Rubber Chemical & Products
Silicone Rubber
Silicone Rubber
Silicone rubber is a versatile synthetic elastomer known for its exceptional heat resistance, flexibility, and toughness. Atoms of silicon, oxygen, carbon, and hydrogen dominate its chemical make-up. The main structural component is a silicon-oxygen (Si-O) backbone, to which silicon atoms are linked by organic groups like methyl (-CH3) or vinyl (-CH=CH2). Silicone rubber's distinctive features are due to its unusual molecular structure.
Due to its exceptional qualities, silicone rubber is widely used in a variety of industries. Its exceptional ability to withstand temperatures as high as -60°C to 230°C (-76°F to 446°F) makes it essential for applications needing resilience to both cold and heat. With moisture resistance, UV rays, ozone, and chemicals, silicone rubber ensures endurance in harsh environments.
Silicone rubber has a wide range of potential uses in the construction, automotive, aerospace, electronics, medical, and food processing sectors. It serves as a sealer, gasket, insulator, and material for kitchenware, medical devices, and other applications. It contributes to engine hoses and gaskets in the automotive industry, and it's utilized in medical tubing and prosthesis in the healthcare industry.
Following are different varieties of Silicone available with us:
| General Purpose Silicone | Transparent Silicone | Flame Resistant Silicone |
| Oil Bleeding Silicone | Medical Grade Silicone | Oil Resistant Silicone |
| Liquid Silicone Rubber-LSR | Extrusion Grade Silicone | Insulator Grade Silicone |
Polyacrylic Rubber
Polyacrylic Rubber
Polyacrylic Rubber, also called ACM rubbers / Polyacrylic elastomers, are synthetic elastomers composed of acrylic monomers. These polymers are usually prepared by emulsion or suspension polymerization.
Polyacrylic Rubber has excellent resistance to petroleum fuel and oil and is also a good heat and ozone resistance. ACM is a good flex cracking resistor.
Typical applications include automotive transmission components like seals and hoses that have to be resistant to hot oil, fuel and many other common automotive lubricants and hydraulic fluids. ACM elastomer have also found use in vibration damping due to its excellent resilience. Other applications include textiles, adhesives, and coatings.
FKM
Fluoroelastomer
FKM, a fluoroelastomer, is well renowned for its outstanding chemical resistance, especially when exposed to acids, oils, and high temperatures. Hexafluoropropylene and vinylidene fluoride are the main ingredients.
FKM specializes in chemical resistance and extreme temperatures.
FKM is primarily used in the automobile, aerospace, and chemical industries ranging in the products like seal and gasket in harsh environments such fuel systems, engines, and chemical processing machinery.
FFKM
FFKM
FFKM is Perfluoroelastomer compounds containing an higher amount of fluorine than FKM fluoroelastomers. Certain grades of FFKM have a maximum continuous service temperature of 327 °C (621 °F).
They have improved resistance to high temperatures and chemicals and even withstand environments where Oxygen-Plasma are present for many hours.
FFKMs are commonly used to make O-rings and gaskets that are used in applications that involve contact with hydrocarbons or highly corrosive fluids, or when a wide range of temperatures is encountered.
Hydrogenated Nitrile Butadiene Rubber
Hydrogenated Nitrile Butadiene Rubber (HNBR)
HNBR (Hydrogenated Nitrile Butadiene Rubber) is produced by selective hydrogenation of the butadiene groups, and results in a material which has improved mechanical properties and a higher temperature capability. As with NBR, the ACN content within the specific compound will determine temperature and fluid resistance.
It has outstanding resistance to chemicals, oil, and gasoline. HNBR is perfect for industrial applications needing oil and heat resistance.
HNBR is used in manufacturing of automobile seals, gaskets, and hoses because to its superior temperature resistance.
