Several chemical properties which influence the printability for fused filament fabrication 3D‐printing are derived from analyses of commercially available filaments. In preliminary experiments, polymerization conditions are optimized and suitable monomers and selectivity control agents (donors) are selected. An experimental series in which propene is copolymerized with the comonomers 1‐butene and 1‐hexene with an industrial Ziegler–Natta catalyst will be discussed here. The experiments are planned using design of experiments. Based on a split‐plot design, the design is adapted for mixtures and the combination of homo‐ and copolymerization. The observed factors, besides the mixture composition, are hydrogen partial pressure and the amount of donor. The obtained polymers are analyzed by means of high‐temperature size exclusion chromatography, differential scanning calorimetry, and rheology. 1‐Butene copolymers show good printing results and promising properties almost matching the desired ones. The targeted polymer properties are achieved within certain limits. 1‐Hexene copolymers result in lower molecular masses while crystallinity remains slightly higher, which does not match with the desired profile. Beneficial properties are likely to be achieved within a wider factor range, for example, higher comonomer amount and lower hydrogen partial pressure.

中文翻译：

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设计用于熔融长丝制造3D打印的聚丙烯共聚物

影响熔融丝制造3D打印可印刷性的几种化学性质来自对市售丝的分析。在初步实验中，优化了聚合条件，并选择了合适的单体和选择性控制剂（供体）。这里将讨论一个实验系列，其中丙烯与工业齐格勒-纳塔催化剂一起与共聚单体1-丁烯和1-己烯共聚。使用实验设计来计划实验。基于剖分设计，该设计适用于均聚物和共聚的混合物以及混合物。除混合物组成外，观察到的因素还有氢分压和施主量。所得聚合物通过高温尺寸排阻色谱法进行分析，差示扫描量热法和流变学。1-丁烯共聚物显示出良好的印刷效果，并具有与所需共聚物几乎匹配的良好性能。在一定范围内实现了目标聚合物的性能。1-己烯共聚物导致较低的分子量，而结晶度仍保持较高，这与所需的特性不符。在更宽的因子范围内，例如更高的共聚单体量和更低的氢分压，可能会获得有益的性能。与所需的配置文件不匹配。在更宽的因子范围内，例如更高的共聚单体量和更低的氢分压，可能会获得有益的性能。与所需的配置文件不匹配。在更宽的因子范围内，例如更高的共聚单体量和更低的氢分压，可能会获得有益的性能。