Accession Number:

ADA151385

Title:

Determination of Solids Content of Charcoal-Impregnated Polyurethane Foams Using Density Measurements

Descriptive Note:

Technical note

Corporate Author:

DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s):

• Dix, J. K.

Report Date:

1983-09-01

Pagination or Media Count:

21.0

Abstract:

The Canadian Chemical Warfare CW Protective Suit is comprised of two layers, an outer, nyloncotton, repellent layer and an inner layer of polyurethane foam laminated to a nylon-tricot backing impregnated with charcoal. In addition to charcoal, the impregnating bath is likely to contain a latex binder, suspending agents, flame retardants, etc. A test method to determine the actual charcoal content has been developed. A method to measure the density of charcoal-impregnated polyurethane foam which gives results with standard deviations of less than 0.7 has been developed. Curves relating density of impregnated foam to weight fraction of solids in the foam are presented. These curves allow the determination of the solids content of a foam sample by measuring its density, provided the density of the unimpregnated foam is known. If the composition of the impregnite is known, a more accurate estimation of the weight fraction of solids is possible and the charcoal content may also be determined.

Descriptors:

• *POLYURETHANE RESINS
• *FOAM
• *CHARCOAL
• DENSITY
• MEASUREMENT
• LAYERS
• CANADA
• TEST METHODS
• SOLIDS
• INTERNAL
• CHEMICAL WARFARE
• PROTECTIVE CLOTHING
• BATHS
• IMPREGNATION

Subject Categories:

• Plastics
• Chemical, Biological and Radiological Warfare

Distribution Statement:

APPROVED FOR PUBLIC RELEASE