Dynamic Mechanical Properties of Polyoxymethylene. II
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概要
- 論文の詳細を見る
Real and imaginary parts of complex rigidity of melt-grown polyoxymethylene are measured over a frequency range from 3.0 to 0.01 Hz at various temperatures from -3℃ to 138℃ by a new torsional pendulum apparatus. Master curves for real and imaginary parts of complex rigidity in the range of α-dispersion are composed by performing a suitable superposition for the dispersion curves. Empirical relation for the time-temperature reduction obtained from the superposition procedures can be theoretically interpreted on the basis of the concept of "smearing-out effect of crystalline field" arising from incoherent lattice vibration in polymer crystals. The apparent activation energy of the α-dispersion evaluated from the temperature dependence of reducing factor is 32 and 25 kcal./mol. in the temperature regions above and below about 95℃ respectively. However, it becomes very large in the temperature region below about 40℃.
- 社団法人応用物理学会の論文
- 1967-08-05
著者
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Hikichi Kunio
Department Of Physics Faculty Of Science Hokkaido University
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Kaneko Motozo
Department Of High Polymer Science Faculty Of Science Hokkaido University
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Miki Kyosuke
Department Of Polymer Science Faculty Of Science Hokkaido University
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