Compositions – Electrically conductive or emissive compositions
Patent
1980-08-14
1983-05-10
Lusignan, Michael R.
Compositions
Electrically conductive or emissive compositions
29620, 174137A, 174138C, 174140C, 252511, 260DIG17, 361218, H01B 100
Patent
active
043828817
ABSTRACT:
A method of preparing an antistatic coating exhibiting a desired value of surface resistivity which is substantially stable with respect to time takes as its starting point a commercial antistatic product having a synthetic resin base and substantially free from metallic particles but of which the surface resistivity, measured after mixing with its hardener and drying, is very much below the desired value. A compatible insulating resin is added to this product so as to raise the surface resistivity, still measured after mixing with the hardener and drying, to a value much higher than the desired value. The resulting product is then subjected to an accelerated ageing treatment causing a reduction in surface resistivity with terminal asymptotic development to the level of the desired value. Such a coating may be applied to radomes and other aircraft surface elements, and has the advantage that its conductivity does not increase appreciably with age.
REFERENCES:
patent: 2386095 (1945-10-01), Edgar et al.
patent: 3616140 (1971-10-01), Copeland et al.
patent: 4075260 (1978-02-01), Tsen et al.
patent: 4080643 (1978-03-01), Cline
patent: 4090984 (1978-05-01), Lin et al.
Avions Marcel Dassault-Breguet Aviation
Breiner A. W.
Lusignan Michael R.
Page Thurman K.
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