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thermosetting polymers

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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...
Image
Published: 01 January 2000
Fig. 15 Schematic representation of the structure of a phenol formaldehyde. (a) Two phenol rings join with a formaldehyde molecule to form a linear chain polymer and molecular by-product. (b) Excess formaldehyde results in the formation of a network, thermosetting polymer due to cross-linking. More
Image
Published: 15 May 2022
Fig. 21 Structure of a phenol formaldehyde. (a) Two phenol rings join with a formaldehyde molecule to form a linear chain polymer and molecular by-product. (b) Excess formaldehyde results in the formation of a network thermosetting polymer due to cross linking. Source: Ref 4 More
Image
Published: 30 September 2015
Fig. 23 (a) During manufacturing, the fusion-bonded epoxy coating on the heated steel rebar cures for a short time (less than 10 s) following powder application. It then hardens to a thermosetting polymer. (b) Fusion-bonded-epoxy-coated steel reinforcing rod. Courtesy of Epoxy Interest Group More
Image
Published: 01 January 1997
extensive malleability, coupled with a relatively low strength. (c) Bakelite (a thermosetting polymer) and Lucite (a thermoplastic) are not as “brittle” as Al 2 O 3 and silica glass, but they are not malleable materials at room temperature. (Bakelite is never so, but Lucite becomes ductile at a temperature More
Image
Published: 01 January 2005
Fig. 2 Thermoset elastomers are long-chain polymers connected by cross links represented by circled Xs. More
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Published: 15 May 2022
Fig. 16 Thermoset conversion from liquid resin to rigid polymer during curing process. Adapted from Ref 14 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
... noted. In general, the bonds between polymer molecules can be either weaker secondary bonds (i.e., van der Waals bond, hydrogen bonds) or stronger primary bonds (covalent bonding). These differences in chemical bonding are the reasons for the differences between thermoplastics and thermosets. Weak...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003010
EISBN: 978-1-62708-200-6
... Abstract A thermosetting resin, or thermoset, is a synthetic organic polymer that cures to a solid, infusible mass by forming a three-dimensional network of covalent chemical bonds. Significant applications include construction and thermoset engineering plastics. This article discusses...
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 Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003023
EISBN: 978-1-62708-200-6
... engineering plastics glass transition temperatures rheological analysis thermal analysis thermal properties thermogravimetric analysis thermomechanical analysis thermoplastic polymers thermosetting polymers thermostat resin systems THERMAL ANALYSIS provides a powerful tool for researchers...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003006
EISBN: 978-1-62708-200-6
..., etc.) that can be produced by appropriate processing. Thermoplastics and Thermosets One very important classification scheme is based on the response of the polymer to heat and solvents. There are two extreme types of response possible, leading to the classification of polymers...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003255
EISBN: 978-1-62708-176-4
... them good electrical insulators and poor thermal conductors. There are three categories of polymers: thermoplastics, thermosetting plastics, and elastomers. Thermoplastics have linear chain configurations where chains are joined by weak secondary bonds as described above. These materials often melt...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006865
EISBN: 978-1-62708-395-9
... structure. In general, polymers that have a reasonably regularly ordered chain structure and little or no side branching will crystallize under suitable conditions. Crystallization is inhibited in heavily cross-linked (thermoset) polymers and in polymers that contain bulky side groups. There are three...
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: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003419
EISBN: 978-1-62708-195-5
... on the matrix being a thermoset polymer. The main reason for the lack of widespread acceptance of thermoplastic matrices is that they tend to be more difficult to process into a composite than thermosets. However, this fact does not mean that there are no techniques to manufacture composites with thermoplastic...
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: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009071
EISBN: 978-1-62708-177-1
... Polymer matrices used for composite materials can be generally described as either thermoplastics or thermosets. Thermosets are polymer resins that crosslink and form a three-dimensional structure when cured. Once cured, the network structure is irreversible and cannot be reshaped or made to flow below...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006373
EISBN: 978-1-62708-192-4
... material properties, including chemical inertness, self-lubricating behavior, and low mass density. The wear rate of the majority of polymers during dry friction against metals is quite low. Polymers are commonly divided into the following three groups: thermoplastic polymers, thermoset polymers...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003447
EISBN: 978-1-62708-195-5
... composites and thermoset-matrix composites. The thermoplastic-matrix composites include thermoplastic polyester resins and fiber resin composites; thermoplastic polyamide resins and fiber-resin composites; and thermoplastic polysulfone resins and fiber-resin composites. polymer-matrix composites...