摘要: The electrostatic charge generating characteristics of JP-4 fuel were determined on both polyester and polyether-type polyurethane foams. Eleven samples of JP-4 fuel, covering a range in electrical conductivity of 0.65 to 10.27 pi... 展开 The electrostatic charge generating characteristics of JP-4 fuel were determined on both polyester and polyether-type polyurethane foams. Eleven samples of JP-4 fuel, covering a range in electrical conductivity of 0.65 to 10.27 picosiemens/m (pS/m) were tested. The conductivity of one sample was increased incrementally to 200 pS/m by use of a static dissipator additive (ASA-3). The charging tendency of the fuels was determined by measuring the filter current developed by the passage of 50 ml of fuel through a cylindrical section of foam held in an electrically isolated filter holder. The charging tendencies of all fuel samples were also determined using a reference paper filter. It was found that JP-4 fuels can become charged electrostatically by flowing through polyurethane foam. However, the magnitude of the charge cannot be predicted from the electrical conductivity of the fuel nor on the basis of its charging tendency on the reference paper filter. The charging tendencies on the polyether foams were about six times greater than on the polyester foams. (Author) 收起