Keywords
Water polyurethane
Curing agent
Two-package
Double modification
Submitted : 2024-07-27
Accepted : 2024-08-11
Published : 2024-08-26
Abstract
By using HDI and TMP as the main raw materials, polyethylene glycol 400 (PEG400) is used as a nonionic hydrophilic modifier, and sodium hydroxyethyl sulfonate is used as an ionic hydrophilic modifier to synthesize adual hydrophilic modified polyurethane curing agent. Research revealed that introducing PEG400 for hydrophilic chainsegments and sodium hydroxyethyl sulfonate for hydrophilic ionic groups in the polyurethane curing agent componentleads to a uniform distribution of hydrophilic components, significantly enhancing compatibility with the aqueous polyolcomponent, and results in excellent film performance. The synthesis process and film were characterized using Fouriertransform infrared spectroscopy and high-resolution scanning electron microscopy in the study.
References
Melchiors M, Sonntag M, Kobusch C, et al., 2000, Recent Developments in Aqueous Two-Component Polyurethane (2K-PUR) Coatings. Progress in Organic Coatings, 40(1–4): 99–109. https://doi.org/10.1016/S0300-9440(00)00123-5
Li K, Shen Y, Fei G, et al., 2014, The Effect of PETA/PETTA Composite System on the Performance of UV Curable Waterborne Polyurethane Acrylate. Journal of Applied Polymer Science, 132(2): 41262. https://doi.org/10.1002/app.41262
Wu J, Yan H, Wang J, et al., 2013, Flame Retardant Polyurethane Elastomer Nanocomposite Applied to Coal Mines as Air-Leak Sealant. Journal of Applied Polymer Science, 129(6): 3390–3395. https://doi.org/10.1002/app.38946
Liao K-H, Park YT, Abdala A, et al., 2013, Aqueous Reduced Graphene/Thermoplastic Polyurethane Nanocomposites. Polymer, 54(17): 4555–4559. https://doi.org/10.1016/j.polymer.2013.06.032
Liu J, Liu H-F, Deng Li, et al., 2013, Improving Aging Resistance and Mechanical Properties of Waterborne Polyurethanes Modified by Lignin Amines. Journal of Applied Polymer Science, 130(3): 1736–1742. https://doi.org/10.1002/app.39267
Schwindt J, Reiff H, Kubitza W, 1995, Coating Compositions, A Process for Their Production and Their Use for Coating Water-Resistance Substrates. US5459197A, United States, viewed April,5nd,2023, https://patents.google.com/patent/US5459197A/en
Kim BK, Lee JC, 1996, Waterborne Polyurethanes and Their Properties. Journal of Polymer Science Part A: Polymer Chemistry, 34(6): 1095–1104. https://doi.org/10.1002/(SICI)10990518(19960430)34:6<1095::AIDPOLA19>3.0.CO;2-2
Noble K-L, 1997, Waterborne Polyurethanes. Progress in Organic Coatings, 32(1–4): 131–136. https://doi.org/10.1016/S0300-9440(97)00071-4
Mosbach J, Laas H-J, Jubitza W, 1992, Polyisocyanate Mixtures, Processes for Their Production and Their Use as Binders for Coating Compositions or as Reactants for Compounds Reactive to Isocyanate Groups or Carboxyl Groups. US5098983A, United States, viewed August,2nd,2023, https://patents.google.com/patent/US5098983A/en
Haberle K, 1996, Water-Emulsifiable Polyisocyanates. US5583176A, United States, viewed Jan,13nd,2023, https://patents.google.com/patent/US5583176A/en
Wang L, Lai XJ, Ma SY, 2013, Preparation of UV Curable Waterborne Polyurethane and its Application in Coatings. Advanced Materials Research, 821–822: 925–928. https://doi.org/10.4028/www.scientific.net/AMR.821-822.925