Compatibility of Hydraulic Oil Compound with Base Oil
During the operation of a hydraulic system, the performance of hydraulic oil directly determines the equipment's service life, operating efficiency, and maintenance cost, while the core performance of hydraulic oil is determined by the compatibility effect of "base oil + compound additive". According to industry data, approximately 60% of hydraulic system failures stem from improper selection of hydraulic oil or an imbalance in the compatibility between compound additives and base oil. Therefore, mastering the compatibility logic of the two is of crucial significance for enterprises to reduce operation and maintenance costs and enhance equipment reliability.
1. What is a hydraulic oil compound additive?
Hydraulic oil compound additives are a combination of functional additives composed of multiple single agents such as anti-wear agents, antioxidants, rust inhibitors, anti-foaming agents, and metal deactivators, compounded in specific proportions. Their core function is to compensate for the performance deficiencies of base oil itself, endow hydraulic oil with key properties such as anti-wear, anti-rust, anti-oxidation, and anti-emulsification, and meet the operating requirements of hydraulic systems under different working conditions.
From the perspective of industry supply,UNPChemicals is a professional supplier of high-quality and high-performance hydraulic oil additives, whose products cover scenarios with different zinc content requirements, are adaptable to various base oils and operating conditions, and the core products include three categories:
High-Zinc Anti-Wear Hydraulic Oil Additive UNP AH502A: This is a zinc-containing additive formulated for high-load operating conditions, excelling in anti-wear, anti-rust, and anti-oxidation properties, with high load-bearing capacity, and can be used to formulate high-performance anti-wear hydraulic oils. According to actual test data, when 0.6% of this product is added to 46# Group I base oil, the PB value (a key indicator of anti-wear performance) reaches 90 kg, and the Pd value reaches 126 kg, far exceeding the industry's basic standards; it also has excellent filtration performance - even in a water-containing environment and when using a precision filter, the filtration efficiency can still meet the equipment requirements, and no additional anti-foaming agent is needed when formulating hydraulic oil, enabling low-foam characteristics directly (the foam properties of Procedures I/II/III are 20/0, 10/0, 10/0 ml/ml respectively, far lower than the standard limits of ≤150/0, ≤75/0). In addition, it has excellent solubility in a wide range of base oils, including mineral base oils, synthetic base oils, and CTL (coal-to-liquid) base oils, and complies with mainstream standards from multiple countries such as GB11118.1-2011, DIN51524 Part2/3, Eaton Vickers I-286-S, etc., suitable for formulating anti-wear and general anti-wear hydraulic oils, with a recommended addition amount of 0.6%-0.8% (mass fraction), and compatible with Group I and Group II base oils.
Low-Zinc Hydraulic Oil Compound UNP AH502B: Developed for scenarios with moderate restrictions on zinc content, it reduces the proportion of zinc while maintaining anti-wear performance, balancing environmental protection requirements with equipment protection needs, suitable for industrial sectors with basic emission regulations, and can be compatible with Group II and Group III mineral base oils as well as some synthetic base oils.
Zinc-Free Hydraulic Oil Compound UNP AH502C: Completely free of zinc, it uses an ashless anti-wear system, meets strict environmental standards such as those of the European Union's RoHS and the US EPA, is suitable for industries with zero tolerance for heavy metals such as new energy, food processing, and electronics, has excellent compatibility with fully synthetic base oils (such as PAO and esters), and also has good oxidation stability and low-temperature fluidity.
In short, hydraulic oil compound additives are not single additives, but rather "performance customization tools" - by selecting different types of compound additives (such as high-zinc, low-zinc, and zinc-free) and combining them with the characteristics of base oils, hydraulic oil products that meet specific operating conditions, standards, and environmental requirements can be formulated.