Nitrile Rubber (NBR)
Nitrile Rubber (NBR)
Composition in Chemicals Copolymers of butadiene and acrylonitrile make up the majority of NBR. Different grades of NBR with different qualities can be produced depending on the ratio of both of these elements.
A higher butadiene proportion improves flexibility while a higher acrylonitrile content increases resistance to oil and gasoline.
NBR is a popular material for gaskets, seals, O-rings, hoses, and automotive parts because of its exceptional resistance to oils, fuels, and chemicals. Its exceptional sealing properties make it valuable in various industries, including automotive, aerospace, and oil and gas.
Reclaimed Rubber (RR)
Reclaimed Rubber
Reclaimed rubber, an affordable replacement for virgin rubber, is a renewable and environmentally friendly material made from recycled rubber goods. Based on the size of the grain, it is divided into four primary categories: fine grain, Super fine grain, medium grain, and coarse grain, each with special characteristics and uses.
Fine Grain Reclaimed Rubber: This kind of reclaimed rubber has a small particle size and is noted for having excellent tensile strength, making it ideal for uses including conveyor belts, shoe components, and tyre inner linings.
Super Fine Reclaimed Rubber: Super Fine Reclaimed Rubber has even finer particles and is prized for its exceptional flexibility and persistence. It is frequently utilized in premium rubber goods like gaskets, seals, and automotive parts.
Medium Grain Reclaimed Rubber: This type balances performance and grain size, making it adaptable for a range of uses such rubber matting, flooring, and molded goods.
Coarse Grain reused Rubber: With its bigger particle sizes, coarse grain reused rubber is generally used to make rubber sheets, hoses, and industrial vibration dampeners, all of which require a high degree of durability and affordability.
Reclaimed rubber still has the fundamental rubber polymer structure chemically, but it may also contain additives like vulcanizing agents and accelerators. Depending on the raw materials used and the processing techniques used, its composition varies.Reclaimed rubber is advantageous for a variety of industries, including the automotive, building, manufacturing, and more because it is affordable and sustainable.
Synthetic Rubber: SBR 1502
Styrene Butadiene Rubber
The synthetic rubber SBR 1502, also known as Styrene Butadiene Rubber 1502, is primarily comprised of the monomers styrene and butadiene. It is made of these two monomers as a copolymer, and the arrangement of its styrene and butadiene units is arbitrary. SBR 1502 generally comprises 77% butadiene and 23% styrene.
SBR 1502 is frequently combined with other synthetic rubbers or natural rubber in the tyre industry to boost traction, reduce rolling resistance, and enhance tyre performance. It is a valuable component in many rubber products because it can withstand wear and tear in difficult circumstances, assuring durability and longevity.SBR 1502 rubber is an universal material that offers a well-balanced combination of qualities, making it a crucial component in a variety of goods that demand robustness and endurance.
Excellent abrasion resistance, good tensile strength, and flexibility make this rubber compound a popular option for a variety of applications. Tyres, conveyor belts, gaskets, seals, footwear, and several industrial products are frequently made with SBR 1502. Both consumer and industrial uses like it because of its adaptability and affordability.
Synthetic Rubber: SBR 1712
Styrene Butadiene Rubber
SBR 1712, commonly referred to as Styrene Butadiene Rubber 1712. SBR 1712 has a butadiene concentration of 72-77% and a styrene content of 23-28%, and as a result, it has high abrasion resistance, tear strength, and weathering resistance. Because of this, it is an excellent choice for many commercial and industrial applications.
SBR 1712 is a synthetic rubber material noted for its adaptable qualities and broad uses. Styrene and butadiene copolymers make up the majority of its chemical makeup, which provides a balance between cost-effectiveness, flexibility, and durability.
