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thermoplastic resins

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780105
EISBN: 978-1-62708-281-5
... Abstract This article addresses some established protocols in characterizing thermoplastics, whether they are homogeneous resins, alloyed or blended compositions, or highly modified thermoplastic composites. It begins with a description of various approaches used for the determination of...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870063
EISBN: 978-1-62708-314-0
... Abstract This chapter discusses the use of thermoset and thermoplastic resins in polymer matrix composites. It begins by explaining how the two classes of polymer differ and how it impacts their use as matrix materials. It then goes on to describe the characteristics of polyester, vinyl ester...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870183
EISBN: 978-1-62708-314-0
... composites THERMOPLASTIC COMPOSITE FABRICATION PROCESSES are discussed in this chapter. The three main areas covered are consolidation, thermoforming, and joining. The basics of thermoplastic composite materials were discussed in Chapter 3, “Matrix Resin Systems.” Consolidation of melt...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550325
EISBN: 978-1-62708-307-2
.... The chapter also includes a section on the uses of thermoplastic and thermosetting resins and provides information on fabrication processes and fastening and joining methods. engineering plastics joining thermal properties AN ENGINEERING PLASTIC can be defined as a synthetic polymer...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780115
EISBN: 978-1-62708-281-5
... determination of service temperature of a material. Representative examples of different types of engineering thermoplastics are discussed in terms of structure and thermal properties. The article also discusses the thermal and related properties of thermoset resin systems. engineering plastics...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780314
EISBN: 978-1-62708-281-5
...-induced fatigue failure in composites. The effect of moisture on the mechanical properties of thermoset resins and thermoplastics are also discussed. moisture-induced damage mechanical properties thermoset resins thermoplastics composites ONE ASPECT of plastics corrosion resistance is the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290279
EISBN: 978-1-62708-306-5
... additional crosslinking until the resin is fully cured. Since cure is a thermally driven event requiring chemical reactions, thermosets are characterized as having rather long processing times. In contrast, thermoplastics are not chemically crosslinked with heat and therefore do not require long cure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780267
EISBN: 978-1-62708-281-5
... providing information on the processes involved in interfacial and cohesive wear. This is followed by sections describing the wear process and applications of elastomers, thermosets, glassy thermoplastics, and semicrystalline thermoplastics. The effects of environmental and lubricant on the wear failures of...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730099
EISBN: 978-1-62708-283-9
... Abstract This chapter discusses the structural classifications, molecular configuration, degradation, properties, and uses of polymers. It describes thermoplastic and thermosetting polymers, degree of polymerization, branching, cross-linking, and copolymers. It also discusses glass transition...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550385
EISBN: 978-1-62708-307-2
... composites are shown in Fig. 8.4 . Two types of polymer matrices are shown: thermosets and thermoplastics. A thermoset starts as a low-viscosity resin that reacts and cures during processing, forming an intractable solid, while a thermoplastic is a high-viscosity resin that is processed by heating it above...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870119
EISBN: 978-1-62708-314-0
... blended with the resin to facilitate part removal. Low-shrink and low-profile additives, usually thermoplastic types, give the cured part minimum surface waviness and low shrinkage. Epoxies exhibit better temperature resistance than polyesters. They have good to excellent mechanical strength-to...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780003
EISBN: 978-1-62708-281-5
.... Any list identifying engineering thermoplastics is partly subjective, because certain thermoplastics are only marginally load bearing and others are upgraded to structural capability by reinforcing the neat (unmodified) resin with fibers. The following thermoplastic resins are briefly described...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780305
EISBN: 978-1-62708-281-5
... Abstract This article discusses the molecular mechanism, environmental criteria, and material optimization of environmental stress crazing (ESC) in glassy thermoplastics, polyethylenes, and nylons. In addition, it provides information on various tests used to determine relative susceptibility...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780204
EISBN: 978-1-62708-281-5
... 5 ). From both direct and indirect results, crazing has been shown to play an important role in the brittle fracture of glassy thermoplastics in that it raises crack propagation energy by a factor of 10 3 or 10 4 versus a non-crazing glassy resin. Although crazing was first reported more than...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870285
EISBN: 978-1-62708-314-0
.... Some of these processes are capable of producing over a million parts per year, while others are more amenable to low production rates. Some are restricted to thermoset resins, while others can accommodate both thermoset and thermoplastic resins. Although many different types of reinforcement can be...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780417
EISBN: 978-1-62708-281-5
.../5250-3) and glass/polyimide (Celion 3K/PMR-15). Carbon-fiber and thermoplastic resin composite systems are also highlighted, mainly for comparison purposes, and include carbon thermoplastic (AS4/APC-2) and (AS4/KIII). The specimens used for the fractographs depicted in this section were generally...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400169
EISBN: 978-1-62708-258-7
... phenolic resin should not be used as a mounting medium because the hot etchant will attack and swell the mount to the point where its surface will be above the polished steel surface. In this case, the metallographer may choose a thermosetting epoxy mounting material that is resistant to most acids and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540297
EISBN: 978-1-62708-309-6
... elastomers, the amount of recoverable elastic strain can be 500% or more. Discussion here centers on engineering plastics, which consist of thermoset and thermoplastic resins. Thermosetting resins are usually brittle compared to thermoplastic resins, which are tougher, more temperature sensitive, and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870201
EISBN: 978-1-62708-314-0
... H Ult = theoretical ultimate heat of reaction c r = relative crystallinity in polymer in weight percent Additional information on thermoplastic crystallinity is given in Chapter 3, “Matrix Resin Systems.” The viscosity of a fluid is a measure of its resistance to flow under shear...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780064
EISBN: 978-1-62708-281-5
... non-Newtonian manner and tend to line up in the direction of flow. Molecules in thermoplastic polymers are much longer than those in the unreacted liquid resin precursors to thermosets. The orientation effect in thermoplastics melt flow, such as occurs in injection molding, is much greater than that...