2. Compatibility Principles of Various Base Oils and Additive Packages
Base oil is the carrier of hydraulic oil, accounting for over 90%. Its molecular structure, viscosity index, and refining degree directly affect the dissolution efficiency and performance of compound additives. Currently, the mainstream base oils in the industry are divided into mineral base oils (Group I, Group II, Group III), synthetic base oils (PAO, esters, polyethers, etc.), and CTL base oils. The combination of different types of base oils and compound additives must follow the three principles of "solubility first, performance matching, and standard compliance", which are as follows:
(1) The matching logic of mineral base oil and compound additives
Mineral base oils are refined from petroleum, with low cost and wide availability, and are the most commonly used type of base oil in the industrial field. Their core difference lies in the degree of refinement (Group I < Group II < Group III), and compound additives need to be selected specifically:
Group I base oil: It has the lowest degree of refinement, relatively high sulfur content (usually >0.03%), low viscosity index (80-120), medium oxidation stability, and is suitable for medium and low load, normal temperature working conditions (such as ordinary machine tools, small hydraulic pumping stations). Compounding principle: Prioritize compound additives with strong solubility and outstanding antioxidant performance, such asUNP AH502A - its sulfur content reaches 13.5% (mass fraction) and phosphorus content is 6.5%, which can form a synergistic anti-wear system with the sulfides in Group I base oil, while compensating for the insufficient oxidation stability of Group I base oil through high-efficiency antioxidants (it has been measured that after adding 0.6% UNP AH502A to 46# Group I base oil, the rotary oxygen nitrogen value reaches 432 minutes, far exceeding the average level of 300 minutes for ordinary compound additives). Note: Group I base oil has weak compatibility with zinc-free compound additives (such as UNP AH502C), because the ashless anti-wear system requires a base oil carrier with a higher degree of refinement, which is prone to uneven dissolution problems.
Group II base oil: After hydrorefining treatment, it has a sulfur content of <0.03%, a viscosity index of 120-140, oxidation stability and low-temperature fluidity superior to Group I, and is suitable for medium to high load and large temperature difference working conditions (such as construction machinery and medium-sized compressor hydraulic systems). Compounding principle: High-zinc or low-zinc compound additives can be flexibly selected —— if the working condition load is relatively high (such as excavators and loaders), chooseUNP AH502A, using its high-zinc anti-wear system to improve load-carrying capacity; if the working condition has a slight restriction on zinc content (such as some export equipment), chooseUNP AH502B, while reducing zinc content, maintaining anti-wear performance through the phosphorus-nitrogen synergistic system. Note: The addition amount of Group II base oil and compound additives needs to be controlled at 0.6%-0.9% to avoid the compound additives dissolving too quickly due to the improvement of refining degree, which may instead affect anti-foaming performance.
Group III base oil: Deep hydrorefined, with sulfur content <0.003%, viscosity index >140, oxidation stability close to synthetic base oil, suitable for high-load, long oil change interval working conditions (such as wind power equipment, large injection molding machines). Compounding principle: Prioritize low-zinc or zinc-free compound additives, such asUNP AH502B (low zinc),UNP AH502C (zinc-free) — Group III base oil has extremely low sulfur content, and the sulfur-zinc synergy effect of high-zinc compound additives (UNP AH502A) is difficult to fully exert, and may reduce oxidation stability due to the reaction of zinc with the hydrogenated components in the base oil; while the ashless anti-wear system (such as phosphorus-nitrogen compounds) of low-zinc/zinc-free compound additives can be compatible with the saturated molecular structure of Group III base oil, improving anti-wear life and environmental friendliness.
(2) Compatibility Logic of Synthetic Base Oil and Compound Additive
Synthetic base oils are prepared through chemical synthesis, possessing excellent high-temperature stability, low-temperature fluidity (pour point can reach below -40°C), and oxidation stability, suitable for extreme working conditions (such as high temperature, low temperature, and high pressure), but with higher costs, and need to be paired with highly compatible compound additives to avoid performance waste:
PAO (Poly Alpha Olefin) base oil: The most versatile synthetic base oil, with a high viscosity index (120 - 200) and good hydrolytic stability, suitable for low-temperature (such as outdoor equipment in northern regions) and high-temperature (such as metallurgical hydraulic systems) working conditions. Compounding principle: Choose zinc-free or low-zinc compound additives, such asUNP AH502C (zinc-free) - PAO has a stable molecular structure, and the ashless anti-wear system can fully exert its performance without causing oxidative degradation of PAO due to zinc; meanwhile, UNP AH502C has excellent air release properties (air release time at 50°C is only 3 minutes, far lower than the industry standard of 10 minutes), which can solve the problem of PAO base oil easily entraining air under high pressure.
Ester base oil : It has strong polarity, good compatibility with sealing materials, outstanding low-temperature fluidity (pour point below -50°C), and is suitable for high-end fields such as aerospace and precision electronics. Compatibility principle: A zinc-free compound additive (such as UNP AH502C) must be selected, and the compatibility of the compound additive with esters must be confirmed - ester base oil easily undergoes saponification reactions with metal-containing additives (such as zinc salts), leading to a decrease in anti-emulsification performance; while the ashless system of UNP AH502C can avoid this problem, and its excellent hydrolytic stability (copper strip weight loss is only 0.02mg, total acidity of the water layer is 0.03mg) can meet the high hydrolysis requirements of ester base oil.
