随着新能源汽车、火箭发动机系统、卫星等新技术和新装备的不断发展,对其携带液体燃料和高压气体的压力容器提出高气密、轻质量、长寿命的苛刻要求.对此,本文提出一种含超薄金属内衬轻量化复合材料压力容器的设计与制备技术.研究了缠绕纤维与芯模表面间滑线系数的表征方法,提出了基于工艺可实现的精密缠绕理论;研制出0.8mm厚超薄铝合金内衬;建立了仿壁虎脚结构的界面层设计理论模型,制备出超薄金属内衬与复合材料层间的超强界面层;掌握了复合材料结构的损伤自修复方法,提高了复合材料压力容器的可重复使用次数,所研制的轻量化复合材料压力容器相比同容积、同压力的金属容器减重70%.

In the development of the new energy cars, the rocket engine systems and the satellites, there are some special requirements, such as the high air tightness, the lightweight and the long-life, for the composite pressure vessels used to store the liquid propellant and high pressure gas. In this paper, a new method is proposed to design and prepare the lightweight composite pressure vessels with ultra thin metal liner. A characterization method for the slippage coefficient measurement between the fiber and the mandrel is developed. The Al alloy liners of 0.8mm in thickness are fabricated. A new stronger interface between the composite layer and the ultra thin Al alloy liner is designed according to the structure of the Gecko feet. A Self-healing technology is adopted to improve the reusable properties. With the lightweight composite pressure vessels, the weight can be saved by 70% as compared to the metal pressure vessels with the same volume and the same pressure.