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semicrystalline thermoplastics

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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
.... In this classification, 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...
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
.... 13 ). It is important to note that PP is a semicrystalline polymer that usually deforms by yielding and recrystallizing under monotonic loading. The transformation at the crack tip may appear as a yielded zone, as in thin PC sheet material ( Fig. 14 ). A pair of shear bands are also reported...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003525
EISBN: 978-1-62708-180-1
... Differential scanning calorimetry used to detect glass transitions within amorphous thermoplastic resins. The (I) indicates that the numerical temperature was determined as the inflection point on the curve. Fig. 8 Thermogravimetric analysis thermogram showing the weight-loss profile for a typical...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003550
EISBN: 978-1-62708-180-1
... and polymeric materials are tabulated in many references ( Ref 2 , 3 ). When linear or branched thermoplastic polymers are exposed to large enough quantities of solvents having solubility parameters within approximately ┬▒2 H of that of the polymer, dissolution of the polymer will occur. In smaller quantities...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... as the transition temperature between the glassy, or brittle, and relatively flexible phases of a polymer. This temperature, in turn, depends on the average molecular weight of a thermoplastic polymer or the degree of crosslinking for a thermoset polymer. Polymers used above their T g can readily creep under...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
... Crystalline domains with rigid chains between them and cross-linking chains High-strength and temperature-resistant materials E Rigid-chain domains in a flexible-chain matrix Styrene-butadiene-styrene, triblock polymer Thermoplastic elastomer (a) See Fig. 23 . (b) PE, polyethylene; PP...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003522
EISBN: 978-1-62708-180-1
...; the particular state, whether amorphous, semicrystalline, or crystalline; and the nature of any network structure. These elements, by means of which all polymers can be classified, are illustrated in Fig. 23 and described with examples in Table 1 . Thermoplastics should, in theory, have no cross linking...