Solid‐state shear pulverization (SSSP) is a continuous polymer processing methodology based on a modified twin‐screw extruder. The unique application of low barrel temperatures and mechanochemistry has contributed to the development of an extensive range of polymer‐based materials, from environmentally responsible polymer blends to nanocomposites, for more than 30 years. The complex processing‐structure‐processing relationships in SSSP can be elucidated by way of integrated, measured covariants that capture the interplay between numerous processing parameters. Residence time distribution and specific mechanical energy are evaluated in a base case polypropylene (PP) study under a full factorial experiment involving screw design, screw speed, and throughput parameters. These factors are in turn correlated to dispersion morphology and thermal property results from a parallel study based on a model PP/carbon black composite. This investigation highlights the tunability of SSSP processing parameters for tailored output with desired purposes and applications. In particular, enhanced residence distribution can be achieved with low screw speed and high throughput settings, leading to high levels of material mixing and shear. POLYM. ENG. SCI., 60:503–511, 2020. © 2019 Society of Plastics Engineers

中文翻译：

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固态剪切粉中的停留时间分布和比机械能：冷冻挤出机中的加工-结构-性能关系

固态剪切粉碎（SSSP）是基于改进的双螺杆挤出机的连续聚合物加工方法。30多年来，低料筒温度和机械化学的独特应用推动了多种聚合物材料的开发，从对环境负责的聚合物共混物到纳米复合材料。SSSP中复杂的处理结构与处理之间的关系可以通过集成的，测量的协变量来阐明，这些协变量捕获了众多处理参数之间的相互作用。在基础案例聚丙烯（PP）研究中，在涉及螺杆设计，螺杆速度和通过量参数的全因子实验下，评估了停留时间分布和比机械能。这些因素又与基于模型PP /炭黑复合材料的平行研究的分散形态和热性能相关。这项研究着重说明了SSSP处理参数针对具有预期目的和应用的量身定制输出的可调性。特别地，可以通过低螺杆速度和高产量设置来实现增强的居住分布，从而导致高水平的材料混合和剪切。POLYM。ENG。SCI。，60：503–511，2020.©2019塑料工程师协会 导致高水平的物料混合和剪切。POLYM。ENG。SCI。，60：503–511，2020.©2019塑料工程师协会 导致高水平的物料混合和剪切。POLYM。ENG。SCI。，60：503–511，2020.©2019塑料工程师协会