ABS樹脂の破壊靱性値評価に関する実験的一考察

概要

論文の詳細を見る
This paper is concerned with the toughness of ABS resin. The generally accepted method for evaluating the toughness of solid polymers with a notch or crack involves use of Izod Impact Test : the evaluation in terms of fracture mechanics is not yet prevalent for polymeric materials in japan. The authors have performed 3-point bending fracture toughness tests on ABS resin, which is a typical rubber toughened polymer alloy, and investigated the dependence of crosshead speed HS and of the duration Tr of constancy of the displacement of the crosshead on the J-integral. The results are as follows : (1) The dependence of both HS and Tr on J_<IC> should not be neglected. (2) Above all, HS has a large effect on the J_<IC> at a HS of 200 mm/min is 7.2 times higher than that at a HS of 0.5 mm/min and the relationship is approximately expressed by the following empirical formula : In J_<IC>=0.341 n HS-0.10,(0.5 mm/min⪈HS⪈200 mm/min : Tr=0) (3) J_<IC> increases with Tr, but the effect of Tr on J_<IC> is not as significant as that of HS.
社団法人日本機械学会の論文
1997-05-25