Polyether base oil: Outstanding anti-combustion performance, suitable for high-temperature and flammable working conditions (such as steel and glass manufacturing), but with strong polarity and poor compatibility with mineral oil. Compatibility principle: Only compatible with zinc-free compound additives, and a special formula must be selected —— UNP AH502C optimizes the antioxidant components for polyether base oil, which can enhance its anti-degradation ability at high temperatures and avoid the precipitation of compound additives caused by polarity differences.
(3) Compatibility Logic between CTL Base Oil and Additive Package
CTL base oil (coal-to-liquid base oil) is a new type of mineral base oil, converted from coal, with performance approaching that of Group II base oils, a viscosity index of 120-130, low sulfur content (<0.01%), and lower cost than synthetic base oils. It is suitable for scenarios with moderate performance requirements and a pursuit of cost-effectiveness. Compounding principle: The compounding logic of Group II base oils can be referred to, but it should be noted that CTL base oil has extremely low aromatic content (<1%), which may affect the dissolution rate of additives - it is recommended to choose additives with excellent solubility, such asUNP AH502A, which can dissolve quickly in CTL base oil (fully dispersed after 30 minutes of stirring at 25°C) and has stable anti-emulsification performance (oil-water separation time of only 7 minutes at 40-37-3, meeting ASTM D1401 standard), avoiding performance fluctuations caused by uneven dissolution.
3. Potential Problems Caused by Improper Adaptation and Solutions
Improper compatibility between hydraulic oil compound additives and base oils not only affects "substandard performance" but may also trigger a chain of failures, increasing the operation and maintenance costs of enterprises. Based on industry failure statistics and on-site cases from the UNPChemicals technical team, common problems can be classified into four categories, each corresponding to a clear solution path:
(1) Solubility imbalance: Precipitation of compound agents, filter clogging
Problem manifestation: Hydraulic oil shows stratification, precipitation, or flocculent substances, and precision filters (such as 10μm filter elements) are frequently clogged, leading to a decrease in system pressure, insufficient flow, and in severe cases, causing idling wear of the pump body.
Core Reasons: 1. The polarity of the compound additive does not match that of the base oil (e.g., a zinc-free compound additive paired with Group I base oil); 2. The addition amount of the compound additive is too high (e.g., exceeding 1.0%), exceeding the dissolution limit of the base oil; 3. The mixing temperature is too low (<15°C), resulting in slow molecular motion and decreased dissolution efficiency.
Solutions: 1. Re-select a suitable compound agent —— If using Group I base oil, replace it withUNP AH502A (high-zinc type, polar-matched with Group I base oil, actually measured to be completely soluble at 15°C with 0.8% addition); if using fully synthetic base oil, replace it withUNP AH502C (zinc-free type, polar-compatible with PAO and esters); 2. Control the addition amount: Strictly add within the recommended range of the compound agent (UNP AH502A 0.6%-0.8%, UNP AH502B 0.7%-0.9%, UNP AH502C 0.8%-1.0%) to avoid overdosage; 3. Optimize the mixing process: Preheat the base oil to 30-40°C before adding the compound agent, control the stirring speed at 300-500 r/min, and stir for no less than 30 minutes to ensure uniform dispersion.
(2) Poor demulsibility: Oil and water cannot be separated, corroding equipment
Problem manifestation: After water enters the hydraulic system (e.g., cooler leakage, humid environment), the hydraulic oil and water form a stable emulsion that cannot be separated by sedimentation in the oil tank, resulting in: 1. Failure of anti-rust performance, with metal components (e.g., valve spools, cylinder barrels) rusting; 2. Decline in anti-wear performance, accelerating wear of pump bodies and gears; 3. Abnormal changes in viscosity, causing slow system response.
Core Reasons: 1. The anti-emulsification components of the compound additive are incompatible with the base oil (e.g., high-zinc compound additives paired with Group III base oils, where zinc salts readily react with the hydrogenated components in the base oil, disrupting the anti-emulsification system); 2. The base oil has a low degree of refinement (e.g., Group I base oils), and the aromatics and gums it contains readily adsorb moisture, exacerbating emulsification.