Rubber SBR 1712 is widely used in the production of tyres because it improves the performance of the tread compound, increasing grip and tread life. Due to its price and resilience, it is also commonly found in conveyor belts, shoes, gaskets, and automotive components.Due to its adhesive qualities and chemical stability, SBR 1712 is also an essential ingredient in the production of adhesives, coatings, and sealants.As a result of its unique chemical composition, SBR 1712 rubber provides an affordable alternative for a variety of industries, primarily tyre manufacturing, and also helps to produce a variety of other rubber-based products.
Polybutadiene Rubber(PBR)
Polybutadiene Rubber
Polybutadiene Rubber (PBR) is a synthetic rubber. Polybutadiene rubber is a polymer formed from the polymerization of the monomer 1,3-butadiene. Polybutadiene rubber accounted for about a quarter of total global consumption of synthetic rubbers.
Polybutadiene Rubber has a high resistance to wear and is used especially in the manufacture of tyres, which consumes about 70% of the production. Another 25% is used as an additive to improve the toughness, that is impact resistance.
Polybutadiene Rubber is used to manufacture golf balls, various elastic objects and to coat or encapsulate electronic assemblies, offering high electrical resistivity.
Butyl Rubber
Butyl Rubber
Butyl rubber, sometimes just called "butyl", is a synthetic rubber, a copolymer of isobutylene with isoprene. Butyl rubber is produced by polymerization of about 98% of isobutylene with about 2% of isoprene.
Butyl Rubber has good flex properties, resulting from low levels of unsaturation between long poly isobutylene segments. It also has a high level of heat resistance and excellent low-temperature flexibility. It has good shock absorption characteristics and low moisture and gas permeability and is used in many commercial applications.
Butyl Rubber is used in the manufacture of tyre inner liners, automotive tubes, ball bladders, adhesives, sealants, vibration mounts, electrical fluids and lubricants among others.
Natural Rubber and Types
Natural Rubber and Types
Natural Rubber is an elastic substance obtained from the latex sap of trees, especially those trees which belong to the genera Hevea and Ficus. Technically speaking, natural rubber is an elastomer or an elastic hydrocarbon polymer. Natural rubber is one of the types of rubber that also include vulcanized rubber which is finished into a variety of rubber products.
The types of Natural Rubbers are
RSS - Ribbed Smoked Sheet and ISNR - Indian Standard Natural Rubber.
RSS-1X - Because of the high purity level indicated by the 'X' in RSS-1X. It is one of the fine grades of rubber,is used to make goods for the engineering, pharmaceutical, and medical industries. Rubber made from RSS-1X is a top choice for tyre manufacture because of its outstanding flexibility and resilience. RSS-1X rubber is also used in numerous consumer and industrial items, such as conveyor belts, shoes, seals, gaskets, and automobile parts.
RSS-4 - type rubber has great tensile strength, abrasion resistance, and flexibility.Its capacity to retain elasticity across a wide temperature range offers stable grip and longevity on highways. It is the perfect material used for manufacturing high-performance cars, motorbikes, and aircraft tyre. RSS-4 rubber is also used in a variety of industrial items such conveyor belts, hoses, gaskets, and seals where its tensile strength and chemical stability are highly regarded. Additionally, it is used to make gloves for use in medicine, sporting goods, and footwear.
RSS-5 - rubber is a premium grade of natural rubber with remarkable qualities, making it the perfect option for applications requiring high standards of quality, resilience, and a long life. It is used in the manufacture of tyres, gaskets, seals, numerous vehicle components, conveyor belts, shock-absorbing mounts, and other parts for machinery and equipment that must resist wear and tear, Medical Gloves, Medical Tubing, Medical seals, shoes bottoms, grips, and balls.
ISNR 10 , 20 - Indian Standard Natural Rubber. A kind of natural rubber derived from latex collected from rubber trees is called ISNR 20, often referred to as Standard Malaysian Rubber. Manufacturing of tyres, conveyor belts, footwear, and other rubber goods are common applications where toughness and flexibility are required. ISNR 10, 20 is an important material in the manufacturing sector due to its consistent characteristics and broad availability.
