Get This Paper

Desmocomp® – Raw Materials for Pultruded Composites with Excellent Chemical and Weathering Resistance


Title: Desmocomp® – Raw Materials for Pultruded Composites with Excellent Chemical and Weathering Resistance

Authors: Liang Chen, James Thompson-Colón, Alan Bushmire, Nathan Chaffin, Dan Williams, Richard Meisenheimer, and Stamo Mentizi

DOI: 10.33599/nasampe/s.19.1517

Abstract: The use of fiber reinforced plastic (FRP) materials, made of a polymer matrix and reinforcing fibers, has been growing in the aerospace, automotive, and construction industries, where light weight, excellent mechanical properties, and corrosion resistance are desired. In most of these applications, a thermosetting polymer like unsaturated polyester, epoxy, or polyurethane is preferred. Although FRP materials deliver highly differentiated performance, they struggle to achieve long term Ultraviolet (UV) and weathering resistance. They all contain aromatic monomer units that absorb UV light, causing degradation of the polymer matrix. End markets continue to clamor the composite industry for better FRP solutions for outdoor applications. Herein we present a new thermoset technology, Desmocomp®, based on aliphatic polyisocyanates, which are unaffected by UV radiation and have excellent weathering resistance. These novel composites are particularly suitable for outdoor applications. This technology has proven to have low inherent flammability and high chemical resistance. Additionally, it is easy to process the liquid resin in fabricating composite materials. The liquid resin has long pot life at room temperature and shows rapid curing at elevated temperatures. Therefore, this technology is readily applicable to established composite manufacturing processes such as pultrusion.

References: 1. W. Hinz, B. Kilian “New markets for PU pultrusion.” FAPU European Polyurethane Journal 2017, 32–35. 2. S. J. Harasin, J. E. Hayes, D. Sounik “Polyurethane pultrusion formulations for the production of articles with improved coating adhesion and articles produced therefrom.” US10005877B2. 3. A. Magnotta, S. J. Harasin “Water-clear aliphatic polyurethane pultrusion formulations and processes.” EP2777915B1. 4. D. Achten “New isocyanate based thermoset composite matrix materials with extreme UV, chemical and weathering resistance.” Thermosetting Resins from Basics to Applications International Conference, Berlin, Germany, 2018. 5. P. Heinz, B. Kilian, R. Meisenheimer, S. Mentizi “Performance leap in pultrusion with polyurethane.” PU Magazine, 2018, Vol 15, No 5, 476–479. 6. M. Connolly, J. King, T. Shidaker, A. Duncan “Processing and characterization of pultruded polyurethane composites.” 2006. 7. M. Heinrick, B. Crawford, A. S. Milani “Degradation of fibreglass composites under natural weathering conditions.” MOJ Poly Sci. 2017, 1, 18–24. DOI: 10.15406/mojps.2017.01.00004. 8. M. R. Legault “Pultruded windows: rising high?” Composites World News, 2012.

Conference: SAMPE 2019 - Charlotte, NC

Publication Date: 2019/05/20

SKU: TP19--1517

Pages: 10

Price: FREE

Get This Paper