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Stress-strain curves for poly

FIGURE 13-44 Stress/strain curves for poly(methyl methacrylate) as a function of temperature [redrawn from an original figure by T. S. Carswell and H. K. Nason, Symposium on Plastics, American Society for Testing Materials, Philadelphia (1944)J. [Pg.425]

Figure 14.25 Stress-strain curves for poly(methyl methacrylate) (PMMA) in... Figure 14.25 Stress-strain curves for poly(methyl methacrylate) (PMMA) in...
Fig. 12. Stress-strain curves for poly(ether ester) C. Parameter nominal draw ratio. Initial sample length 25 mm, strain rate 1 mm/s, 25 °C. Rate of extrusion 0.4 mm /s, extrusion temperature 180 "C (for sample description see Table 4) ... Fig. 12. Stress-strain curves for poly(ether ester) C. Parameter nominal draw ratio. Initial sample length 25 mm, strain rate 1 mm/s, 25 °C. Rate of extrusion 0.4 mm /s, extrusion temperature 180 "C (for sample description see Table 4) ...
Polymers such as polystyrene and poly(methyl methacrylate) with a high E at ambient temperatures fall into the category of hard brittle materials which break before point Y is reached. Hard tough polymers can be typified by cellulose acetate and several curves measured at different temperatures are shown in Figure 13.16(a). Stress-strain curves for poly(methyl methacrylate) are also shown for comparison [Figure 13.16(b)]. [Pg.363]

Fig. 32 Stress-strain curves for poly(isobutene) (PIBUT), poly(isobutylene) (PIB85000), and a model acrylic adhesive during adhesive testing on a silicone-coated surface. Adopted with permission from [173]. Copyright 2010 John Wiley Sons, Inc. Fig. 32 Stress-strain curves for poly(isobutene) (PIBUT), poly(isobutylene) (PIB85000), and a model acrylic adhesive during adhesive testing on a silicone-coated surface. Adopted with permission from [173]. Copyright 2010 John Wiley Sons, Inc.
Figure 35-12. Tensile stress-strain curves for poly(styrene), PS, and high-impact poly(styrene), HIPS, at 20 C. The arrows indicate the onset of a whitish coloration. (After C. B. Bucknall.)... Figure 35-12. Tensile stress-strain curves for poly(styrene), PS, and high-impact poly(styrene), HIPS, at 20 C. The arrows indicate the onset of a whitish coloration. (After C. B. Bucknall.)...
Figure 11.5 Stress-strain curves for poly(vinyl chloride) at various strain rates. Note the well-defined yield point at about 5% strain. (1 psi = 6.9 x 10 N/m ) (6). Figure 11.5 Stress-strain curves for poly(vinyl chloride) at various strain rates. Note the well-defined yield point at about 5% strain. (1 psi = 6.9 x 10 N/m ) (6).
Figure 3. Stress-strain curves for poly-(CL-b-St) samples and pure PCL (molded films). Rate,600%/minat23°C. Figure 3. Stress-strain curves for poly-(CL-b-St) samples and pure PCL (molded films). Rate,600%/minat23°C.
Anthony, Caston, and Guth obtained considerably better agreement between the experimental stress-strain curve for natural rubber similarly vulcanized and the theoretical equation over the range a = 1 to 4. KinelP found that the retractive force for vulcanized poly-chloroprene increased linearly with a — l/a up to a = 3.5. [Pg.472]

Figure 10.8 Stress-strain curves for 6% crosslinked poly(n-butyl acrylate) elastomer for the sample and control specimen (strain rate= lOOmm/min, room temperature). Adapted from Kushner et al. (2007). Copyright 2007 American Chemical Society. Figure 10.8 Stress-strain curves for 6% crosslinked poly(n-butyl acrylate) elastomer for the sample and control specimen (strain rate= lOOmm/min, room temperature). Adapted from Kushner et al. (2007). Copyright 2007 American Chemical Society.
Figure 10.4 Stress-strain curves for control and modular polymers. The curve in the bottom (—) is for the polyurethane (PU) made fiom poly(tetramethylene glycol) and... Figure 10.4 Stress-strain curves for control and modular polymers. The curve in the bottom (—) is for the polyurethane (PU) made fiom poly(tetramethylene glycol) and...
Notwithstanding this great variety of mechanical properties the deformation curves of fibres of linear polymers in the glassy state show a great similarity. Typical stress-strain curves of poly(ethylene terephthalate) (PET), cellulose II and poly(p-phenylene terephtha-lamide (PpPTA) are shown in Fig. 13.89. All curves consist of a nearly straight section up to the yield strain between 0.5 and 2.5%, a short yield range characterised by a decrease of the slope, followed by a more or less concave section almost up to fracture. Also the sonic modulus versus strain curves of these fibres are very similar (see Fig. 13.90). Apart from a small shoulder below the yield point for the medium- or low-oriented fibres, the sonic modulus is an increasing, almost linear function of the strain. [Pg.483]

