NIST logo

Publications Portal

You searched on: Author: tinh nguyen

Displaying records 71 to 80 of 118 records.
Resort by: Date / Title

71. Nanocharacterization of Surface and Interface of Different Epoxy Networks
Published: 1/1/2002
Authors: Xiaohong Gu, D T Raghavan, D L Ho, Li Piin Sung, Mark R VanLandingham, Tinh Nguyen
Abstract: The effect of network changes on the surface and interface properties of amine-cured epoxy has been investigated. Samples of different crosslinked epoxies are prepared by mixing stoichiometrically pure diglycidyl ether of bisphenol A (n=0.03) with di ...

72. Relating Laboratory and Outdoor Exposure of Coatings III. Effect of Relative Humidity on Moisture-Enhanced Photolysis of Acrylic-Melamine Coatings
Published: 1/1/2002
Authors: Tinh Nguyen, Jonathan W. Martin, E Byrd, E Embree
Abstract: The effects of relative humidity ranging from ~0% to 90 % on the moisture-enhanced photolysis (MEP) of a partially-methylated melamine acrylic polymer coating exposed to ultraviolet (UV) radiation at 50 oC have been investigated. The UV source was tw ...

73. Relating Laboratory and Outdoor Exposures of Acrylic Melamine Coatings: I. Cumulative Damage Model and Laboratory Exposure Apparatus
Published: 1/1/2002
Authors: Jonathan W. Martin, Tinh Nguyen, E Byrd, E Embree, B Dickens
Abstract: A cumulative damage model and a laboratory apparatus are described for linking field and laboratory photodegradation results and for predicting the service life of polymeric materials exposed in the laboratory and field. The apparatus was designed to ...

74. On the Use of the Atomic Force Microscope to Monitor Physical Degradation of Polymeric Coating Surfaces
Published: 12/1/2001
Authors: Mark R VanLandingham, Tinh Nguyen, Walter Eric Byrd, Jonathan W. Martin
Abstract: The atomic force microscope (AFM) was used to monitor changes in surface features of an acrylic melamine polymeric coating that was exposed to a variety of weathering conditions. A technique was developed such that, upon periodic removal from the we ...

75. Mode, Mechanism and Model for Hydrolysis of Acrylic-Melamine Coatings in the Absence of UV Light
Published: 11/1/2001
Authors: Tinh Nguyen, Jonathan W. Martin, S Saunders, E Byrd
Abstract: rylic-melamine coatings are used extensively for automobile topcoat/base coat systems. However, these materials undergo hydrolysis when they are exposed to water or humid environments. The mode and mechanism of degradation and a physics-based model ...

76. Physical Degradation Of Polymeric Coating Surfaces Using Atomic Force Microscopy
Published: 11/1/2001
Authors: Mark R VanLandingham, M Giraud, Tinh Nguyen, Walter Eric Byrd, Jonathan W. Martin
Abstract: Atomic force microscopy (AFM) and Fourier Transform Infrared (FTIR) spectroscopy were used to monitor physical and chemical changes, respectively, in acrylic melamine coatings caused by exposure to a 50 C, 70 % relative humidity environment with and ...

77. Characterization of Chemical Heterogeneity in Polymer Systems Using Hydrolysis and Tapping Mode Atomic Force Microscopy
Published: 7/1/2001
Authors: D Ragahavan, X. Gu, Tinh Nguyen, Mark R VanLandingham
Abstract: Characterization of polymer coatings microstructure is critical to the fundamental understanding of corrosion of coated metals. In this paper an approach for mapping chemical heterogeneity of a polymer system using chemical modification and tapping ...

78. Effects of Relative Humidity on Moisture-Enhanced Photolysis of Acrylic Melamine Coatings: A Quantitative Study
Published: 4/1/2001
Authors: Tinh Nguyen, Jonathan W. Martin, E Byrd, N Embree
Abstract: The effects of relative humidity ranging from [approximately equal to] 0 % to 90 % on the moisture-enhanced photolysis (MEP) of a partially-methylated melamine acrylic polymer coating exposed to the ultraviolet (UV)/50 degrees C condition have been i ...

79. Effects of Water, Salt Solution and Simulated Concrete Pore Solution on the Properties of Composite Matrix Resins Used in Civil Engineering Applications
Published: 4/1/2001
Authors: Joannie W Chin, K Aouadi, M R. Haight, W Hughes, Tinh Nguyen
Abstract: One of the obstacles hindering the acceptance of polymer composites in civil engineering applications is the susceptibility of the polymeric matrix to degradation that is initiated by moisture, temperature, and corrosive chemical environments. The o ...

80. Nanomechanical Measurements of Polymeric Systems
Published: 3/13/2001
Authors: Mark R VanLandingham, Christopher C White, Xiaohong Gu, Tinh Nguyen
Abstract: Durability, in terms of service life, is often related to the failure due to service conditions of an unacceptable percentage of a product population. In many cases, this percentage is much less than 1 %, and thus the factors affecting early times-t ...

Search NIST-wide:

(Search abstract and keywords)

Last Name:
First Name:

Special Publications:

Looking for a NIST Special Publication (NIST SP Series)? Place the series number and dash in the report number field (Example: 800-) and begin your search.

  • SP 250-XX: Calibration Services
  • SP 260-XX: Standard Reference Materials
  • SP 300-XX: Precision Measurement and Calibration
  • SP 400-XX: Semiconductor Measurement Technology
  • SP 480-XX: Law Enforcement Technology
  • SP 500-XX: Computer Systems Technology
  • SP 700-XX: Industrial Measurement Series
  • SP 800-XX: Computer Security Series
  • SP 823-XX: Integrated Services Digital Network Series