Rheology and Processing of UV‐Curable Textured Alumina Inks for Additive Manufacturing

2021 ◽  
Author(s):  
Andrew Rosenberger ◽  
Nicholas Ku ◽  
Lionel Vargas‐Gonzalez ◽  
Mustafa Alazzawi ◽  
Richard Habe
Keyword(s):  
Additive Manufacturing ◽  
Uv Curable

Development of UV-curable ZrO2 slurries for additive manufacturing (LCM-DLP) technology

2019 ◽  
Vol 39 (13) ◽  
pp. 3797-3803 ◽  
Author(s):  
Mario Borlaf ◽  
Albert Serra-Capdevila ◽  
Carles Colominas ◽  
Thomas Graule
Keyword(s):  
Additive Manufacturing ◽  
Uv Curable

3-D Antenna Structures Using Novel Direct-Write Additive Manufacturing Method

2015 ◽  
Author(s):  
Md Taibur Rahman ◽  
Rahul Panat ◽  
Deuk Heo
Keyword(s):  
Additive Manufacturing ◽  
Data Transfer ◽  
Direct Write ◽  
Form Complex ◽  
Uv Curable ◽  
Manufacturing Method ◽  
Critical Elements ◽  
New Class ◽  
Novel Method ◽  
Thermal Sintering

Sub-mm wavelength 3-D antennas are emerging as critical elements for ultrafast data transfer for various applications. The inherent 2-D nature of lithographic processes severely limits the available manufacturing routes to fabricate such antennas. In this work, we demonstrate a novel additive manufacturing method to fabricate 3-D metal-dielectric antenna structures at sub-mm length scale. A UV curable dielectric is dispensed from an Aerosol Jet system and instantaneously cured to form complex 3-D shapes. A metal nano particle ink is then dispensed over the 3-D dielectric, also by the Aerosol Jet technique, followed by thermal sintering. This novel method opens up the possibility of fabricating an entirely new class of 3-D antenna structures at sub-mm length scales.

Sustainable near UV-curable acrylates based on natural phenolics for stereolithography 3D printing

2019 ◽  
Vol 10 (9) ◽  
pp. 1067-1077 ◽  
Author(s):  
Rui Ding ◽  
Yuyang Du ◽  
Rebecca B. Goncalves ◽  
Lorraine F. Francis ◽  
Theresa M. Reineke
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Uv Curable ◽  
Wide Range

Photocured polymers have recently gained tremendous interest for a wide range of applications especially industrial prototyping/additive manufacturing. This work aims to develop natural phenolic-based (meth)acrylates to expand the use of sustainable and mechanically robust 3D printable formulations.

scholarly journals ВПЛИВ ПАРАМЕТРІВ АДИТИВНОГО ВИРОБНИЦТВА НА ВЛАСТИВОСТІ ВИРОБІВ З ФОТОПОЛІМЕРУ

2022 ◽  
pp. 81-87
Author(s):  
ALEKSANDR SLIEPTSOV ◽  
RUSLAN ISKANDAROV ◽  
IGOR SLIEPTSOV ◽  
VYACHESLAV KOBZA
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Additive Manufacturing ◽  
Impact Strength ◽  
Manufacturing Process ◽  
Uv Light ◽  
Post Treatment ◽  
Uv Curable ◽  
Forming Parameters ◽  
Manufacturing Parameters

Purpose. Study of the influence of additive manufacturing parameters and post forming operations on complex mechanical properties of the articles formed from UV curable acrylic oligomer. Methodology. Determination of physical and mechanical properties of standard samples which was formed by additive manufacturing technics from UV curable polymer. Tensile strength and relative elongation at brake according to ISO 527-2:2012, impact strength according to: ISO 179-1:2010. Durometer hardness according to:ISO 2039-1:2001. Bending modulus according to: ISO 178:2010. Density according to: ISO 1183-1:2019Findings. Additive manufacturing parameters for stereolithography process was studied for liquid UV curable acrylic oligomer. Study was focused on influence of forming settings and post forming treatment of complex mechanical properties of final articles which was shaped as standard testing samples. Properties of additive manufactured samples was compared with the properties of samples which was cured by UV light is bulk inside shaped cavity with the same geometrical dimensions. Correct post forming treatment results in up to 2 – 3 times increase in tensile strength. Post forming treatment is necessary for achieving functional level of mechanical properties, comparable to the properties of typical industrial polymers. Study of influence of UV light exposure during additive manufacturing shows double fold increase in tensile strength but reduce overall forming speed. Impact strength increase with increasing exposure time and significantly increase with duration of post forming treatment. Post treatment operations with correct parameters can result in forming articles with level of properties sufficient for functional applications. Originality. Study was focused on mechanical properties of UV curable polymer in dependence from forming parameters of additive manufacturing process and post treatment operations. Application of correct post forming setting can lead to material properties with valuable for functional applications.Practical value Optimal parameters for additive manufacturing process based on UV curable resin and LCD exposure technology was investigated. Forming and post forming parameters significantly influence complex mechanical properties of formed articles.

