| abstract |
PROBLEM TO BE SOLVED: To provide a gear having excellent continuous moldability in practical use and having both high slidability and high durability. In one embodiment, (A) a thermoplastic resin and (B) cellulose nanofibers having an average fiber diameter of 1000 nm or less are contained, and the number average molecular weight of the (A) thermoplastic resin is 1000 to 150,000. Provided is a resin molded body composed of a resin composition in the range, wherein the arithmetic average surface roughness Sa of the sliding surface with other gear teeth is 3.0 μm or less. [Selection diagram] Fig. 1 |