A groundbreaking study has emerged from the State Key Laboratory of Solid Lubrication at the Lanzhou Institute of Chemical Physics, revealing a significant advancement in the 3D printing of silicone rubber (SR). This innovative approach, developed by lead author Zhongying Ji and his team, leverages vat photopolymerization to create complex structures with unprecedented precision and stability. This research could have far-reaching implications, particularly for the construction sector, where the demand for versatile and durable materials is ever-increasing.
Traditionally, silicone rubber has been limited by conventional molding techniques that often fall short in terms of efficiency and accuracy. As Ji noted, “The limitations of existing methods have prevented the widespread adoption of silicone rubber in advanced applications. Our new SR-based ink not only simplifies the process but also enhances the capabilities of 3D printing.” By utilizing a multi-thiol monomer, the team has crafted an ink that allows for the one-step fabrication of intricate designs, pushing the boundaries of what is possible in additive manufacturing.
The mechanical properties of the newly developed SR-20 are impressive, showcasing a tensile stress of 1.96 MPa, an elongation at break of 487.9%, and an elastic modulus of 225.4 kPa. These characteristics are crucial for applications that require flexibility and resilience, such as soft actuators and robotics. The material’s ability to withstand harsh solvents and extreme temperatures—from −50 °C to 180 °C—further underscores its potential for long-term use in various environments.
In practical applications, the research team demonstrated the technology by fabricating soft pneumatic actuators and grippers in a single step. This capability not only streamlines production but also allows for innovative designs that can be easily assembled, marking a significant leap forward in the design and functionality of soft robotics. “This technology opens up new avenues for construction and engineering, enabling the creation of customized components that were previously difficult to manufacture,” Ji explained.
The implications for the construction industry are profound. As the sector increasingly adopts 3D printing technologies, the ability to produce high-performance silicone rubber components could revolutionize the design of everything from flexible electronics integrated into smart buildings to advanced soft robotic systems for construction tasks. The potential for on-site fabrication of specialized parts could lead to reduced waste and lower costs, all while enhancing the overall efficiency of construction projects.
Published in the ‘International Journal of Extreme Manufacturing’, this research not only paves the way for future developments in 3D printing but also highlights the growing intersection of material science and engineering. As the construction industry continues to evolve, innovations like those presented by Ji and his team will likely play a pivotal role in shaping the future of building practices. For further details on this research, you can visit lead_author_affiliation.