Diaz Armas Nathalia, Bhandari Geet, Kodra Stiven, Zhang Jinde, Kazmer David, Mead Joey
Department of Plastics Engineering, University of Massachusetts Lowell, Lowell, MA 01854, USA.
Polymers (Basel). 2025 Jun 28;17(13):1800. doi: 10.3390/polym17131800.
This work investigated the 3D printing of fully compounded thermoset elastomers using a custom-designed printer capable of processing both thermoplastics and elastomers containing fillers and specific cure packages. The adhesion strength between selected thermoset elastomers and thermoplastic combinations was studied, and the influence of key process parameters on adhesion was evaluated. The results showed that interfacial bonding was favored by the proximity of solubility parameters, the amorphous morphology of the thermoplastic, and increased chain mobility at the processing temperature. Rubber processing parameters significantly influenced adhesion, showing that curing at a lower temperature for a longer duration yielded better results than shorter, higher-temperature cures. Elemental analysis revealed the presence of rubber-specific components on the thermoplastic surface, suggesting interfacial migration. These findings contribute to advancing multi-material 3D printing by enabling the integration of rubber-like materials with thermoplastics, expanding opportunities for applications in high-temperature and chemically demanding environments.
这项工作使用一台定制设计的打印机研究了全复合热固性弹性体的3D打印，该打印机能够处理含有填料和特定固化包的热塑性塑料和弹性体。研究了所选热固性弹性体与热塑性塑料组合之间的粘附强度，并评估了关键工艺参数对粘附的影响。结果表明，溶解度参数相近、热塑性塑料的无定形形态以及加工温度下链迁移率的增加有利于界面结合。橡胶加工参数对粘附力有显著影响，表明在较低温度下长时间固化比短时间、高温固化产生更好的效果。元素分析揭示了热塑性塑料表面存在橡胶特定成分，表明存在界面迁移。这些发现通过使橡胶状材料与热塑性塑料集成，有助于推进多材料3D打印，扩大在高温和化学要求苛刻环境中的应用机会。
