Property Analysis of Photo-Polymerization-Type 3D-Printed Structures Based on Multi-Composite Materials

Additive manufacturing, commonly called 3D printing, has been studied extensively because it can be used to fabricate complex structures; however, polymer-based 3D printing has limitations in terms of implementing certain functionalities, so it is limited in the production of conceptual prototypes....

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Bibliographic Details
Published inApplied sciences Vol. 11; no. 18; p. 8545
Main Authors Hwang, So-Ree, Park, Min-Soo
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.09.2021
Subjects
3-D printers
3D printing
additive manufacturing
Composite materials
Fabrication
Grippers
laminar composite
Light
Mechanical properties
Methods
multi-composite materials
photo-polymerization
photochromic
Photopolymerization
Physical properties
Polymer matrix composites
Polymerization
Polymers
Printing
Prototypes
Resins
Sedimentation & deposition
Separators
Three dimensional composites
Ultraviolet radiation
Taiwan
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Summary:Additive manufacturing, commonly called 3D printing, has been studied extensively because it can be used to fabricate complex structures; however, polymer-based 3D printing has limitations in terms of implementing certain functionalities, so it is limited in the production of conceptual prototypes. As such, polymer-based composites and multi-material 3D printing are being studied as alternatives. In this study, a DLP 3D printer capable of printing multiple composite materials was fabricated using a movable separator and structures with various properties were fabricated by selectively printing two composite materials. After the specimen was fabricated based on the ASTM, the basic mechanical properties of the structure were compared through a 3-point bending test and a ball rebound test. Through this, it was shown that structures with various mechanical properties can be fabricated using the proposed movable-separator-based DLP process. In addition, it was shown that this process can be used to fabricate anisotropic structures, whose properties vary depending on the direction of the force applied to the structure. By fabricating multi-joint grippers with varying levels of flexibility, it was shown that the proposed process can be applied in the fabrication of soft robots as well.
ISSN:2076-3417
2076-3417
DOI:10.3390/app11188545