Miscellaneous Engineering Plastics

To overcome the disadvantages of nylon as an engineering material-high water absorption and poor creep strength at elevated temperatures—many newer polymers were developed. Table 3.47 lists polymers that are among the most commercially important acetal, polycarbonate, polyphenylene oxide and polysulfone. 

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Chapters 1-4 of the book deal with the mechanical, electrical and thermal properties of a wide range of unreinforced and reinforced engineering plastics. Chapter 5 discusses various miscellaneous properties such as wear, abrasion resistance, frictional hardness properties, surface properties and weathering, and chemical resistance. In addition, this chapter covers a particular property of food packaging plastics, namely their gas barrier properties. 

A very large catalogue of miscellaneous applications for engineering plastics could be assembled, extending into every piece of electrical equipment. A few generalizations are all that can be given here ... 

Miscellaneous Applications. There are many such uses, some of which will be questioned as engineering. Some of these applications include building construction, luggage, safety-helmets, seating, kitchen utensils, rope and strapping, shoe parts, rollers, furniture, and even dentures. This list can go on almost indefinitely and the plastics used, reflecting desired properties, will vary widely. 

H.M. Abu Shawish, S.M. Saadeh, A.R. Al-Dalou, N.A. Ghalwa, A.A.A. Assi, Optimization of tramadol-PVC membrane electrodes using miscellaneous plasticizers and ion-pair complexes, Materials Science and Engineering C, 31 (2), 300-306,2011. 

Engineering applications for plastics include mechanical units imder stress, low friction components, heat and chemical resistant units, electrical parts, housings, high Hght transmission applications, building construction functions, and many miscellaneous uses. 

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