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Author: joannie chin

Displaying records 21 to 30 of 58 records.
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21. Studying Long-term Performance of a Nano-ZnO filled Waterborne Polyurethane Coating using Spectroscopies and Microscopies
Published: 9/9/2009
Authors: Xiaohong X. Gu, Dongmei Zhe, Stephanie S Watson, Guodong Chen, Minhua Zhao, Paul E Stutzman, Deborah L Stanley, Tinh T. Nguyen, Joannie W Chin, Jonathan W. Martin
Abstract: Although inorganic UV absorbers such as zinc oxide (ZnO) and cerium oxide (CeO2) exhibit numerous advantages compared to organic UV absorbers, the mechanisms of how these nanoparticles affect the long-term performance of polymeric coatings are less t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903215

22. Degradation and Nanofiller Release of Polymer Nanocomposites Exposed to UV
Published: 7/15/2009
Authors: Tinh T. Nguyen, Bastien T. Pellegrin, Alexander J. Shapiro, Xiaohong X. Gu, Joannie W Chin
Abstract: Nanofillers are increasingly used to enhance multifunctional properties of polymers. However, recent research suggests that nanomaterials may have a negative impact on the environmental health and safety. Since polymers are susceptible to photodegrad ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902990

23. Long-Term Performance of Nano-Filled Polymeric Materials: Effect of ZnO Nanoparticles on Photodegradation of a Waterborne Polyurethane Coating
Published: 7/8/2009
Authors: Xiaohong X. Gu, Dongmei Zhe, Minhua Zhao, Guodong Chen, Nhieu Ly, Paul E Stutzman, Li Piin Sung, Tinh T. Nguyen, Joannie W Chin
Abstract: Polymers are widely used as exterior coatings in buildings, bridges, aircrafts and automobiles for both protection and aesthetic purposes. However, the service life of the applied coatings is limited due to the photodegradation of polymers induced by ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902293

24. Characterization of Ambient Temperature Cure Epoxies Used in Adhesive Anchor Applications
Published: 5/20/2009
Authors: Joannie W Chin, Aaron M Forster, Cyril Clerici, Donald Lee Hunston
Abstract: Thermo-viscoelastic properties and creep response of two commercial, ambient temperature cure epoxy structural adhesives were analyzed and compared. The adhesives were formulated by the same manufacturer and appeared to have the same base chemistry; ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901504

25. Network Aggregation of CNTs at the Surface of Epoxy/MWCNT Composite Exposed to UV Radiation
Published: 3/18/2009
Authors: Tinh T. Nguyen, Bastien T. Pellegrin, Alexander J. Shapiro, Xiaohong X. Gu, Joannie W Chin
Abstract: Carbon nanotubes (CNTs) are increasingly incorporated in polymers to enhance their mechanical and electrical properties. However, organic polymers are prone to degrade when exposed to UV radiation. Therefore, CNTs in a polymer nanocomposite could ev ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902039

26. Effect of Artificial Perspiration and Cleaning Chemicals on Mechanical and Chemical Properties of Ballistic Fibers
Published: 1/1/2009
Authors: Joannie W Chin, Sylvain H. Petit, Amanda Lattam Forster, Michael A Riley, Kirk D Rice
Abstract: During routine field use of soft body armor, the ballistic panels often become saturated with perspiration. This condition motivates the user to clean and/or deodorize the armor, and anecdotal evidence is given for various methods used to accomplish ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861547

27. NCO-Functionalized Nanoclays for Polyurethane Composite Coatings
Published: 10/1/2008
Authors: Bastien T. Pellegrin, Xiaohong X. Gu, Joannie W Chin, Tinh T. Nguyen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861639

28. Thermo-viscoelastic Analysis and Creep Testing of Ambient Cure Epoxy Adhesives Used in Construction Applications
Published: 7/30/2008
Authors: Joannie W Chin, Donald Lee Hunston, Aaron M Forster, Justin M Ocel, Jean Michel Hartmann, Paul Fuchs
Abstract: Epoxies are increasingly used in construction for structural applications and properties such as creep are very important. For this reason, the thermo-viscoelastic properties and creep response of two commercial, ambient cure structural epoxy adhesi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861549

29. Effect of Artificial Perspiration and Cleaning Chemicals on the Mechanical and Chemical Properties of Ballistic Fibers
Series: NIST Interagency/Internal Report (NISTIR)
Published: 6/1/2008
Authors: Joannie W Chin, Sylvain H. Petit, Amanda Lattam Forster, Kirk D Rice, Michael A Riley
Abstract: During routine field use of soft body armor, the ballistic panels often become saturated with perspiration.  This unsavory condition motivates the user to clean and/or deodorize the armor, and anecdotal evidence is given for various methods used to a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861497

30. Role of Interfacial Water in the Adhesion Loss of Polymer/Substrate Systems and Composites
Published: 6/21/2007
Authors: Tinh T. Nguyen, Joannie W Chin, E Byrd, David Alshed, Cyril Clerici, Jonathan W. Martin
Abstract: Water at the polymer/substrate interface in coatings, adhesives, and fiber-reinforced polymer composites is often the main cause of adhesion loss in these systems. Using experimental data measured in this study, we critically assess the role of inter ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860664



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