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High performance plastics are plastics that meet higher requirements than standard- or engineering plastics. Therefore they are more expensive used in smaller amounts.〔 〕 ==Definition== High performance plastics are a class of plastics, which differs from standard plastics and engineering plastics primarily by their temperature stability but also by their chemical stability and mechanical properties, their production quantity and their price. There are many synonyms for the term high-performance plastics, such as: high temperature plastics, high-performance polymers, high performance thermoplastics or high-tech plastics. The name high temperature plastics is in use due to their continuous service temperature (CST), which is always higher than 150 °C by definition (although this is not their only feature, as it can be seen above). It is often spoken of polymers instead of plastics, since both terms are identical in the engineering-use. If the term high-performance thermoplastics is used, it is because both the standard and technical as well as high-performance plastics are always thermoplastics. Thermosets and elastomers are outside of this classification and form their own classes. A comparison of standard plastics, engineering plastics and high-performance plastics is illustrated by the following figure: :File:Highperformance thermoplastics en.svg However, the differentiation from less powerful plastics is variable over time: while nylon and poly(ethen terephthalate) were considered extremely powerful plastics at its launch, they are considered nowadays to be extraordinarily ordinary. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「High performance plastics」の詳細全文を読む スポンサード リンク
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