Determination of Solids Content of Charcoal-Impregnated Polyurethane Foams Using Density Measurements
Abstract
The Canadian Chemical Warfare (CW) Protective Suit is comprised of two layers, an outer, nylon/cotton, 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1983
- Accession Number
- ADA151385
Entities
People
- J. K. Dix
Organizations
- Defence Research and Development Canada