非相溶樹脂を含有したポリエステルフィルムにおける表面構造形成(<特集>複合材料)

概要

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This study is concerned with the analysis of relationship between surface structure and the micro voids that are formed by stretching the composite polymer sheet having incompatible polymer particles. Now we tried to simulate the void formation near surface and surface structure considering the interfacial delamination between Poly(ethylene terephthalate) (PET) and dispersed incompatible polymers, and to compare the numerical results by finite element method (FEM) with experimental ones. The following results were obtained ; (1) Decreasing interfacial tension coincided with increasing the height of protrusion that was formed by stretching experimentally. Also the critical stress of delamination coincided with increasing the height numerically. (2) Increasing interfacial tension or decreasing the critical stress of delamination coincided with enlarging the aspect ratio of the void near surface. These results are similar to the result of study that was intended for the inside of void expression. (3) It is supposed that a basin would be expressed on surface with void expression from the experimental and numerical results quantitatively.
社団法人日本材料学会の論文
2002-05-15