Neoprene Rubber (CR)
Neoprene Rubber
Chloroprene monomers are the starting point for the chemical composition of neoprene rubber. It often contains chemicals to improve its resistance to ozone, heat, and weathering.
Neoprene rubber is used because of its exceptional weather resistance, flexibility, and endurance. It is frequently employed in situations when protection from UV rays, extremely high temperatures, and exposure to the elements outdoors is necessary.
Wetsuits, electrical insulation, car hoses, and a wide range of sporting products all frequently contain neoprene.
EPDM
Ethylene Propylene Diene Monomer
Ethylene, propylene, and a diene monomer make up the majority of the ingredients of EPDM, a synthetic rubber.
It is perfect for outdoor applications because of its chemical structure, that provides it with good resistance to heat, weathering, and ozone exposure.
EPDM is frequently used in gaskets, hoses, automobile seals, and roofing membranes.
Rubber Chemicals: Accelerators
Accelerators
Chemicals known as rubber accelerators are essential for accelerating the vulcanization process in the rubber industry. By cross-linking polymer chains, vulcanization is a chemical process that turns natural or synthetic rubber into a more robust and elastic substance.
These accelerators are essential for enhancing the mechanical qualities of rubber, including its strength, flexibility, and heat resistance.
In the process of production of rubber, accelerators are divided into primary, secondary, and ultra-accelerators, each with a specific function. Secondary accelerators give extended curing, providing precise control over rubber qualities, while primary accelerators start the vulcanization process. Ultra-accelerators accelerate curing even more, which is crucial for rapid manufacturing lines.
Rubber Chemicals: Antioxidants
Antioxidants
Antioxidants are vital chemical compounds that are critical to maintaining the effectiveness and longevity of rubber goods. To counteract the negative effects of oxidation, which can cause the breakdown of rubber materials over time, these sorts of chemicals are added to rubber formulations.
Antioxidants work by suppressing the oxidative breakdown of rubber, which stops cracks, brittleness, and color changes from occurring. They are especially important in applications that must withstand adverse weather conditions, like car tyres, industrial belts, seals, and a variety of rubber-based items.
Antioxidants are frequently used in the automobile sector to increase tyre performance and longevity, ensuring tyre safety and fuel economy. They are used in conveyor belts and mechanical components in industrial environments. Antioxidants are used in the manufacture of rubber boots, gloves, and several other rubber products. Antioxidants, in general, are essential additions in the rubber industry since they help to preserve the durability and quality of rubber products in a number of applications.
Rubber Chemicals: Retarders
Retarders
In order to delay the vulcanization or curing of rubber compounds, rubber retarders are crucial chemicals employed in the rubber business. They play a significant function in regulating rubber production's timing and improving product quality. Retarders improve the mixing, molding, and shape of rubber materials by lengthening the cure period.
The use of retarders is particularly beneficial in high-precision applications where exact control of curing durations is necessary to achieve the requisite mechanical qualities, such as elasticity, strength, and durability.
Retarders are used in a variety of rubber goods. They give manufacturers the ability to tailor the curing procedure to match particular performance specifications, assuring uniformity and consistency in the finished goods.
Rubber Chemicals: Insoluble sulfur
Insoluble sulfur
As a vulcanizing agent, insoluble sulfur plays an important part in the rubber industry. Insoluble sulfur, compared to regular sulfur, is stable at high temperatures and prevents rubber manufacturing from vulcanizing too early.
Insoluble sulfur is vulcanized through a chemical process involving dispersion inside the rubber matrix. Sulfur molecules create crosslinks by building bridges between adjacent polymer chains during the vulcanization process. These crosslinks enhance the rubber's mechanical attributes, including elasticity, toughness, and abrasion resistance. The insolubility of insoluble sulfur in rubber also guarantees a more even distribution, resulting in excellent and durable rubber goods.
