609 砲弾型ボブの押し込み反力による低粘度流体の平面伸張粘度の評価(2)(OS6-3 非ニュートン流体の流動現象,OS6 非ニュートン流体の流動現象,オーガナイズドセッション)

Abstract

New measurement method for planar elongation viscosity was developed. A bullet shaped bob is pushed into a sample liquid held in a cylindrical cap with a constant velocity and the resistant force acting on the bullet bob is measured. The bullet bob is designed to generate steady planar elongation flow in the gap between the bob and the cap. The trial experiments were carried out for standard viscous fluids and polymer solutions. The measured resistant force was a function of planar elongation rate. The analytical method and advantage of this measurement method were discussed.