High temperature PEEK 3D printingThe machine is gradually applied in the field of scientific research.
With the rise of the Internet of Things and smart manufacturing, smart structures have received extensive attention and rapid development. Smart structure, as the name implies, integrates structure and sensing, can sense the information and state of the object under test, and convert physical quantities into measurable electrical signals.3D printingTechnology is a kind of additive manufacturing technology, which has broad application prospects in manufacturing complex structural parts and customized production.Fused Deposition Molding (FDM) is a typical continuous layer-stacking molding based on molten thermoplastic material3D printingThe method is widely used in medical, automotive, aerospace, oil and gas industries.
The CAS-Key Laboratory of Space Manufacturing Technology (SMT) recently published a laser-induced graphene technology on ACS Applied Materials & Interfaces (2020, 12, 3, 3928-3935). In polyether ether ketone (PEEK)3D printingThe method of introducing a conductive sensing circuit into the surface of the piece is used to manufacture smart structural pieces.
The research team used the early-stage polyether ether ketone (PEEK) material3D printingThe basis of (Polymers, 2019, 11, 656). The PEEK structure printed by INTAMSYS FUNMAT HT is processed by a CO2 laser with a wavelength of 10.6 μm. A PEEK-based laser-induced graphene (PEEK-LIG, Laser Induced Graphene) with dual functions of conduction and sensing is obtained. Through further processing, a smart structure is obtained (Figure 1). The intelligent structural part can be applied in a variety of scenarios, has the advantages of excellent mechanical properties, high sensitivity, high stability, etc., and its preparation method is simple and low in cost.
Figure 1 Construction method and test characterization of PEEK-LIG smart structure
Corresponding mechanical performance tests show that the PEEK-LIG structure prepared by this method can maintain high sensing sensitivity within a certain range of tensile and bending deformation. In order to test the sensing performance of PEEK-LIG structural parts in different environments, the researchers conducted underwater functional tests. The results showed that PEEK-LIG structural parts can still maintain a fast response speed and recovery speed in water, Application potential in the environment.
Figure 2 Structure and strain sensing performance test of PEEK-LIG smart structural parts
Figure 3 Water resistance test and working mechanism of PEEK-LIG smart structural parts
3D printingThe combination of technology and laser-induced graphene technology reduces the cost of manufacturing smart structural parts and enriches application scenarios. Researchers use FUNMAT HT to manufacture PEEK gears, and use laser-induced graphene technology to manufacture sensing structures on the gear teeth to realize the detection and judgment of gear wear. It is worth mentioning that this method has wide applicability, because most polymer materials can be used to produce graphene structures.
Figure 4 PEEK-LIG smart gear and its working status
FUNMAT-HT has an advanced heating function design (90℃ chamber temperature, 450℃ nozzle temperature), and can print more than 20 kinds of functional materials. Including PEEK, PEKK, ULTEM (PEI), PPSU and other high-performance functional materials, as well as PC, PA, PA-CF, ABS and other engineering materials.
In 2019, Yuanzhu Intelligent released the FUNMAT PRO 410 intelligent high-temperature dual-nozzle 3D printer, which can print structural parts with a maximum size of 305 x 305 x 406 mm, which can achieve high-speed and high-precision printing, which further caters to the research institute’s stable rapid prototyping Demand for 3D printers.
Yuanzhu Intelligent FUNMAT PRO 410
If you want to know the details of the research, please click on the original link
https://pubs.acs.org/doi/10.1021/acsami.9b17467
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