rubber filler oil: The Key Raw Material for Improving the Performance of Rubber Products

Product Series and Characteristics

Rubber Filler Oil

• Rubber filler1 (ISO viscosity grade 4006): Made from deeply refined naphtha base oil, it has no side effects and no potential carcinogenic hazards. Its kinematic viscosity at 40°C is 52.63 mm²/S, and at 100°C, it is 7.5 mm²/S. It has a viscosity index of 104, a pour point of -33°C, and a flash point of 188°C. In the processing of ethylene-propylene rubber and ethylene-propylene-diene monomer rubber, this filler oil can be evenly dispersed in the rubber matrix, effectively improving the processing performance of the rubber. For example, it reduces the energy consumption during the mixing process and improves the fluidity of the rubber compound, making the filling and mixing more uniform. At the same time, it can also enhance the flexibility and cold resistance of rubber products, and is suitable for the production of rubber products with high requirements for flexibility, such as some seals and hoses.
• Rubber filler2 (ISO Viscosity Grade 4010): It is also a deeply refined naphtha base filler oil with excellent performance. Its kinematic viscosity at 40°C is as high as 109 mm²/S, and at 100°C, it is 12.1 mm²/S. It has a viscosity index of 100, a pour point of -27°C, and a flash point of 210°C. In rubber processing, it not only provides good filling effect, increases the volume and weight of rubber products, and reduces costs, but also significantly improves the strength and wear resistance of rubber products. When producing tires, conveyor belts, and other rubber products that need to withstand large pressure and friction, Rubber filler2 can play an important role, effectively extending the service life of the products and improving their performance in harsh working environments.

High Temperature chain oil

• High Temperature Chain Oil 1 (ISO Viscosity Grade 320): Made from deeply refined naphtha base oil, it has no adverse effects and carcinogenic risks. Its kinematic viscosity at 40°C is 306 mm²/S, and at 100°C, it is 31 mm²/S. It has a viscosity index of 139, a pour point of -33°C, and a flash point of 239°C. In the rubber processing process, this product may be suitable for lubricating the chains of equipment in high-temperature environments, such as the chains of rubber internal mixers and vulcanizing machines. Its high viscosity and good thermal stability can ensure the smooth operation of the chains under high-temperature and high-load conditions, reduce wear, and improve the operating efficiency and reliability of the equipment, indirectly affecting the production quality and stability of rubber products.
• High Temperature Chain Oil 2 (ISO Viscosity Grade 220): It has unique properties. Its kinematic viscosity at 40°C is 205 mm²/S, and at 100°C, it is 24 mm²/S. It has a viscosity index of 145, a pour point of -30°C, and a flash point of 241°C. In rubber processing, it can be used for chain drive systems with strict requirements for temperature and lubrication, providing continuous and stable lubrication protection for the chains, preventing the chains from rusting and jamming, and ensuring the normal operation of rubber production equipment. It helps to optimize the production process of rubber products and improve production efficiency and product quality.

Rubber Filler Oil Selection Guide

Selection Based on the Type of Rubber Product

• Tire Manufacturing: For tire production, the filler oil needs to improve the processing performance of the rubber while significantly enhancing the wear resistance, anti-aging performance, and grip of the tire. Rubber filler2 is an ideal choice. Its higher viscosity and excellent filling effect can increase the hardness and strength of the rubber, enabling the tire to better withstand pressure and friction during driving. At the same time, its good anti-aging performance helps to extend the service life of the tire and ensure driving safety.
• Seal Production: Seals usually require rubber to have good flexibility, sealing performance, and chemical resistance. The low viscosity and excellent dispersibility of Rubber filler1 enable it to impart good flexibility to the rubber, ensuring that the seals can maintain good sealing performance under different working conditions and effectively prevent liquid or gas leakage. At the same time, its refined characteristics also help to improve the resistance of the seals to various chemical media.
• Conveyor Belt Production: Conveyor belts need to have high strength, high wear resistance, and good flexibility to adapt to long-term and high-strength material conveying tasks. Rubber filler2 performs well in improving the strength and wear resistance of rubber, making the conveyor belt less likely to be damaged under heavy loads and frequent friction, extending its service life. Its appropriate flexibility also ensures the smoothness and adaptability of the conveyor belt during operation.

Consideration of the Performance Requirements of Rubber Products

• Requirements for Anti-aging Performance: If rubber products need to be used outdoors or in harsh environments for a long time, such as automobile tires and building sealants, filler oils with good antioxidant and ultraviolet resistance should be selected. The refined components and stable chemical structure of Rubber filler2 give it an advantage in resisting aging factors, effectively delaying the aging process of rubber products, maintaining their physical properties and appearance quality, and prolonging the service life of the products.
• Requirements for Flexibility and Elasticity: For rubber products that require high flexibility and elasticity, such as rubber hoses and elastic seals, low-viscosity filler oils such as Rubber filler1 are more suitable. It can enable the rubber molecular chains to maintain good mobility during processing and use, thus imparting excellent flexibility and elastic recovery ability to the rubber products, ensuring that the products can quickly return to their original shape under different deformation conditions and maintain good sealing and use performance.
• Enhancement of Strength and Wear Resistance: When manufacturing rubber products that need to withstand high loads and strong wear, such as industrial conveyor belts and shoe soles, the filler oil should have the ability to enhance the strength and wear resistance of the rubber. The high viscosity and special formula of Rubber filler2 can form an effective filling network in the rubber matrix, increasing the hardness and wear resistance of the rubber, making the products more durable during use and reducing the frequency of damage and replacement due to wear.

