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Tearing energy temperatures

Effect of Tear Rate and Test Temperature on Tear Energy Gc. 13... [Pg.3]

Measurements of tear energy Gc as a function of tear rate at various temperatures are plotted in Figure... [Pg.13]

Fig. 4. Rubbery tear energy master curves for Epon 878/diaminodiphenylmethane networks of different reactant ratios O A/E = 0.65 A/E = 1.00 A A/E - 1.60. Reference temperature is Tg. Curves constructed using a best fit algorithm. (After Swetlin... Fig. 4. Rubbery tear energy master curves for Epon 878/diaminodiphenylmethane networks of different reactant ratios O A/E = 0.65 A/E = 1.00 A A/E - 1.60. Reference temperature is Tg. Curves constructed using a best fit algorithm. (After Swetlin...
Fig. 6. Stoichiometric DGEBA/DDS network rubbery tear energies versus reduced test temperature, T-Tg. Tear energies determined using single edge notch specimens of crosshead rate of 0.05 cm/min. Epon 828/DDS O Epon lOOlF/DDS A Epon 1002F/DDS A Epon 1004/DDS V Epon 1007F/DDS. (After LeMay )... Fig. 6. Stoichiometric DGEBA/DDS network rubbery tear energies versus reduced test temperature, T-Tg. Tear energies determined using single edge notch specimens of crosshead rate of 0.05 cm/min. Epon 828/DDS O Epon lOOlF/DDS A Epon 1002F/DDS A Epon 1004/DDS V Epon 1007F/DDS. (After LeMay )...
It was found that both normalizations yielded tear energy master curves over all the test temperatures investigated for all but the most highly crosslinked 828/DDS network. The fact that master curves can be generated over the entire range of test temperatures shows the important role that M,. plays in the rubbery fracture of these highly crosslinked epoxies. [Pg.131]

For simple C-C crosslinked elastomers (Gent and Lai, 1994), the reduction factors, ar, used to transform tear energy results at different temperatures as in Figure 10.12 to yield a master curve as in Figure 10.13 are found to correspond closely to the universal form of the WLF rate-temperature equivalence relation (Ferry, 1970) ... [Pg.487]

Efforts to optimize the fits of the results calculated from Eq. (35) with temperature-reduced tear energy data yielded ci = 1000 C2,100 C3,10 C4,0.020 and /i, 7.5 x 10 for all of the elastomers tested. C5 varies from polymer to... [Pg.213]

Figure 5.5 Effects of tear rates and temperatures on tearing energy (a) unfilled vulcanized NR, (b) black-filled vulcanized SBR. Figure 5.5 Effects of tear rates and temperatures on tearing energy (a) unfilled vulcanized NR, (b) black-filled vulcanized SBR.
Figure 5.13 The effect of degree of crystaUinity and glass transition temperature on development of knotty tearing energy as a function of tear rate at temperatures to equalize the molecular mobility of each rubber. (Reproduced from ref. 8.)... Figure 5.13 The effect of degree of crystaUinity and glass transition temperature on development of knotty tearing energy as a function of tear rate at temperatures to equalize the molecular mobility of each rubber. (Reproduced from ref. 8.)...
The Influence of Temperature and Rates on the Tearing Energy of Pre-Stressed Black-Filled Vulcanized NR... [Pg.182]

Figure 5.19 Tearing energy vs rate at four different temperatures. Figure 5.19 Tearing energy vs rate at four different temperatures.
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See also in sourсe #XX -- [ Pg.159 ]



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