Natural rubber (NR) compounding

Natural rubber (NR) compounding 2017-03-10T13:55:42+00:00

Natural rubber’s properties include excellent tear and abrasion resistance and continue to make it the preferred choice for a number of applications as a primary or secondary compounding material in the recipe. Preferred has deep experience in natural rubber (NR) compounding.

Natural rubber properties

Natural polyisoprene has good resilience, abrasion and surface friction properties and excellent compression set. It has low hysteresis and rolling resistance with high fatigue resistance and remains flexible at low temperatures.

Natural rubber has poor resistance to oil, sunlight and ozone and limited thermal capability.

Natural polyisoprene applications

NR has a broad range of desirable properties and can be blended with many polymers. Natural rubber continues to be used for many applications rather than synthetic rubber, particularly for dynamic uses, because it works.

Natural rubber’s superior tear strength and excellent resistance to heat buildup continues to make it a favored ingredient for high-performance tires for racecars, trucks, buses and aircraft. Other applications include tank lining, engine mounts, seals, vibration dampening and diaphragms.

The quality of natural rubber compounds is highly dependent on good mixing methods. Preferred consistently produces high-quality natural rubber compounds in sponge, sheets, slab, strip and calendared.

Preferred’s technical and sales teams can help you determine which natural and synthetic polymers provide the performance you need.

Fully supported custom rubber compounding

Preferred Compounding is a full service custom rubber compounder. As a Preferred customer/partner, you gain access to our comprehensive support resources.

Preferred’s technical services staff includes chemists with decades of experience. They formulate and optimize custom elastomeric compounds to achieve the desired field performance, manufacturability and cost for your compounds. Through the custom compounding recipe, we can engineer the extent and rate of curing, processing characteristics, final properties, performance and cost.

Thousands of compounding ingredients

We work with thousands of ingredients and compounding polymers and more than 100 rubber mixing and processing variables. We produce compounded elastomers in strips, slabs, pellets and calendered sheet. We also provide filtering by gear-pump straining.

For more information

If you would like assistance determining the right formulation for your rubber application or on improving the performance and cost of your current recipe, please contact any Preferred Compounding sales representative or Marc Pignataro by E-mail or at 330.798.4960.