Combination with the Characteristics of the Rubber Processing Process

• Influence of Mixing Temperature and Time: Different rubber processing processes have different requirements for mixing temperature and time. If the mixing temperature is high or the time is long, filler oils with good thermal stability should be selected to prevent the filler oil from volatilizing or deteriorating during the processing process, which may affect the quality of the rubber products. High Temperature Chain Oil 1 and High Temperature Chain Oil 2 have good stability at high temperatures and can meet the process requirements of higher mixing temperatures, ensuring that the filler oil maintains good performance during the mixing process, mixes fully with the rubber, and plays its filling and modifying roles.
• Adaptation to Vulcanization Conditions: Rubber vulcanization is a key process link, and the selection of filler oil should match the vulcanization conditions. Some filler oils may affect the vulcanization speed and degree of the rubber, which in turn affects the physical properties of the products. When selecting a filler oil, it is necessary to consider its influence on the vulcanization process to ensure that the vulcanized rubber products meet the expected performance index. Our rubber filler oil products are carefully formulated and can cooperate well with rubber under different vulcanization conditions, promoting the smooth progress of the vulcanization reaction and improving the crosslinking density and comprehensive performance of the rubber products.

Rubber Filler Oil Usage and Function Principle

Usage Points

• Storage Conditions: Rubber filler oil should be stored in a dry, cool, and well-ventilated place, away from fire and heat sources, and protected from direct sunlight. The storage container should be well sealed to prevent the entry of moisture, impurities, and air, so as not to affect the quality and performance of the filler oil. Different batches and models of filler oils should be stored separately and clearly labeled to prevent confusion during use.
• Addition Ratio: During the rubber mixing process, the addition ratio of the filler oil should be precisely controlled according to the specific requirements and formulation of the rubber product. Too little addition may not achieve the expected filling and modifying effects, while too much addition may lead to excessive softening of the rubber, a decrease in physical properties, or problems such as blooming. Generally, the addition amount of the filler oil is between 10% and 40% of the total amount of rubber. The specific ratio needs to be determined through testing and optimization to ensure the best balance between the performance and cost of the rubber product.
• Mixing Process: When adding the filler oil to the rubber mixing, the correct mixing process should be followed. First, the rubber is plasticated in an internal mixer or an open mill to make it have a certain plasticity. Then, the filler oil is slowly added in a predetermined proportion, and the appropriate mixing temperature and time are maintained to ensure that the filler oil is evenly dispersed in the rubber matrix. During the mixing process, attention should be paid to controlling the roll gap, roll speed, and mixing intensity to avoid local overheating or uneven mixing. After mixing, sufficient sheeting, cooling, and storage should be carried out to further stabilize the combination of the rubber and the filler oil and prepare for the subsequent processing steps.

Function Principle

• Filling and Plasticizing Effects: Rubber filler oil mainly plays the roles of filling and plasticizing in the rubber matrix. The filler oil molecules can enter the voids between the rubber molecular chains, increasing the volume and weight of the rubber and reducing the cost of the rubber. At the same time, the presence of the filler oil molecules weakens the interaction forces between the rubber molecular chains, making the rubber molecular chains easier to slide and move, thereby improving the flexibility, plasticity, and processing performance of the rubber. For example, when manufacturing rubber hoses, the filling and plasticizing effects of the filler oil make the hoses easier to bend and shape, meeting the needs of different usage scenarios.
• Improvement of Physical Properties: The filler oil has an important impact on the physical properties of rubber products. It can adjust the hardness, tensile strength, elongation at break, and other performance indicators of the rubber. Suitable filler oil can improve the flexibility and elasticity of the rubber without reducing its strength, enabling the rubber products to withstand a certain external force and maintain good deformation recovery ability during use. For example, in tire production, the addition of filler oil enables the tire to maintain good grip during driving while effectively buffering the impact of the road surface, improving ride comfort and safety.
• Enhancement of Chemical Stability: Some rubber filler oils have a certain degree of chemical stability and can resist the erosion of external chemical substances to a certain extent, improving the chemical resistance of rubber products. In addition, the filler oil can also affect the aging performance of the rubber. Through its interaction with the rubber molecular chains, it can delay the oxidation and degradation process of the rubber, prolonging the service life of the rubber products. In the rubber seals used in the chemical industry, the chemical stability of the filler oil helps to ensure that the seals are not corroded and damaged when in contact with various chemical media, ensuring the durability of the sealing effect.

Actual Application Case

Packages 208L, 200L, 18L