- Author
-
McCord, M. G.
|
Deaton, A. S.
|
Barker, R. L.
- Title
- Liquid Penetration Pressures for Fabrics Tested in Compression.
- Coporate
- North Carolina State Univ., Raleigh
- 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,
423-436 p.,
2000
- Keywords
-
protective clothing
|
protective equipment
|
fabrics
|
compressing
|
penetration
|
barriers
|
films
|
laminates
|
evaluation
|
test methods
|
ASTM F 1819
|
glycerine
|
blood
|
nonwoven fabrics
- Identifiers
- Personal Protective Equipment (PPE); barrier fabrics; microporous films; surgical gown; liquid penetration; mechanical test apparatus; breakthrough pressures for all materials and protocols; mechanical test data, visual detection and synthetic blood; hydrostatic test data, visual detection and synthetic blood; mechanical test data, viral assay; hydrostatic test data, viral assay; mechanical breakthrough pressures, visual and sensor detection; mechanical and hydrostatic breakthrough, visual detection
- Abstract
- A new mechanical test apparatus for the evaluation of liquid penetration of barrier fabrics has been developed. The apparatus is similar to that used for ASTM Standard Test Method for Resistance of Materials Used in Protective Clothing to Penetration by Synthetic Blood Using a Mechanical Pressure Technique (F 1819), with a few important differences. The test material is compressed between a pool of liquid and a solid surface. This apparatus is used without a sponge for retaining the challenge liquid. Additionally, any desired pressure profile may be programmed into a computer, and used for testing. Four materials were evaluated using this apparatus, and the results were compared to those obtained by hydrostatic testing using a modified ASTM Standard Test Method for Resistance of Materials Used in Protective Clothing to Penetration by Synthetic Blood (F 1670). Breakthrough pressures were higher for mechanical testing than for hydrostatic testing. Pressures obtained using an electronic sensor were not significantly different than those obtained using visual detection. Pressure ramp rates appear to have some effect on visually detected breakthrough pressures, but no significant effect on pressures obtained by viral assay.