Browse > Article
http://dx.doi.org/10.12925/jkocs.2021.38.2.476

Syntheses of 70% Solids Acrylic Resin and Comparative Study in Physical Properties as Acrylic Urethane Resin Coatings  

Kim, Seong-Kil (Korea Industrial Technology Networking Cooperative)
Park, Hyong-Jin (R&D Center, Kun Yong Co. Ltd.)
Publication Information
Journal of the Korean Applied Science and Technology / v.38, no.2, 2021 , pp. 476-487 More about this Journal
Abstract
To prepare acrylic resin coatings containing 70% of solids, we used n-butyl methacrylate(BMA), methyl methacrylate(MMA), 2-hydroxyethyl methacrylate(2-HEMA), and acetoacetoxyethyl acrylate(AAEA), caprolactone acrylate(CLA) as raw materials, the glass transition temperature(Tg) of acrylic copolymer was adjusted around 50 ℃. The viscosity and molecular weight of the acrylic resins was increased with increasing OH values. Di-tert-amyl peroxide was found to be the suitable initiator to get high-solids acrylic resins. The optimum reaction conditions found in the study are 5 wt% of initiator, 4 wt% of chain transfer agent, 4 hrs of dropping time, and 140 ℃ of reaction temperature. The structure of the synthesized resins were characterized by FT-IR and 1H-NMR spectroscopy. Number average molecular weight of 1900~2600 and molecular wight distribution of 1.4~2.1 were obtained. Crosslinked acrylic urethane clear coatings were obtained by curing reaction between the synthesized acrylic resins and hexamethylene diisocyanate trimer(Desmodur N-3300), the equivalent ratio of NCO/OH was 1.2/1.0. The physical properties from the following studies were carried out: viscosity(Zahn cup #2), adhesion, drying time, pot-life, pensil hardness, and 60° specular gloss. Various properties of the acrylic urethane clear coatings were also evaluated on the coating specimens. Adhesion property to a substrate, drying time, pot-life, pencil hardness, and 60° specular gloss of prepared paint showed quite good properties. Futhermore, prepared paint containing 10% of CLA showed quite good properties for adhesion, low viscosity and high hardness.
Keywords
acetoacetyl group; caprolactone group; high solids; acrylic resin; acrylic urethane coatings;
Citations & Related Records
연도 인용수 순위
  • Reference
1 T. McAfee, N. Leonardi, R. Montgomery, J. Siqueira, T. Zekoski, M. F. Drenski, W. F. Reed, "Automatic Control of Polymer Molecular Weight during Synthesis", Macromolecules, Vol.49, No.19 pp. 7170-7183, (2016).   DOI
2 G. M. Tow, E. J. Maginn, "Fully Atomistic Molecular Dynamics Simulations of Hydroxyl-Terminated Polybutadiene with Insights into Hydroxyl Aggregation", Macromolecules, Vol.53, No.7 pp. 2594-2605, (2020).   DOI
3 Y. Zhang, L. Yuan, F. Chen, A. J. Gu, G. Z. Liang, "Cure kinetics of cyanate ester resin using microencapsulated dibutyltin dilaurate as catalyst", Polymer Bulletin, Vol.74, No.4 pp. 1011-1030, (2017).   DOI
4 H. S. Park, D. J. Chung, H. S. Hahm, S. K. Kim, W. B. Im, S. J. Kim, "Preparation and physical properties of weather resistant silicone/acrylic resin coatings", Journal of Chemical Engineering of Japan, Vol.37, No.2 pp. 158-165, (2004).   DOI
5 Y. M. Boiko, "Statistical adhesion strength of an amorphous polymer-its miscible blend interface self-healed at a temperature below the bulk glass transition temperature", Journal of Adhesion, Vol.96, No.8 pp. 760-775, (2020).   DOI
6 J. P. Xu, S. Xue, J. L. Zhang, Y. Han, S. Q. Xia, "Molecular Design of the Amphiphilic Polymer as a Viscosity Reducer for Heavy Crude Oil: From Mesoscopic to Atomic Scale", Energy & Fuels, Vol.35, No.2 pp. 1152-1164, (2021).   DOI
7 A. A. Berlin, N. G. Matveyeva, "The progress in the chemistry of polyreactive oligomers and some trends of its development. I. Synthesis and physicochemical properties", Journal of Polymer Science, Vol.12, pp. 1-64, (1977).
