How Synthetic Rubber Is Made: A Pocket Guide

Understanding how synthetic rubber is made allows manufacturers to produce a wider range of products for use in both industrial and consumer markets. From tubing to tires, o-rings to gaskets, and sneakers to basketballs, synthetic rubber is an indispensable material used in the manufacture of countless goods and products around the globe. Knowing how synthetic rubber is made gives manufacturers control over its composition and customization to meet the requirements of applications needed for particular industries and sectors. Let’s take a closer look at how synthetic rubber is made, its advantages, and common uses.

How Synthetic Rubber Is Made

Synthetic rubber is a man-made elastomer, a material with elastic-like properties that is produced from petroleum byproducts. An elastomer is, technically, a pliable polymer, or plastic material, with viscoelasticity, meaning, its properties have both viscosity and elasticity, which gives it the ability to recover to its original form after being compressed, stretched, or deformed.

The production process of synthetic rubber follows several important steps, some of which may be altered slightly depending on the type of rubber being produced. That said, they are principally derived from a range of petrochemical monomers like styrene, butadiene, ethylene, propylene, or isoprene. Selection depends on the desired properties of the product. Monomers are molecules that can be bonded to other identical molecules and formed into a polymer. When desired monomer molecules are selected, they react together to form extended polymer chains, essentially, three-dimensional networks, with specific characteristics, that form rubbery substances.

Once this polymerization process has been completed then the material undergoes vulcanization to enhance the properties of the newly formed rubber into a more durable material. Vulcanization involves adding sulfur, an accelerator, and then applying heat, which strengthens the material, increases its elasticity, and boosts its resistance to temperature changes. The finished rubber product can then be molded into a desired shape.

Not all synthetic rubbers are derived from petrochemicals. One notable exception is silicone, which is formed by polymerization of silicon from sand or quartz. Rather than carbon-based, silicone’s backbone is composed of silicon-oxygen.

The Advantages of Synthetic Rubbers

Synthetic rubber is a material that possesses excellent mechanical and physical properties such as dimensional stability, strength, and resilience. One of its key characteristics is a low modulus of elasticity, which allows it to sustain deformation up to 1000 percent before retracting quickly and forcibly back to its original dimensions.

The material also has excellent dampening properties, can be used for electrical insulation, has impact resistance, and abrasion resistance, and can function in a broad temperature range. It has a low permeability, too, which makes it an ideal sealing material that can resist the passage of air, gasses, solvents, moisture, steam, chemicals, water, and other fluids and substances.

Synthetic rubber often exhibits superior durability and resistance to wear, tear, and environmental factors compared to natural rubber. Products made with synthetic rubber tend to have a longer lifespan, reducing maintenance costs and enhancing reliability for end-users.

Many synthetic rubber formulations offer enhanced resistance to weathering, UV radiation, and chemicals. This resistance makes synthetic rubber suitable for outdoor applications and environments where exposure to harsh conditions or corrosive substances is common. Manufacturers can tailor the properties of synthetic rubber to meet the specific needs of different applications. This level of customization allows for the creation of specialized rubber products optimized for performance in specific conditions.

Common Industrial Applications for Synthetic Rubber

Synthetic rubber is an exceptionally versatile material that serves a wide range of industrial applications. As the primary material for o-rings and gaskets, synthetic rubbers are used to create airtight and watertight seals for industrial machinery and automotive engines. They are used to seal pumps, valves, pipe fittings, and vacuum seals in a variety of components in the oil and gas industry, in public waterwork facilities, as well as wastewater treatment plants. The aerospace industry looks to synthetic rubbers for gaskets, seals, and components that need to withstand harsh environmental conditions.

As a durable, weather-resistant construction material, synthetic rubber is used in roofing materials, sealants, and adhesives. The medical industry looks to the hypoallergenic properties that synthetic rubbers hold for manufacturing medical products like gloves, tubing, seals, and other equipment, components, and devices. Not only in medical tubing applications synthetic rubbers are also utilized in the production of flexible hoses and tubing in various industries for conveying liquids and gases. Synthetic rubbers also are used in electrical insulation materials and components for electronic devices.

The automotive industry and vehicle manufacturers of all kinds turn to synthetic rubbers not just for the manufacture of gaskets and seals, but it serve as the primary material for manufacturing tires and various automotive parts like belts, hoses, engine mounts, wiper blades, rubber bumpers, grommets and more. Whether for conveyor belts on assembly lines or vibration dampening of rollers and bearings in a production plant, synthetic rubbers are used for the transmission of materials in factories.

Contact the Experts at Manufacturer’s Rubber & Supply

If your company is in the market for synthetic rubber or if you have questions concerning synthetic rubber, contact our team at Manufacturer’s Rubber & Supply today. We are your trusted source and leader in any rubber product needs. We offer years of expertise and extensive resource support to ensure all needs are met to your satisfaction.

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