Hot-Drawn Fiber-Reinforced Thermoplastic Wire

该项目涉及一种生产纤维增强热塑性金属丝的新工艺。这种钢丝除了在制造和维修中具有更大的灵活性外，还提供了更高的疲劳强度、抗冲击性和抗化学侵蚀性。在关键结构应用中使用高强度有机纤维增强塑料（FRP）钢丝的最大障碍是高成本和与产品质量相关的巨大不确定性。近100%的超声波或其他无损检测要求，以确保质量。相比之下，金属丝是按英里生产的，并在小样本的简单测试基础上被接受。金属丝的质量是通过严格控制化学成分和利用非常可重复的制造过程来保证的。PI提出了生产纤维增强电线的类似概念。使用以下步骤。将增强纤维纱线与基体按适当比例混纺，控制纤维/树脂比。然后将混合物加热到接近基体的熔点，并通过热模拉出。电线以适当的速率冷却，以在基体中达到所需的结晶度。用这种方法生产的电线有许多用途。其中最主要的是深海仪器阵列的系泊线。

The project deals with a novel process of producing fiber reinforced thermoplastic wire. Such wires, in addition to achieving more flexibility in manufacture and repair, provide improved fatigue strength, impact resistance and resistance to chemical attack. The greatest barrier to the use of high strength organic fiber reinforced plastic (FRP) wires in critical structural applications is high cost and large uncertainties associated with the quality of the product. Nearly 100% ultrasonic or other NDT is required to assure quality. In contrast, metal wires are produced by the mile and accepted on the basis of simple tests on a small sample. The quality of the metal wire is assured by closely controlling the chemistry and by utilizing a very reproducible manufacturing process. The PI proposes a similar concept for producing fiber reinforced wires. The following procedure is used. Yarns of reinforced fibers and the matrix are commingled in proper proportion to control the fiber/resin ratio. The mixture is then heated close to the melting point of the matrix and pulled through a hot die. The wire is cooled at a rate appropriate to achieving the desired degree of crystallinity in the matrix. Wires produced by this method have many applications. Chief among them are mooring lines for deep ocean arrays of instruments.