| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that mechanical strength of a conventional polypropylene molding is not sufficiently high as evidenced by breaking strength thereof which is at most 240 MPa and is lower than, for example, the breaking strength of metals such as copper and the like. ! SOLUTION: Provided is a polypropylene molding which has a degree of crystallinity of 48% or more obtained by a wide-angle X-ray diffraction measurement, and which shows a half width of an orientation peak in the azimuthal intensity distribution of 5.5° or less and a long cycle obtained by a small angle X-ray scattering measurement of 12 nm or more and 16 nm or less. ! COPYRIGHT: (C)2015,JPO&INPIT |
