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Service Life Prediction of Polymeric Coatings

Description

NIST is conducting basic and applied research to develop methods for predicting the performance and service life of polymeric building materials, such as protective coatings. Researchers at the Institute are investigating degradation mechanisms, improving characterization methods, and developing mathematical models of the degradation processes. Stochastic models, which are based in reliability theory and life-testing analysis, are included in the modeling efforts.

NIST SPHERE

NIST SPHERE (Simulated Photodegradation by High Energy Radiant Exposure) technology developed and patented by NIST researchers working on the Service Life Prediction of Polymer Coatings consortium.

To help in understanding the mechanisms of degradation and provide data for models, materials are characterized using many techniques to capture information regarding both chemical and physical degradation, including:

  • Fourier transform infrared spectroscopy (FTIR)
  • UV/Visible spectroscopy
  • Atomic Force Microscopy (AFM)
  • Nanoindentation
  • Laser Scanning Confocal Microscopy
  • Thermal analysis
  • Gloss measurements
NIST SPHERE: thermal image

Image of the NIST SPHERE taken with a thermal camera.

Researchers also are developing improved ways to characterize atmospheric environments to which these materials are exposed. Characterization of environmental parameters that cause degradation is needed to link material properties with service life. The NIST work provides a strong scientific and technical basis for standards used by industry. The research is coordinated with voluntary standards organizations and trade associations, industry, and other federal agencies.

* See the Press Release and Interview Video on the NIST SPHERE, November 2002 *
Selected Presentations from Organizational Meeting, Coatings Service Life Prediction Consortium, May 17-18

Overview - Jonathan Martin

Dispersion - Lipiin Sung

Optical Scattering - Lipiin Sung

Photoreactivity - Stephanie Watson

Nanomechanical Properties - Aaron Forster

Automated Analytical Lab - Eric Byrd

Informatics System - Joannie Chin

 

 

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Date created: 9/01/2000
Last updated: 7/12/2002