| 摘要 |
<p>A fiber-reinforced resin composite material which comprises an in-plane pseudoisotropic plate formed by providing two or more types of reinforcing fibers at least one of which has a negative coefficient of linear expansion, preparing a prepreg sheet comprising a combination of such fibers and laminating such sheets, and is adjusted to have a reduced coefficient of linear expansion, in particular, to have the coefficient of zero. The coefficient of linear expansion of the composite material is adjusted to be as small as possible in the course of manufacture of the material using various means, that is, by yarn doubling or comingling of a combination of two or more types of reinforcing fibers, by combining various prepreg sheets formed from the resultant fiber bundles, by preparing a fiber bundle having a predetermined coefficient by yarn doubling or the like, by changing the three-dimensional structure of doubled fibers, woven fabric or the like, or by a combination of the above.</p> |
