-toxicity fluids.
Supplier of DMTD
UNPChemicals is a professional supplier of high-quality and effective metal deactivators for lubricant manufacturing. Their main products include DMTD-8, DMTD-9, and DMTD-12.
DMTD-8 (Thiadiazole Octyl Mercaptan Condensate)
DMTD-8 is a liquid, ashless metal deactivator known for its extreme pressure and oxidation resistance attributes. This versatile additive is widely employed in various automotive and industrial lubricating oils, as well as metalworking fluids.
DMTD-9 (Thiadiazole Tert-Nonyl Mercaptan Condensate)
DMTD-9 is an organosulfur compound used as an additive in lubricants, fuels, and metalworking fluids. It serves as a corrosion inhibitor, metal deactivator, and anti-wear agent, forming a protective film on metal surfaces to prevent rust and corrosion.
DMTD-12 (Thiadiazole Tert-Dodecyl Mercaptan Condensate)
DMTD-12 is a liquid, ashless metal deactivator known for its extreme pressure and oxidation resistance attributes. This versatile additive is widely employed in various automotive and industrial lubricating oils, as well as metalworking fluids.
UNPChemicals' metal deactivators are designed to enhance the performance and longevity of lubricants by preventing metal-catalyzed oxidation and corrosion, ensuring optimal operation of machinery and equipment.
Conclusion
Dimercaptothiadiazole (DMTD) is a critical additive in industrial and automotive formulations due to its multifunctional properties. From providing corrosion protection and wear resistance to enhancing oxidative stability, DMTD ensures the reliability and efficiency of lubricants, hydraulic fluids, and metalworking fluids across various industries. With advancements in DMTD derivatives, its applications continue to expand, making it a cornerstone of modern lubricant technology.