. The Bell System technical journal . c^ / POLYETHYLENE AU FOR STRAIGHT PART = KILOCALORIES PER MOLE 1 INVERSE OF ABSOLUTE TEMPERATURE Fig. 39—Shear elasticity of polyethylene and nylon 6-6 plotted as a functionof temperature and 10 20 30 40 50 TEMPERATURE IN DEGREES CENTIGRADE Fig. 40—Value of Lame X elastic constant for poh-ethylene and nylon 6-6plotted as a function of frequencj^ and temperature. MECHANKWL PKOIMORTIES OF POLYMERS 167 against \/T where T is tlie absolute temperature. Both are plotted for8 me and 30 mc. The dispersion
. The Bell System technical journal . c^ / POLYETHYLENE AU FOR STRAIGHT PART = KILOCALORIES PER MOLE 1 INVERSE OF ABSOLUTE TEMPERATURE Fig. 39—Shear elasticity of polyethylene and nylon 6-6 plotted as a functionof temperature and 10 20 30 40 50 TEMPERATURE IN DEGREES CENTIGRADE Fig. 40—Value of Lame X elastic constant for poh-ethylene and nylon 6-6plotted as a function of frequencj^ and temperature. MECHANKWL PKOIMORTIES OF POLYMERS 167 against \/T where T is tlie absolute temperature. Both are plotted for8 me and 30 mc. The dispersion in both materials is evident. Below30°C^ the shear elasticity of polyethylene varies exponentially with thetemperature with an activation energy of kilocalories per this temperatiue a deviation occurs due to the approach to themelting temperature. Nylon has a smaller variation with the longitudinal and shear wave measurements one cancalculate the Lame X elastic constant and this is shown plotted on Fig. 40for both polyethylene and nylon 6-6 as a function of temperature for
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