Solutions: 1. Replace the type of compound additive: If using Group III base oil, replace the high-zinc compound additive (such as common products) withUNP AH502B (low-zinc type), whose anti-emulsification system has stronger compatibility with Group III base oil. After adding 0.8% to 46# Group III base oil in actual tests, the anti-emulsification time (40-37-3) is only 8 minutes; if using Group I base oil, chooseUNP AH502A, whose dedicated anti-emulsifier can quickly break emulsions (7 minutes in actual tests), far exceeding the ≤30 minutes requirement of the GB/T 7305 standard; 2. Strengthen moisture control: Add a dehydration device (such as a centrifugal water separator) to the oil tank, regularly detect the moisture content in the oil (control it below 0.1%), and avoid the cause of emulsification; 3. Short-term emergency treatment: If slight emulsification has already occurred, add UNPChemicals' dedicated demulsifier (100% compatible with its compound additives), stir at an addition rate of 0.1%-0.2%, and oil-water separation can be achieved within 2 hours.
(3) Insufficient anti-wear performance: equipment wear accelerates and lifespan shortens
Problem manifestation: The noise of hydraulic pumps (such as vane pumps and piston pumps) increases, the output pressure drops, and after disassembly, obvious scratches are found on the surfaces of the rotor and stator. Oil sample testing shows that the content of metal abrasive particles exceeds the standard (>150 ppm), and the average service life of the equipment is shortened by 30%-50%.
Core Reasons: 1. The anti-wear system of the compound additive does not match the working condition load (e.g., low-zinc compound additive used in high-load hydraulic hammers); 2. Incorrect selection of base oil viscosity (e.g., 46# base oil used in low-temperature working conditions, where viscosity reduction leads to oil film rupture and the compound additive fails to form effective protection); 3. Insufficient addition of the compound additive (e.g., only 0.4% added, not reaching the recommended lower limit).
Solutions: 1. Select the compound additive according to the load: For high-load working conditions (pressure > 25 MPa, such as the main pump of an excavator), a high-zinc compound additiveUNP AH502A must be selected. Its zinc content reaches 7.2% (mass fraction), which can form a stable zinc sulfide and zinc phosphate protective film on the metal surface. The PB value reaches 90 kg, capable of withstanding high impact loads; for medium- and low-load working conditions (pressure 10 - 25 MPa), select UNP AH502B; for working conditions with no load restrictions and requiring environmental protection, select UNP AH502C; 2. Match the base oil viscosity: Select the viscosity grade according to the ambient temperature (e.g., select 46# for -10°C to 40°C, 32# for -20°C to 20°C) to ensure the stability of the oil film thickness; 3. Add the compound additive in sufficient quantity: Add it strictly according to the recommended amount. For example, UNP AH502A should be added at a minimum of 0.6% in Group I base oil. If the working conditions are harsh (e.g., high temperature > 60°C), it can be appropriately increased to 0.8%, but not exceeding 1.0% (to avoid affecting anti-foaming properties).
(4) Poor oxidation stability: The oil deteriorates prematurely, and the oil change interval is shortened.
Problem manifestation: After 3-6 months of use, the hydraulic oil turns black, its acid value increases (>2.0mgKOH/g), sludge appears at the bottom of the oil tank, clogging the filter element and throttle valve, the oil change interval is only 50% of the design value, and the operation and maintenance costs increase significantly.
Core Reasons: 1. The antioxidant components of the compound additive do not match the base oil (e.g., a common compound additive paired with Group III base oil results in rapid antioxidant depletion); 2. Excessively high system temperature (>65°C) accelerates oil oxidation; 3. The absence of a metal deactivator in the compound additive leads to catalytic oxidation of copper and iron components.
Solution : 1. Choose the appropriate antioxidant composite: Class III base oil or synthetic base oil is preferred UNP AH502C (Zinc-free), which contains efficient phenolic antioxidants and amine antioxidants that work together to improve oxidation stability by more than 40% (measured rotating oxygen and nitrogen value for 450 minutes); Class I and II base oils combined with UNP AH502A, whose sulfur-phosphorus-zinc system can inhibit sulfide oxidation in the base oil; 2. Control system temperature: Check the cooling system (such as radiator, fan) to ensure that the oil temperature is stable at 30-55 ℃ and avoid exceeding 60 ℃; 3. Supplementary metal passivator: If using old equipment (metal parts are prone to rust), UNPChemicals special metal passivator (100% compatible with its composite agents) can be added to the composite agent at 0.05% -0.1% to inhibit metal ion catalytic oxidation.
