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Development of a Model to Predict Chemical Permeation of the U.S. Coast GuardChemical Response Suit

机译:开发一种预测美国海岸警卫队化学反应套件化学渗透的模型

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A predictive model was developed and computerized to enable Coast Guard fieldpersonnel to determine with 95% certainty whether totally encapsulated suits would be adequate barriers to untested chemicals. The model was based on permeation test results at 25 degrees centigrade of 163 chemicals against Challenge 5100 and 125 chemicals against Challenge 5200 fluoropolymer suit materials. Additional tests contained in the data base included tests at other temperatures and 36 mixtures. The model enables prediction as to whether permeation will be detected within three hours at 25 degrees centigrade, based on structure and size of the chemical of interest. Mixtures were found to exhibit no synergistic effects, i.e., each component behaves as it would alone (permeates or does not permeate). Compounds that tend to permeate have six carbons or less, carbon-carbon multiple bonds, halogen atoms, and are small non-polar organic compounds or small non-acidic, non-ionic inorganic compounds.

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