| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-reliable polymer piezoelectric material improved in wet-heat resistance.SOLUTION: Provided is a polymer piezoelectric material which contains: an optically active aliphatic polyester (A) with a weight-average molecular weight of 50,000-1,000,000; and a stabilizer (B) with a weight-average molecular weight of 200-60,000 and one or more functional groups selected from a group consisting of carbodiimide groups, epoxy groups, and isocyanate groups, wherein the degree of crystallization obtained by the DSC method is 20-80%, and 0.01-2.8 pts.wt of the stabilizer (B) are contained based on 100 pts.wt of the aliphatic polyester (A). |
