| abstract |
[Problem] To provide a polymer molded body that is excellent in mechanical properties such as wear resistance by improving adhesion between a matrix polymer and an organic polymer fiber in a polymer molded body reinforced with organic polymer fibers. To do. SOLUTION: A matrix polymer, a maleic anhydride-modified polymer having a polymer chain compatible with the matrix polymer, an aramid fiber or an aromatic fiber surface-treated with an alkaline aqueous solution and having an amino group or a hydroxyl group on the fiber surface. A polymer molded body obtained by molding a polymer composition containing organic polymer fibers such as polyester fibers is used. The length of the organic polymer fiber is preferably in the range of 0.1 to 1000 μm, and the aspect ratio is preferably in the range of 10 to 10,000. [Selection figure] None |