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thermoplastic polymers

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Published: 15 May 2022
Fig. 13 Mer chemical structure of representative hydrocarbon thermoplastic polymers. (See Table 6 for glass transition temperatures.) More
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Published: 15 May 2022
Fig. 15 Mer chemical structure of representative heterochain thermoplastic polymers More
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Published: 15 May 2022
Fig. 17 Mer chemical structure of representative thermoplastic polymers for high-temperature service More
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Published: 15 May 2022
Fig. 4 Schematic stress-strain curves for a typical thermoplastic polymer tested at four temperatures and constant strain-rate; (1) low temperature and brittle behavior, (2) intermediate temperature with some ductility, (3) greater temperature (approaching glass transition temperature More
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006924
EISBN: 978-1-62708-395-9
... thermosetting resins as well as the curing process. Then, the techniques to characterize the physical properties of cured thermosets and composites are presented. Several examples of stress-strain curves are shown for thermosets and thermoplastic polymers. differential scanning calorimetry dynamic...
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Published: 15 May 2022
Fig. 14 Mer chemical structure of representative nonhydrocarbon carbon-chain thermoplastic polymers More
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006925
EISBN: 978-1-62708-395-9
... in the section “Properties of Polymers” in this article. Geometric Isomers An isomer is a compound, radical, ion, or nuclide that contains the same number of atoms of the same elements but differs in structural arrangement and properties. This structural feature occurs only in those thermoplastic polymers...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003571
EISBN: 978-1-62708-180-1
..., wear study is separated as elastomers, thermosets, glassy thermoplastics, and semicrystalline thermoplastics. The article describes the effects of environment and lubricant on the wear failures of polymers. It presents a case study on nylon as a tribological material. The article explains the wear...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006944
EISBN: 978-1-62708-395-9
... of Polymers under Stress The simple structure of a polymer consists of a random arrangement of chain molecules; such materials are referred to as amorphous polymers or glassy thermoplastics. In amorphous polymers, the chain molecules are randomly intertwined to form the material. The cohesive energy...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006850
EISBN: 978-1-62708-395-9
... Abstract This article presents the mechanisms of polymer wear and quantifies wear in terms of wear rate (rate of removal of the material). Interfacial and bulk wear are discussed as well as a discussion on the wear study of "elastomers," "thermosets," "glassy thermoplastics...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006849
EISBN: 978-1-62708-395-9
... properties of polymer. This is followed by a section describing molecular weight determination using viscosity measurements. Next, the article discusses the use of cone and plate and parallel plate geometries in melt rheology. It then reviews the processes involved in the analysis of thermoplastic resins...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006940
EISBN: 978-1-62708-395-9
... a significant influence on the S - N curves of polymers, and they should be considered when a component is made of polymers. Fiber type, orientation, distribution, and content are important parameters affecting fatigue properties in short-fiber (glass/carbon)-reinforced thermoplastic composites ( Ref 19...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006923
EISBN: 978-1-62708-395-9
... thermal analysis thermal properties thermoplastics thermosetting plastics THERMAL ANALYSIS provides a powerful tool for researchers and engineers in determining both unknown and reproducible behavioral properties of polymer molecules. During the past five decades, the thermal analysis of polymers...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006935
EISBN: 978-1-62708-395-9
... be considered are provided subsequently and precede the discussion of thermoplastic and thermosetting process effects on product function. Polymer structure and plastics properties have been discussed in detail in previous articles in this Volume. Some general property considerations are described here in terms...
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Published: 30 August 2021
Fig. 7 Examples of cage/separator structures and materials. (a) Left to right: pressed low-carbon steel, machined brass, injected thermoplastics, two separators, and central disk brass cage. (b) Plastic/polymer separators used in slewing rings. Source: Ref 1, 4 More
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006919
EISBN: 978-1-62708-395-9
... models can be implemented to replicate the measurements with the drop in the load-deflection curves. Here, a simple linear damage evolution law with respective plastic failure strains was used to show the improvement in predictions with such models. Material modeling methods for thermoplastic polymers...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003572
EISBN: 978-1-62708-180-1
... (such as phenolics, epoxy, etc.) may have low wear rates and higher strength than those with thermoplastics because a higher ratio of fiber is achievable with a thermoset matrix. Incorporation of fillers also can modify wear resistance of polymers up to the order of four. Solid lubricants mostly reduce wear...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006870
EISBN: 978-1-62708-395-9
...-twentieth century, the typical materials involved in fractography were metals, ceramics, and glass. In recent decades, efforts have grown to include thermoplastics ( Ref 2 ) and thermosets (such as rubber) with an emphasis on the similarities between thermoplastics and metals. In this article, I examine...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003541
EISBN: 978-1-62708-180-1
... themselves into an orderly structure. In general, simple polymers (with little or no side branching) crystallize very easily. Crystallization is inhibited in heavily cross-linked (thermoset) polymers and in polymers containing bulky side groups. There are three categories of polymers: thermoplastics...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006864
EISBN: 978-1-62708-395-9
... guidelines, and special processes. It also covers the functions of the extruder, webline handling, mixing and compounding operations, and process troubleshooting. Thermoforming and mold design are covered. Various other technologies for polymer processing covered in this article are blow molding, rotational...