Rubber Compounding Ingredients

Not only can we improve an elastomer s physical strengths by compounding other ingredients into the mixture of elastomer and sulfur but also we can improve other characteristics and even create some that do not naturally occur.

Rubber compounding ingredients. Operating recommendations for mechanical rubber goods nov 9 2016 blog. The list of ingredients in phr parts per hundred rubber called rubber compound recipe. Starting point rubber compounding formulations. The most common compounding ingredients added into the rubber are vulcanizing agents vulcanization accelerators activators for the accelerators fillers processing aids softeners antidegradants and other miscellaneous ingredients for specific purposes.

Activators accelerators ingredients and fillers inorganic compounds mainly metal oxides zinc oxide hydrated lime organic acids normally in combination with metal oxides stearic oleic stearic oleic alkaline substances will increase ph of rubber usually increases cure. Depending on the. The list of ingredients in phr parts per hundred. Some accelerators are curing agents at the same time sulfur donors.

The objectives of rubber compounding may be essentially defined as providing optimised performance and processability generally at minimum cost by the incorporation of non rubber ingredients. Optimised performance in this context refers not only to mechanical properties but also for example resistance to bacteria or particular chemicals. It is expected that modifications may be necessary to produce satisfactory commercial products. These are starting point rubber compounding formulations for providing guide lines only and should be confirmed by laboratory trials.

Hence antioxidants are added to protect the rubber against oxygen attack while antiozonants are added to protect the rubber against ozone attack. Rubber compounding ingredients ingredients in rubber compound.