8 C. D. Diakoumakos, I. Raptis, A. Tserepi, P. Argitis, "Free-radical synthesis of narrow polydispersed 2-hydroxyethyl methacrylate-based tetrapolymers for dilute aqueous base developable negative photoresists", Polymer, Vol.43, No.4 pp. 1103-1113, (2002).   DOI
9 L. J. Bellamy, The Infra-red Spectra of Complex Molecules, 4th ed., John Wiley & Sons, Inc., New York, (1966).
10 C. J. Pouchert, J. Behnke, The Aldrich Library of 13C and 1H FT NMR Spectra, Vol.1, Aldrich Chemical Co. Inc., Milwaukee, (1993).
11 L. Cai, S. F. Wang, "Poly(epsilon-caprolactone) acrylates synthesized using a facile method for fabricating networks to achieve controllable physicochemical properties and tunable cell responses", Polymer, Vol.51, No.1 pp. 164-177, (2010).   DOI
12 A. Paknejad, R. Mohammadkhani, H. Zarei, "Experimental High-Temperature, High-Pressure Density Measurement and Perturbed-Chain Statistical Associating Fluid Theory Modeling of Dimethyl Sulfoxide, Isoamyl Acetate, and Benzyl Alcohol", Journal of Chemical and Engineering Data, Vol.64, No.12 pp. 5174-5184, (2019).   DOI
13 Y. H. Fu, C. Perales, T. Eliason, D. E. Bergbreiter, "110th Anniversary: Reversible Solubilization of Polar Polymers and Polymeric Catalysts in Nonpolar Solvents", Industrial & Engineering Chemistry Research, Vol.58, No.31 pp. 14579-14587, (2019).   DOI
14 J. L. Mann, A. K. Grosskopf, A. A. A. Smith, E. A. Appel, "Highly Branched Polydimethylacrylamide Copolymers as Functional Biomaterials", Biomacromolecules, Vol.22, No.1 pp. 86-93, (2021).   DOI
15 R. Gonzalez-Blanco, M. F. Cunningham, E. Saldivar-Guerra, "High Solids TEMPO-Mediated Radical Semibatch Emulsion Polymerization of Styrene", Journal of Polymer Science Part A: Polymer Chemistry, Vol.54, No.1 pp. 49-62, (2016).
16 A. Rolewicz-Kalinska, K. Lelicinska-Serafin, P. Manczarski, "Volatile organic compounds, ammonia and hydrogen sulphide removal using a two-stage membrane biofiltration process", Chemical Engineering Research & Design, Vol.165, pp. 69-80, (2021).   DOI
17 F. Gasc, S. Clerc, E. Gayon, J. M. Campagne, P. Lacroix-Desmazes, "Supercritical CO2-mediated design of Pd supported catalysts using an amphiphilic functional copolymer", Journal of Supercritical Fluids, Vol.105, pp. 136-145, (2015).   DOI
18 L. F. Gao, J. Oh, Y. F. Tu, T. Chang, C. Y. Li, "Glass transition temperature of cyclic polystyrene and the linear counterpart contamination effect", Polymer, Vol.170, pp. 198-203, (2019).   DOI
19 J. W. Kim, D. C. Lee, J. S. Choi, "Synthesis of Eco-Friendly High Solid Acrylic Resins and Curing Properties of Acrylic Urethane Resin Coatings", Korean Chemical Engineering Research, Vol.55, No.5 pp. 586-592, (2017).   DOI
20 A. Romo-Uribe, "Viscoelastic Behavior of Unentangled POSS-Styrene Nanocomposites and the Modification of Macromolecular Dynamics", Macromolecules, Vol.50, No.18 pp. 7177-7189, (2017).   DOI