4. How to Improve Overall Performance through Adaptation
The correct matching of "base oil + compound additive" not only avoids malfunctions but also achieves a performance improvement of "1+1>2" - through targeted combination, significant optimization can be achieved in core indicators such as anti-wear life, oxidation stability, and energy-saving efficiency. The specific approach, combined with the actual test data of UNPChemicals products, is as follows:
(1) Improve anti-wear life: Reduce equipment wear rate by more than 30%
Anti-wear performance is the core requirement of hydraulic systems. Through the combination of "high-load compound additive + compatible base oil", a more stable protective film can be formed, extending the service life of components. TakingUNP AH502A + 46# Group I base oil (addition amount 0.6%) as an example:
Laboratory Tests: Through the ASTM D4172 Four-Ball Wear Test, the wear scar diameter is only 0.45mm (standard requirement ≤0.55mm), far lower than the 0.52mm of ordinary compound agents; the gear machine test (SH/T 0306) failure level reaches 10 (the highest level), capable of withstanding high-speed loads of 1200r/min;
Field application: After a construction machinery enterprise replaced the original ordinary compound with UNP AH502A, the average service life of the hydraulic pump increased from 2,000 hours to 3,500 hours, the wear rate decreased by 43%, and the annual cost of pump replacement was reduced by approximately 120,000 yuan.
Key adaptation logic: The zinc salts in high-zinc compound additives (such as UNP AH502A) react with sulfur and phosphorus elements in base oils under high pressure to form a "zinc sulfide - zinc phosphate" double-layer protective film. The sulfur content in Group I and Group II base oils can promote the formation of zinc sulfide, while Group III base oils need to be paired with an ashless anti-wear system of low-zinc / zinc-free compound additives (such as UNP AH502C), which forms a chemically adsorbed film on the metal surface through phosphorus-nitrogen compounds to prevent the reaction between zinc salts and the hydrogenated components of base oils.
(2) Extended oxidation stability: Oil change interval extended by 50%
Oxidation stability directly determines the oil change interval. By combining "antioxidant compound additive + highly refined base oil", the deterioration rate of the oil can be significantly reduced. Take UNP AH502C + PAO 46# fully synthetic base oil (addition amount 0.9%) as an example:
Measured data: The rotary oxygen nitrogen value (150°C) reaches 480 minutes (ordinary compound + mineral base oil only 300 minutes), after the thermal stability test (135°C, 168h), the acid value change rate is only 0.90% (standard requirement ≤2.0%), the 40°C viscosity change rate is 1.42% (standard requirement ≤5.0%), and the copper rod weight loss is 0.1mg/200ml (almost no corrosion);
Actual effect: After a wind power enterprise adopted this combination, the oil change cycle of the hydraulic system was extended from 6 months to 9 months, reducing the number of oil changes by 2 times per year and saving approximately 80,000 yuan in oil procurement and labor costs.
Key Adaptation Logic: The saturated molecular structure of fully synthetic base oils (such as PAO) inherently has excellent oxidation stability. When combined with the ashless antioxidant system of the zinc-free compound additive (UNP AH502C), it can avoid the catalytic oxidation of metal ions (zinc). Meanwhile, the antioxidants and base oil molecules work synergistically to delay the free radical chain reaction, thereby extending the oxidation life.
(3) Optimize anti-emulsification and air release properties: Enhance system stability
Water and air ingress into the hydraulic system are common hidden hazards. Through the combination of "demulsifying compound agent + low-viscosity base oil", it can quickly break emulsions and expel air, avoiding cavitation and corrosion. TakeUNP AH502A + 32# Group II base oil (addition amount 0.7%) as an example:
Demulsibility: Tested according to ASTM D1401, the oil-water separation time for 40-37-3 is only 7 minutes (standard ≤30 minutes), and even at a water content of 2%, complete separation can still be achieved within 10 minutes, far superior to the 25 minutes of ordinary compound agents;
Air release property: Tested according to SH/T 0308, the air release time at 50°C is 3 minutes (standard ≤ 10 minutes), which can quickly expel air from the system and avoid pump cavitation noise (reduced from 85dB to 72dB).
