1-20 of 77 Search Results for

thermosetting polymers

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
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 November 2012
DOI: 10.31399/asm.tb.ffub.t53610327
EISBN: 978-1-62708-303-4
..., the strong covalent bonds occur within the polymer molecules, but not between them. Only weaker, secondary bonds occur between polymer molecules. Thus, unless the polymer is the type that is bonded together in three dimensions (as in a thermoset), it may be relatively easy to disrupt its structure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780276
EISBN: 978-1-62708-281-5
..., and the quality of bonding with the matrix), and the operating conditions. Fibers are far more wear resistant than the matrix and hence control the wear of the composite. Continuous fiber-reinforced composites with a thermoset-polymer matrix (such as phenolics, epoxy, etc.) may have low wear rates and higher...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780089
EISBN: 978-1-62708-281-5
... to improve since the first inception of this control concept through an Air Force contract ( Ref 1 ). Numerous procedures and methods of physical, chemical, and thermal analysis for thermosetting polymer systems have evolved from this work and subsequent efforts. Most important among...
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.t52870201
EISBN: 978-1-62708-314-0
... = ( K 1 + K 2 α ) ( 1 − α ) ( B − α )  for  α ≤ 0.3 (Eq 7.6) d α d t = K 3 ( 1 − α )  for  α > 0.3 where K 1 , K 2 , K 3 , and B are determined by segmental curve fitting. When a thermoset polymer cures, the chemical...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550385
EISBN: 978-1-62708-307-2
... 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 its melting temperature. Because...
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...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290035
EISBN: 978-1-62708-319-5
.... Candle wax is a prime example. In contrast, a thermosetting polymer, such as epoxy, undergoes irreversible cross linking. After the first heating cycle, the polymer backbone chains bond to each other, making the structure rigid. When this occurs, it is not possible to revert to liquid on reheating...
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: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.9781627083195
EISBN: 978-1-62708-319-5
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780115
EISBN: 978-1-62708-281-5
... by Thermal Analysis ,” Perkin Elmer Corporation 57. Maas T.A.M.M. , Optimization of Processing Conditions for Thermosetting Polymers by Determination of the Degree of Curing with a Differential Scanning Calorimeter , Polym. Eng. Sci. , Vol 18 ( No. 1 ), 1978 , p 29 – 32 10.1002/pen...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870401
EISBN: 978-1-62708-314-0
... and other thermoset polymers, such as polyesters, can be improved by using flame retardants such as aluminum oxide trihydrate, halogenated compounds in combination with antimony oxide, and phosphorus and phosphorus-halogen compounds. Thermoplastics soften when heated. In a fire, such materials can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780267
EISBN: 978-1-62708-281-5
... of polymers are then discussed. The article further includes a case study describing the tribological performance of nylon. It ends by presenting some examples of wear failures of plastics. wear elastomers thermosets glassy thermoplastics semicrystalline thermoplastics lubricants nylon...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300301
EISBN: 978-1-62708-323-2
... Abstract This chapter covers the friction and wear behaviors of plastics and elastomers. It begins by describing the molecular differences between the two types of polymers and their typical uses. It then discusses the important attributes of engineering plastics and their suitability...
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 capable...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730149
EISBN: 978-1-62708-283-9
... of silver comes from recycling. Thermoplastics account for 80% of all plastics and these can be recycled. Heating of thermosetting polymers will cause them to decompose without melting, so they can be used only as landfill. The American Plastics Council has established a system of symbols ( Fig. 14.1...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230441
EISBN: 978-1-62708-298-3
...-temperature ranges, and strength values, is shown in Table 24.2 [ Snogren 1970 ]. An additional classification system, which differs from Tables 24.1 and 24.2 , is [ Gauthier 1990 ]: Natural polymer base Synthetic base Thermoplastics Thermosets Physical forms (one or more multiple...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610377
EISBN: 978-1-62708-303-4
... 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 it to above its melting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870001
EISBN: 978-1-62708-314-0
... and strength and stiffness are less important. Both the reinforcement type and the matrix affect processing. The major processing routes for polymer matrix composites are shown in Fig. 1.3 . Two types of polymer matrices are shown: thermosets and thermoplastics. A thermoset starts as a low-viscosity resin...