Figure 7 shows the stress-strain curves for the three polymers (23, 24). As seen from the initial slopes of the curves, the Young s moduli of these polymers are similar ( 500 MPa). In contrast, their elongations at break point are significantly different. Thus, poly(3) is rather hard and brittle, whereas poly(4a) is fairly ductile. [Pg.654]

All tensile measurements were performed by the authors with microtomed ribbons of 0.1 mm thickness at ambient temperature. In Fig. 10 typical stress-strain curves for all three poly(ether ester) materials are plotted. All samples were extruded at a common undercooling of 60 °C. The initial tensile modulus increased from 14 MPa for material A to 62 MPa and 208 MPa for B and C, respectively. [Pg.132]

Figure 2. Stress/strain curve for a poly DCHO fibre. Figure 2. Stress/strain curve for a poly DCHO fibre.
Figure 11-16. Stress/ strain curves for a poly(vinyl chloride) at temperatures between —40° C and +80° C. (After R. Nitsche and E. Salewski.) The samples appear to be brittle at —40°C, to be ductile (tough) from -20 to 23° C, to show cold flow from 40 to 60° C, and are rubberlike at 80° C. Figure 11-16. Stress/ strain curves for a poly(vinyl chloride) at temperatures between —40° C and +80° C. (After R. Nitsche and E. Salewski.) The samples appear to be brittle at —40°C, to be ductile (tough) from -20 to 23° C, to show cold flow from 40 to 60° C, and are rubberlike at 80° C.
Figure 11.11. Compressive stress-strain curves for concrete impregnated with poly(methyl methacrylate). Polymer loading MMAl > MMA2 > MM A3. Specimen L25 is a latex-modified concrete. (Dahl-Jorgensen and Chen, 1973.)... Figure 11.11. Compressive stress-strain curves for concrete impregnated with poly(methyl methacrylate). Polymer loading MMAl > MMA2 > MM A3. Specimen L25 is a latex-modified concrete. (Dahl-Jorgensen and Chen, 1973.)...
One way to obtain long-term information is through the use of the time-temperature-superposition principle detailed in Chapter 7. Indeed, J. Lohr, (1965) (the California wine maker) while at the NASA Ames Research Center conducted constant strain rate tests from 0.003 to 300 min and from 15° C above the glass transition temperature to 100° C below the glass transition temperature to produce yield stress master curves for poly(methyl methacrylate), polystyrene, polyvinyl chloride, and polyethylene terephthalate. It should not be surprising that time or rate dependent yield (rupture) stress master curves can be developed as yield (rupture) is a single point on a correctly determined isochronous stress-strain curve. Whether linear or nonlinear, the stress is related to the strain through a modulus function at the yield point (mpture) location. As a result, a time dependent master curve for yield, rupture, or other failure parameters should be possible in the same way that a master curve of modulus is possible as demonstrated in Chapter 7 and 10. [Pg.393]

Fig. 5.66(b) shows a series of stress-strain curves for samples of rubber-toughened poly(methyl methacrylate) (RTPMMA) containing different weight fractions Wp of toughening particles. It can be seen that... [Pg.417]

Fig. 5.66 Stress-strain curves for rubber-toughened polymers, (a) Polystyrene (PS) and high-impact polystyrene (HIPS) (after Bucknall). (b) Rubber-toughened poly(methyl methacrylate) showing the effect of the weight fraction of rubber particlesy Wp (courtesy D.E.J. Saunders). Fig. 5.66 Stress-strain curves for rubber-toughened polymers, (a) Polystyrene (PS) and high-impact polystyrene (HIPS) (after Bucknall). (b) Rubber-toughened poly(methyl methacrylate) showing the effect of the weight fraction of rubber particlesy Wp (courtesy D.E.J. Saunders).
Figure 5 Typical stress/strain curve for a poly(diacetylene) single crystal fibre. The closed circles are for loading and the... Figure 5 Typical stress/strain curve for a poly(diacetylene) single crystal fibre. The closed circles are for loading and the...

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