Key adaptation logic: Low-viscosity base oils (such as 32#) have strong molecular mobility, which helps moisture and air quickly migrate to the top of the oil tank. The dedicated demulsifier (such as polyether amines) in UNP AH502A can disrupt the oil-water interface film, and the air release agent (such as silicone) can accelerate the aggregation and floating of bubbles. The two work together to enhance system stability.
(4) Achieve energy conservation and consumption reduction: Reduce energy consumption by 5%-8%
The energy consumption of the hydraulic system mainly stems from the frictional resistance of the oil. By combining "low-viscosity base oil + high-efficiency anti-wear compound", the friction coefficient can be reduced, achieving energy savings. Take UNP AH502C + PAO 32# fully synthetic base oil (addition amount 0.8%) as an example:
Friction coefficient test: According to ASTM D5183 test, the friction coefficient is only 0.08 (0.12 for ordinary mineral hydraulic oil), a reduction of 33%;
Energy Consumption Comparison: After a certain injection molding enterprise replaced the original 46# mineral hydraulic oil (ordinary compound additive) with this combination, the power of the hydraulic motor decreased from 15kW to 14.2kW, resulting in a daily electricity savings of 19.2 kWh per unit of equipment, an annual electricity savings of approximately 7,000 kWh, equivalent to 5,600 yuan in electricity costs (calculated at 0.8 yuan/kWh).
Key Adaptation Logic: Fully synthetic base oil (PAO) has excellent low-temperature fluidity and a high viscosity index, enabling it to maintain low viscosity at low temperatures (reducing starting resistance) and stable oil film at high temperatures (avoiding increased friction); the ashless anti-wear system of the zinc-free compound additive (UNP AH502C) has a lower friction coefficient and does not increase frictional resistance due to zinc salt deposition, thereby achieving energy savings.
5.Conclusion
The compatibility between hydraulic oil compound additives and base oils is the core prerequisite for the "reliable operation, cost reduction, and efficiency improvement" of hydraulic systems - it's not that "the expensive is always the best," but rather "the compatible is the optimal." As users, we need to consider our own operating conditions (load, temperature, environmental requirements), base oil types (mineral, synthetic, CTL), and standard requirements (such as GB, DIN, Eaton), select targeted products from professional suppliers (such as UNP AH502A, AH502B, AH502C from UNPChemicals), and strictly adhere to the matching principles and addition specifications.
The Price of Hydraulic Oil Additives Package
The price of Hydraulic Oil Additives Package varies depending on factors such as brand, specification, composition, and sales channels. If you are interested in Hydraulic Oil Additives Package, please feel free to contact us.
Supplier of Hydraulic Oil Additives Package
UNPChemicals is a professional supplier of high-quality and effective Hydraulic Oil Additives Package. We offer several remarkable products, namely High zinc hydraulic oil additives UNP AH502A,Low Zinc Hydraulic Oil Additives UNP AH502B,Zinc-free Hydraulic Oil Additives UNP AH502C,etc.
High zinc hydraulic oil additives UNP AH502A are a type of chemical additive used in hydraulic oils that contain high levels of zinc dialkyldithiophosphate (ZDDP). ZDDP is a well-known anti-wear agent that also provides antioxidant, anti-corrosion, and anti-foam properties. The zinc in these additives plays a crucial role in forming a protective film on metal surfaces within the hydraulic system, thereby reducing wear and extending the life of the system components.
Low Zinc Hydraulic Oil Additives UNP AH502B are a class of advanced lubricant additives designed to enhance the performance of hydraulic oils with reduced zinc content.These additives are formulated to provide a balance of anti-wear,extreme pressure,and antioxidant properties,making them suitable for modern hydraulic systems that demand high performance with lower environmental impact.
Zinc-free Hydraulic Oil Additives UNP AH502C are a new class of environmentally friendly lubricant additives designed for hydraulic systems.These additives are formulated to provide the same level of performance as traditional zinc-containing additives but without the heavy metal content,reducing the environmental impact of hydraulic fluids.
Professional Lubricant Additive Manufacturer
UNPChemicals,aka Luoyang Pacific United Petrochemical Co., Ltd., focuses on the application and development of special lubricating grease additives such as MODTC, MODTP, molybdenum amide, thiadiazole metal deactivators, and phosphate esters. With nearly 30 products in seven series, including extreme pressure anti-wear additives and special grease additives, it is a global manufacturer of special lubricating grease additives and a national high-tech enterprise with great influence and leading role in the industry. If you are looking for Lubricant Additive or technical information, feel free to contact UNPChemicals.