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1. INTRODUCTION
Faster, stronger, lighter, safer ... these demands areconstantly being pushed upon today's researchers and manufacturers, including protective clothing - routine or specialized. High performance and high temperature resistantfibers aid enormously in allowing products to meet these challenges. Themarkets and products which are facilitated by the use of these fibers go farbeyond the scope and awareness of most people. This paper intends to provide a solid overview of the definitions, properties, products and end uses associated withsome of the most common high performance and high temperature resistant fibersused today. It is stressed that not all high performance materials are presented.
Before exploring details these materials, it is important todefine the parameters of high performance and high temperature resistantfibers. For this discussion, the latter is classified as a syntheticfiber with a continuous operating temperature ranging from 3750 F to 6000 F.
The classification of high performance is less rigid and canbe broken down into various segments. Generally speaking, fibers are said to beeither commodity or high performance. Commodityfibers are typically used in a highly competitive price environment whichtranslates into large scale high volume programs in order to compensate for the(often) low margins.
Conversely, high performance fibers are driven by specialtechnical functions that require specific physical properties unique to thesefibers. Some of the most prominent of these properties are:tensile strength, operating temperature, limiting oxygen index and chemicalresistance. Each fiber has a unique combination of the above properties which allows it to fill a niche in the high performance fiber spectrum.
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