Abstract This study explores the 3D printability of a new material based on silicone and hemp fibers from renewable, sustainable and non-petroleum resources with the aim of enhancing mechanical properties of silicone. Incorporation of fibers improved the mechanical properties of the silicone matrix, but it also adversely affected the printability of silicone due to the high viscosity. Therefore, an additional solvent is added into the composition to alter the viscosity. To mature the composite printing technology, this research aims to find out the desired mixing composition of silicone, hemp fiber, and solvent. The behavior of the new engineered material was analyzed using rheological study to obtain a printable material. The composition containing 15 wt% hemp fibers and 20 wt% solvent with enhanced mechanical properties displayed the desirable printability. Moreover, the mechanical properties of the 3D printed and molded samples were studied. The results revealed that 3D printed samples outperformed the molded counterparts. Finally, a honeycomb structure and a simple gripper were fabricated to demonstrate the application of the developed material.

中文翻译：

---

用大麻纤维增强有机硅用于增材制造

摘要 本研究探索了一种基于来自可再生、可持续和非石油资源的有机硅和大麻纤维的新材料的 3D 可打印性，旨在提高有机硅的机械性能。纤维的掺入改善了有机硅基质的机械性能，但由于高粘度，它也对有机硅的可印刷性产生了不利影响。因此，将额外的溶剂加入到组合物中以改变粘度。为了使复合印刷技术成熟，本研究旨在找出所需的有机硅、大麻纤维和溶剂的混合成分。使用流变学研究分析新工程材料的行为以获得可印刷材料。含有 15%（重量）大麻纤维和 20%（重量）溶剂的组合物具有增强的机械性能，显示出所需的可印刷性。此外，还研究了 3D 打印和模制样品的机械性能。结果表明，3D 打印样品的性能优于模制样品。最后，制造了一个蜂窝结构和一个简单的夹具，以展示所开发材料的应用。