硬質ポリウレタンのRIM成形品の衝撃特性(<小特集>X線材料強度小特集)

概要

論文の詳細を見る
Impact properties of moldings made by Reaction Injection Molding(RIM), which are integral-skin foams and have sandwich atructures consisting of high density skin and low density core layers, were invesrigated by Charpy impact tests. A remarkable difference in failure mode was observed depending upon yhe layer composition. The failure modes were classified as: (1) tensile fracture-type became over two times greater than that of the tensile fracture-type. In addition, the layer composition at which the fracture mode changes from the tensile fracture to the buckling fracture was predicted by using the static flexural properties of the moldings at comparatively low temperatures and the reciprocation law of time-temperature. The results obtained can be used as a sound guide to determine the optimum layer composition for the structural design of moldings concerning impact properties, and should be valuable when such moldings are applied to light-weight and thermal-insulated housing.
社団法人日本材料学会の論文
1987-08-15