Loading...
Please wait, while we are loading the content...
Similar Documents
Crosslinking of aromatic polyamides via pendant propargyl groups
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Barrick, J. D. St clair, A. K. Campbell, F. J. St clair, T. L. |
| Copyright Year | 1980 |
| Description | Methods for crosslinking N-methyl substituted aromatic polyamides were investigated in an effort to improve the applicability of these polymers as matrix resins for Kavlar trademark fiber composites. High molecular weight polymers were prepared from isophthaloyl dichloride and 4,4'- bis(methylamino)diphenylmethane with varying proportions of the N,N'bispropargyl diamine incorporated as a crosslinking agent. The propargylcontaining diamines were crosslinked thermally and characterized by infrared spectroscopy, differential scanning calorimetry, and thermogravimetric analysis. Attempts were also made to crosslink polyamide films by exposure to ultraviolet light, electron beam, and gamma radiation. |
| File Size | 608557 |
| Page Count | 22 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810005568 |
| Archival Resource Key | ark:/13960/t5n922d5j |
| Language | English |
| Publisher Date | 1980-12-01 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Thin Films Polyamide Resins Infrared Spectroscopy Polymer Matrix Composites Thermogravimetry Irradiation Crosslinking Kevlar Trademark Alkylation Methylene Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
