Quick responsive, shape memory thermoset polyimide and preparation method thereof
US10155850B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2015 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | Jan 7, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/1082
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A fast-response thermoplastic shape-memory polyimide and a preparation method thereof, related to a polyimide and a preparation method thereof. The present invention aims to solve the problem in high-temperature conditions of slow shape recovery poor stability, and poor mechanical properties of a shape-memory polymer prepared by utilizing an existing method. The structural formula of the polyamide of the present invention is as represented by formula (I). The preparation method is: 1. preparation of a diamine solution; 2. preparation of an anhydride-terminated high molecular weight polyamic acid; 3. preparation of a viscous sol-gel; and, 4. preparation of the thermoplastic shape-memory polyimide. The thermoplastic shape-memory polyimide prepared per the present invention is provided with a very fast shape recovery rate and improved shape-memory effect. The present invention is applicable in the field of polyimide preparation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.