Nano‐silica modification of UV‐curable EVA resin for additive manufacturing

2020 ◽  
Vol 60 (7) ◽  
pp. 1579-1587
Author(s):  
Hanyu Xue ◽  
Yuansong Ye ◽  
Xinzhong Li ◽  
Jianrong Xia ◽  
Qi Lin
Keyword(s):  
Additive Manufacturing ◽  
Nano Silica ◽  
Uv Curable ◽  
Silica Modification

A Novel Multimaterial Additive Manufacturing Technique for Fabricating Laminated Polymer Nanocomposite Structures

2015 ◽  
Vol 3 (1) ◽  
Author(s):  
Clayson C. Spackman ◽  
Kyle C. Picha ◽  
Garrett J. Gross ◽  
James F. Nowak ◽  
Philip J. Smith ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Dimensional Accuracy ◽  
Polymer Nanocomposite ◽  
Underlying Mechanism ◽  
Electrospinning Process ◽  
Fiber Mats ◽  
Uv Curable ◽  
Manufacturing Technique ◽  
Nanocomposite Structures

The objective of this research is to develop a novel, multimaterial additive manufacturing technique for fabricating laminated polymer nanocomposite structures that have characteristic length-scales in the tens of millimeters range. The three-dimensional (3D) printing technology presented in this paper combines the conventional inkjet-based printing of ultraviolet (UV) curable polymers with the deposition of either aligned or random nanoscale fiber mats, in between each printed layer. The fibers are first generated using an electrospinning process that produces the roll of fibers. These fibers are then transferred to the part being manufactured using a stamping operation. The process has been proven to manufacture multimaterial laminated nanocomposites having different 3D geometries. The dimensional accuracy of the parts is seen to be a function of the interaction between the different UV-curable polymer inks. In general, the addition of the nanofibers in the form of laminates is seen to improve the mechanical properties of the material, with the Young’s modulus and the ultimate breaking stress showing the most improvement. The pinning and deflection of microcracks by the nanoscale fiber mats has been identified to be the underlying mechanism responsible for these improved mechanical properties. The thermogravimetric analysis (TGA) reveals that these improvements in the mechanical properties are obtained without drastically altering the thermal degradation pattern of the base polymer.

Fabrication of Dense Silica Ceramics through a Stereo Lithography-Based Additive Manufacturing

2018 ◽  
Vol 281 ◽  
pp. 456-462
Author(s):  
Ying Ying Wang ◽  
Ling Li ◽  
Zai Yi Wang ◽  
Fu Tian Liu ◽  
Jia Hui Zhao ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Ball Milling ◽  
Milling Time ◽  
Solid Loading ◽  
Uv Curable ◽  
Additive Content ◽  
Low Viscosity ◽  
Dispersion State ◽  
Silica Slurry ◽  
Ball Milling Time

Silica ceramics were fabricated via an additive manufacturing process based on stereolithography. Ceramic suspension with low viscosity and high solid loading is of importance to stereolithography based UV-curable. In this work, to meet the requirements of stereolithography, effects of temperature, additive content and ball-milling time on the viscosity of silica slurry were investigated, and properties of silica ceramics sintered at different temperature were also researched.The results show that increasing temperatures strongly decrease the viscosity unless when the temperature is above 70°C. The minimum of viscosity was observed for an appropriate addition of dispersant, which is corresponding to the best dispersion state of silica particles in the photopolymerizable monomer. And optimizing ball-milling time showed the lowest viscosity suitable for the stereolithography process. The appropriate temperature, additive content and ball-milling time facilitating stereolithography was 70°C, 2% and 60min respectively. The prepared ceramics sintered at 1220°C showed a density and flexural strength of 1.57g/cm3 and 13.31MPa respectively.

A Novel Multi-Material Additive Manufacturing Technique for Fabricating Laminated Polymer Nanocomposite Structures

2014 ◽  
Author(s):  
Clayson Spackman ◽  
Kyle Picha ◽  
Garrett G. Gross ◽  
James F. Nowak ◽  
Phil J. Smith ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Dimensional Accuracy ◽  
Polymer Nanocomposite ◽  
Underlying Mechanism ◽  
Electrospinning Process ◽  
Fiber Mats ◽  
Uv Curable ◽  
Manufacturing Technique ◽  
Nano Scale

The objective of this research is to develop a novel, multi-material additive manufacturing technique for fabricating laminated polymer nancomposite structures that have characteristic length-scales in the tens of millimeters range. The 3D printing technology presented in this paper combines the conventional inkjet-based printing of ultraviolet (UV) curable polymers with the deposition of either aligned or random nano-scale fiber mats, in between each printed layer. The fibers are first generated using an electrospinning process that produces the roll of fibers. These fibers are then transferred to the part being manufactured using a stamping operation. The process has been proven to manufacture multi-material laminated nanocomposites having different 3D geometries. The dimensional accuracy of the parts is seen to be a function of the interaction between the different UV-curable polymer inks. In general, the addition of the nanofibers in the form of laminates is seen to improve the mechanical properties of the material, with the Young’s modulus and the ultimate breaking stress showing the most improvement. The pinning and deflection of micro-cracks by the nano-scale fiber mats has been identified to be the underlying mechanism responsible for these improved mechanical properties. The thermogravimetric analysis reveals that these improvements in the mechanical properties are obtained without drastically altering the thermal degradation pattern of the base polymer.

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