Methods of preparing polyhemiaminals and polyhexahydrotriazines |
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| 申请号 | US14958992 | 申请日 | 2015-12-04 | 公开(公告)号 | US09951184B2 | 公开(公告)日 | 2018-04-24 |
| 申请人 | International Business Machines Corporation; | 发明人 | James L. Hedrick; Jeannette M. O'Brien; Kumar R. Virwani; | ||||
| 摘要 | Polyhexahydrotriazine (PHT) film layers are formed by a process comprising heating a first mixture comprising i) a solvent, ii) paraformaldehyde, and iii) a diamine monomer comprising two primary aromatic amine groups at a temperature of about 20° C. to less than 150° C. This heating step forms a stable polyhemiaminal (PHA) in solution, which can be cast on a surface of a substrate, thereby forming an initial film layer comprising the PHA. The initial film layer is heated at a temperature of 180° C. to about 280° C., thereby converting the PHA film layer to a PHT film layer. Young's moduli of about 8 GPA to about 14 GPA have been observed for the PHT film layers. | ||||||
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