This unique characteristic improves the elasticity, strength, and durability of rubber products, making them suitable for a range of uses, such as industrial products, car tyres, and footwear.
Rubber Chemicals: Sulfur
Sulfur
The rubber industry heavily relies on common sulfur, often known as elemental sulfur (S8). It is a crucial part of the vulcanization process, which uses sulfur to improve the mechanical qualities of natural or synthetic rubber. By cross-linking polymer chains, vulcanization increases the rubber's strength, elasticity, heat resistance, and wear resistance.
This transformation's chemical mechanism entails the building of "cross-links" or bridges between the chains of rubber polymer. Sulfur bridges (-S-S-), which join adjacent polymer chains, are produced when sulfur atoms react with the rubber's carbon double bonds.
The rubber's structure is strengthened by the cross-linking, which also enhances the rubber's performance qualities including flexibility and abrasion resistance.
Fillers: Carbon Black
Carbon Black
In the rubber sector, carbon black is a vital addition that improves the functionality and durability of rubber goods. It is created when hydrocarbons burn partially, producing finely fragmented carbon particles. The pyrolysis of feedstock hydrocarbons at high temperatures, which results in the formation of tiny, spherical carbon particles, is the chemical mechanism.
Following their incorporation into rubber compounds, these particles enhance and reinforce the material, increasing its tensile strength, wear resistance, and UV radiation resistance.
The outstanding characteristics of carbon black make it essential in the manufacture of tyres, belts, hoses, and several other rubber-based products, ensuring their durability and dependability.
Fillers: Precipitated Silica
Precipitated Silica
Precipitated silica is an essential part in the rubber industry, serving as a reinforcing filler to improve the efficiency of rubber compounds.
The elasticity, tear resistance, and abrasion resistance of rubber are all enhanced by this finely divided, synthetic type of silicon dioxide. The unique surface characteristics of precipitated silica serve as the chemical mechanism for this improvement.
Precipitated silica uses polar interactions and hydrogen bonds to generate powerful intermolecular connections when combined with rubber. As a result, the rubber matrix becomes stronger, decreasing chain slippage and improving overall durability. Precipitated silica's high surface area also improves its bonding with polymer chains, increasing cross-linking and creating a tighter network structure inside the rubber.
Fillers: Calcium Carbonate
Calcium Carbonate
The rubber industry utilizes calcium carbonate, a versatile chemical, extensively. Its major function in rubber compositions is as a filler or strengthening ingredient. Calcium carbonate enhances a number of performance characteristics of rubber products when mixed with rubber compounds.
Calcium Carbonate increases tensile strength, abrasion resistance, and dimensional stability, enhancing the durability and lifespan of rubber products.Additionally, calcium carbonate has the ability to operate as an acid scavenger, neutralizing acidic substances in rubber compounds and extending the life span of the final product.
The potent interaction between calcium carbonate particles and the rubber matrix is the chemical mechanism underlying this improvement. As a nucleating agent, calcium carbonate encourages the development of a well-distributed, organized network within the rubber. Increased mechanical strength and decreased shrinkage during curing result from this.
Processing Aids: Paraffin Oil
Paraffin Oil
Paraffin Oil, often referred to as mineral oil or white oil, is crucial to many industries, including the tyre manufacturing. Its importance stems from its diverse properties and applications.
In the process of compounding rubber for tyres, paraffin oil plays a crucial role. The performance and lifetime of the finished product are ensured by improving the flexibility, resilience, and resilience of rubber compounds. As a plasticiser, paraffin oil softens the rubber and increases its process-ability during mixing and shaping.
Liquid paraffin oil is extensively used in the manufacture of inner butyl tubes, butyl reclaim, EPDM based rubber products such as weather stripes (profiles), hose pipes, and also automotive components.
