Engineering Resins and High-Performance Polymers

In industrial practice, polymer categories may be based on a variety of considerations. Producers of polymers may well use a compositional basis like the one used in the various sections here and in Chapter 16. Raw materials and techniques for many products may be common to one such group. However, users of polymers often create categories by performance properties such as those summarized in Section 11.1. Within a major industry, polymers compete on a price and performance basis. As an example, in the 

Source aagett, D. C. Engineering Plastics, in H. R Mark, and J. I. Kroschwitz, Encyclopedia of Polymer Science and Engineering, vol. 6, Wiley, New York, 94, 1986. Copyright Wiley-VCH Verlag GmbH Co. KGaA. Reproduced with permission. 

FIGURE 17.5 Chemical formulas for engineering thermoplastics (see Table 17.9). 

FIGURE 17.6 Flexural modulus of selected molding resins (unreinforced). (Data from 

Because of the high temperatures needed to process many of these resins, the screws and barrels of extruders, and injection-molding machines have to be coated with 

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