- Author
- McCord, M. G. | Birla, K. | Barker, R. L.
- Title
- Relationship Between Porosity and Barrier Effectiveness of Some Shell Fabrics Used in Protective Apparel.
- Coporate
- North Carolina State Univ., Raleigh Vijay Chemical Industries, Thane, India
- Report
- ASTM STP 1386,
- Book or Conf
- Performance of Protective Clothing: Issues and Priorities for the 21st Century. Proceedings. Seventh (7th) Volume. American Society for Testing and Materials (ASTM). ASTM STP 1386. June 28-30, 1999, ASTM, West Conshohocken, PA, Seattle, WA, Nelson, C. N.; Henry, N. W., Editors, 297-311 p., 2000
- Keywords
- protective clothing | protective equipment | fabrics | porosity | barriers | air permeability | textiles | thickness | fabric weight | penetration | moisture | equations
- Identifiers
- Personal Protective Equipment (PPE); chemical barrier; pore size; fabric structure; shell fabrics; chemical barrier materials; optical porosity data
- Abstract
- The porosity of twenty-two fabric samples was evaluated using image analysis. The relationship between the optical porosity and vapor penetration was investigated using a permeation test apparatus. A model was derived based on Whelan's equation for the resistance of fabric to diffusion of vapor, and the model was fit to the penetration data. The model fit the data fairly well, and may be used for some fabrics to predict the amount of vapor penetration under a null pressure gradient.