Protective clothing materials

Permeation is the process by which a hazardous chemical moves through a protective clothing materials on a molecular level. No pinholes or other flaws are involved in dlowing the chemical to reach the other side of the materld. The process consists of ... 

Protective clothing includes overalls, bibs, duffle coats, aprons, complete one-piece suits with hoods, spats, armlets etc. It is chosen for protection against mechanical hazards, abrasion, extremes of temperature etc. as well as chemicals. The nature of the hazard and user comfort dictate the choice. The properties of a range of protective clothing materials are listed in Table 11.22. 

Pal T, Griffin GD, Miller GH, et al. 1993. Permeation measurements of chemical agent simulants through protective clothing materials. Journal of Hazardous Materials 33(1) 123-141. 

Vo-Dinh T, Pal, T. 1992. Development of a fluorescence quenching technique to detect permeation of chemical agent simulants through protective clothing materials. Appl Spectrosc 46(4) 677-681. 

Breakthrough Time The elapsed time between initial contact of a hazardous chemical with the outside surface of a protective clothing material and the time at which the chemical can be detected at the inside surface of the material. 

Chemical Protective Clothing Material Any material or combination of materials used in an item of clothing for the purpose of isolating parts of the wearer s body from contact with a hazardous material. 

Chemical Protective Suit A single or multi-piece garment constructed of chemical protective clothing materials designed and configured to protect the wearer s torso, head, arms, legs, hands, and feet. 

ASTM (2003). F-739-85 Standard Test Method for Resistance of Protective Clothing Materials to Permeation by Liquids or Gases, in Annual Book of ASTM Standards, Vol. 11.03, American Society for Testing and Materials, West Conshohoken, PA, USA (website http //www.astm.org). 

Hansen, C.M., Billing, C.B., Jr., and Bentz, A.P., Selection and nse of molecular parameters to predict permeation through fluoropolymer-based protective clothing materials, in The Performance of Protective Clothing, Vol. 4, ASTM STP 1133, J.P. McBriarty and N.W. Henry, Eds., American Society for Testing and Materials, Philadelphia, 1992, 894—907. 

Permeation of Multifunctional Acrylates through Three Protective Clothing Materials... 

American Society for Testing and Materials, ASTM F1001, Guide for Selecting Chemicals to Evaluate Protective Clothing Materials, 1989. 

F739-99a Resistance of Protective Clothing Materials to Permeation by Liquids or Gases under Conditions of Continuous... 

F 1407-99a Resistance of Chemical Protective Clothing Materials to Liquid Permeation - Permeation Cup Method... 

ISO 6529 2001 Protective clothing - Protection Against Chemicals - Determination of Resistance of Protective Clothing Materials... 

Vahdat N. 1987. Permeation of protective clothing materials by methylene chloride and perchloroelhylene. Am Ind Hyg Assoc J 48 646-651. 

Our assessment also indicates that, to date, total elimination of exposure can not be accoitplished by the wearing of protective equipment (15, 16, 17). If the Agency is to satisfactorily develop performance standards on protective clothing materials, extensive research is needed in several areas ... 

Daugherty ML, Watson AP, Vo-Dinh T. 1992. Currently available permeability and breakthrough data characterizing chemical warfare agents and their simulants in civilian protective clothing materials. Journal of Hazardous Materials 3 0 243 -267. 

ASTM FXXXX (draft) Standard Test Method for the Resistance of Protective Clothing Materials to Biological Fluids conducted at 1 psi (based on ASTM F 903) The fabric is subjected to a liquid at 0 psi for 5 min, at 1 psi of pressure for 1 min, and at 0 psi for 54 min. Time of penetration is recorded. 

Haase has extensively reviewed the topic of fire resistant clothing standards and regulations, and Shaw also discussed the use of standards in the selection of protective clothing materials. Horrocks lists many standard test methods for flame resistant textile applications. 

Shaw A. Steps in the selection of protective clothing materials. In Scott RA, editor. Textiles for protection. Cambridge Woodhead Publishing 2005. p. 90-116. 

In addition to the properties of protective clothing materials, the toxicity of the penetrant should be considered. For less toxic solvents, materials with a permeation index... 

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