Results of experimental investigation of mechanical characteristics of ULTEM 9085 thermoplastic, produced by additive manufacturing, i.e., the method of layer-by-layer application of a molten polymer thread, are presented. Flat specimens were tensile tested within the temperature range of (–40) –150°C. Temperature dependencies of ultimate strength, relative elongation at break, elastic modulus, and Poisson’s ratio are obtained. At a temperature of –40°C, the linear sections of diagrams obtained for various specimens coincide; in the area of elastoplastic deformations, their discrepancy is noted. This caused small variations in elastic characteristics and significant ones in strength and relative elongation at break. Similar features of deformation diagrams were also obtained at a temperature of 50°C. However, at 150°C, tensile diagrams do not coincide even in the area of small elastic deformations; their specific bends are noted. Specimens are fractured by the normal separation mechanism at all temperatures. When the temperature changes from –40 to 150°C, thermoplastic ultimate strength almost linearly decreases; at 150°C it is 26% of the initial value at –40 °C. As temperature increases within the specified range, the relative elongation at break monotonously decreases more than twice (2.9–1.3%). The elastic modulus changes insignificantly within a temperature range of (–40)–20°C; when the temperature rises to 150°C, it decreases to 64% of the value at –40 °C. Poisson’s ratio virtually does not change and is in the range of 0.36–0.37.

中文翻译：

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温度对添加剂技术生产的ULTEM 9085热塑性塑料机械性能的影响

呈现了通过增材制造（即，熔融聚合物线的逐层施加方法）生产的ULTEM 9085热塑性塑料机械特性的实验研究结果。扁平样品在（–40）–150°C的温度范围内进行了拉伸测试。得到极限强度，相对断裂伸长率，弹性模量和泊松比的温度依赖性。在–40°C的温度下，从各种样品获得的图表的线性截面是重合的；在弹塑性变形方面，存在差异。这导致弹性特征的微小变化，而强度和相对断裂伸长率的差异较大。在50℃的温度下也获得了变形图的相似特征。但是，在150°C下，甚至在很小的弹性变形区域，拉伸图也不重合。注意它们的特定弯曲。在所有温度下，样品均会通过正常的分离机制破裂。当温度从–40变为150°C时，热塑性塑料的极限强度几乎呈线性下降；在150°C下，它是–40°C下初始值的26％。当温度在指定范围内升高时，相对断裂伸长率单调降低两倍以上（2.9–1.3％）。在（–40）–20°C的温度范围内，弹性模量的变化很小。当温度上升到150°C时，温度降低到–40°C时的温度的64％。泊松比实际上没有变化，在0.36-0.37的范围内。在所有温度下，样品均会通过正常的分离机制破裂。当温度从–40变为150°C时，热塑性塑料的极限强度几乎呈线性下降；在150°C下，它是–40°C下初始值的26％。当温度在指定范围内升高时，相对断裂伸长率单调降低两倍以上（2.9–1.3％）。在（–40）–20°C的温度范围内，弹性模量的变化很小。当温度上升到150°C时，温度降低到–40°C时的温度的64％。泊松比实际上没有变化，在0.36-0.37的范围内。在所有温度下，样品均会通过正常的分离机制破裂。当温度从–40变为150°C时，热塑性塑料的极限强度几乎呈线性下降；在150°C下，它是–40°C下初始值的26％。当温度在指定范围内升高时，相对断裂伸长率单调降低两倍以上（2.9–1.3％）。在（–40）–20°C的温度范围内，弹性模量的变化很小。当温度上升到150°C时，温度降低到–40°C时的温度的64％。泊松比实际上没有变化，在0.36-0.37的范围内。当温度在指定范围内升高时，相对断裂伸长率单调降低两倍以上（2.9–1.3％）。在（–40）–20°C的温度范围内，弹性模量的变化很小。当温度上升到150°C时，温度降低到–40°C时的温度的64％。泊松比实际上没有变化，在0.36-0.37的范围内。当温度在指定范围内升高时，相对断裂伸长率单调降低两倍以上（2.9–1.3％）。在（–40）–20°C的温度范围内，弹性模量的变化很小。当温度升至150°C时，温度降低至–40°C时的温度值的64％。泊松比实际上没有变化，在0.36-0.37的范围内。