Q.37 :-Examples of synthetic
rubber polymers are-
Buna-S Rubber, Buna-N
rubber, Neoprene, Butyl
Rubber
Polyisoprene, Buna-S
Rubber, Buna-N rubber,
Neoprene
Polyisoprene,
Polypropene, Neoprene,
Butyl Rubber
Polyisoprene
Polypropene, Teflon,
Neoprene
Polyisoprene
Polypropene, Teflon,
Polystyrene.
Answers
ypes of Synthetic Rubber
Types of Synthetic Rubber
Synthetic Rubber Types
Synthetic rubber is a man-made rubber which is produced in manufacturing plants by synthesizing it from petroleum and other minerals. Synthetic rubber is basically a polymer or an artificial polymer. It has the property of undergoing elastic stretchability or deformation under stress but can also return to its previous size without permanent deformation. This page is about different synthetic rubber types. However, before understanding the types of synthetic rubber, it is desirable to learn about the kinds of rubber available in today's world.
Rubber Types- The Types of Rubber
Rubber is a broad term used to refer to many types of different polymers, simply called the types of rubber that are all elastomers. Being elastomers mean they can be stretched out and will return to their original shape let gone. Natural rubber is the original and the first kind of rubber to be used by man- it is still used in different forms. Other than natural rubber, all the other types of rubber are synthetic or manmade. Some of the examples of such rubber types include Polychloroprene (generally sold by the trade name Neoprene); Polybutadiene; Poly(styrene-butadiene-styrene) rubber or SBS rubber; Polyisobutylene; Silicone among others. All these kinds of rubber made of synthetic polymers have been discussed in detail later in this page. However, before knowing about all these synthetic rubber varieties, get to know what is synthetic rubber and what are its chemical types.
What is Synthetic Rubber?
Rubber in its native form is basically useless. It is only when certain chemicals are added, the rubber thus produced is used to make varied rubber products. Synthetic rubber is used as a substitute for natural rubber in many cases. Depending on the chemicals added and the properties associated with it, the synthetic rubber can be as hard as a bowling ball or as resilient as a rubber band or as soft as a sponge. When improved material properties are required, synthetic rubber is considered. Approximately 70% of all rubber used today are one from many synthetic rubber varieties.
What are the Chemical Types in Synthetic Rubber?
Synthetic rubber is artificially made from petrochemical feedstocks. Crude oil is the principal raw material for different types of rubber in synthetic category. As opposed to natural rubber where there is only one chemical type, there are approximately 20 different chemical types of synthetic rubber, and within all of the types of rubber, there are different grades. The different types of rubber, especially the synthetic rubber types have their own individual properties and advantages. The industry chooses the rubber types which most clearly meet the demands of an intended use.
Types of Synthetic Rubber
As is clear from the above discussion, there are about twenty different types of chemicals used for making different synthetic rubber varities. It is obvious that there are different synthetic rubber kinds. Some of the popular synthetic rubber types include the following.
Acrylic Rubber (ACM)
Butadiene Rubber (BR)
Butyl Rubber (IIR)
Chlorosulfonated Polyethylene (CSM)/ Hypalon
Ethylene Propylene Diene Monomer (EPDM)
Fluoroelastomers (FKM)/ Viton
Isoprene Rubber (IR)
Nitrile Rubber (NBR)
Perfluoroelastomer (FFKM)
Polychloroprene (CR)/ Neoprene
Polysulfide Rubber (PSR)
Silicone Rubber (SiR)
Styrene Butadiene Rubber (SBR)
What Led to the Development of Synthetic Rubber?
During the World War II, the United States was cut off from almost all of its sources of natural rubber in the Pacific. In order to meet the country's needs for this important material, the government built synthetic rubber plants and the manufacturing industries operated them. Synthetic rubber production increased from 8,000 tons in 1941 to 820,000 tons in 1945. After the World War II, the government sold these synthetic rubber plants to the industries. After that there is no looking back. There are different types of synthetic rubber having different properties and manufacturers and suppliers are producing different range of rubber products which are used for commercial and industrial purpose. According to a research report, the global demand for industrial rubber products is estimated to rise to 4.3% annually through 2013 to $97.8 billion. For more information, check out Rubber Industry Global Overview