Abstract
It is generally known that the bending resistance of composite film, which consists of organic composition and filler, decreases as the amount and particle size of added filler increases. However, the precise relation between bending resistance(cycles at break in bending test : Bc)and filler has not been clearly known. For this reason, we examined the influence of filler on the Bc of composite film. As a result, we found that there was a linear relationship between the Bc and the specific surface area unit weight of filler in composite film(Sunit).Furthermore, the Bc value of unknown composite film(X)is able to be obtained from the breaking elongation of bulk film(X without filler)and Sunit of X from the linear relationship of the prediction relation. Finally, we verified the usefulness of the prediction relation with the composite film of different organic composition.
