| 摘要 |
PROBLEM TO BE SOLVED: To provide an adhesive composition for rotors, which is capable of being cured in a short time and has high adhesive power in rotor adhesion for making a rotor magnet, to be used for a small motor or the like and rotated, adhere to a shaft of a rotor, and to provide the rotor which has high adhesion reliability such that components obtained by using the adhesive composition are not separated.SOLUTION: An adhesive composition for rotors comprises a principal agent (A), a curing agent (B) and fumed silica (C). In the principal agent (A), the hydroxyl group of polyol which has ≥4 carbon atoms and ≥4 hydroxyl groups is glycidyl-etherified, and the principal agent (A) has ≥1/3 hydroxyl group in one molecule and ≥2 glycidyl ether groups (epoxy groups) in one molecule. The curing agent (B) is a latent curing agent having ≤20 μm average particle diameter. The fumed silica (C) contains 0.5-5.0 wt.% with respect to the total amount of the principal agent and the curing agent. A rotor is produced by using the adhesive composition for rotors. |
