Chap_100003 - 15 from 1960 to 1974 and 8 thereafter from 1974 to 2000 and 2005 The overwhelming success of polymers is the result of their unique

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Chapter 1 Introduction of Polymer Materials 1.1 Plastic Age Since the second half of the 20th century, polymers have become the primary material of mankind. Complementing natural polymeric materials such as wood, cellulose fiber, wool, leather, or natural rubber that has been used by man from the very beginnings synthetic polymers have made continuously their way to the top. The production of polymers increases every year and will continue to do so, 7 million tons in the world in 1960 to 196 million tons in 2005 and to continue reaching over 365 million tons in 2015, 540 million tons in 2020, using a more conservative annual rate of 6.5 %. Total world production/consumption of plastics, since the beginning, at the turn of the twentieth century, kept an average annual rate of growth of 15 %, or doubling every five years, until 1975-1979, when this trend was broken at the first oil shock. This high growth rate was never achieved again, the average annual growth rate of plastics was
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Unformatted text preview: 15% from 1960 to 1974, and 8% thereafter, from 1974 to 2000, and 2005. The overwhelming success of polymers is the result of their unique combination of properties. Typically, polymers have low weight, they are stable and tough, they don't rust, they are not toxic, their production is highly economic, they are easy to process, to shape and to dye, and - last not least - polymers can be easily adapted to most requirements and uses. Most importantly, the standard polymers are incredibly inexpensive compared to their performance. Polymers have therefore not only opened an access to many new products in our daily life as well as in technology. But they have been increasingly replacing traditional materials in many applications, not only because they are cheaper, but mostly because they are just better....
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This note was uploaded on 10/16/2010 for the course MATSE 441 taught by Professor Chung,tze-chiang during the Fall '10 term at Pennsylvania State University, University Park.

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