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natural rubber

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780146
EISBN: 978-1-62708-281-5
... been many investigations of the outdoor oxidative degradation of natural rubber, considerable information is available on the photo-oxidative degradation of polymers. Because pure hydrocarbons absorb oxygen at wavelengths below 290 nm, it is believed that contaminants and adventitious photosensitizers...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780336
EISBN: 978-1-62708-281-5
.... , Microbial Degradation of Natural Rubber Vulcanizates , Appl. Environ. Microbiol. , Vol 50 , 1985 , p 965 – 970 15. Huang S.J. , Biodegradable Polymers , Encyclopedia of Polymer Science and Engineering , Vol 2 , Kroschwitz J.L. , Ed., John Wiley & Sons , 1985 , p 220 – 243...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300301
EISBN: 978-1-62708-323-2
... N force. These were the results for the spectrum of rubber: natural rubber, neoprene, and polyurethane. The tests were not as bad in continuous motion. Tests were attempted with a hard steel rider (52100 at 60 HRC). However, the results did not compare with even the worst plastics...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780185
EISBN: 978-1-62708-281-5
... it. Properties of different polymers can be markedly different: for instance, urethanes seldom have tensile strengths below 20.7 MPa (3.0 ksi), whereas silicones rarely exceed 8.3 MPa (1.2 ksi). Natural rubber is known for high elongation, 500 to 800%, whereas fluoroelastomers typically have elongation values...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300421
EISBN: 978-1-62708-323-2
... plastics started to be used for things (other than toys that usually break at first use); this was the situation after World War II. Nylons came into fame as parachute replacements for unavailable silk, and nylon ropes replaced manila and sisal ropes. The unavailability of natural rubber promoted...
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
... Table 9.2 Several rubbers R Rubber H Polybutadiene (buta-rubber) Cl Polychloroprene CH 3 Polyisoprene (natural rubber) In all cases there is weak van der Waals bonding between neighboring chains. This allows heating to melt thermoplastics. In contrast to thermoplastics...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780164
EISBN: 978-1-62708-281-5
...Designations and general electrical applications for elastomers Table 7 Designations and general electrical applications for elastomers Elastomer designation Chemical type Major electrical applications ASTM D 1418 Trade name or common name NR Natural rubber Natural...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290243
EISBN: 978-1-62708-306-5
... be viscoelastic. Pressure-sensitive adhesives are primarily used in tapes and labels, with tapes representing the largest area of application. The primary families used as the adhesive component in pressure-sensitive adhesives, in order of decreasing volume and increasing price, include natural rubber...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780153
EISBN: 978-1-62708-281-5
..., will affect polymers by attacking covalent bonds, such as those present in natural rubber materials. Rubber is used to insulate high-voltage equipment, such as ignition cable, where a high degree of flexibility is essential. Because ozone is generated by and often surrounds high-voltage equipment...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780003
EISBN: 978-1-62708-281-5
... 137 280  LDPE –110 or –20 –165 or –5 115 240 Polypropylene  Atactic –18 0 176 350  Isotactic –10 15 176 350 Polyisobutylene –70, –60 –95, –75 128 260 Polyisoprene  Cis: natural rubber –73 –100 28 80  Trans: gutta percha … … … … Polymethyl pentene...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780249
EISBN: 978-1-62708-281-5
... to crack propagation. Figure 14 displays the applicability of the CL model to FCP in PC ( Ref 61 ). Experimental data of a natural rubber vulcanizate ( Ref 67 ) have been analyzed using the CL model; Fig. 15 displays the applicability of this model to FCP in this rubber compound. The CL model obviously...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780211
EISBN: 978-1-62708-281-5
... on crack propagation rates in natural rubber ( Ref 4 ). In the case of a liquid, the behavior can be caused by several different effects ( Ref 5 , 6 ). First, there is always the possibility that the liquid may be a solvent and be absorbed by the polymer; the absorption process may occur more rapidly...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910237
EISBN: 978-1-62708-250-1
... and Tantalum Caustic Soda Mineral Acids Thermoplastics Thermosets Fiber-Reinforced Plastics (FRPs) Natural (NR) or Synthetic Polyisoprene (IR) Polybutadiene (BR) and Styrene-Butadiene (SBR) Copolymer Polychloroprene (CR) Butyl Rubber (IIR) Nitrile Rubbers (NBR) Chlorosulfonated...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780267
EISBN: 978-1-62708-281-5
..., butyl rubber, and natural rubber ( Ref 21 , 22 ). Through extensive experimentation on the sliding of rubber against hard surfaces, it was found that the process of sliding for rubber takes place through a series of detachments at the contact points, giving it the look of a wave ( Fig. 5 ). These waves...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910363
EISBN: 978-1-62708-250-1
... Water Alkalies Aliphatic Aromatic Halogenated Alcohol Acids Butadiene rubber BR P G E F-G P P P G F-G Low Natural rubber, isoprene rubber NR, IR P G E F-G P P P G F-G Low Chloroprene rubber CR VG VG G E G F P G F-E Low-medium Styrene-butadiene rubber...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300013
EISBN: 978-1-62708-323-2
... and Manifestations of Friction Questions for Discussion When a rubber wiper chatters as it rubs on a windshield, the noise is coming from the rubber instantaneously sticking on the glass and breaking free. The intermittent cycling of forces on the rubber sets up a harmonic vibration noise. If one...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780238
EISBN: 978-1-62708-281-5
... High-molecular-weight PMMA 21 , 25 Polystyrene 30 , 35 Epoxy 24 Polyethylene copolymer 26 Decreasing crack propagation rate with increasing mean stress Low-density polyethylene 5 Polyvinyl chloride 34 Low-molecular-weight PMMA 21 Rubber-toughened PMMA...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540297
EISBN: 978-1-62708-309-6
.... A large number of polymers are available, many with complex chemical structures and long names. We can separate them into three distinct groups on the basis of their physical properties: thermosets, thermoplastics, and elastomers (rubbers). The first two are considered as glassy polymers. Thermosets...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350125
EISBN: 978-1-62708-315-7
... Halogenated Alcohol Acids Butadiene rubber BR P G E F–G P P P G F–G Low Natural rubber, isoprene rubber NR, IR P G E F–G P P P G F–G Low Chloroprene rubber CR VG VG G E G F P G F–E Low-medium Styrene-butadience (nitrile) rubber SBR P G E F–G P P P G F...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740163
EISBN: 978-1-62708-308-9
... and Springback Defects in Sheet Metal Parts Press Bending Press-Brake Forming Deep Drawing Fundamentals of Drawing Stretch Forming Spinning Rubber-Pad Forming Fluid-Cell Process Fluid Forming Drop Hammer Forming Electromagnetic Forming (EMF) Superplastic Forming (SPF...