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Organofunctional silanes have long been used as promoters of adhesion between polymers and mineral oxide surfaces. The present work reports adhesion results obtained using binary combinations of adhesion-promoting and non-adhesion-promoting silanes patterned onto an oxide adherend surface. The effects of pattern shape, texture (feature size) and the fractional coverage of the adhesion promoter are...
The Air Force Research Laboratory is refurbishing a high-voltage rep-rate pulser that generates 550 kV output pulses with a nominal FWHM of 550 ns at pulse repetition rates of up to 5 Hz. This pulser was originally constructed for the Army Research Laboratory's Electronic Test Devices Laboratory (ETDL). The pulser can drive 20-, 10-, or 5-Omega loads when either one, two, or four 20-Omega PFN's, respectively,...
Insulating films with high relative dielectric constants are used in capacitors when the requirements call for high energy density. Polyvinylidene Fluoride (PVDF) film is of interest in these applications because its dielectric constant is about 10 compared to usual values of 2 to 4. This paper is a summary of Maxwell's recent experience with this film. In part, this experience results from the development...
A two-electrode gas switch with a self-breakdown voltage of 100 kV was operated at a pulse-repetition rate (PRR) of 100 Hz with bursts up to 10 s in duration. The output of a pulse transformer provided the (1 - cos ??t) waveform which charged the switch in about one-half ms. The switch discharged with a peak current of about 10 kA and a total charge transfer of about 10 mC into a damped LC circuit...
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