P.V.C.シートの衝撃引張特性 : 高分子のレオロジー

概要

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High speed impact testing is important and necessary, because materials tested at static speed show quite different behaviour in case of high speeds. The impact machine used in this study in a rotary disk type impact tensile testing machine. The diameter of the disk is 1800 mm and the thickness is 100 mm. The disk is a Ni-Mo-V steel forging, which weighs 2300 kg and rotates up to 1450 rpm. The speed of the disk reaches 140 m/sec when it rotates at 1450 rpm, and the sample of the fiber or high polymer is pulled by the jaw at the same speed. The tensile load is measured and detected by strain gauge fixed on the sample holder and the output of the strain gauge is led to the vertical axis of the synchroscope. The horizontal axis of this synchroscope is time axis and is drawn by a single sweeper driven by an outside circuit containing 45 volt. Various plasticizers such as n-dioctyl phthalate, dioctyl adipate, aricrecyl phosphate were added to study their effect on the impact behaviour of polyvinyl chloride sheet. The rolling of the mixture was done in 100-180℃ for 10 minutes and the pressing was done for 5 minutes in 105-165℃ under a load of 150 kg/cm^2. The sheet was punched in to the shape of dumbell and used as sample. The effect of degree of polymerization and added amount of vinyl acetate was also studied.
社団法人日本材料学会の論文
1963-05-15