Processing Aids: Aromatic Oil
Aromatic Oil
The tyre industry relies heavily on aromatic oils, often known as aromatic hydrocarbons. These oils are made up of aromatic substances that have unique chemical structures, usually based on benzene rings. A stable and extremely resilient molecular framework is produced by the alternating single and double carbon-carbon bonds that make up the chemical structure of aromatic oils.
A stable and extremely resilient molecular framework is produced by the alternating single and double carbon-carbon bonds that make up the chemical structure of aromatic oils.
To create high-quality, durable tyres that can survive challenging conditions and improve traction, grip, and all-around road safety, aromatic oils are used in the tyre manufacturing process making them suitable for various applications, from passenger vehicles to heavy-duty industrial equipment, contributing to improved road safety and performance.
Dioctyl Phthalate (DOP)
Dioctyl Phthalate
Dioctyl phthalate is often used as a general purpose plasticizer. It is highly cost effective and also widely available.
DOP has a broad range of characteristics such as high plasticizing efficiency, low volatility, UV-resistance, water-extracting proof, cold-resisting property, softness and electric property makes it suitable for making a wide range of products.
Dioctyl phthalate is used in the production of synthetic rubber, as a softening agent to make the synthetic rubber easier to rebound and harder to undergo form change under pressure.
Diethylene Glycol (DEG)
Diethylene Glycol
Diethylene Glycol is a by-product in the manufacture of Monoethylene glycol produced by EO hydrolysis. DEG is useful in formulations where fine control of fluidity is required since it works well as a viscosity modifier
.DEG's hygroscopic properties make it a great option for moisture management because they stop items from drying out or getting overly sticky.DEG functions as a solvent by diluting and dispersing a variety of substances, such as resins, dyes, and pigments, to enhance their handling properties.DEG is a component of antifreeze compositions that helps to keep the liquid fluid even at very low temperatures.It can be added to polymers and resins as a plasticizer to improve their flexibility and workability.
For colored rubber products such as hawai chappals, DEG is used as an additive along with silica filler compounds to prevent the absorption of other ingredients such as the accelerator used in the rubber compounds.
Resin & Tackfiers
Resin & Tackfiers
Resins and tackifiers serve critical roles in a variety of industries, particularly adhesives, coatings, and composites. Resins are manufactured or natural chemicals that give these materials structural integrity and adherence.
They act as a matrix, connecting various components and giving desired attributes such as strength, flexibility, and durability. Tackifiers, on the other hand, improve the stickiness or tack of adhesives and sealants. They improve the initial binding strength and total adhesive performance.
Tackifiers are frequently added to adhesives to ensure that they cling to a variety of surfaces rapidly and securely. Resins and tackifiers work together to create a wide range of goods that we use every day, from sticky notes to aircraft composites.
Processing Aids: Wood Resin
Wood Resin
Natural wood resin, which is obtained from trees, has several industrial and commercial uses. It is divided into the N, W, and WW primary grades.
N Grade: N-grade wood resin, commonly referred to as Natural resin, has undergone very little processing and is impure. It is mostly employed in conventional processes like making incense and working with wood when contaminants have little impact on the end result.
W Grade: To get rid of some impurities, W-grade resin, also known as wood grade resin, goes through a partial purification procedure. This grade offers a compromise between cost-effectiveness and purity, making it appropriate for uses like varnishes and adhesives.
WW Grade: After thorough purification, WW-grade resin, also known as Water White grade resin, is obtained making it the purest type of resin. It is perfect for high-end applications where contaminants can't be tolerated, like medications, food additives, and premium varnishes.
Wax: Paraffin Wax
Paraffin Wax
A white, colourless, and odourless substance made from petroleum is called paraffin wax.
Because of its exceptional ability to retain heat, paraffin wax is a perfect substance for sealing and insulating.
Blends of Paraffin and Microcrystalline waxes are used in rubber compounds to prevent cracking of the rubber; the admixture of wax migrates to the surface of the product and forms a protective layer. The layer can also act as a release agent, helping the product separate from its mould.
