2 advantage of valcunized rubber over natural rubber
Answers
There is nothing called as artificial rubber. The correct technical term is synthetic rubber.
The synthetic rubber was developed during the second world war by the Germans whose supply of natural rubber was blocked by the US. In order to sustain the war, they had to find an alternative to natural rubber and finally they manufactured BUNA S which is now known as SBR or Styrene Butadiene Rubber.
As rubber plantations are predominantly found only around the tropical region such as Thailand, Indonesia, Vietnam, India etc, countries such as France, Germany and other European countries had developed synthetic rubber and have fine tuned their properties so that it can match certain properties of NR. Despite the fact that these synthetic rubber are no match for the toughness and tear properties of NR, they have some advantages such as in case of tyres, SBR is used to improve abrasion resistance and reduce rolling resistance thereby increasing fuel economy. Butyl rubber is used in tubes as it's impermeable to gases. These are some of the few advantages of the synthetic rubber.
In addition to these the price of synthetic rubber is mostly dependent on that of crude and in case of Natural rubber it's mostly based on climatic changes. So the price of the polymer determines which rubber shall be used to improve profitability.
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Synthetic rubber (SBR) has properties similar to natural rubber, but with greater resistance to abrasion, wear and water. Additional advantages over natural rubber include: Low cost alternative material to Natural Rubber.
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