加硫ゴムの破壊特性に及ぼす油の効果

概要

論文の詳細を見る
The present study was undertaken to investigate systematically the influence of the change in cohesive energy of rubber brought by duluent oil its ultimate properties, and also to obtain informations about the type of molecular motions of the rubber by applying the time-concentration superposition principle. The results for SBR samples with commercial Circolight oil, which is known as a poor solvent type for SBR in industry, had already been reported. Here the results for SBR samples with commercial Aromax No. 3 oil, which is known as a good solvent type for the rubber, were compared with the previous results. The stress at break f_b, the ultimate extension ratio α_b and the fracture energy W_b were examined as a function of the effective crosslink density ν_e, the oil concentration v_1 and the strain rate ε^^・. The results were shown in Fig. 1 with schematic representations. The two kinds of oil had almost the same effects on the ultimate properties except the ultimate extension ratio α_b. Therefore, it was expected that every type of oil would have the same effect on ultimate properties of SBR. The data of the stress at break f_b for the samples with different oil concentrations could be represented by a master curve by applying the method of time-concentration superposition. The two master curves obtained for the samples with different kinds of oil almost coincided with each other. The shift distances log a_c, which were obtained by superposing the data, followed Fujita's equation rather than the one based on Sato's theory of solution type.
社団法人日本材料学会の論文
1973-05-15

加硫ゴムの破壊特性に及ぼす油の効果

スポンサーリンク

概要

著者

関連論文

スポンサーリンク