INVESTIGATION OF MATERIALS AND SYSTEMS FOR PROTECTION AGAINST FLASHBLINDNESS EFFECTS OF NUCLEAR DETONATIONS
Final rept. 1 Jun 1963-1 May 1964 on Phase 1
POLACOAT INC BLUE ASH OH
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The initial phase of a research effort to develop an ophthalmic protective device for use against flashblindness resulting from nuclear detonations is outlined. Efforts to develop a sensitive and relatively transparent photothermosensitive material, which can be prepared as a thin film and can become a filter having high optical density upon exposure to intense electromagnetic radiation, are described. Several materials were prepared which possessed satisfactory spectral absorption characteristics and were suitable for application to nuclear flashblindness protection. The synthesized compounds were members of the triphenylmethane, azo, and polymethine dye classes. The formulation of these materials as photochromic thin film filters produced systems which became colored in less than 40 nanoseconds and reached an optical density of 3.8 in 100 microseconds, measured at the wavelength of the absorption maxima. The films prepared had an initial transmittance of 70-80 percent. The problem of storage stability of the photothermosensitive materials at -65F to 125F for periods of at least 6 months was not solved. The feasibility of a two-component system which combines the two components and activates the system just prior to use was established.
- Weapons Effects (Biological)
- Radiation and Nuclear Chemistry