Wax: Microcrystalline (MC) Wax
Microcrystalline Wax
Microcrystalline Wax, which is typically made from crude oil after the paraffin has been removed, is a darker, more malleable wax.
Because Microcrystalline Wax has a lower melting point and a more flexible structure, it is a perfect substance for preservative
Blends of Microcrystalline and Paraffin waxes are used in rubber compounds to prevent cracking of the rubber; the admixture of wax migrates to the surface of the product and forms a protective layer. The layer can also act as a release agent, helping the product separate from its mould.
Blends: Nitrile Butadiene Rubber & PolyVinyl Chloride Blend(NBR -PVC BLENDS)
Nitrile Butadiene Rubber & PolyVinyl Chloride Blend
Nitrile butadiene rubber and polyvinyl chloride blends, also known as NBR-PVC blends, are composite materials that combine the characteristics of two different polymers, NBR and PVC. PVC has good chemical resistance and durability, whereas NBR is well known for its superior oil and fuel resistance.When combined, these components display a special balance of qualities.
These blends are a flexible option for a range of industrial and automotive applications because they provide improved mechanical strength, flexibility, and resistance to abrasion. NBR-PVC blends are a desirable option for a variety of technical applications because the precise mix ratios may be altered to customize the material's qualities to specific requirements.
NBR-PVC mixes are frequently used in products including gaskets, hoses, seals, and automotive parts where resistance to a variety of chemicals, lubricants, and fuels is necessary.
Zinc Oxide
Zinc Oxide
Zinc oxide (ZnO) is a compound widely used in the rubber industry due to the excellent properties, it acts as an activator for the vulcanization of rubber. Natural rubber is converted into a more durable material through a chemical process called vulcanization.
The high use of zinc oxide in the rubber industry is due to so many optical, physical, and chemical properties it has. zinc oxide adds strength to rubber compounds and improves their resistance against heat/abrasion and helps guard against ultraviolet degradation.
Tyres, require high loading of zinc oxide for durability and high heat conductivity. It is critical since heat building in tyres at high speed plays a big role to keep the vehicle’s safety.
Stearic Acid
Stearic Acid
Stearic Acid (Rubber Grade) is a mixture of fatty acids composed primarily of octadecanoic (stearic),
and hexadecanoic (palmitic 50%) acids to a controlled titer (molecular composition) and acid value
(presence of unsaturation). It is a light-colored, waxy solid with a characteristic fatty odor.
Stearic acid plays an important role in rubber synthesis and processing.Stearic acid is used as a softener to reduce the sticking to the roller during mixing. And it also contributes to the dispersion of carbon black and improves wear resistance.
Stearic acid is used as a dispersing agent and accelerator activator in rubber compounds. It aids dispersion of pigments and fillers and improves processing since it acts as a stock lubricant and can facilitate mold flow, improve extrusions and aid release
Clay
Clay
Kaolin clay is a low cost substitute for precipitated silica and carbon-black in certain compounds without sacrificing physical properties
Kaolin Clay is an ideal additive to rubber due to its anisometric ‘booklet’ particle structure which adds strength and stiffness to the product through enhanced stress transfer.
The hydrous Kaolin is used as reinforcing filler in rubber formulation, the inclusion of kaolin will improves the ease of extrusion, the tear strength, tensile strength, resistance to abrasion, the durability and rigidity of rubber. Regular grade Kaolin is used in footwear, conveyor belts, and rubber sealants and molds while high end kaolin is used in tyre compounds.
Magnesium Oxide
Magnesium Oxide
Magnesium oxide (MgO), or magnesia, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of magnesium.
Light magnesium oxide is used in rubber manufacture to increase scorch safety, improve stock handling and stability, and reduce scrap.
Magnesium Oxide is used in the Rubber applications as an acid scavenger, scorch retarder or curing agent during the cross linking of several rubber compounds containing halogens or nitrile groups.