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

UV-Curable Organic-Inorganic Hybrid Films Based on Epoxynorbornene Linseed Oils

2011 ◽  
Vol 217-218 ◽  
pp. 294-299
Author(s):  
Jian Yun He ◽  
Jin Ping Xiong ◽  
Bing Qian Xia
Keyword(s):  
Linseed Oil ◽  
Silica Content ◽  
Coating Properties ◽  
Hybrid Films ◽  
Nano Silica ◽  
Pencil Hardness ◽  
Uv Curable ◽  
Inorganic Hybrid ◽  
Silica Coatings ◽  
Wetting Properties

Epoxynorbornene linseed oil (ENLO) is a new kind of epoxide from renewable sources. An UV-curable organic/inorganic hybrid films using epoxynorbornene linseed oils (ENLO) and surface treated nano-silica were formulated. The mechanical properties，thermal properties and coating properties of the ENLO /silica coatings were evaluated as the function of nano-silica content. The results indicated that after incorporating the nano-silica, the strength, modulus and glass transition temperature of the hybrid films enhanced, while the elongation at break decreased. The nano-silica also improved the hybrid coating properties such as pencil hardness, solvent resistance and surface wetting properties. The morphology observation of the films by atomic force microscopy (AFM) showed that the average silica particle size was ~ 70 nm and the particles were well-dispersed in the organic phase.

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

scholarly journals Preparation and Performance of a Waterborne UV/Al Low Infrared Emissivity Coating

2020 ◽  
Vol 10 (18) ◽  
pp. 6423 ◽  
Author(s):  
Xiaoxing Yan ◽  
Lin Wang
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Orthogonal Experiment ◽  
Uv Curing ◽  
Infrared Emissivity ◽  
Nano Silica ◽  
Uv Curable ◽  
Powder Concentration ◽  
Al Powder ◽  
Silica Slurry

An Al powder filler, nano silica slurry and KH560 were mixed with a prepared waterborne UV-curable coating, and the coating was optimized by an orthogonal experiment. Influences of the Al powder concentration on the gloss, infrared emissivity, brightness, mechanical properties, corrosion resistance and other related properties of the coating were further discussed. The results show that the influence of the Al powder concentration on the gloss was more significant, followed by the UV curing time and nano silica slurry concentration. After studying the key role of the concentration of the Al powder, we found that as the concentration of the Al powder is augmented from 10.0% to 25.0%, the gloss lessened from 19.1% to 8.5%. As the concentration of the Al powder was augmented from 10.0% to 40.0%, the infrared emissivity lessened from 0.649 to 0.083 and the brightness L’ value of the coating was step-by-step augmented and inclined to be stable; in addition, the coating’s mechanical properties reached an excellent level. The coating containing 25.0% Al powder had the best corrosion resistance, surface morphology and comprehensive properties, which can potentially be used for infrared stealth technology.

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.

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

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.

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.

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