Carbon nanotubes as light absorbers in digital light processing three-dimensional printing of SiCN ceramics from preceramic polysilazane

RoM, as a reinforcement theory of composite materials, has been widely used. With the advent of new materials and molding processes, this theory is constantly being refined and validated. In this paper, four high-tech fibers as continuous reinforcing materials and carbon nanotubes as non-continuous reinforcing materials were evaluated, and two ideal composite samples were designed using three-dimensional printing technology. The reliability of RoM was verified by tensile testing. Also, a fiber tensile fixture was designed. The fiber bundle strength was inversely proportional to the length and the number of roots of fiber. In verifying the RoM, three-dimensional printing was employed, showing the diversity and complexity of the testing samples.

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Digital Light Processing Based Three-dimensional Printing for Medical Applications

International Journal of Bioprinting ◽

10.18063/ijb.v6i1.242 ◽

2019 ◽

Vol 6 (1) ◽

pp. 1 ◽

Cited By ~ 5

Author(s):

Jiumeng Zhang ◽

Qipeng Hu ◽

Shuai Wang ◽

Jie Tao ◽

Maling Gou

Keyword(s):

3D Printing ◽

Clinical Medicine ◽

Scale Up ◽

Three Dimensional ◽

Biological Research ◽

Printing Technology ◽

Digital Light Processing ◽

Three Dimensional Printing ◽

Dimensional Printing ◽

Potential Tool

An additive manufacturing technology based on projection light, digital light processing (DLP) 3D printing, has been widely applied in the field of medical products production and development. The precision projection light, reflected by a million pixels instead of a focused point, provides this technology both printing accuracy and printing speed. In particular, this printing technology provides a relatively milder condition to cells due to its non-direct contact. This review introduces the DLP-based 3D printing technology and its applications in medicine, including precise medical devices, functionalized artificial tissues and specific drug delivery systems. The products are particularly discussed for their significance for medicine. We believe that this technology provides a potential tool for biological research and clinical medicine, while challenges of scale-up and regulatory approval are also discussed.

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Fabrication of Conducting Polyacrylate Resin Solution with Polyaniline Nanofiber and Graphene for Conductive 3D Printing Application

Polymers ◽

10.3390/polym10091003 ◽

2018 ◽

Vol 10 (9) ◽

pp. 1003 ◽

Cited By ~ 6

Author(s):

Hoseong Han ◽

Sunghun Cho

Keyword(s):

3D Printing ◽

Three Dimensional ◽

Optical Microscope ◽

Graphene Sheets ◽

Digital Light Processing ◽

Three Dimensional Printing ◽

Resin Solution ◽

Light Curing ◽

Dimensional Printing ◽

Printing Time

Three-dimensional printing based on the digital light processing (DLP) method offers solution processability, fast printing time, and high-quality printing through selective light curing of photopolymers. This research relates to a method of dispersing polyaniline nanofibers (PANI NFs) and graphene sheets in a polyacrylate resin solution for optimizing the conductive solution suitable for DLP-type 3D printing. Dispersion and morphology of the samples with different filler contents were investigated by field emission scanning electron microscope (FE-SEM) and optical microscope (OM) analyses. The polyacrylate composite solution employing the PANI NFs and graphene was printed well with various shapes and sizes through the 3D printing of DLP technology. In addition, the electrical properties of the printed sculptures have been investigated using a 4-point probe measurement system. The printed sculpture containing the PANI NFs and graphene sheets exhibited electrical conductivity (4.00 × 10−9 S/cm) up to 107 times higher than the pure polyacrylate (1.1 × 10−16 S/cm). This work suggests potential application of the PANI NF/graphene cofiller system for DLP-type 3D printing.

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