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thermoset composites

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870119
EISBN: 978-1-62708-314-0
... Abstract This chapter familiarizes readers with the many and varied thermoset composite fabrication processes and the types of applications for which they were developed. It describes wet lay-up, prepreg lay-up, and low-temperature vacuum bag curing prepreg processes, which are best suited for...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780089
EISBN: 978-1-62708-281-5
... Abstract This article focuses on characterization techniques used for analyzing the physical behavior and chemical composition of thermoset resins, namely chromatography and infrared spectroscopy. The main purpose is to give sufficient detail to permit the reader understand a particular test...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870201
EISBN: 978-1-62708-314-0
... processes such as thermoset curing, thermoplastic consolidation, filament winding, pultrusion, and liquid molding. In addition, for many years, models have been successfully developed for injection and compression molding. A simplified cure model for an addition-curing thermoset composite is shown in...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780417
EISBN: 978-1-62708-281-5
... fractographic data from the other brittle thermoset resin systems are presented. In general, brittle matrix composite materials tested under interlaminar, mode I tension loads fail in the plane of the reinforcement. Visually, these surfaces exhibit a glossy appearance, with some banding and resin covering...
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.t52870285
EISBN: 978-1-62708-314-0
... single largest primary manufacturing process used for automotive composite applications today. The three main groups of materials that are compression molded are sheet molding compounds for thermosets, glass-fiber-mat-reinforced thermoplastics, and long-fiber-reinforced thermoplastics. Compression...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870573
EISBN: 978-1-62708-314-0
... conversion to a ceramic, subsequent infiltrations are performed with a liquid precursor material. Instead of a conventional thermoset resin such as epoxy, an organometallic polymer is used. The PIP process, shown schematically in Fig. 21.10 , consists of: Infiltration of the preform with the polymer...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540319
EISBN: 978-1-62708-309-6
... failure modes of impact damage in composites. (a) High-energy impact damage. (b) Medium-energy impact damage. (c) Low-energy impact damage Fig. 8.31 Through-thickness damage comparison of impact in thermoplastic (top) and thermoset (botton) laminates. Note the smooth surfaces after impact and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550569
EISBN: 978-1-62708-307-2
... Abstract Ceramic-matrix composites possess many of the desirable qualities of monolithic ceramics, but are much tougher because of the reinforcements. This chapter explains how reinforcements are used in ceramic-matrix composites and how they alter energy-dissipating mechanisms and load...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610377
EISBN: 978-1-62708-303-4
... reinforcement and the matrix affect processing. The two types of polymer matrices are thermosets and thermoplastics. A thermoset starts with 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...
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
... thermoset resins. It also includes continuous fiber-reinforced resins (composite materials) as well as the short fiber- and/or particulate-reinforced plastics commonly used for parts and components. Because composites are a subset of engineering plastics, they are addressed in much greater detail in...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290279
EISBN: 978-1-62708-306-5
... Abstract This chapter reviews materials issues encountered in joining, including challenges involved in welding of dissimilar metal combinations; joining of plastics by mechanical fastening, solvent and adhesive bonding, and welding; joining of thermoset and thermoplastic composite materials by...
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 December 2003
DOI: 10.31399/asm.tb.cfap.t69780115
EISBN: 978-1-62708-281-5
.... Additional information on the thermal analysis of thermosets is contained in Ref 101 . Although neat thermoset resins are seldom used, their properties are important because resin characteristics have a strong influence on composite thermal properties. The addition of fillers and fibers can improve the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780003
EISBN: 978-1-62708-281-5
... Abstract This introductory article describes the various aspects of chemical structure and composition that are important to an understanding of polymer properties and their eventual effect on the end-use performance of engineering plastics, namely thermoplastics and thermosets. The most...
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 December 2003
DOI: 10.31399/asm.tb.cfap.t69780267
EISBN: 978-1-62708-281-5
... – 30 ). Figure 8 compares the specific wear rate of a few formulations of thermoset composites. The relevant micrograph is given in Fig. 9 . It is seen from these results that the wear resistance of phenolic resin increases by almost 2 orders of magnitude when fillers such as carbon and aramid...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870183
EISBN: 978-1-62708-314-0
...-fusible thermoplastics consists of heating, consolidation, and cooling, as depicted schematically in Fig. 6.1 . As with thermoset composites, the main processing variables are time ( t ), temperature ( T ), and pressure ( P ). Heating can be accomplished with infrared heaters, convection ovens, heated...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870001
EISBN: 978-1-62708-314-0
... still intact but the crosslinks are no longer locked in position. Therefore, the T g determines the upper use temperature for a composite or an adhesive and is the temperature above which the material will exhibit significantly reduced mechanical properties. Since most thermoset polymers will absorb...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870373
EISBN: 978-1-62708-314-0
... composites is injection molding. While both thermosets and thermoplastic materials can be injection molded, by far the greatest number are molded using thermoplastics. Since the fibers are short and randomly oriented, the amount of strength and stiffness improvement is only nominal, as shown for the...