飞机高压氧充氧阀头材料接触静电积累特性研究

飞机充氧系统在充氧过程中,阀头内部绝缘材料与高速气流摩擦等原因,在其表面可产生大量静电,在高压纯氧环境下静电放电极其危险。为避免因静电积累引发的燃爆事故,对飞机充氧阀头常用的两种材料进行了接触静电积累特性研究;探究了接触压力、环境相对湿度、分离速度等因素对不同材料接触静电积累的影响;并通过试验验证了在静电积累特性上,聚三氟氯乙烯相比较尼龙1010更适合作为飞机充氧阀头球头材料。这为进一步探索静电特性上试用于飞机的绝缘材料提供试验依据与研究方向。

Study on Contact Electrostatic Accumulation Properties of Oxygen Filling Valve Head Materials Applied to Aircraft

In the process of oxygenation, the ball head inside the oxygen valve head separated with valve body, and the friction with the high speed air flow can produce a large amount of static electricity, which is extremely dangerous to the aircraft oxygen filling system in the high pressure pure oxygen environment. In order to avoid the combustion accidents caused by electrostatic accumulation, in this paper we take a study on electrostatic properties of oxygen filling valve head common materials, the influence of contact pressure, RH and separation speed on contact static electricity was then studied, and through test we verified that in the electrostatic properties compared to nylon 1010 polyfluorochloroethylene is more suitable as the head ball material of aircraft .This paper provides experimental basis and research direction for the further exploration of electrostatic properties on aircraft insulation materials.