1-20 of 66 Search Results for

natural rubber

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
Image
Published: 15 May 2022
Fig. 5 Geometric isomers of polyisoprene. (a) Cis-polyisoprene (natural rubber). (b) Trans-polyisoprene (gutta percha). Source: Ref 4 More
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001087
EISBN: 978-1-62708-214-3
... and open rotor (impeller). Both the case and the ductile iron rotor core were covered by natural rubber. Analyses conducted included surface examination of wear patterns, chemical analysis of materials, measurement of mechanical properties, and in-place flow tests. It was determined that the proximate...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006945
EISBN: 978-1-62708-395-9
... Association NIST National Institute of Standards and Technology NMR nuclear magnetic resonance NR nitrile resins; natural rubber NRM nuclear magnetic resonance PA polyamide PAE polyaryl ether PAEK polyaryl ether ketone (also abbreviated PEK) PAI polyamide-imide PAK polyaromatic ketones PAN polyacrylonitrile...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006870
EISBN: 978-1-62708-395-9
.... Application of a load results in an initial linear stress–strain response, representing elastic deformation. Continued application of stress produces plastic deformation and yielding prior to rupture. In contrast, the stress–strain curve associated with natural rubber exhibits an ever-increasing slope...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006928
EISBN: 978-1-62708-395-9
... 2 Tensile Properties The chemical composition and the long-chain nature of polymers lead to some important differences with metals. These differences include significantly lower stiffnesses, much higher elastic limits or recoverable strains, a wider range of Poisson’s ratios, and time...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006913
EISBN: 978-1-62708-395-9
... in terms of their electrical properties, some of which are conductive or semiconductive. Elastomers, which are natural or synthetic rubber-like materials with excellent elastic properties, are often used. Their designations and general electrical applications are given in Table 7 . Table 8 provides...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
... the electrochemical nature of corrosion and provides the typical analysis of environmental- and corrosion-related failures. It presents common methods of testing of laboratory corrosion and discusses the processes involved in the prevention of environmental- and corrosion-related failures of metals and nonmetals...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006944
EISBN: 978-1-62708-395-9
... Phenolic resins 300/572 300/572 Polyimide resins 315/599 370/698 Silicone resin 70/158 70/158 Acrylonitrile butadiene rubber (NBR) −40/−40 5/41 Butadiene rubber (BR) −95/−139 −85/−121 Ethylene propylene diene rubber (EPDM) −95/−139 110/230 Natural rubber (NR) 95/203 110/230...
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
... rather than remain linear. This coiling is believed to be responsible for the elasticity observed in elastomers (e.g., rubber). Fig. 5 Geometric isomers of polyisoprene. (a) Cis-polyisoprene (natural rubber). (b) Trans-polyisoprene (gutta percha). Source: Ref 4 Polymer Structure...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006939
EISBN: 978-1-62708-395-9
... process that could be either a dry or a wet process. Talc Talc is commonly used as a surface-dusting material to prevent rubber compounds from sticking together. It is a naturally occurring mineral deposit of either hydrated magnesium calcium silicate or hydrated magnesium silicate. The median...
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
... thermoplastics because of the presence of heavy cross links, which inhibits the sliding of polymer chains past each other. Elastomers are typified by natural rubber and by a series of synthetic polymers exhibiting similar mechanical behavior. Polyisoprene, for example, is a synthetic rubber that exhibits...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001666
EISBN: 978-1-62708-229-7
..., and its relationship to surface topographic features, were examined and recorded by magnetic rubber and high-resolution dental rubber replicating materials. Corrosion deposits on keyway surfaces and within the crack were collected with acetate foil replicas applied and then stripped from the keyway...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006910
EISBN: 978-1-62708-395-9
... to processing or aging) ( Ref 4 ) and to the environment, both gaseous and liquid ( Ref 3 ). One example of the effects of gaseous environments is the effect of atmospheric ozone on crack propagation in natural rubber ( Ref 5 ). In the case of a liquid, the behavior can be caused by several different effects...
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
... primarily from the interest in the friction and wear of automobile tires and industrial seals. Schallamach carried out extensive studies on relatively softer rubbers such as polyisoprene, butyl rubber, and natural rubber ( Ref 21 , 22 ). Through extensive experimentation on the sliding of rubber against...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006850
EISBN: 978-1-62708-395-9
.... Elastomers The study of wear of elastomers has evolved primarily from interest in the friction and wear of automobile tires and industrial seals. Schallamach carried out extensive studies on relatively softer rubbers such as polyisoprene, butyl rubber, and natural rubber ( Ref 20 , 21 ). Through...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006918
EISBN: 978-1-62708-395-9
..., polymers are particularly sensitive to mechanical loading conditions, molecular variables, additives, and environmental factors ( Ref 1 – 9 ). Mechanical variables affecting fatigue performance include the amplitude, mean and peak cyclic forces, and the nature of the waveform ( Ref 10 – 13 ). Fatigue life...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006940
EISBN: 978-1-62708-395-9
... loading limits, and loading waveform. These features appear to produce failure characteristics not otherwise encountered. Additionally, due to the viscoelastic or time-dependent nature of the polymers, significant energy dissipation occurs under pure fatigue or combined creep-fatigue loading conditions...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001696
EISBN: 978-1-62708-234-1
..., and is similar to the tubing used in LC-39B's GO 2 System and B/A Line. The tubing was specified to be coated with either a nitrile-rubber-base, aluminum pigmented coating or a polyamide epoxy coating with an aliphatic polyurethane topcoat. The coatings are required for corrosion protection of 300-series...
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
... polymer chains. These materials have cross-links between the polymer chains that inhibit the sliding of polymer chains past each other. Elastomers are typified by natural rubber and by a series of synthetic polymers that exhibit similar mechanical behavior. The physical state of a polymer under...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001576
EISBN: 978-1-62708-219-8
... on the blade. One pair of a blade and a ring was removed from the rotor and fixed firmly on a electro-magnetic vibration tester. As shown in Fig. 7 , it was mounted in a cantilever style. Fig. 7 S-N curve of blade corner The exciting frequency of the vibration tester was adjusted to the natural...