油展SBRの動的弾性率における時間-温度-濃度等価性

概要

論文の詳細を見る
Hereunder is presented a brief report of the test made of the samples of styrene-butadiene rubber with respect to their dynamic mechanical properties with various concentration of oil ranging from 0 to 40 PHR, at various temperatures between -80 ℃ and 40℃ at varying frequencies from 1 to 100 Hz, and their dynamic shear modulus G', G'' were obtained. For the date, the superposition of time-temperature, time-concentration and time-temperature-concentration was examined. The results will be summerized as follows :(1)The G' and G'' data determined at different temperatures of each sample can be represented by a master curve by applying the method of time-temperature superposition, but the data obtained between -30℃ and -50℃ were scattered considerably. The shift distances log a_T obtained by superposing the date at temperatures below about -5℃ followed the WLF equation type, where the so-called universal values of constants in WLF equation were varied to obtain better fit. The log a_T obtained at temperatures above -5℃ followed the Arrhenius equation type. (2)The G' and G'' data determind at the constant temperature for samples with different concentrations can also be represented by a master curve by applying the method of time-concentration superposition. The shift distance log a_c obtained by superposing the data followed the equation presented by Fujita. (3)The superposition of time-temperature-concentration was found impossible.
社団法人日本材料学会の論文
1972-05-15

油展SBRの動的弾性率における時間-温度-濃度等価性

スポンサーリンク

概要

著者

関連論文

スポンサーリンク