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Predictive aging of polymers (Document No: 20080008738)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1990 |
| Description | A method of predicting aging of polymers operates by heating a polymer in the outdoors to an elevated temperature until a change of property is induced. The test is conducted at a plurality of temperatures to establish a linear Arrhenius plot which is extrapolated to predict the induction period for failure of the polymer at ambient temperature. An Outdoor Photo Thermal Aging Reactor (OPTAR) is also described including a heatable platen for receiving a sheet of polymer, means to heat the platen and switching means such as a photoelectric switch for turning off the heater during dark periods. |
| File Size | 584496 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20080008738 |
| Archival Resource Key | ark:/13960/t1sf7p825 |
| Language | English |
| Publisher Date | 1990-09-18 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Aging Materials Durability Patents Polymers Solar Radiation Thermal Degradation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
