Cure Behavior, Morphology and Dielectric Constant of Flexible Epoxy Composite with Cu Particle, SWCNT and MWCNT Nanoparticle by UV-Cure Technique
Abstract
The flexible epoxy cured by UV light source at room temperature using LED UV lamp was determined. The hybrid system of epoxy between photo-initiator and thermal curing agent was used for observing the cure behavior of epoxy and epoxy composites in UV-Cure system. The remained epoxy functional group after curing by UV light was determined by differential scanning calorimetry (DSC). Moreover, the UV-Visible spectrophotometry was used as another method to confirm and support the cure behavior of neat epoxy and epoxy composites. The morphology was evaluated by scanning electron microscopy (SEM) to reveal the cross sectional surface of specimen after mixing under atmospheric pressure and curing with UV light. Furthermore, the dielectric constant of neat epoxy and epoxy composites were measured by LCR meter at 1 kHz of frequency. It was found from this work that neat epoxy could be cured under UV light at 2-3 hours while epoxy composites would be cured at longer time than neat epoxy due to the effect of particle in epoxy matrix. The dielectric constant of epoxy composite with single wall carbon nanotube (SWCNT) at 1 phr showed the highest value among epoxy composites in this work. This might be due to the different morphology of epoxy composites and structure of SWCNT in epoxy composites from high surface area and bubble inside during processing. Keywords : epoxy, copper, carbon nanotube, UV-cure, dielectric constantReferences
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Sangermano, M., Periolatto, M., Signore, V., & Spena, P. R. (2017). Improvement of the water-vapor barrier
properties of an UV-cured epoxy coating containing graphite oxide nanoplatelets. Progress in Organic
Coatings, 103, 152-155.
Sangermano, M., Roppolo, I., Camara, V. H. A., Dizman, C., Ates, S., Torun, L. (2011). Polysulfone/Metal
Nanocomposites by Simultaneous Photoinduced Crosslinking and Redox Reaction. Macromolecular
Materials and Engineering, 296(9), 820-825.
Sharif, M., Pourabbas, B., Sangermano, M., Moghadam, F. S., Mohammadi, M., Roppolo, I. (2017). The
effect of graphene oxide on UV curing kinetics and properties of SU8 nanocomposites. Polymer
International, 66(3), 405-417.
Zhou, J. P., Jia, S. J., Fu, W. L., Liu, Z. L., & Tan, Z. Y. (2016). Fast curing of thick components of epoxy via
modified UV-triggered frontal polymerization propagating horizontally. Materials Letters, 176, 228-231.
stability of epoxy/graphene nanocomposite coating on stainless steel. Express Polymer Letters, 10(12),
1034-1046.
Asmussen, S. V., Arenas, G. F., & Vallo, C. I. (2015). Enhanced degree of polymerization of methacrylate and
epoxy resins by plasmonic heating of embedded silver nanoparticles. Progress in Organic Coatings,
88, 220-227.
Atif, M., Bongiovanni, R., & Yang, J. (2015). Cationically UV-Cured Epoxy Composites. Polymer Reviews, 55(1),
90-106.
Bartolo, P. J., & Gaspar, J. (2008). Metal filled resin for stereolithography metal part. Cirp Annals-Manufacturing
Technology, 57(1), 235-238.
Boro, U., & Karak, N. (2017). Tannic acid based hyperbranched epoxy/reduced graphene oxide nanocomposites
as surface coating materials. Progress in Organic Coatings, 104, 180-187.
Chang, J., Liang, G., Gu, A., Cai, S., & Yuan, L. (2012). The production of carbon nanotube/epoxy composites
with a very high dielectric constant and low dielectric loss by microwave curing. Carbon, 50(2), 689-698.
De, G., & Kundu, D. (2001). Silver-nanocluster-doped inorganic-organic hybrid coatings on polycarbonate
substrates. Journal of Non-Crystalline Solids, 288(1-3), 221-225.
Fahem, Z., & Bauhofer, W. (2012). Free radical fast photo-cured gate dielectric for top-gate polymer field effect
transistors. Organic Electronics, 13(8), 1382-1385.
G. Griffini, M. Invernizzi, M. Levi, G. Natale, G. Postiglione & S. Turri. (2016). 3D-printable CFR polymer
composites with dual-cure sequential IPNs. Polymer, 91, 174-179.
Gul, J. Z., Yang, B. S., Yang, Y. J., Chang, D. E., & Choi, K. H. (2016). In situ UV curable 3D printing of multi-
material tri-legged soft bot with spider mimicked multi-step forward dynamic gait. Smart Materials and
Structures, 25(11), 1-11.
Martin, C. A., Sandler, J. K. W., Shaffer, M. S. P., Schwarz, M. K., Bauhofer, W., Schulte, K., et al. (2004).
Formation of percolating networks in multi-wall carbon-nanotube–epoxy composites. Composites Science
and Technology, 64(15), 2309-2316.
Sangermano, M., Periolatto, M., Signore, V., & Spena, P. R. (2017). Improvement of the water-vapor barrier
properties of an UV-cured epoxy coating containing graphite oxide nanoplatelets. Progress in Organic
Coatings, 103, 152-155.
Sangermano, M., Roppolo, I., Camara, V. H. A., Dizman, C., Ates, S., Torun, L. (2011). Polysulfone/Metal
Nanocomposites by Simultaneous Photoinduced Crosslinking and Redox Reaction. Macromolecular
Materials and Engineering, 296(9), 820-825.
Sharif, M., Pourabbas, B., Sangermano, M., Moghadam, F. S., Mohammadi, M., Roppolo, I. (2017). The
effect of graphene oxide on UV curing kinetics and properties of SU8 nanocomposites. Polymer
International, 66(3), 405-417.
Zhou, J. P., Jia, S. J., Fu, W. L., Liu, Z. L., & Tan, Z. Y. (2016). Fast curing of thick components of epoxy via
modified UV-triggered frontal polymerization propagating horizontally. Materials Letters, 176, 228-231.
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2019-05-13
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บทความวิจัยจากการประชุมวิชาการวิศวกรรมเคมีและเคมีประยุกต์ระดับนานาชาติ ครั้งที่ 8 และแห่งประเทศไทย ครั้งที่ 28
